Quick question
Safety Car
Joined: Nov 2006
Posts: 4,217
Likes: 39
From: Northern VA
Here's what we know...remembering that the RL originally came out in 2004
ELECTRONICALLY CONTROLLED, SPEED-SENSING, VARIABLE POWER ASSIST RACK-AND-PINION STEERING
Precise steering performance is an essential facet of the 2010 RL. The goals were to combine a light effort, yet linear steering feel at low speeds with a heavier and more solid steering feel at higher speeds. Such a request is beyond the range of traditional steering systems, thus the RL uses a unique electronically-controlled, speed-sensing, variable power assist rack-and-pinion steering system. Together with SH-AWD™ and the neutral handling characteristics of the chassis, the RL is engineered to feel like a smaller car than it actually is.
Compared to traditional mechanically controlled hydraulic power steering, the RL's speed-sensing steering assist unit is controlled electronically. Not only does the system free up additional engine power, but the electronically controlled assist provides a very linear and direct steering feel regardless of vehicle speed. In particular, the on-center feel is very precise and linear, with no discernible "dead spot."
contrasted with the TL
ELECTRIC POWER STEERING (EPS)
Taking a cue from Acura's famed NSX supercar, the 2011 TL uses an advanced form of Electric Power Steering (EPS). The system is designed to provide outstanding steering feel and optimally calibrated steering assist for performance driving. In addition, the EPS helps improve TL fuel mileage by 0.7 mpg in the city and 0.8 mpg on the highway by eliminating parasitic power losses associated with a traditional hydraulic power steering pump. Principal components of the EPS system are a torque-sensing steering box, the electronic boost motor located as an integral part of the steering rack, and a dedicated electronic control unit.
The biggest advantage for EPS is the ability to specifically tune the steering feel to suit the enthusiast driver. Computer algorithms recognize the vehicle speed and provide low steering effort for parking maneuvers, then begin to firm up steering feel as speed increases to increasingly provide a more solid feel at higher speeds. The EPS tuning is unique for the SH-AWD®, featuring more pronounced steering effort build up at high speed.
With the 6-speed manual transmission TL SH-AWD®, the EPS system is further tuned to deliver a slightly heavier feel as speed increases thus generating more confident mid- to high-speed driving dynamics.
The EPS system on the TL requires 2.65 turns lock-to-lock. Curb-to-curb turning diameter is 38.4 feet— a significant accomplishment considering the TL's long wheelbase.
The Civic Si and Hybrid were also introduced in 2006 with EPS.....
ELECTRONICALLY CONTROLLED, SPEED-SENSING, VARIABLE POWER ASSIST RACK-AND-PINION STEERING
Precise steering performance is an essential facet of the 2010 RL. The goals were to combine a light effort, yet linear steering feel at low speeds with a heavier and more solid steering feel at higher speeds. Such a request is beyond the range of traditional steering systems, thus the RL uses a unique electronically-controlled, speed-sensing, variable power assist rack-and-pinion steering system. Together with SH-AWD™ and the neutral handling characteristics of the chassis, the RL is engineered to feel like a smaller car than it actually is.
Compared to traditional mechanically controlled hydraulic power steering, the RL's speed-sensing steering assist unit is controlled electronically. Not only does the system free up additional engine power, but the electronically controlled assist provides a very linear and direct steering feel regardless of vehicle speed. In particular, the on-center feel is very precise and linear, with no discernible "dead spot."
contrasted with the TL
ELECTRIC POWER STEERING (EPS)
Taking a cue from Acura's famed NSX supercar, the 2011 TL uses an advanced form of Electric Power Steering (EPS). The system is designed to provide outstanding steering feel and optimally calibrated steering assist for performance driving. In addition, the EPS helps improve TL fuel mileage by 0.7 mpg in the city and 0.8 mpg on the highway by eliminating parasitic power losses associated with a traditional hydraulic power steering pump. Principal components of the EPS system are a torque-sensing steering box, the electronic boost motor located as an integral part of the steering rack, and a dedicated electronic control unit.
The biggest advantage for EPS is the ability to specifically tune the steering feel to suit the enthusiast driver. Computer algorithms recognize the vehicle speed and provide low steering effort for parking maneuvers, then begin to firm up steering feel as speed increases to increasingly provide a more solid feel at higher speeds. The EPS tuning is unique for the SH-AWD®, featuring more pronounced steering effort build up at high speed.
With the 6-speed manual transmission TL SH-AWD®, the EPS system is further tuned to deliver a slightly heavier feel as speed increases thus generating more confident mid- to high-speed driving dynamics.
The EPS system on the TL requires 2.65 turns lock-to-lock. Curb-to-curb turning diameter is 38.4 feet— a significant accomplishment considering the TL's long wheelbase.
The Civic Si and Hybrid were also introduced in 2006 with EPS.....
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