Effect of EGR on a sationary VCR diesel engine using cottonseed biodiesel (B20) fuel

Nitin M. Sakhare, Pankaj S. Shelke, Subhash Lahane(a, *), A. T. Autee

Department of Mechanical Engineering, MIT Aurangabad, Maharashtra, India.

Carbon – Science and Technology 8/3 (2016) 60 – 67. 

© Applied Science Innovations Private Limited, India.

Full Text (OPEN ACCESS): CST-205.pdf

Keywords: EGR, biodiesel (cotton seed), NOx, diesel engine, fuel, diesel engine, Biodiesel, alternative fuel, Biofuel, Cotton seed oil, emission, exhaust, 

Abstract: This paper presents a view on comparative study of use of diesel fuel with B20 biodieselblend (Diesel (80 %, by vol.) and Cotton seed oil (20 %, by vol.)) derived from Cotton seeds. As higher NOx emission and higher brake specific fuel consumption are main challenges for effective utilization of biodiesel fuel in a diesel engine, there is alarming need to find out the long term solution to reduce NO_x emission for better utilization of biodiesel fuel in a diesel engine. Exhaust gas recirculation (EGR) is one of the useful technologies to reduce the NOx emission of a diesel engine. In the present research work test is conducted on 3 KW single cylinder, four stroke, water cooled, variable compression ratio (VCR) computerized diesel engine using diesel and B20 cotton seed biodiesel blend to study the effect of exhaust gas recirculation on performance and emissions characteristics of a diesel engine in terms of fuel consumption, thermal efficiency and emissions such as hydrocarbon (HC), carbon monoxide (CO), oxides of nitrogen (NO_x) and carbon dioxide (CO₂) of a diesel engine. The constant engine speed of 1500 rpm was maintained through-out the experiment test. The exhaust gas recirculation was varied as 4 % and 6 % at different loading conditions with diesel and B20 biodiesel. The results show that the significant reduction in oxides of nitrogen (NO_x) with 4 % and 6 % EGR for B20 whereas marginal increment in CO and HC emissions.