1 1 where is the corolla waste gas valve?

The exhaust gas recirculation valve is located in the branch pipe of the automobile exhaust pipe and belongs to the exhaust gas recirculation system. The main purpose is to reduce nitrogen oxides (nitrogen oxides) in exhaust gas and improve fuel economy under part load. In order to provide the same amount of oxygen, the fuel engine needs to increase the throttle at part load compared with the non-EGR in the cylinder. Therefore, the oil absorption loss during inhalation is low, and the fuel economy will be improved.