How does EGR cool down intake?
10.6. Cooling the EGR prior to mixing with the intake air lowers the combustion temperature by removing the “preheat” potential while at the same time increasing the inlet air charge and, hence, the oxygen-to-fuel ratio.
Is EGR bad for gas engines?
Using cooled clean EGR, gasoline combustion temperature is reduced significantly, which reduces engine knocking, engine-out soot particulates, engine heat losses and fuel consumption, all at the same time.
What does an EGR delete do on a gas engine?
An EGR delete kit is an aftermarket performance part that removes the EGR valve and prevents exhaust from being redirected back to the engine. Ultimately, this allows your vehicle to function as if it never had an EGR valve. Soot deposited within the engine stresses the system and causes parts to wear down faster.
How is exhaust gas circulated in an EGR system?
Most EGR systems have a by-pass valve integrated with the EGR cooler. When the engine is cold, the exhaust gas is circulated directly into the engine.
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 to know if your EGR valve is stuck or malfunctioning?
How to Know If Your EGR Valve Is Stuck or Malfunctioning. The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine.
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.
Most EGR systems have a by-pass valve integrated with the EGR cooler. When the engine is cold, the exhaust gas is circulated directly into the engine.
How to Know If Your EGR Valve Is Stuck or Malfunctioning. The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine.
What does the EGR cooler do on a diesel engine?
The EGR cooler is the portion of this system used to reduce the temperature of the exhaust gas before being recirculated into the engine intake air. Why do EGR Cooler Fail?
Which is more efficient IEGR or exhaust gas recirculation?
EGR (external) is the main technology used by vehicle manufacturers for the reduction of NOx emissions on diesel engines. It is more efficient than iEGR mainly because the exhaust gases can be cooled before reentering the cylinders, the amount of exhaust gases recirculated is higher and the flow is better controlled.