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traction control algorithms



 
 
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  #11  
Old December 21st 09, 12:37 PM posted to rec.autos.simulators
rcgldr[_2_]
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Posts: 42
Default traction control algorithms

> It seems that for some cars, TC is achieved by skipping ignition
> for a few steps.


That would end up putting unburnt fuel and air into the exhaust, which
would ignite and probably do some damage, or at least create a lot
of unwanted head in the exhaust system. It's more likely that TC
systems skip fuel delivery to cylinders in a cyclic pattern perhaps
from 1 cylinder every 4 revolutions to 2 cylinders every 2 revolutions
switching which cylinders are skipped to keep temps even. The other
method is to retard the spark a bit, but generally that doesn't cut
much power.




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  #12  
Old December 23rd 09, 01:24 PM posted to rec.autos.simulators
Byron Forbes
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Posts: 212
Default traction control algorithms

"rcgldr" > wrote in message
...
>> It seems that for some cars, TC is achieved by skipping ignition
>> for a few steps.

>
> That would end up putting unburnt fuel and air into the exhaust, which
> would ignite and probably do some damage, or at least create a lot
> of unwanted head in the exhaust system. It's more likely that TC
> systems skip fuel delivery to cylinders in a cyclic pattern perhaps
> from 1 cylinder every 4 revolutions to 2 cylinders every 2 revolutions
> switching which cylinders are skipped to keep temps even. The other
> method is to retard the spark a bit, but generally that doesn't cut
> much power.
>
>
>
>


Went to an Aussie V8 Supercar race a few weeks ago - you should hear
those things "BOOM" between gear changes due to ignition cut. Awesome at
first, annoying after about an hour.

 




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