What are the effects of blocking the EGR in a diesel vehicle?

1 Answers
StellaMarie
07/29/25 1:11pm
EGR long open state, at this time the vehicle will exhibit black smoke emission, lack of acceleration power, and increased fuel consumption. In this case, it is necessary to replace or clean the EGR valve. Below are specific details about the EGR valve: 1. Overview: The EGR valve is a mechatronic product installed on diesel engines to control the amount of exhaust gas recirculated back into the intake system. It is typically located on the right side of the intake manifold, near the throttle body, and is connected to the exhaust manifold via a short metal pipe. Its function is to regulate 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. 2. Classification: EGR valves are divided into mechanical and electronic control types. 3. Working principle: The EGR valve guides the exhaust gas from engine combustion into the intake manifold to participate in combustion, thereby reducing the combustion chamber temperature, improving engine efficiency, enhancing the combustion environment, reducing engine load, effectively decreasing NOx emissions, reducing knocking, and extending the service life of various components.
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