Engineering · Diesel — Performance
An engine indicator card (PV diagram) is used primarily to determine a cylinder's:
- AExhaust gas opacity
- BIndicated power and combustion quality✓ Correct
- CCooling water flow rate
- DLube oil consumption
Explanation
The area of the indicator diagram represents work done per cycle, giving indicated mean effective pressure and indicated power, and its shape reveals timing and combustion problems.
Authority: Diesel Engines (USCG engineering topic)
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