The function of the exhaust valve:
The function of the exhaust valve is to control the amount of air entering the engine, thereby controlling the combustion efficiency of the engine. It controls the combustion process of the engine by regulating the air flow in the intake duct, which affects the engine's performance and fuel economy.
Working principle: The working principle of the wastegate valve is to adjust the intake air volume by sensing the intake pressure and temperature of the engine. When the engine needs more air, the wastegate opens, allowing more air to enter the engine; When the engine needs to reduce the amount of air, the wastegate closes, reducing the amount of air entering the engine.
The working principle of the exhaust valve can also be explained by its structure. The exhaust valve usually consists of a diaphragm and a spring. One side of the diaphragm is acted upon by the inlet pressure, and the other side is acted upon by the spring. When the inlet pressure acts on the diaphragm, it compresses the spring and opens the wastegate; When the inlet pressure decreases, the spring returns to its original shape and closes the wastevalve.
By regulating the amount of air intake, the wastegate can control the power and fuel economy of the engine. If the wastegate fails, it can lead to problems such as reduced engine performance, poor fuel economy, and increased emissions. Therefore, it is very important to regularly inspect and maintain the exhaust valve.