INFLUENCE OF INTAKE PORT SHAPE ON EFFECTIVE AND ECOLOGICAL PARAMETERS OF MIDDLE-SPEED DIESEL ENGINE
The paper presents the numerical analysis of swirl motion generation inside the intake system of a middle-speed diesel engine. It also analyzes the processes of both mixture formation and air-fuel mixture combustion in the combustion chamber. The mathematical model is based on the three-dimensional non-stationary equations of momentum, energy, motion, mass transfer, and consistency of reacting substances in the Reynolds form with the addition of k-ζ-f turbulence model and the Coherent Flame Model (CFM), which are used for estimating the combustion chemical reaction rate. The authors solved the problem as follows: at first, an intake port shape with a higher swirl number was developed, and then effective and ecological parameters of the diesel engine with a modified shape of the intake ports in the cylinder head were calculated