Application of Quasi -Dimensional Turbulent Combustion Model in Combustion Cycle Analysis of Gasoline Engine

In order to accurately calculate and predict the change of turbulence parameters in gasoline engine cylinder combustion cyclic variability, a quasi-dimensional turbulent combustion model is established and a parameter λ/6µ_1 of cyclic variation at the initial stage of quantitative combustion is modified in this paper. Finally, the quasi-dimensional turbulent combustion model and the modified parameter λ/6µ_1 are used to analyze and predict the effect of turbulence on combustion cyclic variability. Experimental results show that the quasi-dimensional turbulent combustion model can predict the initial small scale turbulence effect of combustion cyclic variability. The comparison of experimental standard deviation and predictive standard deviation can be used as a powerful tool to identify and analyze the importance of different factors combustion cyclic variability. It can provide a reference for the experimental study of this problem and lay a foundation for the establishment of combustion cyclic variability model in the future.