How often is the throttle cleaned?

About "How often is the throttle cleaned?" Introduce the following related contents:

The throttle is cleaned every 20,000 kilometers. Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, which will be successfully formed after combustion. It is connected to the air cleaner and to the engine block. It is called the throat of an automobile engine and is one of the most important components of the engine system. There are two kinds of throttles: traditional cable throttle and electronic throttle. The traditional engine throttle control mechanism works by pulling a cable or pull rod. One end of the cable or pull rod is connected with the accelerator pedal, and the other end is connected with the accelerator 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.