Dan

about your CL, but were afraid to ask . . .

INTRODUCTION

The all-new CL coupe is the newest addition to the Acura line that
reinforces the brand's commitment to performance engineered
vehicles. Re-designed and re-engineered from the ground up, the new
CL delivers higher levels of performance, technological innovations,
engineering achievements, passenger safety and overall style.

The all-new CL is larger and more powerful than the first generation
CL coupe introduced in 1996. This move upmarket allows the new
Acura CL to aggressively compete with Europe's finest performance
coupes, including the BMW 328Ci, Volvo C70 and Mercedes-Benz
CLK320.

The new CL has been designed to evoke the beautiful lines of classic
European Gran Turismo coupes of the automotive past. Styling cues
from Acura's own lineage are also evident in the CL, specifically the
original Legend Coupe. Though the styling was inspired by the past,
the technology is all 21st Century based, encompassing efficient and
powerful engines, revolutionary safety features, and high tech
computer controlled vehicle management systems.

The new CL coupe is offered exclusively with V-6 power and is
available in two distinct models, the 3.2CL and the 3.2CL Type S. In
the spirit of the Acura NSX supercar, the Type S was designed for
high performance driving with class leading technology and power.
Producing 260 hp through an ingenious, dual-stage air induction
system, the Type S is the most powerful six-cylinder coupe in its
class. The 3.2CL is powered by a 225 hp version of the Acura
3.2-liter V6 engine.

Overall size has increased inside and out, with 90.0 cu ft of interior
volume, a 5.3 cu ft increase from the last generation CL. Overall
length and width have increased to 192.0 in. and 70.6 in. respectively.

Technologically, the CL incorporates the latest in safety features,
including a standard Vehicle Stability Assist (VSA) system (on Type
S only) along with dual-stage front passenger airbags, advanced side
airbags with front passenger height and position sensors and standard
antilock brakes and Traction Control System. The CL also offers the
optional Acura Navigation System, which provides satellite-linked
nationwide coverage through a DVD (Digital Versatile Disc)
on-board database.

All these engineering and technical elements combine to form the most
comprehensively equipped coupe in its class: The new CL, from
Acura.



CONCEPTS AND GOALS

The 2001 model year CL is designed to provide:

An exhilarating, high-performance driving experience
Class-leading engine power and torque with outstanding
refinement
Superb handling with solid road feel and cornering abilities
An elegant Gran Turismo coupe design
A spacious and sophisticated interior design with ample room
for 4 adults
A driver-oriented ergonomic cockpit crafted with fine materials
and an impeccable level of fit and finish
A thorough approach to safety engineering that combines
accident-avoidance technologies with advanced impact-energy
management engineering and class leading Supplemental
Restraint Systems (SRS)
The most comprehensive list of standard equipment in its class


HIGH PERFORMANCE POWERTRAIN

Driving the all-new CL are two variations of Acura’s 3.2-liter
24-valve VTEC V-6 engine. The 3.2CL’s powerplant creates 225
hp, a 12.5-percent increase from the previous generation 3.0CL
coupe (200 hp). The high performance 3.2CL Type S produces
30-percent more horsepower than the previous 3.0CL with a class
leading 260 hp. This is achieved through an all-new, dual-stage air
induction system as well as numerous other performance
enhancements, resulting in increased power and torque without
increased engine displacement.

Both versions of the V6 engine transfer their power through an
electronically controlled 5-speed automatic transmission with the
Acura Sequential SportShift system. This sophisticated transmission,
similar to the one first introduced in the Acura NSX supercar,
provides smooth shifting and a refined driving experience with
uncompromised driver control.

High performance does not necessarily mean high levels of vehicle
emissions, as both the 3.2CL and Type S models meet tough LEV
(Low Emission Vehicle) standards while California models (3.2CL
only) meet ULEV (Ultra Low Emission Vehicle) standards.



GLOBAL MID-SIZE PLATFORM

The CL’s unit-body is based on the Global Mid-Size Platform that
positions the front drive powertrain in a transverse orientation,
allowing for a greater amount of usable interior volume and better
weight distribution. A version of this proven platform design in the
3.2TL performance sedan has already received accolades from the
automotive press and consumers alike for its solid construction and
quality engineering. The new CL grows in overall size and is now two
inches longer and half an inch wider. Significant chassis advances have
been made in the areas of torsional and bending rigidity. To reduce
Noise, Vibration and Harshness (NVH), the front and rear
suspensions are carried on isolating subframes, resulting in low interior
noise levels. Computer designed reinforcements to the CL’s overall
structure result in improved crash-worthiness and enhanced
protection of the passenger compartment. The CL’s fully independent
double-wishbone suspension fitted with large wheels and tires result in
stable and predictable handling.



ELEGANT GRAN TURISMO COUPE EXTERIOR DESIGN

The long front hood and short rear deck of the new CL have been
sculpted in the tradition of great European designs of the 50’s and
60’s. Designers also called upon Acura’s own lineage of past designs;
most notably, the exotic NSX supercar and the original first
generation Legend Coupe.



STYLISH AND ERGONOMIC INTERIOR DESIGN

To complement the outstanding performance capabilities of the CL’s
powertrains, a serious driver’s environment was incorporated into the
overall interior concept. All the instruments, comfort and convenience
switches, along with steering and shifter controls are banked towards
the driver. This layout envelops the driver and allows for complete
concentration on the road ahead with minimal distractions.

In addition to the driver, all three passengers enjoy individual bucket
seating comfort with fine-crafted leather surfaces. Though a coupe
traditionally limits rear passenger seating space, the CL has been
designed to accommodate rear passengers in comfort. Leather inserts
on the doors blend elegantly with wood-grained trim accents to
provide a luxurious environment while a generous greenhouse allows
for superb visibility.


POWERTRAIN Back to Top


OVERVIEW

The new CL is available with two V-6 powerplants. The 3.2CL
receives a powerful, 225-hp VTEC V-6 engine, similar to the CL’s
sibling, the 3.2TL performance luxury sedan. The all-aluminum block
with Acura’s renowned VTEC system improves horsepower output
by 12.5-percent when compared to the previous 3.0CL coupe.

The high performance Type S model raises the 3.2CL’s engine output
to even higher levels. Several enhancements to the 3.2CL’s VTEC
V-6 engine, including a high flow capacity dual-stage induction system
and free-flowing exhaust, help the Type S develop a maximum 260
horsepower and 232 lb-ft of torque.

In addition, the patented Acura VTEC technology, first utilized in the
NSX supercar, provides both the 3.2CL and Type S models with an
incredibly flat torque curve, boosting power and responsiveness at all
engine speeds.

Both CL powerplants transfer their power through the new 5-speed
automatic transmission with a Formula 1 race car-inspired Sequential
SportShift system. As in the Acura NSX, the SportShift allows the
driver to select the forward gears just like a manual transmission while
enjoying the convenience of a full-fledged automatic transmission.

Performance is not achieved at the expense of Acura’s commitment
to the environment, as both the 3.2CL and Type S meet tough Low
Emission Vehicle (LEV) and Ultra Low Emission Vehicle (ULEV)
(for 3.2CL California models only) emission standards.

Powertrain Overview

Engine

Type S with 260 horsepower at 6100 rpm – the most power in
its class
Type S with 232 lb ft of torque between 3500 – 5500 rpm
Type S engine with high volume, dual-stage induction system
Type S with high-flow exhaust system with tuned sports
exhaust note
3.2CL with 225 horsepower at 5600 rpm

Variable Valve Timing and Lift Electronic Control (VTEC)
Computer controlled Programmed Fuel Injection (PGM-FI)
Direct Ignition System
100,000-mile tune-up intervals

5-Speed Automatic Transmission

Quick-response 5-speed Sequential SportShift allows
semi-manual operation
Torque converter lockup area increased to improve
performance and fuel efficiency

5-speed design helps improve acceleration and fuel economy
Direct-control automatic transmission is managed by the
Powertrain Control Module (PCM) for smoother shifting
Grade Logic Control to ease shifting when driving through hills

Emissions/Fuel Economy

EPA fuel economy of 19/29 mpg (city/hwy)
All CL coupes meet LEV standards; 3.2CL California models
meet ULEV standards
Electronically controlled Exhaust Gas Recirculation (EGR)

Noise Vibration and Harshness (NVH)

Smooth firing 60-degree V-angle
Full-floating piston pins eliminate piston slap during warm-up
Elimination of separate camshaft holders allows for a more
compact, rigid cylinder head
Lightweight pistons and connecting rods
Three hydraulic engine mounts
Transmission gear noise reduction through tighter
gear-teeth-mesh contact ratio
High rigidity cylinder block (ribbed) on Type S



ENGINE ARCHITECTURE

An advanced 3.2-liter, 24-valve, all-aluminum, 60-degree V-6 engine
powers both the 3.2CL and the Type S. Remarkably compact and
lightweight, the CL power plant and transmission incorporate a wide
variety of advanced technologies, including the VTEC system, high
flow air filter and throttle body along with a unique, dual-stage
induction system exclusively on the Type S. Similar to the powertrain
in the 3.2TL performance luxury sedan, the CL’s performance
capabilities have vastly improved from the previous generation 2.3CL
and 3.0CL coupes.



