Emission Reduction Operating Parameters for a Dual-Fuel Diesel Engine Run on Biogas and Rice-Bran Biodiesel
Publication: Journal of Energy Engineering
Volume 143, Issue 4
Abstract
Biogas has great potential as a clean alternative fuel for dual-fuel diesel engines. The present work is aimed at investigating the operating parameters such as compression ratio (CR) and injection timing (IT) for a dual-fuel diesel engine run on biogas and rice-bran biodiesel. The motivation behind this investigation is to obtain a diesel equivalent performance together with a reduction in emission. To achieve this, a single-cylinder, direct-injection, variable-compression-ratio diesel engine is modified into a dual-fuel diesel engine by incorporating a venturi gas mixer at the inlet manifold. A set of combinations composed of CRs of 17, 17.5, and 18 and ITs of 23°, 26°, 29°, and 32° before top dead center (BTDC) at different loading conditions are considered. The combination of BTDC and is found to produce a maximum brake thermal efficiency of 25.88% and a liquid fuel replacement of 82.75% at 100% load. On average, there is a reduction of carbon monoxide as well as hydrocarbon emissions by 11.64 and 14.21%, respectively. On the other hand, for the same setting, there is an increase of oxides of nitrogen emissions by 39%.
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Acknowledgments
The work reported here forms a part of the Defence Research Laboratory, DRDO, Tezpur, Assam, India, sponsored research project “Utilization of Biowaste for Generating Power in Diesel Engines.” The financial support extended is gratefully acknowledged.
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Published In
Journal of Energy Engineering
Volume 143 • Issue 4 • August 2017
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©2016 American Society of Civil Engineers.
History
Received: Apr 22, 2016
Accepted: Jul 22, 2016
Published online: Nov 4, 2016
Discussion open until: Apr 4, 2017
Published in print: Aug 1, 2017
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