The working principle of the diesel engine throttle is to control the amount of engine intake, and adjust the ratio of gasoline and gas according to the computer signal, so that the gasoline can be fully burned to generate power.

There are generally two types of throttle: the carburetor throttle and the resistor throttle. The working principle of the carburetor throttle is to regulate the engine speed by taking away the gasoline, and the larger the throttle opening, the lower the speed. It has an air intake nearby, and when the throttle is open, some of the air from the small opening will flow in and take away the corresponding gasoline, which means that the more the throttle is opened, the more gasoline is taken away.

The working principle of the resistor throttle is to control the amount of engine intake according to the computer signal, and adjust the ratio of gasoline and gas to make the gasoline fully burn to generate power. The driver actually presses not the gas pedal, but "air", and the amount of air pressed into the engine is determined by the speed of the gas pedal and the gear change.