Decelleration Fuel Cut

[Nicholas Parker]

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!)

Cheers, Nick Parker.

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org