ENGINE BLOCK

Die-cast and heat-treated, the compact aluminum block is extremely
rigid, with a high natural frequency and minimal resonant vibration.
The V-6’s iron cylinder liners have their bore pitch set at a close
98-mm spacing to reduce overall engine size. The free-revving CL
engine is oversquare with a bore of 89 mm and a stroke of 86 mm to
give the engine a total displacement of 3210 cc. The CL employs an
engine cylinder bank V-angle of 60-degrees with improvements in
engine smoothness and reduction in overall bulk and weight. The
block has an unusually short deck height, resulting in an overall
reduction in the height and width of the assembled engine. The Type S
engine also incorporates separate, spin-cast cylinder liners that are
cast into the engine block during the initial manufacturing stage. These
spin-cast liners are lighter than traditional engine block cylinder liners
and provide added heat rejection to avoid engine knocking.
Additionally, by reducing the number of machined surfaces, spin-cast
cylinder liners ease the manufacturing process.



CRANKSHAFT/CONNECTING RODS/PISTONS

A rigid, forged crankshaft and narrow 19 mm connecting rods reduce
overall engine length and width. The rods in the V-6 do not employ
the conventional nut-and-bolt type fasteners, but instead utilize lighter
bolts (without nuts) called plastic-region fasteners. This allows a
downsizing of the rod bolts while maintaining the proper clamping
force and strength margins.

The V-6 incorporates compact pistons made from lightweight, cast
aluminum alloy. The unique dome shaped design produces maximum
volumetric efficiency in the combustion chamber with a 9.8:1
compression ratio in the 3.2CL. The Type S achieves a 10.5:1 ratio
through an increased dome shape on the piston allowing for a more
condensed combustion volume in the chamber. The pistons utilize a
3-ring design with the Type S engine incorporating a unique angled
top ring for an improved seal within the cylinder to accommodate the
higher combustion pressure.



CYLINDER HEAD

The 3.2-liter V-6 pressure-cast aluminum alloy cylinder heads reflect
Acura’s latest thinking in engine design. Utilizing 4 valves per cylinder
and a compact combustion chamber with a generous squish area, the
cylinder head is a key component for the high output CL engines. The
Type S also features special, race designed intake valves to further
improve fuel flow into the combustion chamber. The single camshaft in
each cylinder head is installed from the timing-belt end of the engine,
eliminating the need for bolt-on caps – a savings of weight and
complexity. Driven by the crankshaft via a glass-fiber reinforced
toothed belt, the cams actuate the valves via friction reducing roller
followers.



VARIABLE VALVE TIMING AND LIFT ELECTRONIC
CONTROL (VTEC)



The Variable Valve Timing and Lift Electronic Control (VTEC) valve
train is a major contributing factor to the CL’s remarkable
combination of high power delivery and fuel economy. With the lift
and opening duration of the larger intake valves altered automatically
based on engine rpm, the engine develops strong low-speed torque
without sacrificing high rpm power.

The VTEC-equipped engine delivers a substantial amount of
horsepower, coupled with greatly increased torque at low-to-mid
speed range. At low rpm, the intake valves follow low-lift,
short-duration cam lobes with timing that optimizes cylinder filling.
Additionally, the timing of the intake valves is staggered and their lift is
asymmetric, creating a swirl effect within the combustion chambers.
This increases burn speed and improves combustion stability and
allowable EGR rate. As the engine accelerates through 4400 rpm
(4800 rpm on Type S), the intake rocker arms transition to actuation
by high-lift, long-duration cam lobes designed to optimize high rpm
output.

The exclusive camshafts found in the Type S engine further increase
power output by providing longer intake valve duration, more valve
overlap and additional lift for the exhaust valves.



DUAL-STAGE INDUCTION SYSTEM

Fitted exclusively on the Type S model, this revolutionary induction
system is the heart of the class-leading 260 horsepower engine. This
system uses a large, two-chamber intake plenum. The chambers are
separated by a valve which opens at 3800 rpm and is actuated by an
electric motor.

During this valve’s closed-stage at low to mid engine speed operation,
a Resonance Charge condition exists in which pressure pulsations
between cylinder banks are separated. In doing so, air filling the
cylinders increases aided by resonance energy (Helmholz principle).

When this valve opens during mid to high engine speed operation, an
Inertial Charge condition is achieved and increased cylinder filling
occurs when the manifold volume (plenum) is increased and the
resonance condition is eliminated. This phenomena utilizes the high
flow mass to pressurize the manifold, producing a natural
"supercharger" effect.

This increased airflow and increased cylinder filling is the fundamental
reason for the efficient combustion and subsequent power. Additional
improvements were made to reduce air intake restriction and increase
total air flow volume through a larger 64mm bore throttle body, along
with an overall low restriction, air induction system, including a free
flow air filter.

PROGRAMED FUEL INJECTION (PGM-FI)

The CL’s Programmed Fuel Injection (PGM-FI) system is controlled
by a 16-bit, 32 MHz Central Processor Unit (CPU) which monitors
and controls numerous engine parameters. Throttle position, engine
coolant temperature, intake manifold pressure, atmospheric pressure,
exhaust gas oxygen content and intake air temperature are all
processed by the CPU. While tracking the operation of the engine
with position sensors on the crankshaft and both camshafts, the
PGM-FI CPU is also in constant communication with a CPU that
controls the 5-speed Sequential SportShift automatic transmission.
Fuel delivery is controlled by injectors mounted in the cast aluminum,
tuned-length intake manifold featuring a large plenum chamber to help
maximize airflow and increase power and torque.



EXHAUST SYSTEM

The 3.2CL’s high-flow, lightweight, dual tipped-exhaust system is
designed to offer low restriction performance while ensuring excellent
emissions and noise control. To help the Type S produce additional
horsepower, greater exhaust flow capabilities have been achieved
through a larger diameter exhaust pipe, an increased flow catalytic
converter and ultra-high flow rate capacity dual mufflers. These
enhancements to the Type S increase exhaust flow out of the engine
by over 30 percent compared to the 3.2CL. The Type S exhaust note
has also been tuned to provide an aggressive, performance-oriented
sound while minimizing excessive noise at cruising speed.



DIRECT IGNITION SYSTEM/KNOCK CONTROL

Proper ignition spark timing is critical to engine performance and
emission control, constantly changing depending on a multitude of
factors. If there is too little spark advance for the conditions, then
efficiency suffers; if there is too much spark advance, then the onset of
knocking (or pinging) can result in overheating and engine damage. To
ensure a properly timed spark, the CL relies on a new generation
knock control system. Based on a centrally positioned sensor in the
block that "hears" the first traces of knocking, the ignition timing is
advanced to the point of peak efficiency, but not beyond, even if fuel
quality is less than the specified unleaded premium. This fine spark
control allows the CL to operate safely (and more efficiently) with
greater spark advance than its predecessor. Another refinement to the
ignition system is the adoption of improved direct ignition coil units.
These compact and reliable units are positioned directly in the spark
plug access bores.



