Investigation of failure modes of exhaust gas recirculation (EGR) system

The exhaust gas recirculation (EGR) system is widely used heat exchanger to meet the emission standard as specified by Euro norms And BS norms. The coolant passes through the shells to cool down the exhaust gas inside the tubes. Mainly EGR system is used to control the Oxides of nitrogen (NOx) emission. The emission reduction is an important task in the development of an internal combustion engine. To limit these emissions it is essential that EGR system should work in safe mode without damage. But due to improper design and manufacturing, failure of EGR system occurs. Such failure leads to increase in Emission level, which affects the environment. Therefore, it is necessary to investigate the probable causes of EGR system failure and find out the techniques for elimination of that failure. It will involve the inspections and finite element analysis (FEA) of the EGR cooler system for detection of failure. This work deals with investigation of failure causes and to provide feasible solution to reduce that failure.