What is the working principle of the throttle valve?

[McConnor]

The working principle of the throttle valve is to control the engine's air intake, adjusting the mixture ratio of gasoline and air based on computer signals, thereby ensuring complete combustion of gasoline to generate power. The throttle valve is a controllable valve that regulates air entry into the engine, available in two types: traditional cable-operated and electronic throttle. After entering the intake pipe, the air mixes with gasoline to form a combustible mixture, which then burns to perform work. The throttle valve is connected to the air filter at the top and the engine block at the bottom. In traditional engines, the throttle valve operating mechanism works via a cable or linkage, with one end connected to the accelerator pedal and the other to the throttle linkage plate. Electronic throttle valves primarily use throttle position sensors to control the opening angle of the throttle valve based on the engine's energy requirements, thereby regulating the amount of air intake.