engleski

Quasi-dimensional numerical model of fuel evaporation and combustion in diesel engine

This paper describes mathematical quasi- dimensional model of liquid fuel evaporation and combustion for direct injection diesel engines. Yoshizaki combustion model is also presented and modified because the original combustion model was developed for the gasoline engine. Quasi- dimensional numerical models have been developed as a compromise between zero-dimensional and CFD models for internal combustion engine simulations because of the short processing time and highly accurate results. The crucial part of developed computer software is numerical model for simulation of fuel evaporation and combustion, which are especially complex in direct injection diesel engine simulations. The numerical model consists of many experimental coefficients that have a major influence on chemical reaction dynamics during fuel evaporation and combustion in diesel engine cylinder. Simulation results are validated with experimental measurements on direct injection diesel engine. Such numerical simulation provides insight in many details of fuel evaporation and combustion process what is particularly important because these details cannot be obtained by experimental measurements.

fuel evaporation ; combustion ; diesel engine ; quasi-dimensional numerical model

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