Fuel Pump Calculator

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Calculates the required fuel pump flow rate based on engine horsepower and other factors.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Engine Horsepower (BHP), Fuel Type, Fuel Injector Duty Cycle (%), and Brake Specific Fuel Consumption (BSFC) - lb/hr/HP in the units shown.

Step 2

Read Required Fuel Pump Flow Rate and Required Fuel Pump Flow Rate (GPH) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Engine Horsepower (BHP): 300; Fuel Type: Gasoline; Fuel Injector Duty Cycle (%): 80; Brake Specific Fuel Consumption (BSFC) - lb/hr/HP: 0.5

Required Fuel Pump Flow Rate: 187.5 lb/hr; Required Fuel Pump Flow Rate (GPH): 31.25 GPH

Engine Horsepower (BHP): 400; Fuel Type: Gasoline; Fuel Injector Duty Cycle (%): 80; Brake Specific Fuel Consumption (BSFC) - lb/hr/HP: 0.5

Required Fuel Pump Flow Rate: 250 lb/hr; Required Fuel Pump Flow Rate (GPH): 41.66666667 GPH

Engine Horsepower (BHP): 500; Fuel Type: Gasoline; Fuel Injector Duty Cycle (%): 80; Brake Specific Fuel Consumption (BSFC) - lb/hr/HP: 0.5

Required Fuel Pump Flow Rate: 312.5 lb/hr; Required Fuel Pump Flow Rate (GPH): 52.08333333 GPH

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