Don't be a 4S shop routine, the cold knowledge of throttle is here.
Generally, it costs several hundred yuan to clean the throttle in a 4S shop, so how often should the throttle be cleaned under normal circumstances? Or, do you need cleaning? Please look below.
First, understand how the car moves forward. Gasoline engines are powered by the timely combustion of fuel and mixture. There are three necessary conditions for the combustion of an object: combustible, combustion-supporting substance (oxygen) and ignition source. Without any of these conditions, combustion cannot be carried out. So the car is heated by gasoline (ignited by spark plug) and the inhaled air produces a combustion reaction in the cylinder, and the generated energy is transmitted to the tire for movement through the shaft.
In the engine, the operation of the accelerator pedal is transmitted to the throttle. Opening and closing operations directly affect the amount of air inhaled. When you step on the accelerator pedal, it will open and the amount of air inhaled will increase. When you don't step on the accelerator pedal, it will close. Air enters the air filter-intake hose-throttle-intake branch pipe-cylinder head-cylinder from the outside. Pedal The weight of the accelerator pedal controls the opening and closing of the accelerator, thus controlling the vehicle speed and speed.
Therefore, the engine generates and reduces power according to the intake air amount. There are two kinds of throttle: cable throttle and electronic throttle. The traditional engine throttle control mechanism works through a cable (throttle cable) or a pull rod. One end of the cable is connected with the throttle pedal, and the other end is connected with the throttle linkage plate. The electronic throttle mainly uses the throttle position sensor to control the throttle opening according to the energy required by the engine, so as to adjust the intake air. At present, the cable throttle has been gradually eliminated, and more and more advanced electronic throttles are available.
The throttle valve is the "throat" of the engine, connecting the air filter element and the engine block. Arguably, gasoline engine oil doesn't go here, which should have nothing to do with carbon deposition, but there is carbon deposition on the throttle. The main reason is that after the engine oil or gasoline vapor enters the intake system, part of it will adhere to the throttle valve, and a small part will be impurities in the air.
Throttle carbon deposition is mainly produced when the engine is idling. Because of the large air flow at high speed and the cleaning effect, oil vapor is less likely to stick to the throttle. Therefore, many old drivers told us that after the new car is 5,000 kilometers, running on the expressway can remove carbon deposits. This is the truth.
Main summary
The owner suggested that the new car bought 20,000 kilometers to clean the throttle, but how long the throttle needs to be cleaned depends on the quality of air filter, engine oil, road conditions, weather temperature, driving habits and many other aspects. Even for individuals, it is impossible to determine the time to clean the throttle with a fixed number of kilometers. Generally, when idling instability, driving, flameout and other phenomena occur during driving, it is necessary to consider whether the throttle needs to be cleaned.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.