Experimental Investigation of a Diesel-Biodiesel Fuelled Compression Ignition Engine with Exhaust Gas Recirculation (EGR)
Achuthanunni V1, Baiju B2
1Achuthanunni V,  Department of Mechanical Engineering, College of Engineering Trivandrum, India.
2Dr. Baiju B,  Assoc. Prof, College of Engineering Trivandrum, India.
Manuscript received on September 18, 2014. | Revised Manuscript received on October 03, 2014. | Manuscript published on October 30, 2014. | PP: 7-10  | Volume-4 Issue-1, October 2014. | Retrieval Number:  A3410104114/2013©BEIESP

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Abstract: Biodiesel is derived from vegetable oils or animal fats through transesterification process. There are many advantages of biodiesel but it is not so popular because of high NOx emission. In order to reduce NOx emission from the engine, it is necessary to keep peak combustion temperature under control. EGR technique is one of the method to reduce NOx emission as it enables lower flame temperature and oxygen concentration in combustion chamber. The main objective of this paper is to fabricate an exhaust gas recirculation (EGR) set up for the CI engine and produce biodiesel from sunflower oil then investigates the usage of biodiesel in the diesel engine without any engine modification. Experiments are conducted in a single cylinder, four-stroke diesel engine with 10 % EGR and without EGR. The result shows that 40% NOx emission is reduced by using EGR and the performance of biodiesel was found to be comparable with diesel at all loads.
Keywords: Biodiesel, EGR, Emission, NOX. Nomenclature— MEGR mass of gas re circulated (kg/s) MTOTAL mass of air intake (kg/s).