Traction Control

[am018]

I'm surprised nobody has mentioned Land-Rovers new  Hill Descent System  so far
in this thread, I is I am told very effective  but I suspect may not prove
robust enough for really hard environments.

Andy Macfadyen

fastski at mailexcite.com wrote:

> Just a few comments on various posts.  Mercedes ICS(stability control)
> events will slow the car down, but this is a philosophy issue. GM cars
> (Caddilac and Corvette) will still accelerate during ICS events.  Cutting
> fuel to cylinder turns the engine into a air pump and since the cutout is
> for multiple revolutions the real danger is to the catalytic converter which
> can melt if too much spark retard and cylinder cut out are used.  This is
> based on experience with production engines, I don't know what will happen
> to a 13 to 1 compression engine.  Traction control can be done without
> individual rear wheel speeds without or without a limited slip if you are
> only controlling engine power and not brake torque.  Even four channel ABS
> systems (front drive cars with diagonal split brake systems) link the rear
> brake control for stability concerns.  Three wheel speed sensors are used on
> most rear drive ABS vehicles exceptions are usually Bosch 4wd ABS and rwd
> brake enhanced TCS vehicles.  Throttle by wire or throttle relaxers (both
> use electric motors) are being used on quite a few cars now and the throttle
> control is probably faster than anyone can move the throttle pedal.
>
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