Quote:
Originally Posted by ttrainxl
What is decel fuel cut? This is something all cars come with? How does it cut fuel while decelerating? The cylinders still need to fire.
Remembering to hit a switch on the dash every time you slow down sounds tiring.
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Decel fuel cut is exactly when it sounds like. When the throttle is fully released while the trans is in gear and the RPM is high enough, usually at least a few hundred RPM above idle, the ECU completely stops firing the fuel injectors and the engine is just spun by the tires through the drivetrain. No reason to keep firing the cylinders when power isn't being requested. As far as I know, virtually every electronically fuel injected car has this feature with the possible exception of some very early ones.
Agreeed, that's why I'm looking for a way to automate the regen. It's not so bad for me since most of my driving is on the highway and I don't have to slow down much, but I can't even imagine having to do that in Chicago traffic!
