Abstract
The mathematical model of the processes in the diesel engine combustion chamber under cold start conditions has been developed. The model takes into account the influence of the fuel inlet air heater on these processes and allows determining the ignition lag and the heat release rate characteristics depending on the combustion products concentration. The program class, based on the mathematical model, was developed using Modelica language, which describes the processes in the diesel engine combustion chamber and is embedded in the program for simulation of the engine as a whole. Using the developed mathematical model and program, the limit values for the combustion products concentration and the maximum compression temperature, at which the diesel engine can start under given conditions, were established. The comparison of the diesel engine parameters with a fuel and electric intake air heater at cold start modes is performed.
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