CONTROL OF NOISE, VIBRATION AND HARSHNESS

Though the CL’s powertrain was engineered for uncompromised
horsepower and consistent torque, special effort was devoted to
attaining higher standards of Noise, Vibration and Harshness (NVH)
control. Key engine attributes were analyzed to develop engineering
targets for smoothness and noise control. Both the 3.2CL and the
Type S engines reflect this effort with features like the compact, rigid
aluminum block and its unusually high resonant frequency, rigid forged
crankshaft, die-cast accessory mounts and stiff cast aluminum oil pan.



100,000-MILE TUNE-UP INTERVALS

The new CL offers tune-up intervals of 100,000 miles during which
only routine inspections and fluid changes are required. The
roller-follower design of the VTEC valve train reduces friction and
wear to the point that the screw-type tappet clearance adjusters do
not require inspection until 100,000 miles, at which point the
platinum-tipped spark plugs are also due for replacement.



DIRECT-ACTING CRUISE CONTROL

Even though the CL is a true enthusiast’s car, there may be occasional
situations where the driver of the new CL coupe decides to allow the
car to maintain cruising speeds by engaging the cruise control. In these
instances, the cruise control system’s Electronic Control Unit (ECU)
directly commands downshifts to the transmission ECU as required,
allowing the vehicle to more closely maintain the set road speed, even
in hilly driving conditions. The convenient steering wheel-mounted
cruise control buttons allow the driver to adjust speed in 1 mph
increments or disengage the cruise control without touching the brake
pedal.



5-SPEED AUTOMATIC TRANSMISSION

To maximize the performance capabilities of both the 3.2CL and
Type S V-6 engines, an advanced 5-speed automatic transmission
with a Sequential SportShift system was developed. Though the new
engine commands a significant role in the new CL’s improved
performance, the new 5-speed automatic transmission figures heavily
in measured performance gains and seat-of-the-pants driving feel.

The close ratios match the demands of varied driving situations while
the new transmission’s tall top gear ratio results in low cruising rpm’s
for reduced engine noise and lower fuel consumption.

Immediately noticeable from the driver’s seat is a marked
improvement in shift quality, relative to the four-speed automatic
transmission in the 1999 CL. The new 5-speed transmission
downshifts more quickly, with less shift shock, and is tuned much
more aggressively to take advantage of the new, more powerful
engine.

By sharing the idler and third gear clutches, the new transmission
provides a total of five ratios without a significant increase in size or
weight over typical 4-speed transmissions. Other improvements
include the addition of a first gear one-way clutch for smoother shifts
and a new heat exchanger design that moderates transmission
operating temperature more quickly and with less complexity. An
expanded torque converter lockup area provides a more direct
driveline feel, similar to a manual transmission.

Using Direct Control shift technology, the new transmission uses a
16-bit, 20 MHz ECU directly controlling transmission operation in
concert with the engine management system. Linear solenoids provide
precise, real-time control of the clutch on/off pressure in the CL’s
transmission. With superior clutch-engagement accuracy, the
sophisticated control logic system operates smoothly under all
conditions. To reduce noise, a bearing supports the idler shaft, and
gear-mesh contact ratio was refined.

Multiple safety and control strategies use interaction between engine
and transmission controllers to manage overall powertrain operation.
By limiting engine output torque and/or transmission clutch pressure,
sharp driveline shocks are eliminated. The engine is also prevented
from exceeding 5000 rpm in neutral and park.



SEQUENTIAL SPORTSHIFT SYSTEM

Both the 3.2CL and the Type S are equipped with a Sequential
SportShift system, similar to the one originally introduced in the NSX
sports car. The CL’s SportShift transmission operates as an
automatic or puts gear selection in the hands of the driver, much like a
manual transmission. By moving the console-mounted transmission
selector handle to the left of the "Drive" position into a special
SportShift gate, upshifts and downshifts can be commanded with a
quick fore or aft motion. Gear selection is indicated by an LED
display located in the tachometer face.

To foster the immediate feel of a manual transmission, in SportShift
mode, the transmission logic commands firmer shifts that are
approximately 10 percent quicker than in automatic mode.
Additionally, the system is engineered to deliver an unusually quick
response time to shift commands as compared to other semi-manual
automatic transmissions.

Typically, the CL’s transmission responds to a shift command in just
0.35 seconds, with the total shift completed in just over 0.9 second
from the initial lever movement. These figures are quicker than those
of semi-manual automatic transmissions of sports cars costing twice
as much as the CL.

The Sequential SportShift system parallels the operation of a manual
gearbox, but with built-in safety override features. The logic will not
allow a downshift that would cause the engine to over-rev in the
driver-selected lower gear. If the driver does not downshift while
slowing, the transmission will stay in the selected gear until the vehicle
approaches a complete stop and then will shift into first automatically.
During acceleration, except for shifting between 1st and 2nd, the
transmission will not up-shift automatically in SportShift Mode;
however, should the driver fail to command an upshift in time, the
engine ECU’s will cut off the fuel flow to prevent the engine from over
revving.

GRADE LOGIC CONTROL

By monitoring throttle position, vehicle speed and
acceleration/deceleration, then comparing these inputs with a map
stored in the transmission computer, the Grade Logic Control System
"knows" when the car is on a hill. The shift schedule is then adjusted
automatically to hold the transmission in a lower gear for better
climbing power, increased downhill engine braking and reduced shift
frequency.


CHASSIS Back to Top


OVERVIEW

The new CL has been engineered from the ground up to provide
extraordinary performance that rivals Europe’s finest mid-luxury
coupes. The engineering goals for the second generation CL chassis
have been achieved by enhancing sporty performance while
preserving luxury feel. These seemingly contradictory requirements
are embodied by the Global Mid-Size Platform. This new-generation
front-drive platform combines the packaging efficiency and
performance of a transversely mounted front-drive powertrain with
Acura’s latest thinking on suspension and chassis architecture.

Similar to the chassis architecture of the 3.2TL performance luxury
sedan, the new generation CL further enhances the pursuit of
advanced performance dynamics coupled with grand touring
refinement. The CL chassis rewards the enthusiast driver with more
neutral handling characteristics and less NVH (noise, vibration and
harshness) by employing isolated front and rear subframes and carries
its engine on vacuum-controlled front and rear hydraulic mounts. The
double-wishbone suspension has geometric refinements that
significantly improve the CL’s response to steering input. An
upgraded ABS disc brake system with larger front and rear discs and
more rigid front and rear calipers has been added along with
enhanced cornering grip through standard 16-inch wheels on the
3.2CL and 17-inch on the Type S.

The Type S suspension has been further tuned beyond the 3.2CL’s
already impressive capabilities to offer an even greater level of
handling performance through larger diameter rear stabilizer bar,
stiffer front and rear springs, more compression and rebound
damping, along with longer front bump stops.

These chassis elements of the new CL combine to create a high
performance coupe that steers, corners, brakes and drives more
aggressively and predictably than the car it replaces.

The following are the key areas of advancement to the new CL
chassis:

Ride and handling

Refined double-wishbone front suspension
New multilink double-wishbone rear suspension
Tire and wheel diameter is 16" for the 3.2CL and 17" on Type
S
Steering enhancements improve linearity of steering feel

Isolated front and rear subframes
Vacuum-controlled hydraulic front and rear engine mounts

Braking

Enlarged front and rear discs along with a drum-in-disc rear
design allow separation of service and parking brake systems
for improved effectiveness in high deceleration stops

Steering

Power steering with improved feel
Rubber coupling in steering column improves shock isolation
and maintains linearity of steering feedback

Safety

Standard Antilock Braking System (ABS)
Standard Traction Control System (TCS)
Vehicle Stability Assist (VSA) System -- Type S only

FRONT SUSPENSION



All Acura vehicles employ double-wishbone suspension for the
precise control of wheel motion that it provides. For the new
generation CL, Acura engineers redesigned the layout of the front
suspension to take advantage of the stiffness of the new front
subframe. The repositioned suspension arms deliver altered
suspension geometry contributing to the car’s responsive handling. A
shock tower bar also helps maintain precise suspension geometry
during cornering. Relative to the previous generation CL, the new
coupe rides on firmer coil springs and dampers with larger stabilizer
bars to provide a more confident driving feel and improved handling
characteristics.

