How Does an Automobile Throttle Work?

[MacDante]

Throttles are generally divided into two main categories: carburetor throttles and electronic throttles. Their working principles differ, with detailed information as follows: 1. A carburetor throttle regulates engine speed by controlling the flow of gasoline. The wider the throttle opens, the lower the engine speed. There is an air intake port next to it. When the throttle angle is large, the air pressure inside the engine becomes lower than the outside air, causing some air to enter through the small port, carrying away the corresponding amount of gasoline. In other words, the smaller the throttle opening, the more gasoline is carried away. 2. An electronic throttle uses varying voltages to regulate engine speed. The throttle controls the amount of air entering the engine. Based on signals from the computer, it adjusts the mixture ratio of gasoline and air to ensure complete combustion of gasoline, thereby generating power as a control component. Every time a driver presses the accelerator pedal, they are not directly controlling the fuel but rather the "air," by pressing the pedal and shifting gears to force a certain amount of air into the engine.