idle control valve

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Introduction to idle speed control valve

The location of the idle speed control valve: above the air vent next to the throttle valve.The English name of the idle speed control valve: Auxilliary Air Regulator.Ignition is judged by the idle speed controller. When the engine speed is not higher than 750RPM, the idle speed control valve is activated immediately to increase the engine speed. When the engine speed exceeds 1050RPM, the operation is stopped immediately. In vehicles with an air-conditioning system, the idle speed control valve is also called the idle speed increase valve. When the air-conditioning compressor starts, the engine will generate load, which will reduce the idle speed of the engine, and at the same time the idle speed control valve will run together with it, so as to maintain the stability of the idle speed.

idle control valve

The operation of the idle speed control valveprinciple:

The idle speed control valve is powered by the ignition switch (electric energy). When the ignition switch is turned to the ON position, the idle speed control valve is energized, and the computer of the engine controls the circuit of the idle speed control valve to ground. When a situation occurs and the operating parameters of the engine start to deviate from the normal value, the idle speed control valve is called immediately to adjust the idle speed. Idle speed is adjusted by controlling the amount of air bypassing the throttle body. After the engine is started, the idle speed control valve is opened for a period of time to increase the intake air, which increases the engine idle speed by about 150r/min-300r/min. When the engine coolant temperature is low, the idle speed control valve opens to obtain a proper fast idle speed. The engine computer controls the position of the plunger of the idle speed control valve by changing the strength of the signal sent to the idle speed control valve according to different coolant temperatures.
The stepper motor type idle speed control valve is an idle speed control device that is widely used in the world. It is used to open the bypass air channel of the automobile EFI system, so as to adjust the bypass air volume and make the engine speed reach the required target value. Structural principle: The rotor is composed of permanent magnets, the stator is composed of excitation coils, and the feed screw and valves are used to convert rotary motion into linear motion. It uses the step signal supplied by the system to carry out conversion control, so that the rotor can rotate forward or reverse, so that the valve core (screw) can perform telescopic movement to achieve the purpose of adjusting the cross section of the bypass air passage, thereby stabilizing the idle speed, and achieve the desired idle speed.
idle control valveDetection:

The detection of the idle speed control valve is divided into three steps:
1. Connect the intake duct from the throttleremove.

2. Start the engine.
3. Put your finger on the hole at the lower part of the throttle. When the engine is cooling, the water temperature is low, so you can sense the flow of airflow. If you can’t feel the airflow, you need to replace the idle speed control valve and check again.
The idle speed control valve is comprehensively introduced to you through the introduction of the idle speed control valve, the working principle of the idle speed control valve, and the detection of the idle speed control valve. I hope that after reading it, you can have a comprehensive understanding of the idle speed control valve.

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