How Does the Throttle Valve of a Diesel Engine Work?
1 Answers
The working principle of the throttle valve in a diesel engine is to control the engine's air intake, adjusting the mixture ratio of fuel and air based on computer signals, thereby ensuring complete fuel combustion to generate power. Throttle valves are generally divided into two main types: carburetor throttle valves and electronic throttle valves. Their working principles differ. The carburetor throttle valve regulates engine speed by drawing away fuel—the larger the throttle opening, the lower the engine speed. There is an air intake passage 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 passage, carrying away the corresponding amount of fuel. In other words, the smaller the throttle opening, the more fuel is drawn away. The electronic throttle valve uses varying voltages to regulate engine speed. The throttle valve controls the engine's air intake, adjusting the mixture ratio of fuel and air based on computer signals to ensure complete fuel combustion and power generation. When a driver presses the accelerator pedal, they are not directly controlling the fuel but rather the "air," as pressing the pedal and shifting gears forces a certain amount of air into the engine.
