Fuel injector size calculator

Estimate the per-injector flow implied by explicit target power, BSFC, duty-cycle and fuel-density assumptions.

Per-injector flow estimateEnter values to calculate

BSFC connects power to fuel mass

Brake-specific fuel consumption estimates pounds of fuel per horsepower-hour. Divide total fuel mass flow by injector count and the chosen maximum duty-cycle fraction.

Rated flow depends on fuel and pressure

The cc/min conversion uses the fuel density you enter. Actual injector flow also depends on differential fuel pressure, injector characterization and the fuel system.

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