EGR Issues | EGR Solutions

Usually, an engine recirculates exhaust gas by piping it from the exhaust manifold to the inlet manifold. This design is called external EGR. A control valve (EGR Valve) within the circuit regulates and times the gas flow. Some engines incorporate a camshaft with a relatively large overlap during which both the intake valve and the exhaust valve are open, thus trapping exhaust gas within the cylinder by not fully expelling it during the exhaust stroke. A form of internal EGR is used in the rotary Atkinson cycle engine 

Benefits of EGR Removal?

Modern engines recirculate some of their exhaust gases back into the engine to reduce emissions. This is the main benefit of the EGR system. The downside ( EGR issues ) is that exhaust fumes containing carbon deposits are constantly being recirculated through the engine through time causing a build-up of carbon deposits in the intake manifold etc.

These deposits sometimes contribute to the failure of the EGR system itself. Replacement EGR valves can be expensive and in the case of high mileage engines the continual carbon build-up can eventually lead to total engine failure.

Removal of the EGR system by banking off the exhaust input and reprogramming of the engine management ECU ( EGR delete ) results in lowered engine temperatures, improved throttle response, and economy and also can lengthen engine life by reducing oil contamination and carbon deposits.

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