Research of Automatic Rotational Frequency Control Systems of Automobile Diesel Engine

Abstract

The purpose of the research is to compare the quality indicators of speed control of the automobile diesel engine with all-mode mechanical and microprocessor regulators in steady state conditions and in transient. Comparative motor research conducted on the same automobile diesel engine (125 kW, 4-cylinder, 120 mm cylinder diameter and 140 mm stroke). The object of experimental research is the automatic rotational frequency control systems of crankshaft diesel engine developed by the Authors. The results of the comparative analysis show that the parameters of PID controller (proportional-integral-differential) need to adjust according to the operating modes of the diesel engine. The stability of the rotational speed was achieved, developed by the microprocessor regulator at various steady speed modes, not exceed 5%. It was found that the values of the engine speed deviation and the duration of transients as good as using a serial mechanical regulator.