Method and apparatus for calculating Indicated mean effective pressure of internal combustion engine

摘要

shown mean effective pressure calculation method for an internal combustion engine according to the present invention is mounted on the cylinder of an internal combustion engine, a first step of the pressure measurement unit measuring the internal pressure cylinder by crank angle; A second step of the control is calculated by subtracting the pressure difference between the crank angle by the crank angle of the motoring pressure at the crank angle measured by the in-cylinder pressure in the first step; Includes; said control unit by integrating the difference between the pressure at a pre-set interval calculated in the second step a third step of calculating a mean effective pressure shown. With the illustrated mean effective pressure calculation method and shown mean effective pressure calculating device according to the present invention, even if not using a separate torque sensor using the cylinder internal pressure it is possible to calculate the mean effective pressure shown the illustrated mean effective pressure it is possible to reduce the cost of calculation, to significantly reduce the amount of calculation for the number of data shown mean effective pressure can be calculated in real time by calculating the mean effective pressure shown it is possible that real-time engine control has an advantage. ;