Damage status of exhaust gas recirculation valve of Dongfanghong tractor

EGR valve is the valve of exhaust gas recirculation system. If the EGR valve is broken, there will be phenomena such as unstable idle speed or even flameout, flashing fault lights, annual emission failure, engine oil burning and blue smoke from exhaust gas.

EGR valve is a mechatronics product installed on diesel engine, which is used to control the amount of exhaust gas recirculation fed back to the intake system. It is usually located on the right side of the intake manifold, near the throttle body, and connected to a short metal pipe leading to the exhaust manifold.

Its function is to control the amount of exhaust gas entering the intake manifold and make a certain amount of exhaust gas flow into the intake manifold for recycling. EGR valve is a very important and key component in exhaust gas recirculation device.

Extended data

The EGR valve is damaged due to the following reasons:

(1) The quality problem of the exhaust gas recirculation system itself;

(2) improper maintenance;

(3) the quality of oil (fuel);

(4) The waste gas valve is aging.

(5) Adding low-purity gasoline or fuel treasure by mistake may cause sudden damage to the EGR valve. The waste valve works at high temperature of the engine. Over time, they will age, as will the cover gasket and baffle of the valve chamber.