Quote:
Originally Posted by jtbo
Why rolling resistance increases with the speed?
edit:
Here is something that is in Wikipedia about diesel engines:
https://en.wikipedia.org/wiki/Diesel_engine
If that is so, then there is no point of using high load with my old mechanical diesel. |
Not exactly, look at a BSFC map of a diesel engine, efficiency still goes down quite a bit at partial load. However I think the very high compression ratios and lack of throttle make the losses smaller. I guess a good thing to look at is idle consumption perhaps, you'll notice that a diesel uses less fuel than a gasoline engine of the same displacement when idling, but it probably doesn't even manage to cut idle consumption by 50% (I might be wrong, this is just some number I found once).