Quote:
Originally Posted by j.reed
And please explain bsfc peak? or better yet...how do i find it for my car? i know that is something like brake specific fuel consumption...but i thought that was for figuring out proper AFRs on the dyno?
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here are some:
http://ecomodder.com/forum/showthrea...-got-1466.html
Basically, if you know (or make a reasonable guess) under what load/rpm your engine makes the most power for a given amount fuel, you can control the throttle and shifting to maximize your efficiency during acceleration.
The big trick is knowing when to stop accelerating and start coasting, so you don't turn all that gas energy into brake heat.
In absence of actual data, I usually shift at 2700 rpm and keep the throttle at 3/4 open. My tdi is different, it is wide open throttle and shift at 2000 rpm.
here is the tdi graph, the peak "oval" is at the top of the torque curve centered at about 1800 rpm. When I shift at 2000 rpm it drops down to about 1600 rpm and so I accelerate from 1600 to 2000 rpm at the top of the graph where it is most efficient (plus I don't brake much)
