Engine - Pcomp vs Pmax Ratio
Ratio of peak firing pressure (Pmax) to compression pressure (Pcomp) - the simplest indicator of injection timing quality on a slow-speed 2-stroke.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Compression pressure (no fuel) | bar | |
| Peak firing pressure | bar |
Source: MAN ES Operation Manual; WinGD X-Series Engine Data
In short
Ratio of peak firing pressure (Pmax) to compression pressure (Pcomp) - the simplest indicator of injection timing quality on a slow-speed 2-stroke.