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Anonymous users2024-02-07The 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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Anonymous users2024-02-06The idle control valve is powered by the ignition switch, as long as the ignition switch is turned to the ON position, the idle control valve is energized, and the engine computer controls its circuit. When the engine's operating parameters deviate from the normal value, the valve is used to adjust the idle speed. It is used to bypass the opening of the air passage of the automotive EFI system, so as to adjust the bypass air volume so that the engine speed reaches the required target value.
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.
The stepper motor idle control valve is one of the most widely used idle control devices in the world. It is used to bypass the opening of the air passage of the automotive EFI system, so as to adjust the bypass air volume so that the engine speed reaches the required target value. Structural principle:
It consists of a rotor made of a permanent magnet, a stator made of an excitation coil, and a feed screw and valve that converts rotational motion into linear motion. It uses the stepping signal supplied by the system to carry out conversion control, so that the rotor can rotate forward or backward, so that the valve core (screw rod) can carry out telescopic movement to achieve the purpose of adjusting the bypass air duct cross-section, so as to stabilize the idle speed and achieve the ideal idle speed.
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Anonymous users2024-02-051. The idle control valve is installed on the air hole next to the throttle, and the idle controller will make the idle control valve act 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 action after the engine speed exceeds 1050rpm;
2. In the car equipped with the air conditioning system, this control valve is called the idle speed valve, and after the action of the air conditioning compressor, 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;
3. Testing steps: 1. Remove the intake tube from the throttle body. 2. Start the engine.
3. Put your finger on the orifice at the lower part of the throttle body, when the engine is in a cold state (the engine cooling water temperature is lower than the air flow should be felt, if the air flow can not be felt, the idle control valve should be replaced and re-checked).
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Anonymous users2024-02-04The 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.
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Anonymous users2024-02-03The working principle of the idle control valve: 1. The idle control valve is powered by the ignition switch, as long as the ignition switch is turned back to the ON position, the idle control valve is energized, and the engine computer controls its circuit; 2. When the working parameters of the engine deviate from the normal value, Sun Du uses the valve to adjust the idle speed. The idle speed is adjusted by controlling the amount of air in the bypass throttle body.
After the engine starter, the idle control valve is opened for a period of time, and the air intake increases, so that the engine idle speed is increased by about 150r min-300r min; 3. When the engine coolant temperature is low, the idle control valve is opened to obtain a proper fast idle speed. 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.
Antelope's engine, the earliest is also imported parts assembled in the Jiangling factory, model JL474Q1, in fact, it should be called Suzuki G13B, is a front-wheel drive gearbox for cars, when the Antelope was installed, the basic type of Antelope was sold, luxurious, the Antelope machine at that time was absolutely first-class, there was no such noise as the Antelope now, there was no idle jitter, fuel consumption was lower, and the quality and durability were better. Later, Suzuki and Chang'an discord, their own in Chang'an Suzuki company to build an engine production line, the production of the current antelope and swift engine, after the localization rate increased, the quality went downhill, but compared to the Jiangling plant, the small Japan control is much stricter, the EFI system still uses Japan DENSO, the swift is like the Chang'an Star to remove the distributor and replace it with a double ignition coil, the model is JL474Q5, which is the little Japan used to fool consumers, in fact, the engine of the antelope and the cylinder block of the Chang'an Star, The cylinder head and other structures are the same, single overhead camshaft (SOHC) 16 valves, it is belt driven, but it can not be universal, the displacement is also different Antelope 1301, Changan 1310, due to the difference in the design of the intake system, the power torque is different, the Antelope is slightly higher at 63kw, 110Nm, Changan 60kw, 100Nm, the actual use of power is still enough, the speed is pulled up after the stamina is very strong, the idle condition is relatively, there are obvious noises of "click", The shaking of the Antelope steering wheel is more serious (the Swift is said to not shake after improvement), the noise control is better than the Antelope Chang'an, the high-speed 130 or more two machines have the low-frequency jitter and noise of "Huohuo", the small problems are much less than Chang'an, and the overhaul mileage is also much better than the Antelope, but the 500,000 kilometers of the Antelope taxis boasted on the Internet are not overhauled, which are all early imported carburetor 472 engines, Suzuki G10 series, not the current Antelope Swift engine, and the current machine will reach 500,000 kilometers? Four words: >>>More
Common points of failure are as follows:
1.Excessive fouling of the throttle and intake. >>>More
There are several reasons for engine shake:
1. The engine has serious carbon deposits, and the most common car with serious shake is that the fuel injector throttle valve is too dirty or too much carbon; >>>More
Hello, check the spark plug and the ignition coil as well. >>>More
1. Check whether the ignition system is faulty. Generally, it is caused by the ignition coil or the aging of the spark plug, and the damaged ignition coil or spark plug can be replaced. The inspection of the ignition coil needs to use the computer to read the specific fault code, if the corresponding cylinder has a misfire, it is generally a problem with the ignition coil. >>>More