EGR Delete Birmingham

The EGR theory works by sending a small part of inactive gas exhaust back into a vehicle’s cylinders, hence eject negligible toxins into the environment. This reduces the heat of combustion yet the same amount of pressure is still applied to this piston while reducing the amount of excess oxygen prior to combustion. A few studies conducted on diesel engines demonstrate that the portion of nitrous oxide gas emissions is definitely reduced through the use of EGR, however concentrations of smoke density can actually increase. Thus there seem to be pluses and minuses depending on what’s important to you in your specific vehicle

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 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.