Case Study of Exhaust Gas Recirculation on CI Engines and It's Environmental Effects using Biodiesel as a Fuel

One of the largest source of pollution in environment is automobile exhaust. Where engine emitted nitrogen oxides (NOx) which are dangerous for human life, because while increasing percentage of NOx where large increases in smoke density was observed. Now the world has faced negative effect from the fossil fuel like global warming, acid rain and so many others. Where biodiesel was introduced with increasing role in fulfilling the world’s energy requirement. With the increase in consumption of biodiesel, its impact on environment has raised a discussion around the world. Madhua oil is used to prepare the biodiesel in this present work. Contains low aromatics and sulphur and hence, is environment friendly. The addition of biodiesel fuel increases formaldehyde emission. Various methods are used to reduce the NOx emission. In the present work Exhaust gas recirculation (EGR) concept is used the diesel engine with B20 biodiesel as fuel. Experiments are conducted in a single-cylinder, four-stroke, water-cooled, direct-injection diesel engine coupled to an Eddy current Dynamometer with EGR and without EGR at various level (10% and 20%). The aim of the paper to shows results of biodiesel combustion emission on the environment with use of EGR concept where NOx emission is reduced using EGR for diesel and bio diesel.