Everyone knows that combustion requires combustibles, ignition sources, and air. The above mentioned throttle controls the amount of air entering the car to block how much air enters the cylinder. This is done by the throttle valve, which is the yellow part of the figure below. . When you twist the throttle, the accelerator throttle cable to tighten the chuck rotation, the throttle cable wheel on a further semi pull throttle, semi-driven rotation of the throttle valve of the throttle valve rotating within the cavity, reducing the area of the barrier, so that more The air enters, in fact, we have always said that the throttle is actually controlled by the valve , but everyone is used to it, and it is harmless. Frequently Asked Questions section valve Most of the cars are riding after about 20,000 kilometers, there may be idling instability, the flames are turned off when idling, the acceleration is not smooth, or the speed is not after the loose oil, a big chance is that the throttle is dirty, every time the maintenance car is Replace the air filter, then why is the throttle dirty? Maintenance cleaning throttle Since there are so many disadvantages to the dirty throttle, it is necessary to carry out maintenance and cleaning. If it is dirty, it will be a waste. When the throttle is being maintained, many people are lazy. When the air filter is removed and fired, the carburetor cleaner is cleaned to the inner throttle valve. It is extremely not recommended to do this here, so the cleaning has great drawbacks. First: the back is not necessarily clean, dirty things and carburetor cleaning agents enter the combustion chamber in large quantities, which is not a good thing. Second: The sensor inside the throttle is relatively fragile. The carburetor cleaning agent can easily damage the sensor. It is easy to make the idle speed higher after the sensor senses the error, although the EFI system has certain adaptive functions. Third: This is easy to cause residue after cleaning, and the residual cleaning agent is more serious to the throttle corrosion.
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The role of the throttle and how it works 
Some throttles will be removed and you will find a small hole in the throttle valve, or can not be completely closed. This is a normal phenomenon. It is for the car to enter the cylinder normally under idle conditions, and the displacement of each cylinder Different, the throttle will have a multi-cylinder condition.
The throttle valve is also integrated with the throttle position sensor and the intake air temperature sensor. Most of the current cars use the EFI system, the throttle position sensor detects the throttle valve closing size, and the intake air temperature sensor detects the intake air temperature. The information is transmitted to the ECU, and the ECU calculates and controls the amount of fuel injection to mix the most suitable oil and gas mixture concentration.
The throttle is dirty and related to the riding environment. The surrounding dust is large. Although there is air filter, there will still be fine dust leakage. Of course, the poor quality air filter will aggravate the dirty condition, and the poor quality oil evaporation will be relatively large. It is also one of the reasons for the dirty, even if it is better oil, there will be some evaporation phenomenon, evaporation through the crankcase and impurity mixing, stick to the throttle. 
When cleaning the throttle, it is recommended to use a special throttle cleaner. It is also a good choice to use gasoline cleaning. After cleaning, use the air pump to dry the throttle and install it back to the engine.
The air intake system is also a vital part for motorcycles, which is equivalent to human lungs. However, many riders are often the most likely to ignore the replacement of air filters and the cleaning of throttle valves, but only replace their own cars with full synthetics. Engine oil, so the car may suffer from asthma, but if it is a disease, it becomes troublesome to become lung cancer!
About the "throttle" Are you still studying?
The throttle controls the amount of intake air of the vehicle. The larger the intake air volume, the greater the amount of fuel injected by the ECU. The stronger the energy after combustion and explosion, the faster the piston is pushed to control the engine speed. It can be called the car. "Throat", the car accelerates inflexibility, and the idle speed is unstable and unstable, all of which are determined by it. The position of the throttle is not difficult to find, it is usually installed at the back of the engine, and most of it is silver.