How often does the accelerator of a car need to be cleaned?

There are no strict restrictions on the Pacific car network, which has a lot to do with car habits and the environment. If it is dirty, it should be washed. Phenomenologically, cleaning should be considered when the idle speed is unstable. Under normal circumstances, the 4S shop will advise the owner to clean it once every 20,000 kilometers. Of course, the situation is different for different models. It is not uncommon for some cars to have dirty gas throttles and need to be cleaned after seven or eight thousand kilometers.

The throttle actuator is a servo motor, which pushes the throttle to control the opening of the throttle; The structure and working principle of the accelerator pedal position sensor are the same as those of the accelerator pedal position sensor.

The throttle electronic control unit is usually manufactured together with the engine electronic control unit. The throttle drive motor is generally a stepping motor or a DC motor, and their control methods are also different. H-bridge circuit structure is often used to drive the stepping motor, and the control unit controls the stepping motor by controlling the number, frequency and direction of pulses.

The opening of traditional throttle valve depends entirely on the driver's operation intention. The throttle opening of the electronic throttle system is not completely determined by the position of the accelerator pedal, but by the control unit according to the total torque demand of the whole vehicle for the engine under the current driving condition. (Photo/Text/Photo: Pacific Auto Network Chen Jie 2)