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Anonymous users2024-02-07When the engine idle load increases, the ECU controls the idle control valve to increase the air intake, so that the idle speed increases, and prevents the engine from unstable or stalling; When the engine idle load is reduced, the ECU controls the idle control valve to reduce the air intake, so that the idle speed is reduced to avoid the idle speed being too high.
The idle control valve is installed on the air hole of the throttle bypass, and the idle control valve is activated in time when the engine speed is lower than 750rpm according to the ignition signal, so as to increase the engine speed, and stop the operation when the engine speed exceeds 1050rpm. In vehicles equipped with air conditioning systems, this control valve is also called the idle speed increase valve, and after the air conditioning compressor acts, the engine load is generated, so that the engine idle speed is reduced, and the idle control valve acts accordingly to maintain the stability of the idle speed.
When the engine's operating parameters deviate from the normal value, the idle control valve is used to adjust the idle speed. The idle speed is adjusted by controlling the amount of air in the bypass throttle body. After the engine starts, the idle control valve is opened for a period of time to increase the air intake, which increases the engine idle speed by about 150r-300r.
When the engine coolant temperature is low, the idle control valve opens to get the right amount of fast idle. The engine computer controls the position of the idle control valve plunger by changing the signal strength transmitted to the idle control valve according to different coolant temperatures.
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Anonymous users2024-02-06The idle control valve is located on the throttle body, and when idling, the throttle is almost completely closed. Types of idle control valves include mechanical, solenoid, rotary and stepper motor types. Because they differ in principle and structure, there is a wide variety.
When the engine idle load increases, the ECU will control the idle control valve to increase the air intake, thereby increasing the idle speed and preventing the engine from being unstable or stalling; When the engine idle load is reduced, the ECU controls the idle control valve to reduce the amount of air intake, thereby reducing the idle speed and preventing the idle speed from being too high. The idle control valve is mounted on the throttle bypass breather. According to the ignition signal, the idle control valve will make the idle control valve act in time when the engine speed is lower than 750 rpm, so as to increase the engine speed and stop when the engine speed exceeds 1050 rpm.
In vehicles equipped with air conditioning systems, this control valve is also known as an idle accelerator valve. When the air conditioner compressor acts, the engine load is generated, the engine idle speed is reduced, and the idle control valve will act accordingly to keep the idle speed stable. When the operating parameters of the engine deviate from the normal value, the idle control valve is used to adjust the idle speed, which is adjusted by controlling the amount of air that is sensitive to air failure bypassing the throttle body.
After the engine starts, the idle control valve will be opened for a period of time, and the air intake will increase, so that the engine idle speed will increase by about 150 rpm to 300 rpm. When the engine coolant temperature is low, the idle control valve opens to get a suitable fast idle. Depending on the coolant temperature, the computer controls the position of the idle control valve plunger by changing the signal strength transmitted to the idle control valve.
The solenoid valve idle control valve is actually a solenoid coil. The ECU controls the current of the coil and the opening of the control valve by the duty cycle. The rotary valve type idle control valve is a type of motor-driven idle control valve.
The most widely used stepper motor idle control valve is to adjust the idle speed by controlling the amount of air that bypasses the throttle to achieve the ideal idle value. In addition, there is a paraffin idle control valve, which mainly uses the principle of paraffin, which is opened at low temperature to improve the idle speed of the engine, and with the increase of temperature, the valve core is lowered to stabilize the idle speed. The idle shield control valve is also equipped with an idle adjustment screw to adjust the idle speed.
The idle control valve is installed on the air hole of the throttle bypass, and the idle control valve is activated in time when the engine speed is lower than 750 rpm according to the ignition signal, so as to increase the engine speed, and stop the action when the engine speed exceeds 1050 rpm. In vehicles equipped with air conditioning systems, this control valve is also called the idle speed increase valve, and after the air conditioning compressor acts, the engine load is generated, so that the engine idle speed is reduced, and the idle control valve acts accordingly to maintain the stability of the idle speed.
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