Additional tuning to the Type S front suspension above and beyond
the 3.2CL include stiffer springs, increased compression and rebound
damping, along with longer bump stops to help fine tune the
suspension for more sporty handling. These suspension enhancements
allow the Type S to corner confidently and maintain an optimum body
stance for maximum performance.

REAR SUSPENSION

The CL’s rear suspension has been completely redesigned to provide
sporty handling and a smooth ride without intruding on interior or
trunk space.

The compact high-tension steel suspension links reduce weight and
carry the rear wheels through a wheel path that’s angled rearward to
improve bump compliance and limit bump steer. This geometry also
provides a much straighter toe-in curve, meaning that during
suspension motion, there is controlled "rear wheel steer" taking place.
Pillow joints are also applied to better control side-force steer while
reducing component friction to improve ride comfort. As in the front
suspension, rear spring rates have been increased, a larger stabilizer
bar added and dampers recalibrated to improve the CL’s handling
during hard cornering.

The Type S rear suspension, like the front, benefits from stiffer
springs, higher compression and rebound damping and receives a
larger diameter rear stabilizer bar to reduce body roll during
cornering.

FRONT AND REAR SUBFRAMES

The CL’s chassis rigidity and NVH benefit from its robust front and
rear subframes. In front, a perimeter frame consisting of a front
member, side members with a rear bulkhead beam used to form a
very strong structure that contributes to overall chassis stiffness and
frontal and offset frontal impact resistance.

Like the front subframe, the rear subframe forms a large,
rectangular-shaped perimeter frame and is made up of large cross
section members and smaller stringers that locate the rear suspension
and house the fuel tank. Both subframes are mounted to the body
with rubber isolators that dampen vibration in the low- and
mid-frequency ranges.

LOW ROLL CENTER

To help ensure precise and stable handling, the CL suspension
geometry has been designed with a lower roll center. The roll center
of the front suspension is 57 mm above ground level and 116 mm
above ground level in the rear.

HYDRAULIC ENGINE MOUNTS

To further isolate the cabin from vibration, the CL’s 3.2 liter engine is
mounted to the subframe with two electronically controlled, hydraulic
engine mounts and a side stopper mount. The hydraulic mounts are
tuned to minimize vibration by the transfer of fluid between two
hydraulic chambers in the mount, thereby changing the damping
frequency of the mount to help counter engine vibration.

STEERING

The steering must strike a balance between the isolation expected of
an upscale coupe and the immediate response of a pure sports car.
Both ends are served by the CL’s power steering. The torque-sensing
steering is light during low speed maneuvering and gets progressively
heavier as engine speed increases. For more responsive steering, the
new CL has a quicker steering ratio as compared to the
previous-generation CL.

To insulate the driver from road harshness without degrading steering
precision, a rubber coupling is positioned in the bottom end of the
steering column.

BRAKING SYSTEM

The new CL is equipped with larger diameter 11.8 in (300 mm)
ventilated front disc brakes with increased rotor thickness of 1.1 in
(28 mm) to provide confident braking power and fade resistance. In
addition, the CL now has a short ratio brake pedal to provide
immediate, consistent and predictable braking feel under all driving
conditions.

By increasing rotor diameter to 11.1 in (282 mm), further
enhancements in brake performance were achieved. The new
drum-in-disc brake design employs the disc portion of the unit for
dynamic braking, while the drum is used only for the parking brake
function. The parking brake is operated with a push on/off type floor
pedal, maximizing center console space between the driver and
passenger seats.

ANTILOCK BRAKING SYSTEM (ABS)

The CL’s standard 4-wheel Antilock Braking System (ABS)
enhances steering control during hard braking. Speed sensors at each
wheel send signals to the ABS control module. When the system
detects impending wheel lockup, it first holds, then reduces hydraulic
pressure to the affected wheel, letting it regain traction before full
braking resumes. The ABS function is also highly effective on
split-friction surfaces, in which the wheels on one side of the vehicle
have significantly less traction than those on the other.

While the 3.2CL features a three-channel ABS system, the Type S is
fitted with a special four-channel system that works in conjunction
with the VSA system. Both ABS systems operate in three-channel
mode during straight-line braking, apportioning braking power to the
front wheels independently and the rear wheels in tandem. This
enhances the driver’s ability to maintain steering control during panic
stops on slick road surfaces.

The Type S ABS system automatically switches to a four-channel
mode when the system senses high cornering forces. This allows the
ABS system to take advantage of weight transfer to the outside of the
turn during cornering and apply higher brake pressure to the outer
rear wheel for enhanced braking performance.

TRACTION CONTROL SYSTEM (TCS)

The standard equipment Traction Control System (TCS) on the CL
coupe detects wheel slip under acceleration and coordinates use of
braking and ignition retard to regain traction. For the Type S, TCS
utilizes sub-throttle and ignition retard as well as front wheel braking
and fuel cut.

In situations where the front drive wheels are on different friction
surfaces, such as when one drive wheel is on wet pavement while the
other is on dry pavement, the system applies braking action to the
wheel that’s slipping, allowing the tire with better grip to move the
vehicle. In addition, the system also reduces total engine power output
to minimize wheelspin.

VEHICLE STABILITY ASSIST (VSA)

First equipped in 2000 on the Acura 3.5RL flagship sedan, the Acura
Vehicle Stability Assist (VSA) system is standard equipment on the
3.2CL Type S model. Similar to the 3.5RL system, the CL’s
Acura-designed system orchestrates the throttle, injection and brakes
to seamlessly integrate traction control, antilock braking and stability
enhancement processes. This innovation is designed to assist the
driver in maintaining control during cornering, acceleration and sudden
collision-avoidance maneuvers by applying brake force to the right or
left front wheel as necessary and managing the throttle and injection
systems.

By monitoring input from eight vehicle sensors, the VSA system can
calculate a predicted range of vehicle response while constantly
monitoring the vehicle’s actual response and the driver’s control
inputs. If the actual response is outside the predicted response range
– as when cornering forces exceed the tire’s performance, for
example – VSA automatically intervenes with corrective action. In the
case of oversteer (which may lead to a spin), VSA applies braking to
the outside front wheel to counter the unintended yawing tendency.
On the other hand, if understeer is detected, VSA applies braking to
the inside front wheel and reduces engine power to turn the car back
on to the intended course.

Unlike some vehicle stability systems which can seem intrusive to
enthusiast drivers, the Acura VSA is calibrated to add to stability and
predictability, without stifling the driving enjoyment of the CL’s
carefully engineered chassis and double wishbone suspension. An
indicator light flashes on the instrument panel while the system is
actively enhancing the stability of the vehicle. A cockpit switch is
provided to disable the VSA and TCS while leaving the antilock
braking system fully functional.

WHEELS AND TIRES

With the enhanced performance capabilities of the new CL, tire and
wheel sizes were increased to accommodate the additional demands
of high performance driving. The 3.2CL benefits from 6.5-inch wide x
16-inch diameter aluminum alloy wheels with the 205/60R16 Michelin
MXV4 all-season tires. The 3.2CL incorporates an all-new
seven-spoke design with a five-bolt lug configuration for durability.

The 3.2CL Type S sports aggressive 7-inch wide x 17-inch diameter
aluminum alloy wheels. The 5-spoke layout incorporates an outer
rimless design to achieve a seamless contour from the center of the
wheel all the way out to the tire for an aggressive, sporty appearance.
Large openings in the wheel ensure proper ventilation of the brakes.
The Type S wheels are mounted with 215/50R17 V-rated,
all-season, high-performance Michelin Pilot MXM4 tires for excellent
cornering capability.


BODY Back to Top


OVERVIEW

The new CL coupe’s body has been completely redesigned and is
now based on the state-of-the-art Global Midsize Platform.
Compared to the previous generation coupes, the new CL unit-body
is six-percent stronger in torsional rigidity, 23-percent stronger in
bending rigidity, is longer overall, has a wider track, a wheelbase of
106.9 inches (2715mm) and boasts more interior room.

The new CL rivals the segment’s best competitors in all areas,
including fit and finish, safety, structural performance and overall
refinement.

A graceful and classic overall coupe silhouette, the CL's dynamic,
dimensional styling lines reflect a youthful, aggressive spirit and allow a
higher belt line.

