since the driver *never* directly controls the fuel in anything except a diesel. Even with a carburetor, the driver controls the *air* and the fuel is added in response- Wtih a carburetor the driver does control fuel on acceleration.
since the driver *never* directly controls the fuel in anything except a diesel. Even with a carburetor, the driver controls the *air* and the fuel is added in response- Wtih a carburetor the driver does control fuel on acceleration.
Every model of every car has some incidence rate of "sudden acceleration". After all, we're all human. After Audi installed a brake/shifter interlock, that was the end of it for the 5000. Nobody ever really implicated the
5000's pedal arrangement. So it appears the only variable was the people who owned Audi 5000's were more likely to blame somebody else for their mistake.To believe that anything mechanical actually happened in that case is to ignore all the evidence.
So, if sudden acceleration happens for real, and you're too ignorant of your car to understand what went wrong, then there's nothing you can do. You can't explain what happened to anybody. What I mean is, if your throttle sticks, you need to say "my throttle stuck" instead of "I suffered sudden acceleration due to the negligence of a large corporation" so everybody won't dismiss you as an idiot. Your throttle is pretty simple. If it moves, you'll have to figure out why.
If you can't do that, just turn the switch off like you're supposed to and deal with the shame in private.
I doubt that, I think it's for slower acceleration. If they put "throttle response" in the hands of the computer, it can respond whenever it wants to. At least that's the feeling I get when I drive one. If the computer decides to downshift, it can wait before it actually opens the throttle.
This has got to be much easier for engine management. Cheaper? No. That's just stupid, to think a motor-driven throttle is cheaper than a cable.
Drive one.
Of course, but you're missing the point that if they were going to open the throttle when you wanted to, they wouldn't need throttle by wire. That's what it's for, to allow the engine to respond in a more orderly (slower) way.
That may well be one reason, but it is hardly the only reason.
Matt
One motor-driven throttle that can be used on EVERY engine in EVERY car made by the company is cheaper to produce than a different throttle cable for every engine/chassis combination. Not case-by-case, but in terms of mass production.
As far as slowing down acceleration- that's mostly (my guess) to control emissions and boost fuel economy. The real software benefit of TBW is that the computer can cut the throttle whenever the automatic transmission shifts, which allows the transmissions to be built even lighter and cheaper than they already are because now the computer can guarantee that there's no such thing as a "wide open throttle upshift," which transmissions used to have to be able to handle.
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