Scavenge Air Pressure - 2-Stroke Estimate

Estimated 2-stroke scavenge-air pressure at a given load given turbocharger pressure ratio and ambient conditions - baseline for verifying cylinder fill and smoke-density performance.

EngineScavengeT/C

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

p_{scav} = p_{amb} \cdot \pi_c - \Delta p_{CAC} - p_{amb}

Symbol	Meaning	Unit
$p_{amb}$	Ambient pressure	bar(a)
$\pi_c$	T/C compressor pressure ratio
$\Delta p_{CAC}$	Charge-air-cooler pressure drop	mbar

Source: MAN ES Project Guide - Scavenge air

In short

Estimated 2-stroke scavenge-air pressure at a given load given turbocharger pressure ratio and ambient conditions - baseline for verifying cylinder fill and smoke-density performance.

Learn the theory Engine Performance Monitoring: PMI Systems