直列三缸发动机电控系统怠速控制策略研究

Research on the Control Strategies of the Idling Speed Controlling for Upright 3-Cylinder Engine Electronic Control System

以自主开发的直列三缸发动机电控系统为例,研究了发动机怠速控制系统的硬件组成,探讨了怠速控制策略。Matlab/Simulink仿真表明:起动和暖机工况采用开环控制、暖机后工况采用闭环控制、对闭环控制采用模糊控制是一种有效的怠速控制方法,能使发动机转速稳定在怠速目标转速。

Taking self-developed upright 3-cylinder engine electronic control system as an example, the construction of the idling control system is described and the control strategies of idling speed controlling is studied. The simulation of Matlab/ Simulink indicates： it is valid idling control method that opened-loop control for startup operation and warm-up operation are adopted, closed-loop control for idling speed operation after warm-up operation is adopted and a fuzzy control system is designed for closed-loop control. The method can stabilize idle speed at target speed.