A mission of quality and refinement leads the CL into 2001. Tightly
controlled noise and vibration keep the interior calm and quiet.
Heat-rejecting green glass provides the driver and passengers with a
climate-controlled, spacious view. Rigid door structures are created
by laser welding sheet steel of different thickness together before
forming, thus adding more strength at the door hinge, yet reducing
overall weight. Further refinements include a jointless front and rear
windshield molding and gas spring hood supports.

Noise, Vibration and Harshness (NVH) is controlled by various
elements throughout the vehicle to provide a comfortable experience
for the driver. Foam sound barriers in all body pillars, triple door seals
and an increased density dashboard insulator capture the varying
degrees of NVH. Extensive asphalt-based sandwich melt sheets are
used in rear wheel-house regions and in the floor. A fiberglass hood
insulator and additional engine room dashboard insulator create a
luxuriously calm driving experience. Finally, increased rigidity of the
steering hanger beam, steering column shaft and accelerator cable
bracket allow for a reduction of vibration in the steering wheel and
gas pedal.

A large 13.6 cu ft trunk provides more utility space while generous
head, leg, shoulder and hip room for front and rear passengers reflect
the increased total passenger volume of 90.0 cu ft, an increase of 5.3
cubic feet from the previous model.

As in all Acura vehicles, safety advancements provide occupants with
the utmost in protection. Side-impact door beams, an upper door
panel stiffener structure and door lining pads create a stronger outside
structure to keep the driver and passengers safer inside. Furthermore,
reinforced side-sills with added bulkheads for offset and side impact
protection, thicker floor cross members and strengthened front pillars
and roof side rail sections provide additional impact protection.
Additionally, reinforced center pillars help reduce auto body
deformation during side impact. For better visibility, Xenon High
Intensity Discharge (HID) headlights provide 40-percent more lighting
and 40-percent further coverage down the road than conventional
halogen headlamps.

Vehicle security is of major concern for Acura owners and several
steps have been taken to keep potential intruders at bay. Reinforced
door key cylinders, full frame windows and special body shielding
protects door-locking mechanisms and latches to make a break-in
more difficult. A standard immobilizer and security system cuts fuel
flow to the engine and sounds an alarm in the event of tampering.

To lengthen the life of the CL body, sophisticated corrosion resistance
techniques have been employed. Double-sided galvanized steel panels
as well as anti-acid-etch clear coat on dark colors helps protect paint
from acid rain and other corrosive elements. An anti-chipping primer
is applied to leading edges of hood and fenders, and PVC and wax
sealer are applied to the underbody to ensure a long-lasting body
structure.

STYLING

The beautiful exterior of the new CL coupe was styled to exude the
classic lines of 2-door coupes of the automotive past. Acura’s own
styling cues were adapted from the NSX supercar as well as the
original Legend Coupe. A long, sculpted hood and a short rear deck
along with large diameter performance wheels and tires mark the key
styling elements for this coupe.

A signature Acura pentagram grille adorns the front of the CL and
creates an aggressive "pointed" effect. The lines flow over the large,
oblong headlights with Xenon High Intensity Discharge (HID)
technology, initiating a character crease that flows along the side
profile of the car.

The large greenhouse glass area provides excellent visibility and has
been shaped to mimic that of the original Legend coupe, a winning
design that has greatly influenced Acura’s style since its inception.

A blunt tail design encompasses a large trunk area bookended by
triangular tail lights, providing a substantial and sporty rear design.

PRECISE FIT AND FINISH

The new CL coupe incorporates the latest techniques to achieve an
uncompromised level of fit and finish. Stiffened door structures,
laser-welded inner door panels, special plastic-encapsulated door
checkers and latches, and added sound damping materials all
combine to tune the closing sound of the CL’s doors. Special power
window motors increase window speed and reduce noise. Window
sealing is better with improvements to the door sash structure and
seals that are preformed for more reliability.

Key features:

The windshield wiper stopping position has been lowered to
beneath the hood to improve visibility and reduce wind noise.
Under-hood wiper washer nozzles have also been used.
Body gaps have been minimized to reduce wind noise and
complement a more streamlined cosmetic appearance,
specifically the front grille gap, door/fender cut line gap, outer
door handle gap and front and rear bumper gaps.

A very thin B-pillar has been used to provide a clean, seamless side
glass appearance.

UNIT BODY STRUCTURE

To achieve significant improvements in ride, handling and noise
reduction, the engineering goals for the new-generation CL unit body
centered around maximizing torsional and bending rigidity of the body
without adding unnecessary weight.

The CL unit body utilizes a high-strength cabin and ladder type
subframe with box section rails and strategically placed
reinforcements for maximum rigidity.>

The previous generation CL set new standards for rigidity of Acura
automobiles. The goal of the new CL was to improve on these
already impressive levels. Significant advances in design efficiency
make the CL’s body six-percent stronger in torsion. Bending strength
has been increased by 23-percent as well.

SAFETY STRUCTURE

The CL’s passenger "safety cage" was engineered from the earliest
stages of development to meet tough safety regulations. Using
computers to conduct extensive crash simulations, engineers studied
the impact forces on a "virtual car" to supplement actual prototype
crash testing. These tests led to the development of numerous safety
innovations in the design of the CL.

In frontal impacts, straight-section frame box rails with large
cross-sections feed impact energy directly into the main frame
structure. To meet new 2002 federal head-impact safety regulations,
the CL’s interior has energy absorbing roof-pillar garnishes and roof
lining designed to help reduce injury to the occupants. To better deal
with offset-impact energy, reinforcements are placed at the roof side
rails, floor frame, A-pillars and front and side frame members.

SIDE IMPACT PROTECTION

Extensive reinforcements were made to the CL’s structure to help
protect occupants during side impacts. The B-pillar thickness was
increased and stiffened to minimize the possibility of intrusion during a
side impact while a substantial cross member runs transversely across
the floor pan to reinforce the passenger cabin structure. The doors
have special twin-side impact reinforcement beams as well as
impact-absorbing door-lining pads.

DOOR CONSTRUCTION

The CL utilizes highly rigid door structures with full-frame windows
for improved protection, weather sealing and reduced wind noise. By
laser welding the door panels, steels of different thickness could be
used in the inner door construction.

Noise, Vibration and Harshness (NVH)

Throughout the body, features like foam roof pillar separators, wheel
arch extension melt sheets and vacuum-controlled hydraulic engine
mounts are used to minimize noise intrusion into the car’s interior.
Noise attenuation material is used throughout the CL, resulting in a
vehicle that is serenely quiet, making long trips less fatiguing. Triple
door seals, increased density dashboard insulator and a fiberglass
hood insulator capture the varying degrees of NVH. Finally, increased
rigidity of the steering hanger beam, steering column shaft and
accelerator cable bracket allow for a reduction of vibration in the
steering wheel and gas pedal.

XENON HIGH INTENSITY DISCHARGE (HID)
HEADLIGHTS

Typically an extra-cost option, if offered at all on competitive cars, the
CL follows the RL and TL sedans’ lead and is equipped with
standard reflector-type Xenon High Intensity Discharge (HID) low
beam headlights. Three times as efficient as conventional halogen
lamps, the Acura HID system uses less energy, with more than double
the bulb life. The useful range of illumination on low beam increases
by 40 percent and the increased beam width eliminates the need for
separate fog lights. The CL’s high beams use conventional halogen
bulbs. An auto-off feature turns off the headlights 15 seconds after the
driver’s door is closed or the doors are locked.

ROAD LAMPS

The CL is equipped with road lamps located below the headlights in
the front bumper. These lights are used in conjunction with both the
low beam and high beam headlights and add a sporty appearance to
the front end design.

KEYLESS TRUNK LATCH

For greater security and clean rear styling, the CL’s trunk has no key
cylinder. The trunk lid can be released by the keyless remote, by a
button on the driver’s door panel, or by a backup manual release
accessible through the pass-through in the rear seatback.

ADVANCED MATERIAL TECHNOLOGY

A wide range of advanced materials and technologies are used in the
CL. Here is a listing of the more significant advances:

Laser-welded inner door panel blanks increase strength while
minimizing weight
High-strength steel door panels for greater dent resistance
Body-color drip rail roof molding
Lightweight fiberglass hood insulator
Anti-acid-etch clear coat
Chrome-plated injection-molded door handles

100-percent of plastic materials are ABS, engineered thermoplastics,
polypropylene or polyethylene and are all recyclable.


