riginal good quality Exhaust gas control valve VG1560110426

The function of the exhaust gas control valve is to allow the car exhaust gas to circulate again into the cylinder for combustion, and this small amount of exhaust gas reduces the temperature in the cylinder during combustion. Because nitrogen oxides are generated under high temperature and oxygen rich conditions, it suppresses the generation of nitrogen oxides, thereby reducing the content of nitrogen oxides in the waste gas.