Engineering · Diesel — Performance
Mean effective pressure (MEP) of a diesel cylinder is best described as:
- APeak firing pressure
- BAn average pressure that, acting on the piston over the stroke, represents the work done✓ Correct
- CCompression pressure only
- DScavenge air pressure
Explanation
MEP is the constant pressure that would produce the same work per cycle as the actual varying cylinder pressure; it is a measure of how much useful work each cylinder is doing.
Authority: Diesel Engines (USCG engineering topic)
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