INTERIOR Back to Top

OVERVIEW

The new CL coupe’s larger interior was designed to offer a
comfortable and ergonomically correct environment to distract little of
the driver’s attention from the road. The new cockpit-style interior
envelops the driver to provide easy access and a clear view of
controls and gauges. Its 2+2 layout with four individual bucket seats
echoes that of classic Gran Turismo coupes of the past. Much
advanced thinking and developmental engineering was committed to
the development of the CL’s intimate and classic design while
maintaining the goals of a larger interior space and a sporty
appearance.

The sporty styling is further enhanced in the Type S model, with
exclusive perforated leather seats and steering wheel cover,
metallic-faced instrument displays and unique Type S-badged
perforated leather shifter knob.

STYLING

The designers set out to create the CL’s interior based on three
pivotal, interior elements: Smart, Luxurious and Elegant. Smart
describes the ergonomic and usability aspects of the interior, from the
easy to reach instruments to the available Acura Navigation System to
the rear storage compartments. Luxurious defines the CL’s interior as
a "reward" for hard-earned success – a corner office with individual
bucket seats for four adults surrounded by rich leather and
wood-grained trim. Elegant defines the simple and "frill-free" design of
the interior with a flowing overall style.

SEATS

The high-back front seats incorporate a large adjustable head restraint
for neck support as well as providing necessary bracing during a rear
impact collision.

All seating positions in the CL coupe utilize U.S.-sourced leather, with
a perforated pattern on Type S models for enhanced ventilation and a
sporty appearance. An all new lumbar support design provides
optimal lower back support on long distance journeys, while the
driver’s seat provides a heated bottom cushion and backrest; the
passenger’s seat has a heated bottom cushion only, so as not to
interfere with the passenger side air bag sensors. The driver’s seat
incorporates an eight-way power adjustment for optimal driving
positioning while the passenger seat offers four-way power
adjustment. All four seating positions in the CL are equipped with
three-point seat belts.

INSTRUMENTATION

A micro-processor-controlled instrument cluster informs the driver of
engine speed, vehicle speed, outside temperature, fuel level, dual-trip
meters and a secured door signal. Easy to read analog instrumentation
with illuminated pointers steadily climb the large diameter, individually
recessed tachometer and speedometer faces while a bold LCD digital
indicator displays gear position when the transmission is in its
semi-manual SportShift mode. The Type S model incorporates a
metallic-faced instrument cluster motif for a sporty and aggressive
look.

AUTOMATIC CLIMATE CONTROL

The new CL is equipped with a state-of-the-art automatic climate
control and air conditioning system. This quiet, yet powerful system
quickly cools or warms the cabin to provide a constant and
comfortable driving environment. The fully automatic climate control
can also be overridden manually. In CL’s equipped with the optional
Acura Navigation System, the override controls have been
incorporated into the computer controlled, touch-screen LCD
monitor.

In addition, a passenger compartment micron air-filtration system
traps dust and other airborne particulates and also traps bacteria as
small as one micron.

PREMIUM MUSIC SYSTEM

The Acura/BoseÒ Music System is standard equipment on the CL.
Designed and built as an integral part of the car, this sound system is
engineered to take advantage of the CL’s unique acoustics. All six
speakers have been carefully selected and placed and the bass
response has been enhanced by adding co-axial speakers to the rear
parcel tray.

Another Acura is the 6-disc, in-dash CD changer that allows for
multi-disc music convenience without a separate trunk-mounted unit
or cartridges. Though it looks similar to a single disc, in-dash unit, the
Acura 6-disc in-dash changer stores up to 6 compact discs inside the
dash-mounted face unit. The system also incorporates a cassette deck
for increased audio flexibility. To allow the driver to remain focused
on the road, radio stations, CD selections and volume can be
conveniently operated from the standard steering wheel mounted
audio system controls.

ACURA NAVIGATION SYSTEM

The latest generation of the Acura Navigation System is the only
factory-installed option available on both the 3.2CL and the Type S.

Similar to the systems in the 3.5RL and the 3.2TL, the CL’s
Navigation System utilizes Global Positioning System (GPS) data
received from satellites in orbit with the earth. Used in conjunction
with its own inertial guidance system, the CL’s Digital Versatile Disc
(DVD) database precisely pinpoints locations and guides the driver to
destinations. When asked to guide the driver from one location to
another, the system provides both audio and visual cues, helping the
driver find the proper destination quickly and easily and with minimal
distraction. Verbal instructions such as, "Keep right" or "Next exit on
the right" give the driver the basic direction. A Liquid Crystal Display
(LCD) screen, located high on the center console, provides a moving
map with direction arrows, detailed information on street names,
turning instructions and driving distance.

The large six-inch, color LCD display has a picture-in-picture
capability, allowing the driver to see the "big picture" map and get
detailed turning instructions simultaneously. The system will also
display the vehicle’s current position at any time, and a balloon
function instantly shows the address of any location selected on the
map. Points of interest in the database can also be searched by simply
inputting the destination’s phone number. The touch-screen display
can also be used to provide manual control over the CL’s automatic
air conditioning operation. The voice guidance control has 11 different
volume settings and automatically mutes the Acura/Bose Music
System front speakers momentarily when direction commands are
given.

The Acura Navigation System incorporates a matte-finish
touch-screen that resists fingerprinting and is easy to read.
Destinations can now be entered with significantly fewer keystrokes
thanks to an enhanced logic program, and route calculation time has
been reduced. In addition, a route can be pre-programmed with up to
five destinations, and the system can also be set to have the moving
map display icons for gas stations, restaurants or ATMs. The DVD
on-board database system has 3.7 million points of interest,
restaurants, hotels, ATMs, clothing stores, and tourist attractions. A
virtual nationwide directory can now be accessed by the driver simply
with a few inputs to the Acura Navigation System. In addition, all
freeway networks and major metropolitan areas in the continuous
48-states are mapped by the system.

COMFORT AND CONVENIENCE

Though the CL coupe has been engineered to be a high-performance,
driver’s car, this goal was not achieved at the expense of ride comfort
and passenger amenities. In addition to those already mentioned, the
CL incorporates a formidable roster of standard comfort and
convenience features.

Key features:

HomeLinkÒ remote system operates three different devices
Security system with remote keyless entry
Automatic day/night rearview mirror
Overhead sunglasses storage compartment
Large dual cupholder in the console with a removable liner for
easy cleaning
Illuminated two compartment center console, with internal
power port and hidden storage area
Padded center armrest slides fore and aft for comfort
Soft-touch instrument panel and interior panels
Glove box has a damper-controlled door and interior light
In dash memo pad tray (not available with Acura Navigation
System)
Trunk opening switch on driver’s door panel and main switch
in glove compartment
Sliding sun visor extensions
Illuminated power window switches
Speed-synchronized intermittent wipers
Dual cupholder for rear passengers
Lockable rear storage compartment
Lockable trunk pass through

KEYLESS REMOTE ENTRY SYSTEM WITH MEMORY
FEATURE

The CL coupe is equipped with a standard keyless remote entry
system that allows the driver and passenger side doors to be locked
and unlocked at the push of a button. In addition, the CL comes
equipped with two separate remotes, each with a unique signal that
controls the driver’s memory seat feature and the side mirrors. When
remote number one is utilized to unlock the door, the driver’s seat and
side mirrors will automatically reset itself to the number one seat
memory setting. Likewise, when remote number two is used, the
driver’s seat and side mirrors will reset itself to the number two seat
memory setting. This is an effective convenience feature when the CL
is being shared by two drivers with different driving positions. An
automatic trunk release is also integrated into the remote fob.

REVERSE-TILT SIDE MIRROR

The CL incorporates a convenient reverse-tilt side mirror on the
passenger side of the vehicle. When the remote mirror control is set in
the center position, the reverse-tilt feature is activated. When the
transmission is shifted into the "reverse" position, the passenger-side
mirror will automatically tilt down to provide a clear view of the curb
for parallel parking. The mirror will automatically return to its previous
position for driving when the shifter is moved out of the "reverse"
gear.

