Gasoline and diesel-powered engines on the road today can use one of several different EGR valve configurations. EGR System on Engine. On older vehicle models, youā€™ll recognize the EGR valve as a round, thick metal disc about three inches in diameter, usually toward the top of the engine and on the sides. The EGR cooler is an integral part of your vehicle that ensures your engine runs efficiently, and that youā€™re doing your part and not releasing as much noxious exhaust. Typically you can expect to get about 80,000 miles out of the part, but defects and damage may cause its lifespan to be shortened. If youā€™re experiencing any of above in: Technical. An EGR valve controls and regulates a proportion of the exhaust gas into the inlet of the engine. The main reason for this is to reduce Nitrogen Oxide (NOx) levels at the combustion stage. When the air/fuel mixture is burnt in the combustion chamber the formation of Nitrogen Oxide increases as the temperature rises. How to clean an EGR valve without dismantling with a Bardahl EGR valve cleaner kit. EDIT 12/02/2015: The video uses the pack 9010 and follows the instruction EGR (exhaust gas recirculation) became part of the emissions control system in heavy-duty trucks as early as 2002. This part recycles exhaust gas through the EGR cooler and back into the engineā€™s cylinders to burn with the new fuel. The aim of the EGR is to cut your emissions by burning exhaust more thoroughly and boosting your fuel efficiency. By Christopher W. Ferrone. Photo 1: The Delta-P sensor removed for a closer look. As everyone knows, diesel engines now come with an Exhaust Gas Recirculation System (EGR) to help with pollution through the reduction of NOx. It does this first by adding exhaust gases to the air intake side of the engine to lower the combustion temperature. DOrn1y. Diesel Engine EGR Explained. Why EGR systems exist? Why do we have VGT turbos? I hope this helps you understand the emissions requirements. The exhaust gas recirculation (EGR) system helps to moderate NOX emissions produced in the combustion chamber when the engineā€™s combustion temperature is high by introducing a proportion of its exhaust gas into the intake air, thus lowering the temperature. The EGR system becomes active in diesel engines when the exhaust gas reaches 450 ĢŠC The key to exhaust heat recirculation is a device called an exhaust gas recirculation ( EGR) valve. The EGR valve opens when it encounters back pressure from the car's exhaust and channels it back into the combustion chamber. You might wonder what good this does, since the air in the chamber is mixed with gasoline to make it combustible. My understand of the egr system. It reciruates a percent of exhaust gases back into the intake system. Emissions 101. This is to reduce the pollutants that go out the pipe. On the the 6.4 and others the percentage of egr is determined by the amount needed because of the epa. Hence more egr, worse mileage. Diesel exhaust fluid is not a diesel fuel additive. DEF is filled through a smaller fill neck located next to the fuel filler, under the hood, or in the trunk, depending on the application. The

how egr works in diesel engine