SIMILE OF INDICATORS OF WORK OF VARIOUS SPEED REGULATORS ON AUTOMOBILE DIESEL

Abstract

The purpose of the research is to compare the quality indicators of the speed regulation of an automobile diesel with an all-mode mechanical regulator of direct action and an all-mode microprocessor regulator of indirect action on steady and transient regimes. Motor comparative researches were carried out on the same 4-cylinder automobile diesel with turbocharging (cylinder diameter 120 мм, stroke 140 мм). The object of experimental research is an automatic serial mechanical and microprocessor-based automotive diesel engine control systems developed by the authors. The results of digital records allows to visually assess the quality indicators of the speed regulation and adjustment of speed regulators. The results of the comparative analysis show the satisfactory operation of the developed all-mode microprocessor controller in various steady-state and dynamic modes and confirm the necessity of tuning the PID parameters depending on the operational mode of operation of the diesel engine. It is established that the stability of maintaining the rotational speed of the developed all-mode microprocessor regulator at different steady regimes ща speeds does not exceed 5 %. The values of the casting speed and the duration of the transient processes are no worse than using a serial mechanical regulator.