Fuel Injector Sizing Calculator
Injector flow rate from engine HP and fuel type.
Inputs
%
Results
Injector size (cc/min)
361
Injector size (lb/hr)
34.4
Total fuel flow (lb/hr)220
Fuel consumption (GPH)36.2
Duty cycle at target (%)80
Max HP at 100% duty500
Pressure correction1
Injector count8
How to Use This Calculator
- Enter Target HP, Number of injectors, and BSFC (lb/hp·hr).
- Set Max duty cycle (%) and Fuel pressure (PSI).
- Review Injector size (cc/min) and Injector size (lb/hr).
- Use Total fuel flow (lb/hr) and Fuel consumption (GPH) to inform your decision.
Ad Placeholder
Related Calculators
Turbo Sizing Calculator
Turbocharger selection from engine displacement and power target.
Intercooler Sizing Calculator
Intercooler efficiency from charge air temp and flow rate.
Exhaust Flow Calculator
Exhaust pipe diameter from engine output and RPM.
Compression Ratio Calculator
Static CR from bore, stroke, and chamber volume.
Ad Placeholder