Turbocharger - Surge Margin

Turbocharger surge margin - the distance between operating point and surge line on the compressor map.

TurbochargerSurgeMargin

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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

SM = (\dot m_{op} - \dot m_{surge}) / \dot m_{op}

Symbol	Meaning	Unit
$\dot m$	Air mass flow	kg/s

Source: ABB Turbocharging Handbook

Turbocharger surge margin - the distance between operating point and surge line on the compressor map.