Modern cars = wow aren't they smart!!

[Zoig]

Olny thing i am missing from the newer car's is the Syncro rev matching from Datsun 370Z.

http://www.youtube.com/watch?v=XC9ZzGNlLms&feature=player_embedded#

The SynchroRev™ Match Mode (S-MODE) automatically adjusts the engine speed by controlling the engine throttle. This helps provide accurate engine speed control that will help achieve smooth gear shifting and reduces shift shock on clutch engagement.

WHEN DOWNSHIFTING
-The engine speed is automatically increased to the target engine speed before the clutch is engaged.

WHEN UPSHIFTING
-The engine speed is automatically kept during and after the engine speed lowers to the target engine speed.

DEACTIVATING THE S-MODE SYSTEM
-To deactivate, push and hold the S-MODE switch for
more than 1 second. The S-MODE indicator will
turn off.

Just for a mind exceresize, i've been trying to figure out what should i need to do, to mimic the same functionality in an older manual car.
Basically there should be a way to identify in witch gear the car is in, then there should be somekind of (servo?)motor to work on the throttle. The on-off switching if the system could be done via cruise control switch on the clutch pedal, and lastly there should be a control logic that maches engine speed with the current gear and speed. Tehcnically this should be all to get it working
As an add in extra for this, the same logic could be used to engage autocheck displays red backlightning to work as shift light and/or as a warning when the gear i am about to select would over rev the engine.

anyone interested in contributing to that exceresize?

[90/90qs]

I'd say the sensing has to be very fast, and it would have to signal between when the lever is place in gear, and when the clutch is let out. I can't figure out any other <fail proof> way to determine whether the driver is down or up-shifting... unless you used accelerometers, and logic to know what gear [was] selected. Then what if you drop from 4th to 2nd.
I just use my foot

[Zoig]

What gear was and what is should actually not matter. When the Clutch is pressed the Circuit is activated. Since in my mind there should be maps for each gear rpm vs speed, then all the intput the system really needs is to know what gear is engaged next.

For example when changing from 4th gear on 3000rpm to 2nd gear on 6000rpm, the system should only compare current engine speed with the car speed to determine if throttle should be engaged or not. Since 6000rpm is a bit higher than 3000 the system should compare the engine speed to the vehicle speed. the engine speed is a lot lower(and getting lower constantly because throttle is released) the system should engage the servo motor on the throttle to increase the engine speed, until 6000rpm(defined in the map) is achieved, and keep constantly adjusting the engine speed to match the vehicle speed(because clutch is engaged, the car is also slowing down) until the clutch is released.

The servo motor programming should be quite agressive to achive really fast rpm matching. to make it faster the system should understand the next gear as soon as possible, but not so early that the gear lever movement in neutral could give false readings.

Also as a safety feature the gear shift light should lit whenever the gear maps run out of defined speeds, so instead of over revving the light is lit.

I have thought of 2 methods. 1st is to use 5/6 switches to give a solid signal when gear is fully engaged(should be defined from witch pont gear is/will be fully engaged and not moving around in neutral). The switches should be monted somewhere along the gear linkage, to minimize the slack from the gear lever.

Another option is similiar to computer joystick, where for example gear shifter is monitored like computer joystick on X and Y axis. So the different cordinates mark different gears. the latter solutoin should be more precise. but the fist one is more robust.