Engine BMEP - From Output Data

Brake Mean Effective Pressure from engine power, displacement, and speed - the primary engine-load benchmark.

BMEPEngineMetric

Shaft powerkWSpeedrpmEngine displacementLStroke

BMEP: 11.1bar

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

BMEP = \frac{P \cdot 60}{V_d \cdot n \cdot z}

Symbol	Meaning	Unit
$V_d$	Swept displacement	m³
$n$	rpm	rpm
$z$	Strokes per cycle

Source: Heywood - Internal Combustion Engines

In short

Brake Mean Effective Pressure from engine power, displacement, and speed - the primary engine-load benchmark.

Learn the theory Engine Performance Monitoring: PMI Systems