What does the EGR valve connect to?
The EGR valve is the main component of the EGR system and it’s normally closed. It connects the exhaust manifold to the intake manifold and is controlled by either a vacuum or a built-in electric step motor.
What does the EGR valve control?
Integral to the vehicle’s engine management system, the aptly named exhaust gas recirculation valve, or EGR valve for short, recirculates finely metered quantities of exhaust gas to the engine intake system for increased engine efficiency, reduced fuel consumption and lower NOx emissions.
Why is the EGR valve important in a car?
The EGR valve is very important when regulating exhaust emissions and it can cause great damages when it is not working properly. The EGR stands for Exhaust gas recirculation system which is a system that was designed to take back exhaust gas into the vehicle. It is mostly done to reduce NOx emissions and cylinder temperatures.
What’s the code for an EGR valve throw?
What code will an EGR valve throw have? The P0401 trouble code is related to your car’s exhaust gas recirculation (EGR) system, which controls an engine and reduces emissions. Suppose a computer-controlled valve gives a certain amount of gases back into your engine to be burnt with the air-fuel mixture.
Where is the EGR valve on the intake manifold?
In a high pressure EGR system, the exhaust gas is taken before the turbine and reintroduced into the intake manifold after the compressor, thus in the high pressure zone of both exhaust and intake manifolds. The EGR valve is placed on the exhaust manifold side for several reasons:
How does EGR reduce the production of NOx?
To reduce the amount of NOx pollutant emitted from your vehicle, exhaust gases need to be cooled before being emitted from your vehicle. In order to achieve this, they are introduced back into the combustion chamber via the exhaust gas recirculation (EGR) valve; this reduces the temperature and thereby inhibits the production of NOx emissions.