Function and principle of automobile throttle

The function of the throttle is to control the intake flow of the engine and the air entering the engine. It is a controllable valve that determines the working condition of the engine. After air enters the intake pipe, it is mixed with gasoline to form combustible mixture, which participates in combustion and does work. The driver controls the throttle opening by operating the accelerator pedal.

Function and principle of throttle valve;

1, throttle valves are generally divided into two categories, electromechanical throttle valves and electronic throttle valves. The electromechanical throttle valve 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.

2. Electronic throttle, the valve of which is linked with potentiometer and valve motor, and the signal is connected with the engine computer, and 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.

3. The fuel injection of carburetor is to suck the gasoline in carburetor through the negative pressure formed by the airflow in the intake pipe, and then mix it and enter the cylinder. This method is extensive and unevenly distributed, which affects emissions. The electrical signals provided by the air flow sensor and air pressure sensor near the throttle are used by the driving computer to control the fuel injector in the intake manifold according to various parameters. (Photo/Text/Photo: Li Linwei) @20 19