Rod

Sorry if this is a repost, but I don't remember having seen this posted before.

ZeroShift

ZeroShift is a new technology for shifting gear ratios in zero milliseconds. The ZeroShift mechanism replaces synchromesh or dog-clutches so most manual transmissions can be converted. Additionally, ZeroShift FlatLiner is a control system that manages the shift for a smooth transition. FlatLiner manages the engine inertia and engine speed. While ‘modifying’ existing transmissions is possible, this is simply a fast-track route to market. A 100% ZeroShift gearbox can be more compact and fully automated without shift forks and rails/barrels.


------- FASTEST & SMOOTHEST-------

Never before have ‘smoothest’ and ‘fastest’ coincided. Never before have smoothest and lightest/smallest coincided. ZeroShift is fastest, smoothest, lightest, smallest AND most efficient (in mechanical and emissions terms). In ANY transmission application, ZeroShift will deliver an improvement over whatever transmission is currently used. ZeroShift engineering simplicity and elegance also mean its component count is less than other transmissions.

Firstly, a ZeroShift ratio change is smooth so acceleration or longitudinal ‘g’ force is uninterrupted through the shift - the yellow ZeroShift ‘g’ trace is a straight line. A manual or AMT transmission will have a pronounced dip (the white line). An automatic will gently slur through the shift (the grey line). Only one other gearbox can match ZeroShift’s ‘g’ trace: a dual-clutch transmission (DCT, or DSG in Audi-speak). ZeroShift beats DCT in every other discipline.


------- FLATLINER -------

The concept of an instant shift - given that the world has done without for nearly a century - is alien. It would appear that to change gear instantly demands an instant speed change of the crankshaft. This is true but this is not what happens in a ZeroShift. The elliptical highlight in the diagram shows that the engine revs adjust over time and the slope (rate of change) is dynamically adjusted by the FlatLiner controls.

So: ZeroShift does not detonate the transmission or the engine. In fact, ZeroShift is easier on the engine, the clutch, the transmission and all the joints and bushes on the way to the driven wheels.


------- THE REVOLUTION -------

ZeroShift is capable of replacing EVERY type of current transmission. From Racecar Engineering magazine (Feb 2004):
“ZeroShift has the potential to revolutionise automotive transmissions to the point where, putting our necks on the line here, it is reasonable to expect that in 10 years time every [vehicle] in the world will be built with a gearbox operating on the ZeroShift principle. … be prepared for a revolution.”


------- 8 ZEROSHIFT FACTS -------

• ZeroShift can be up to 40% lighter and smaller than a manual transmission, currently the smallest and lightest gearbox type
• ZeroShift is as mechanically efficient as a manual transmission, currently the most mechanically efficient. By being smaller and lighter, ZeroShift contributes to better vehicle fuel economy
• ZeroShift is the fastest shift - you cannot go quicker than zero milliseconds.
• ZeroShift is the smoothest shift - driveline torque is constant across a shift so longitudinal ‘g’ (acceleration) is constant
• ZeroShift further assists fuel economy (and reduces emissions) because FlatLiner eliminates fuel enrichment ‘spikes’ in shifts. FlatLiner makes tiny, accurate adjustments
• ZeroShift encourages the move towards smaller engined vehicles by delivering a performance advantage between the gears rather than ‘in gears’. A 1.4 litre ZeroShift car would outperform a 1.6 manual and be as smooth as the 2.0 automatic (which it would also outperform!)
• ZeroShift is relevant to ALL vehicle/transmission sectors because - as can be seen above - it beats or matches ‘best of the rest’ in every category
• ZeroShift is fastest and smoothest so the same transmission type is equally effective in an F1 car and a limousine. It delivers the best performance and the best fuel economy. The ability to marry opposite extremes is unique and gives rise to a unique new way of driving

mattg

wow, i wonder if that would work on a cl-s.

nandowong

nice