A Study on in-cylinder pressure analysis in Diesel Engines

Abstract

In the future, it will be necessary to measure in-cylinder pressure using a pressure sensor installed in the engine cylinder, which is useful for control. In this study, we developed a heat release rate calculation program for diesel engines; and the accuracy was verified. Specifically, a two-zone model, which includes the fuel zone and the surrounding gas zone was adopted. The calculations were performed based on the burned mass fraction. Furthermore, in order to improve the calculation speed, the influence on the calculation results by the time resolution was investigated.