CI engine performance test


by kannans
Tags: engine, performance, test
kannans
kannans is offline
#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
Kozy is offline
#2
Oct2-12, 06:47 AM
P: 118
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
pnorm91 is offline
#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
Kozy is offline
#4
Oct18-12, 04:00 AM
P: 118

CI engine performance test


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


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