How to calculate BSFC calculator?

BSFC indicates the mass of fuel consumed to produce one unit of power over one hour; lower BSFC means better fuel efficiency.

Use the formula: BSFC (g/kWh) = (fuel_rate_kg_per_hr × 1000) / power_kW

Using the BSFC calculator calculator: an example

Example values: fuel consumption = 12 kg/hr and power output = 45 kW.

Step-by-step calculation:

1. Convert fuel rate to grams per hour: 12 kg/hr × 1000 = 12,000 g/hr.
2. Divide by power output: 12,000 g/hr ÷ 45 kW = 266.7 g/kWh.
3. Round and report: BSFC ≈ 267 g/kWh (interpret relative to engine benchmarks).

Frequently Asked Questions

What units does BSFC use?

BSFC is usually reported in grams per kilowatt‑hour (g/kWh), representing mass of fuel per unit energy produced.

How do I convert between kg/hr and g/kWh?

Multiply kg/hr by 1,000 to get g/hr, then divide by power in kW to obtain g/kWh.

What is a typical BSFC value for diesel engines?

Modern diesel engines commonly range from about 200 to 260 g/kWh depending on load and efficiency.

Can BSFC be used to compare different engines?

Yes; compare BSFC values at similar operating points because BSFC varies with engine speed, load, and conditions.