Quote:
Originally Posted by Deezler
Test drive, whether the engine in the BSFC chart you posted was at WOT is not a function of engine rpm. If you reference the top line of the data range, that is exactly what those two circle data points are, at WOT. The chart contains all data from zero load to full load across the entire rpm range of the engine. The vertical axis is engine load (torque). We need a more solid BSFC explanation thread that we can link to. Maybe I'll start drafting one.
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Your explanation matches my understanding.
I'd love to have a link to cite as an authoritative source explaining exactly how a BSFC map (not curve at WOT) is produced.
And ideally several real world examples of interpreting BSFC maps to achieving maximum FE. Something like -
- Here is the BSFC map for V engine.
- V engine is in W car:
- curb weight
- Cd
- Cda
- Crr
- X speed manual trans with gears y1, y2, ... yX
- Z differential/final drive gear ratio
- Therefore, on level ground accelerate (thusly ...) from 1st to 2nd.
- Accelerate (thusly ...) from 2nd to 3rd.
- ...