Title: Combustion and emission characteristics of diesel engine fuelled with methyl esters of pungam oil and rice bran oil

Authors: G. Lakshmi Narayana Rao, N. Nallusamy, S. Sampath, K. Rajagopal

Addresses: Sri Venkateswara College of Engineering, P.B. No. 3, Pennalur, Sriperumbudur, Tamil Nadu 602 105, India. ' Sri Venkateswara College of Engineering, P.B. No. 3, Pennalur, Sriperumbudur, Tamil Nadu 602 105, India. ' Sri Venkateswara College of Engineering, P.B. No. 3, Pennalur, Sriperumbudur, Tamil Nadu 602 105, India. ' Jawaharlal Nehru Technological University, Hyderabad, Andhra Pradesh 500 072, India

Abstract: Biodiesel derived from vegetable oils and animal fats can be used in diesel engines with little or no modifications. In this work, the combustion, performance and emission characteristics of various biodiesel (rice bran oil and pungam oil) and their blends are evaluated in a direct injection diesel engine. Lower ignition delay, higher peak pressure and heat release rate with almost same brake thermal efficiency are obtained for 20% biodiesel blend as compared with diesel fuel. They exhibited lower unburned hydrocarbon, carbon monoxide and soot emissions with a penalty of higher NO_x emissions.

Keywords: biodiesel; diesel engines; combustion; emissions; pungam oil; methyl esters; PGMEs; rice bran oil; ignition delay; peak pressure; heat release rate; brake thermal efficiency; biofuels.

DOI: 10.1504/IJGEI.2008.018012

International Journal of Global Energy Issues, 2008 Vol.29 No.3, pp.314 - 328

Published online: 26 Apr 2008 *

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