Research on Control Method of Heat Release Rate for High Power-Density Marine Diesel Engine

High power-density marine diesel engines are widely used in ships, and the combustion optimization is of great importance. However, to achieve an optimized combustion process, current control method is based on existing engine and established boundary conditions, few researches are about the engine development stage. In this paper, a theoretical control method of heat release rate is proposed by establishing a quantitative relationship between the main parameters of heat release rate and the controllable parameters of combustion system. In this way, the relative parameters of combustion system are designed to control the combustion to achieve the desired combustion. Finally, the control method is verified by CFD simulation and experiment to has the ability of capturing the main characteristics and the overall shape of the target heat release rate, within an error of 2%, and predicting the fuel consumption within an error of 0.4%.