PeachParts Mercedes-Benz Forum - View Single Post

JamesDean · #14 01-29-2014, 11:46 PM

Quote:

Originally Posted by BenzTurbo

If you do or figure out a way how to, let me know! I spend quite a bit of time idling my car so this would be good in really hot weather too! Speed up a/c compressor, clutch fan, and have good charging voltage. In at least the new duramax's you can set the cruise at idle and the engine will jump to 1000rpm. It just seems like if i try to hold lets say 1100rpm in my car, once the turbo spools a little and there is a bit less drag from some of the belt driven accessories the engine "takes off" so the cruise amp would have to somehow prevent that without it being jmpy. If not, it's a runaway switch

The cruise control *should* be able to regulate the speed, that's what it does with the speedometer signal anyway, I'm just going to be feeding it a different signal.

It should detect frequency increase on the signal line and back off the actuator. I plan on doing some testing when it get a bit warm.

I also plan on--somehow--adding in some safety items like a multiple cutout mechanisms. One would cut the signal if engine RPM approached X Hz, or if the gear selected was moved. The brake pedal too will be a cutout as it naturally is for the cruise system.

Lots of cool possibilities. I actually had no thought about the hot weather applications like increased A/C output or alternator charging.