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CI engine performance test

by kannans
Tags: engine, performance, test
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kannans
#1
Sep17-12, 02:26 PM
P: 1
why the mechanical efficiency and brake thermal efficiency curve increases as load increases and reaches a maximum value and then again decreases( in contand speed test)
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Kozy
#2
Oct2-12, 06:47 AM
P: 130
Because with more load at a constant speed you have a wider throttle opening, an engine is at best efficiency when completely un-throttled.
pnorm91
#3
Oct16-12, 07:30 PM
P: 30
Quote Quote by Kozy View Post
Because with more load at a constant speed you have a wider throttle opening, an engine is at best efficiency when completely un-throttled.
Are you saying that across the board? It seems to me that you would be more or less looking a bell curve for this efficiency. It seems that the thermal efficiency is going to decrease at a near exponetial rate as the power increases.

Kozy
#4
Oct18-12, 04:00 AM
P: 130
CI engine performance test

Volumetric efficiency tends to fall as speed rises, if that is what you mean?


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