Does EGR damage turbo?
The EGR valve is likely to stick and become coked up on some applications. BTN Turbo warns that this can have a significant effect on turbocharger performance. A faulty EGR valve can result in excessive carbon/soot at the turbine end, causing the VNT mechanism to stick.
Why do exhaust gases clog up the EGR valve?
gases would reduce power output and create a boost leak. Because exhaust gases are pumped into the engine this valve is very likely to clog up and stick and become coked up on some applications and start to malfunction intermittently and then permanently.
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:
Which is the first car with a low pressure EGR system?
The first passenger car automotive application with low pressure EGR system was marketed on the VW Jetta with a 2.0 liter TDI engine, compliant with Tier 2 Bin 5 emission limits for the US market (end of 2008). Image: Low pressure Exhaust Gas Recirculation (EGR) system
How does exhaust gas recirculation ( EGR ) technology work?
In a nutshell, D-EGR technology delivers cooled recirculated exhaust gas and reformed fuel in the same package. The dedicated EGR concept, which uses individual cylinders dedicated to EGR production, was tested on a 2.4 litre naturally aspirated engine at both low and high load conditions.
What causes excessive flow in an EGR valve?
Bad Gasket Another common cause of excessive EGR flow has to do with the gasket used to create an air-tight seal between the EGR valve and its mounting surface. Although EGR gaskets consist of heavy-duty and heat-resistant materials, they may develop cracks and other problems as time goes on.
What causes the exhaust gas recirculation to malfunction?
The exhaust gas recirculation (EGR) recirculates small amounts of exhaust back into the combustion chambers of the engine in order to decrease the combustion temperature, thereby reducing the formation of smog-producing nitrogen oxides. EGR valves can malfunction by becoming stuck open or closed due to carbon buildup.
What happens if the gaskets on the EGR cooler fail?
If the EGR cooler gaskets fail, or the cooler gets damaged for any reason, it can cause an exhaust leak to develop. An exhaust leak may be heard as an audible hissing or tapping sound coming from the front of the vehicle. This will reduce the efficiency of the EGR system, and negatively affect engine performance. 3. Check Engine Light comes on
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.