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🚗 BMEP Calculator
Calculate Brake Mean Effective Pressure, engine performance, and efficiency metrics
📐 BMEP Formulas
BMEP = (2π × T × n) / (V_d × N)
BMEP = (P_b × 60) / (V_d × N × n)
BMEP = (P_b × 120) / (V_d × N × n) (2-stroke)
η_vol = (V_actual / V_theoretical) × 100
BMEP = brake mean effective pressure, T = torque, n = number of cylinders, V_d = displacement, N = engine speed, P_b = brake power, η_vol = volumetric efficiency
💡 Tips
- BMEP indicates engine efficiency and performance
- Higher BMEP means better engine performance
- Typical BMEP: 8-12 bar for gasoline, 12-20 bar for diesel
- Consider thermal efficiency in calculations
- BMEP varies with engine speed and load
- Use consistent units (bar, kPa, or MPa)