Throttle-by-Wire

[Bob - Uni]

Hello Bernd,

I guess that is a case of manufacturers implimenting the system as a
"do what I mean" system instead of "do what I say" so that John H
Citizen can get in the car and drive with that little bit more safety.
I recall reading an article a while back on manufacturers
doing/researching this kind of thing. One that sticks out in my memory
is a system where the ECU interupted steering and braking so that in
a situation where the driver is braking and steering to avoid
something and the vehicle starts to understeer and lock the brakes,
they panic and hit the brakes harder and turn the steering more - the
ecu interprets this as "I want to slow down as much as possible and
turn more in that direction" so comes off the brakes a bit and
straightens the wheels a little.
Personally I will do without ABS, traction control etc for as long as
I can.

Sunday, January 20, 2002, 12:40:47 PM, you wrote:

BF> It would appear that some of the OEM implementers have never
BF> actually driven a car. e.g. some VW TDI (so it's not really
BF> throttle, but it illustrates the problem) will reduce engine torque
BF> to idle if the brake and accelerator are pressed simultaneously.
BF> Well, boggle me pink, but isn't that precisely what you do when you
BF> heel-and-toe for downchanges into a tricky bend/corner to avoid
BF> breaking traction?

-- 
Best regards,
 Bob                            mailto:rcs07 at uow.edu.au

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