Postby xtech » January 9th, 2011, 10:17 am
Did u know your VR4 tiptronic is supplied by Porsche ???
Which explains the higher top speed over mitsu manual box.
Found information showing it was developed in conjunction by Porsche, ZF and Bosch.
Porsche originated the idea, ZF made the gearbox and Bosch responsible for the electronic control tiptronic logic program then licensed it out to MMC and other car makers
The Porsche Tiptronic Transmission:
Based on an automatic transmission with torque converter, besides conventional auto mode it offers a manual override allowing the driver to shift by pushing the shifter forward and backward. Note that it is no quicker than a conventional auto. It only intends to enhance driving fun through involving the driver.
Shifter with + and - positions
Shift button on the steering wheel of Tiptronic S
The auto mode has 5 different programs to suit different driving style, something like the "Sport", "Economy" and
"Winter" mode in traditional autoboxes. The computer choose program according to driving style. For instance, frequent full-throttle operation and brisk release of throttle indicate a sporting driving style, thus "fast" program will be selected.
Even in manual mode, the computer may intervene under harmful conditions. For instance, if the driver let the rev exceeding redline without upshift, the computer will shift automatically.
Tiptronic S .
In 1995, a newer version called Tiptronic S launched. It offers fingertip control button mounted on the steering wheel spoke, thus allow the driver can to shift without loosing concentration on the road.
Who use it ?
Porsche Tiptronic / Tiptronic S
Audi / Volkswagen Tiptronic / Tiptronic S - licensed by Porsche)
Mitsubishi Invecs-II Sport Mode - MMC programmers simplified the tiptronic logic program and licensed by Porsche
Peugeot 607 - licensed by Porsche
Hyundai XG - licensed by Porsche
Honda S-matic
BMW Steptronic
Chrysler AutoStick
Toyota E-shift
Alfa Romeo Q-system
Mercedes One-Touch
Volvo Geartronic ( licensed by Porsche)