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Smart - EGR Solution | EGR Service

EGR - Exhaust Gas Recirculation

WHAT IS EGR?

In internal combustion engine, exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction method used in petrol/gasoline and diesel engine. EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. This weakens the O2 in the incoming air stream and provides gases inert to combustion to act as absorbents of combustion heat to reduce peak in-cylinder temperatures. NOx is produced in a narrow band of high cylinder temperatures and pressures. NOx forms mainly when a mixture of nitrogen and oxygen is subjected to high temperature, the lower combustion chamber temperatures produced by EGR reduces the amount of NOx the combustion generates (though at some loss of engine efficiency). In current diesel engine, the EGR gas is cooled with a heat exchanger to allow the introduction of a greater mass of recirculated gas.

Smart EGR SOLUTION

Here at Quantum Tuning have a very progressive solution for Smart EGR. The valves can become stopped with carbon deposits, causing them to fail or stick, thereby causing error codes and the vehicle not to run correctly. Our software solution to restrict the EGR valve is a simple and effective method of improving the efficiency of your engine.



what is egr
Safer Overtaking

ADVANTAGES OF EGR

  • Reduced NOx
  • Potential reduction of throttling losses on spark ignition engines at part load
  • Improved engine life through reduced cylinder temperatures (particularly exhaust valve life)
  • Fuel Economy Improvements

Removal of the Smart EGR system by Blanking off the exhaust input and reprogramming of the engine management ECU results in dropped engine temperatures, improved throttle response and economy and also can increase engine life by reducing oil contamination and carbon deposits.


How egr works
Smoother Power Delivery

WORKING OF EGR

To recirculate exhaust back into the intake manifold, a small calibrated "leak" or passageway is created between the intake and exhaust manifolds. Intake vacuum in the intake manifold sucks exhaust back into the engine. But the amount of recirculation has to be closely controlled otherwise it can have the same effect on idle quality, engine performance and drivability as a huge vacuum leak.

Older EGR systems use a vacuum regulated EGR valve while newer vehicles tend to have an electronic EGR valve to control exhaust gas recirculation. When the engine is idling, the EGR valve is closed and there is no EGR flow into the manifold.

The EGR valve remains closed until the engine is warm and is operating under load. As the load increases and combustion temperatures start to rise, the EGR valve opens and starts to leak exhaust back into the intake manifold. This has a quenching effect that lowers combustion temperatures and reduces the formation of NOx.

If the EGR system is rendered inoperative because it was disconnected or tampered with, the cooling effect that was formerly provided by the EGR system will be lost. Without EGR, the engine will often knock and ping (detonate) when accelerating or lugging the engine. This can cause engine damage over time.