Method and device for the determination of the indicated mean effective pressure of an internal combustion engine

摘要

Procedure for determining the average indicated pressure of an internal combustion engine has the following steps: determination of the instantaneous velocity of each piston associated with each cylinder of the engine; calculation of the time integral of the product of instantaneous velocity multiplied by instantaneous velocity; division of the integral by the path of the piston in each cylinder. To calculate the average pressure for the engine an average value is calculated from the individual cylinder values. The device comprises a means (20) for calculating the piston (2) instantaneous velocity in the chamber (1) and means (10) for calculating the instantaneous pressure (10). A means (30) is provided for the calculation required in determining the engine average pressure.