NOx produces only at very high cylinder temperature and pressure.ĮGR recirculates the exhaust gas in a particular percentage of about 6–10 again into the intake manifold. The main function of the Exhaust Gas Recirculation (EGR) system is to reduce NOx emissions. Function of the Exhaust Gas Recirculation System To overcome the problem, automakers have come up with an EGR intercooler that cools the exhaust gas and increases the oxygen density in the exhaust gas, which results in better combustion and much less emission, even better than the traditional air injection system. The disadvantage is that engines with an EGR system have overheating problems due to the heat of the exhaust gases. These hydrocarbons produce due to unburnt fuel. Therefore, less CH3 (hydrocarbons) are generated in the exhaust stream. Therefore, the unburned fuel in the exhaust gas recirculation system mixes with the fresh raw material (fuel-air mixture) and ignites at the end of the compression stroke. When the product of combustion leaves the cylinder through the exhaust manifold, then some part of the exhaust gases in the engine is recirculated through the intake manifold. The exhaust gas recirculation system works in the following way: Because the exhaust gases are inert, it is also useful for starting a cold engine. The EGR valve uses to control the emission of NOx. The composition of the exhaust gases has higher specific heat than the mixture in the engine cylinder. In this way, the EGR valve controls the emission of exhaust gases. Both factors inhibit the formation of NOx. During this process, it reduces the temperature of the exhaust gases and the oxygen level in the cylinder of the engine. The EGR system returns the engine exhaust gases back to the engine cylinder. The Exhaust gas recirculation system has the ability to protect the environment and human life from the engines‘ harmful gases. It is one of the most important parts of a vehicle engine. To reduce and control NOx emission, manufacturers introduce the “EGR (Exhaust Gas Recirculation)” technique in the various vehicles’ engines. Nitrogen oxide (NOx) produces inside the engine cylinder due to the high compression ratio and the high temperature of the engine cylinder. NOx emission pollutants to the environment and these gases birth different dangerous diseases. The EGR system is most commonly used in diesel engines because these engines release very high levels of nitrogen oxides which are injurious to the human body and environment. Exhaust gas recirculation (EGR) is an emission control technology used in modern IC engines ( gasoline/petrol engines and diesel engines) to reduce NOx emission. What is the function of the EGR system? What is Exhaust Gas Recirculation System?ĮGR stands for Exhaust Gas Recirculation.What is the Exhaust gas recirculation system performance?.Advantages of Exhaust Gas Recirculation.Does EGR help to reduce knocking in both Diesel and Gasoline Engines?.Can an EGR increase the speed of a car?.How does EGR blanking affect the car’s performance?.How to replace a faulty Exhaust Gas Recirculation System?.Function of the Exhaust Gas Recirculation System.What is Exhaust Gas Recirculation System?.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |