Pre-Chamber Combustion Model for Pre-Chamber Gas Engine

Abstract

One of the methods to operate a gas engine with high efficiency is the use of an pre-chamber, which enables stable combustion of lean fuel mixture. Models have been developed to control the pre-chamber gas engine; however, there is room for improvement in terms of computational accuracy. Therefore, in this study, we focused on the control of pre-chamber gas engine and conducted the construction and evaluation of a combustion model from the closing timing of the intake valve in the pre-chamber to the end of combustion in the pre-chamber chamber. The results showed that the predictive accuracy of the constructed model was not enough. However, considering factors such as cooling losses at the engine walls and the inflow of gas between the pre-chamber and main-chamber, it is anticipated that the predictive accuracy can be enhanced.