About Brake-Specific Fuel Consumption Calculator
BSFC measures the fuel efficiency of an engine by calculating the fuel consumption rate per unit of power output.
Formula: BSFC = Fuel Flow Rate / Power Output
Typical BSFC Values:
- Gasoline Engines: 250-350 g/kWh (0.4-0.6 lb/hp-hr)
- Diesel Engines: 200-300 g/kWh (0.3-0.5 lb/hp-hr)
- Turbo Diesel: 170-220 g/kWh (0.28-0.36 lb/hp-hr)
Key Points:
- Lower BSFC values indicate better fuel efficiency
- Diesel engines typically have better BSFC than gasoline engines
- Optimal efficiency usually occurs at mid-load and mid-RPM ranges
Applications:
- Engine performance analysis and tuning
- Fuel economy comparisons
- Hybrid vehicle system design