POWER GLASS MOON ROOF

Another standard feature on the highly-equipped CL, a glass moon
roof with tilt-up and sliding action can be used to increase interior
ventilation or opened fully for open-air motoring. Its thin, efficient
design is a contributing factor in the coupe’s abundant headroom.

TRUNK STORAGE

With room for four, the CL can carry luggage for four in its trunk as
well. With a generous 13.6 cu ft of trunk space, the CL has plenty of
space for golf clubs and overnight bags. A wide opening and low
lift-over height ease loading and unloading. A lockable flip-down
pass-through door to the passenger compartment expands utility
further, for carrying long objects. A cargo net with multiple attachment
points makes it easy to restrain cargo. In addition, a utility hook is
mounted on the side wall of the trunk area to accommodate grocery
bags while a small storage compartment on the far left side keeps
small, incidental items from rolling around. The jack is in a closed
compartment on the right side of the trunk, with a toolbox positioned
nearby.



SAFETY Back to Top

Though performance and drivability were the focal points during the
development of the new CL coupe, these characteristics should never
be at the expense of safety, security and accident avoidance. The CL
is engineered as a total safety package with features designed to help
in collision avoidance and to enhance the safety of the passengers in
the event a collision is unavoidable.

Featured as standard equipment on the Type S, the Acura Vehicle
Stability Assist (VSA) system combines the Traction Control System
(TCS) and Antilock Brake System (ABS), and synchronizes these
two elements to assist in enhancing driver control of the vehicle during
sudden collision-avoidance maneuvers. Other safety items in the area
of collision avoidance include Xenon High Intensity Discharge (HID)
headlights and the center high-mounted stop light.

Should a collision prove unavoidable, the CL protects its occupants
with a computer-designed safety structure with front and rear crumple
zones, and side impact intrusion counter-devices help protect the
passenger compartment. To supplement the structural engineering in
the body, the CL features standard driver and front passenger
Supplemental Restraint System (SRS) dual-threshold air bags with a
dual-stage passenger air bag, seatbelt pretensioners with load-limiters,
and an advanced side air bag system.

VEHICLE STABILITY ASSIST (VSA) SYSTEM

First equipped in the 2000 model year Acura 3.5RL flagship sedan,
the Acura Vehicle Stability Assist (VSA) system is standard
equipment on the 3.2CL Type S model. Similar to the 3.5RL system,
the CL’s VSA system orchestrates the throttle, injection and brakes
to seamlessly integrate traction control, antilock braking and stability
enhancement processes. This innovation is designed to assist the
driver in maintaining control during cornering, acceleration and sudden
collision-avoidance maneuvers by applying braking force to the right
or left front wheel as necessary and managing the throttle and injection
systems.

By monitoring input from eight vehicle sensors, the VSA system can
calculate a predicted range of vehicle response while constantly
monitoring the vehicle’s actual response and the driver’s control
inputs. If the actual response is outside the predicted response range
– as when cornering forces exceed the tires’ performance, for
example – VSA automatically intervenes with corrective action. In the
case of oversteer (which may lead to a spin), VSA applies braking to
the outside front wheel to counter the unintended yawing tendency.
On the other hand, if understeer becomes pronounced, VSA applies
braking to the inside front wheel and reduces engine power to turn the
car back into the intended course.

Unlike some vehicle stability systems which can seem intrusive to
enthusiast drivers, the Acura VSA is calibrated to add to stability and
predictability, without stifling the driving enjoyment of the CL’s
carefully engineered chassis and double wishbone suspension. An
indicator light flashes on the instrument panel while the system is
actively enhancing the stability of the vehicle. A cockpit switch is
provided to disable the VSA and TCS while leaving the antilock
braking system fully functional.

ANTILOCK BRAKING SYSTEM (ABS)

The CL’s standard 4-wheel Antilock Braking System (ABS)
enhances steering control during hard braking. Speed sensors at each
wheel send signals to the ABS control module. When the system
detects impending wheel lockup, it first holds, then reduces hydraulic
pressure to the affected wheel, letting it regain traction before full
braking resumes. The ABS function is also highly effective on
split-friction surfaces, in which the tires on one side of the vehicle have
significantly less traction than those on the other.

While the 3.2CL features a 3-channel ABS system, the Type S is
fitted with a special 4-channel system that works in conjunction with
the VSA system. Both ABS systems operate in 3-channel mode
during straight-line braking, apportioning braking power to the front
wheels independently and the rear wheels in tandem. This enhances
the drivers ability to maintain steering control during panic stops on
slick road surfaces.

The Type S ABS system automatically switches to a 4-channel mode
when the system senses high cornering forces. This allows the ABS
system to take advantage of weight transfer to the outside of the turn
during cornering and apply higher brake pressure to the outer rear
wheel for enhanced braking performance.

TRACTION CONTROL SYSTEM (TCS)

The standard equipment Traction Control System (TCS) on the CL
coupe detects wheel slip under acceleration and coordinates use of
braking and ignition retard to regain traction. For the Type S, TCS
utilizes sub throttle and ignition retard as well as front wheel braking
and fuel cut-off.

In situations where the front drive wheels are on different friction
surface, such as when one drive wheel is on wet pavement while the
other is on dry pavement, the system applies braking action to the
wheel that’s slipping, allowing the tire with better grip to move the
vehicle. In addition, the system also reduces total engine power output
to minimize wheelspin.

SAFETY STRUCTURE

The CL’s passenger "safety cage" was engineered from the earliest
stages of development to meet tough safety regulations. Using
computers to conduct extensive crash simulations, engineers studied
the impact forces on a "virtual car" to supplement actual prototype
crash testing. These tests led to the development of numerous safety
innovations in the design of the CL.

In frontal impacts, straight-section frame box rails with large
cross-sections feed impact energy directly into the main frame
structure. To meet new 2002 federal head-impact safety regulations,
the CL’s interior has energy absorbing roof-pillar garnishes and roof
lining designed to help reduce injury to the occupants. To better deal
with offset-impact energy, reinforcements are placed at the roof side
rails, floor frame, A-pillars and front and side frame members.

SIDE IMPACT PROTECTION

Extensive reinforcements were made to the CL’s structure to help
protect occupants during side impacts. The B-pillar thickness was
increased and stiffened to minimize the possibility of intrusion during a
side impact while a substantial cross member runs transversely across
the floor pan to reinforce the passenger cabin structure. The doors
have special twin-side impact reinforcement beams as well as
impact-absorbing door-lining pads.

DUAL SUPPLEMENTAL RESTRAINT SYSTEM (SRS) AIR
BAG

The CL is equipped with a driver’s and front passenger’s air bag
Supplemental Restraint System (SRS). The driver’s air bag is located
in the steering wheel hub, while the passenger’s air bag is located on
top of the dash. To ensure maximum reliability, the sensors use
gold-plated electrical connectors. As in all Acura automobiles, the
front passenger air bag is designed to deploy upward along the
windshield and then back toward the occupant. This provides a large
cushion to help protect the front passenger.

DUAL-THRESHOLD AIR BAGS

To further enhance the operation of the sophisticated SRS system, a
sensor detects whether the driver’s and front passenger’s seat belts
are fastened. The dual-threshold system uses this information to
determine how much impact force will be required to make the bag
deploy. If either front seat occupant is unbuckled, their respective air
bag will deploy at a lower impact force collision to help protect the
unbelted occupant. Conversely, if the seat occupants are buckled,
their respective air bag will require a larger impact to activate the
bags.

DUAL-STAGE PASSENGER AIR BAG

To enhance the protection of the front seat passenger during a variety
of frontal impact collisions, varying air bag deployment speed is used
in the CL. This exclusive system designed specifically for Acura uses
a dual-stage inflator, and automatically adjusts the deployment of the
front passenger SRS air bag based on the severity of the crash.
During a slower speed collision, the dual-stage inflator system for the
dash-mounted air bag is triggered in sequence, resulting in slower
overall air bag deployment with less initial force. During a higher
speed collision, both inflators operate simultaneously for full
immediate inflation, to correspond with the greater impact force.

