How does a car without a throttle line control the intake of the throttle?

Throttle valves are generally divided into two categories.

Generally, one is electromechanical throttle, and the other is electronic throttle.

First, the electromechanical throttle is used to adjust the engine speed. The greater the throttle opening, the higher the engine speed (and the engine computer will feed back the driver's driving intention). There is also a bypass idle motor next to it, which is mainly used to adjust the engine load at idle speed and ensure the engine to work smoothly.

Second, the electronic throttle valve is linked with potentiometer and valve motor, and the signal is connected with the engine computer. The speed and power of the engine are adjusted by using various working parameters of the engine and gearbox to realize sensitive control of the engine power. If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.