Technique for calculating a high-precision IMEP using a low-resolution coder and an indirect integration process

摘要

A method for calculating the indexed effective mean pressure (IMEP) in an internal combustion engine using a few input data. The method uses an indirect integration approach and requires crankshaft position and cylinder pressure input data with significantly lower resolution than existing IMEP calculation methods, while providing calculated IMEP output results that are very accurate compared to values calculated by existing methods. By using a small amount of input data, the indirect integration process offers cost reduction options for a manufacturer of vehicles, engines and / or electronic control, lower costs and the consumption of less computing resources for data processing and storage.