electronic throttle

On Mar 11, 4:15*pm, wrote:
> On Thu, 11 Mar 2010 13:22:06 -0600, Bob Cooper > wrote:
> >In article >,
> says...
>
> >> EVERYONE is using drive by wire, or has plans to. It has MANY
> >> advantages - and is no more prone, by design, to failure than a cable.
>
> >Sure. *That's why all those cables in past cars went haywire and opened
> >up throttles. *Preaching to the choir, you are.
> >You recall all the incidents of million-car recalls because of that,
> >right?
>
> >> A very simple electrical fault can totally screw up a mechanical cable
> >> connection too. A bad ground can allow fault current to flow through
> >> the throttle cable, melting the plastic sheath, causing a sticking
> >> throttle. It has happened. I've seen it.
>
> >Sure. *Thousands of time, probably. *Millions of cars were recalled for
> >that, weren't they? *Throttles going wide open all over the place. *
> >Those were terrible times.
>
> >> Mechanical devices are MORE subject to failure than electronics
>
> >Right. *That's why multiple transitors, resistors, lines of code, servo
> >motors, and yards and yards of wiring are so much more dependable than a
> >cable and a return spring attached to the driver's foot via a pedal.
> >Just makes sense.
>
> You can believe what you like. Properly designed and implemented
> electronic controls are more reliable than properly designed and built
> mechanical systems. Ther is NO WEAR, and NO MOVING PARTS. Moving parts
> either wear or seize or break in time.
> If electronic devices are operated within their design voltage and
> temperature parameters they can last virtually forever. 10s of
> thousands of operating hours at the minimum.- Hide quoted text -
>
> - Show quoted text -

While the actual electronics might be very reliable, there are moving
mechanical parts at both ends of the throttle control system
(accelerator pedal on one end, throttle plate on the other). And the
underhood enviroment can be very challenging - hot, wet, subject to a
lot of shock and vibration - and of course incompetent mechanics....

Ed

On Thu, 11 Mar 2010 14:44:49 -0800 (PST), Ed White
> wrote:



>
>While the actual electronics might be very reliable, there are moving
>mechanical parts at both ends of the throttle control system
>(accelerator pedal on one end, throttle plate on the other). And the
>underhood enviroment can be very challenging - hot, wet, subject to a
>lot of shock and vibration - and of course incompetent mechanics....
>
>Ed
All of which can also cause a cable or mechanical lncage to stick- - -
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