The principle and function of the throttle valve by Asiautos Auto Parts( vehicles Aftermarket Parts Expert)

The size of the throttle valve opening

The air coming in from the throttle valve determines the size of the throttle valve opening through the vehicle's starting and driving speed, and mixes with the engine oil in the engine to form a combustible mixed gas.

Intake volume

The throttle valve intake of the oil-powered vehicle is completed by stepping on the accelerator pedal and pulling the brake lever. The throttle valve intake of the electronic vehicle has an electronic sensor on the throttle valve, which can adjust the throttle valve opening angle according to the speed required by the vehicle, thereby controlling the size of the intake volume. The larger the throttle valve intake volume, the greater the amount of oil sprayed, the stronger the combustion ability, and the combustion force can drive the engine piston to accelerate, and the engine speed will increase accordingly.

Throttle carbon deposition

The throttle valve intake of the oil-powered vehicle is completed by stepping on the accelerator pedal and pulling the brake lever. The throttle valve intake of the electronic vehicle has an electronic sensor on the throttle valve, which can adjust the throttle valve opening angle according to the speed required by the vehicle, thereby controlling the size of the intake volume. The larger the throttle intake, the greater the amount of oil sprayed, the stronger the combustion ability, the combustion force can drive the engine piston to accelerate, and the engine speed will increase accordingly.

Disadvantages of carbon deposits on the throttle

After the throttle is carbonized, the throttle opening will be reduced, causing the mixed gas ratio in the engine cylinder to be unbalanced, causing engine vibration and increased fuel consumption. If there is too much carbon deposit, the flexibility of the throttle opening and closing will be weakened, which will make it easier for the oil to burn incompletely, causing the vehicle power to drop, the idle speed to be unstable, and even the engine will stall at idle, and the acceleration will not be smooth.

Under what circumstances do you need to clean the throttle?

1. The throttle is a component that controls the amount of air intake in the engine. When you step on the accelerator, the throttle opening size is controlled by the throttle cable or the throttle position sensor signal to change the engine speed.
2. For the throttle controlled by the cable, an idle valve will be installed on or near the throttle to control the idle air intake. This should be cleaned together when cleaning the throttle.
3. A simple way to judge whether the throttle is dirty: When the gearbox is in neutral or P gear, lightly step on the accelerator, then quickly release the accelerator, and observe that the tachometer pointer will pause (buffer) when it reaches the idle speed, and then stabilize to the idle position. If the pointer continues to fall, accompanied by engine shaking, it means that the throttle should be cleaned. If the vehicle glides and stalls, or the engine is unstable, the throttle should also be cleaned.
4. It is not recommended to clean the throttle frequently if there is no fault phenomenon. The surface of the throttle is relatively smooth, and scratches will appear if it is cleaned frequently. In addition, the slight corrosion of chemical cleaning agents will cause the surface to be uneven, which is more likely to adhere to sediments.
5. The throttle generally has carbon deposits when the vehicle travels about 20,000 kilometers. If the vehicle fails to start, stalls at idle, or the engine lights up red, you should consider cleaning the throttle.
   

The throttle of a vehicle is a control valve, similar to the mouth of an engine. Air enters the engine pipe through the throttle mouth. The air entering the pipe mixes with the engine oil to become a combustible mixed gas. After the gas burns, the engine will generate power, so that our beloved car can start and drive on the road.