FRONT SEATBELT PRETENSIONER WITH
LOAD-LIMITER

The CL is equipped with standard driver and front passenger seatbelt
pretensioners. A pyrotechnic device is utilized in the seatbelt retractor
mechanism which tightens the seatbelt in the event of a collision. This
feature assists in keeping the occupant firmly in the seat during the
initial collision, further enhancing the effectiveness of the seatbelts. The
pretensioner works in conjunction with a load-limiter which reduces
forces on the occupant during a frontal collision.

ADVANCED SIDE AIR BAG SYSTEM

Likes its RL and TL siblings, the new CL features an
Acura-exclusive, seat-mounted advanced side air bag system for the
driver and front seat passenger. The front passenger seat is equipped
with an innovative occupant position detection system designed to
disable side air bag deployment and prevent injury to a small child (or
small adult) if they lean into the side air bag deployment path. A series
of seven sensors in the passenger seatback determine the size and
position of the occupant to determine if it is safe to deploy the side air
bag. If the child is in the deployment path of the side air bag, the
system will disable the side air bag from inflating. If the child returns to
an upright seating position, the side airbag will reactivate so it can
deploy and protect the child in a side impact.

XENON HIGH INTENSITY DISCHARGE (HID)
HEADLIGHTS

Typically an extra-cost option, if offered at all on competitive cars, the
CL follows the RL and TL sedans’ lead and is equipped with
standard reflector-type Xenon High Intensity Discharge (HID) low
beam headlights. Three times as efficient as conventional halogen
lamps, the Acura HID system uses less energy, with more than double
the bulb life. The useful range of illumination on low beam increases
by 40 percent and the increased beam width eliminates the need for
separate fog lights. The CL’s high beams use conventional halogen
bulbs. An auto-off feature turns off the headlights 15 seconds after the
driver’s door is closed or the doors are locked.

ANTI-THEFT ALARM SYSTEM

The CL is equipped with a standard keyless-remote entry feature
which locks and unlocks the doors and opens the trunk at the push of
a button. The key fob also operates the standard security system on
the CL. When an unauthorized attempt is made to enter or start the
vehicle, the horn sounds, the flashers are activated and the starter
system is disabled. The system automatically arms itself after the
doors are locked and is disarmed when a door is unlocked with the
keyless-remote fob or with the door key. The alarm can also be
activated by depressing the "panic" button on the remote-keyless fob.

SECURITY / IMMOBILZER SYSTEM

The key for the CL is imbedded with a transponder that
communicates with an electronic microprocessor unit in the ignition
that prevents the car from being started, even if a mechanical
duplicate of the proper key shape is used. A transponder built into the
key signals the immobilizer control unit that the key is genuine. If
hot-wiring is attempted, or an unauthorized key is used, the car simply
will not start.




MANUFACTURING Back to Top

OVERVIEW


The new CL is assembled exclusively at the Honda of America
Manufacturing facility in Marysville, Ohio. The vast majority of
components and parts are sourced and manufactured in the United
States. Local suppliers were brought in on the project as early as
possible to ensure the highest quality from the very beginning of mass
production.

GLOBAL ENGINEERING AND DEVELOPMENT

As part of Acura’s ongoing effort to design and produce products
where they will be sold, the move to produce the CL in Ohio was
part of a natural progression. Development of the CL combined
Acura’s resources in Japan with those of the Acura product planning
offices in the United States. Research and Development facilities in
Los Angeles and Ohio, along with the Anna, Ohio engine plant and
the Marysville, Ohio auto assembly plant were integral partners during
the development of the CL.

ANNA ENGINE PLANT

Since producing its first engine in 1985, the Anna Engine Plant (AEP)
has ramped up to a total production of 900,000 engines and related
components per year. With 2700 associates and a total investment in
facilities of $907 million, the Anna plant achieved a pace of 1000 V-6
engines per day for model year 1999. To provide the manufacturing
capacity required for the CL, the factory’s complement of 3500-ton
casting machines was increased to four, and new manufacturing
technologies and equipment were put in place for the CL’s crankshaft
and braking system.

MARYSVILLE AUTO PLANT

With a start of production dating back to 1982, a total investment of
$1.8 billion and more than 5800 associates, the Marysville Auto Plant
(MAP) has attained a new quality standard with the production of the
CL. Capable of producing a total of 1800 cars per day, MAP’s
flexible manufacturing environment allows seamless production of the
CL on the same line as the Acura 3.2TL sedan and the Honda
Accord models despite vast differences between the three vehicles.

Makes me remember why I got one:P

Justin.CL

DAN IS THE MAN when it comes to information. If I ever want to challenge what my local Acura dealership tells me I am going to ask Dan.

UNCTYPE-S

not a whole lot on the bose system.....gee i wonder why.

nice review nonetheless

Justin.CL

I hate that damn bose system. I love having a 6 disc in dash changer but those speakers suck. I have a buddy with a J-30 and his bose stays messed up ever since he tried to put subs and an amp in with the factory head unit.

He ended up just taking out all of the bose crap, head, speakers, and all.

flint

iTrader: (2)

good information

TL_Type_S

PROGRAMED FUEL INJECTION (PGM-FI)

The CL’s Programmed Fuel Injection (PGM-FI) system is controlled
by a 16-bit, 32 MHz Central Processor Unit (CPU) which monitors
and controls numerous engine parameters


....33mhz...no wonder i couldn't break into the 15's stock

goldmemberer

I really don't know much about car electronics, but to control maybe 100-200 parameters (if that, my guess), 33 MHz (33,000,000 cycles/second) sounds enough. But inform me know if you know something I don't.

Guru

Do you mean break into the 14's stock becayse you just have to put your foot all the way down to get a 15s 1/4 mile.

darrinb

i remember reading all that and more

mrsteve

iTrader: (1)

Teh Snaps

FUCK I THINK MY BRAIN IS GOING TO BLOW UP FROM ALL THAT READING/INFO lololol

nesto

weird, i had a 93 infiniti j30 before this 01 type-s , and i connected 2 12 w6's to the bose speakers and they ran ok. But i did replace the head unit. Bose is so complicated though...

Tosh

"ROAD LAMPS

The CL is equipped with road lamps located below the headlights in
the front bumper. These lights are used in conjunction with both the
low beam and high beam headlights and add a sporty appearance to
the front end design."

I always wondered what their purpose was....

dallison

thank you very much marysville for such poor fit and finish and all the rattles.

so i guess the more cars in a day means better production?????

Tosh

"ROAD LAMPS

The CL is equipped with road lamps located below the headlights in
the front bumper. These lights are used in conjunction with both the
low beam and high beam headlights and add a sporty appearance to
the front end design."

I always wondered what their purpose was....

gto2050

Not much good for anything else.

mrsteve

iTrader: (1)

If by sporty apperance they mean 5 watt bulbs that do absoluetlye nothing. Must have been real sporty considering they got rid of them for '03

Bobbydoedoe

heres the link where this guy copy/paste from

http://hondanews.com/CatID3072?view=...&archives=2003

theres a lot more artcile on this site then what he has provided,
enjoy

Dan

Not without a time machine My cut/paste was from a press release in 2000 .

03 CL TypeS

Say what???

SkillmatiC

jen

I have a system (JL) and i don't have any problems with the speakers. Well, I quess they are starting to rattle, but the whole car rattles. I am wanting to upgrade to Infiniti Perfects. The Kappa's I had rocked.

jen

phipark

holy old thread

Hobo

damn

PissedOffCLOwner

"Both versions of the V6 engine transfer their power through an
electronically controlled 5-speed automatic transmission with the
Acura Sequential SportShift system. This sophisticated transmission,
similar to the one first introduced in the Acura NSX supercar,
provides smooth shifting and a refined driving experience with
uncompromised driver control."

They should have also added..."BTW, all of our trannies are defective."

SirSixSpeed

Way to wake up an old thread!

J/K, I'm a noob too.

cltypeSLOW

old thread but still a neat read none the less.

HotTubb

Does anyone have a clue where to get one other than at the local incompetent Acura dealer?

-Chris

garneau39

Wow thats some good info

musty hustla

I always loved the CLs. This back when Acura knew how to make cars that looked different from each other.

I think my V6 TSX has that dual induction system described above.

KR3J//

There's a very informative section about the dual induction system. That solves any question I had about possibly removing that butterfly valve. It's there for a reason!