What is the function of the EGR valve in a car engine?

[StSophie]

The function of the EGR valve in a car engine is to control the amount of exhaust gas entering the intake manifold, allowing a certain amount of exhaust gas to flow into the intake manifold for recirculation. The EGR valve is a very important and critical component in the exhaust gas recirculation system, and it can be divided into mechanical and electronic control types. A car engine is a machine that converts other forms of energy into mechanical energy. Its maintenance methods include: 1. Using high-quality engine oil; 2. Using qualified coolant; 3. Regularly cleaning the radiator scale; 4. Regularly removing carbon deposits from the car; 5. Timely replacement of the car's three filters; 6. Maintaining a reasonable engine speed.