Emission System Solutions
What Is The Exhaust Gas Re-circulation System?
The Exhaust Gas Recirculation system is a method of reducing a harmful emission called NOx. NOx is a gas that is produced when combustion takes place using the natural air around us, due to a large proportion of the air being made up of Nitrogen.
The EGR system works by re-circulating controlled amounts of exhaust gases back into the air intake system, and the most common way of doing this is with a valve, the valve controls the flow of exhaust gases that get re-circulated back into the induction system and fully shuts off the flow of exhaust gas when it’s no longer required.
The re-introduction of exhaust gases back into the combustion does several things. When a small percentage of exhaust gas takes up space within the combustion chamber 2 things happen. With a lower amount of oxygen to combust the heat released from combustion is lower, which reduces the amount of NOx that is produced during the combustion process and reduces the overall cylinder temperature.
What Can Go Wrong With An EGR System?
The main problem with the EGR system is that it becomes clogged up with carbon/soot, and stops working correctly, which starts to hinder the combustion process. Inherently there is going to be problems when with EGR systems, quite simply because the exhaust gas of engines has small particles of carbon, which then build up with in the EGR system and air inlet system, which subsequently reduces the amount of air available for the combustion process which then creates more carbon due to the incorrect air fuel mixture. And the process gets worse until the EGR valve is no longer operating correctly and becomes stuck open and constantly allows exhaust gases to pass through even when the EGR value is commanded to be closed. The whole process results in poor performance an terrible MPG and subsequently costs you more money in fuel.
What Are The Benefits Of An EGR Solution?
An EGR solution is the closing/shutting or full removal of the Exhaust Gas Re-circulation system,
Any mechanical work done in the process of stopping the exhaust gas flow will cause engine management issues, so any work needs to be accompanied by an engine management EGR solution.
Using a blank plate can stop exhaust gas flow permanently, and changing the engine calibration we can prevent the EGR valve from operating, and remove any associated engine management trouble codes that cause the engine management light on the dash to illuminate and can put the vehicle into limp home mode. The closing of the EGR valve prevents the flow of hot exhaust gases and subsequently stops any issues caused by the EGR system.