BMEP Calculator

Formula

The formula to calculate the brake mean effective pressure (BMEP) is:

\[ BMEP = 150.8 \times \frac{T}{D} \]

Where:

\( BMEP \) is the brake mean effective pressure (psi).
\( T \) is the torque (lb-ft).
\( D \) is the displacement (CID).

What is BMEP?

BMEP, which stands for brake mean effective pressure, is a measure of the total pressure that if applied to the pistons of an engine through an entire stroke, would produce the power output of the engine.

Example Calculation

Consider an example where:

Torque (T): 300 lb-ft
Displacement (D): 400 CID

Using the formula to calculate the BMEP:

\[ BMEP = 150.8 \times \frac{300}{400} = 113.1 \text{ psi} \]

This means that the brake mean effective pressure for this example is 113.1 psi.