English standard translation name: (Auxiliary Air Regulator) idle speed control valve is installed on the throttle bypass air hole, and the idle speed controller, based on the ignition signal, makes the idle speed control valve act in time when the engine speed is lower than 750 RPM to increase the engine speed, and stops acting when the engine speed exceeds 1050 RPM.For vehicles equipped with air conditioning system, this control valve is also called the idle speed increasing valve. After the action of the air conditioning compressor, the engine load will be generated to reduce the engine idle speed, and the idle speed control valve will act accordingly to maintain the stability of idle speed.
3. Place your finger onThrottle Body On the lower orifice, when the engine is cold (the air flow should be felt when the engine cooling water temperature is lower than, if the air flow cannot be felt, the idle speed control valve should be replaced and rechecked)
Control principle
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The idle speed control valve is powered by the ignition switch. As long as the ignition switch is turned to the ON position, the idle speed control valve is energized, and the engine computer controls its circuit grounding.When the operating parameters of the engine deviate from the normal values, the valve is used to adjust the idle speed.The 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 air intakeEngine idlingThe rotating speed increases by about 150r/min-300r/min.WhenEngine coolantWhen the temperature is low, the idle speed control valve opens to obtain proper fast idle speed.The engine computer controls the position of the idle control valve plunger by changing the signal strength sent to the idle control valve according to different coolant temperatures.
Stepper motorType A idle speed control valve is the most widely used idle speed control device in the world.It is used for the opening of the bypass air channel of the automobile electronic injection system, so as to adjust the bypass air volume and make the engine speed reach the required target value.Structure principle: rotor composed of permanent magnet, stator composed of excitation coil, feed screw rod and valve that 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 element (screw rod) can stretch to adjust the section of the bypass air passage, so as to stabilize the idle speed and achieve the ideal idle speed.
