步进电机式怠速控制装置的结构原理

Idle Speed Control Stepper Motor Principle of the Device Structure

怠速控制(ISC)是在保证发动机排放要求且运转稳定的前提下,尽量使发动机保持最低稳定转速,以降低怠速时的燃油消耗量。怠速时喷油量的控制由燃油喷射控制系统根据与空气量相匹配的原则进行增减,以达到目标空燃比。主要介绍步进电机式怠速控制装置的组成,步进电机式怠速控制阀的主要结构及步进电机式怠速控制装置的控制原理。

Idle Speed Control（ISC） in ensuring the stable operation of engine emissions requirements and under the premise of stability as far as possible maintain a minimum speed of the engine to reduce fuel consumption when idle.Idle control fuel injection quantity by the fuel injection control system to match the amount of air in accordance with the principle of change,in order to achieve the target air-fuel ratio.This paper describes the idle speed control stepper motor type composition,Stepper Motor Idle Control Valve on the main structure,Idle Speed Control Stepper Motor Control Principle of the device.