Decelleration Fuel Cut

Tony Bryant brd at paradise.net.nz
Sat Jan 20 21:19:04 GMT 2001




>Hi List,
>            Under what condition is 'decceleration fuel cut' used?  Is fuel
>totally stopped to the engine?  How can you tell (via MAP, TPS, RPM
>whatever) if the engine is stealing torque(braking - absorbing power)
versus
>producing torque for either constant speed or acceleration?  Is cutting
fuel
>always appropriate during engine decelleration? (I'm guessing no, as you
>could be decelleration while going up a hill decelerating slower than
>gravity would accelerate you in the reverse direction so theres alway a
load
>on the engine!)
>


If you (or anyone else) are contemplating this on a race car - DONT! - its
lethel, and just asking for the rear end to step out when you aren't
expecting it.

I have the dents to prove it.



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