Title: Exergy and emission analyses of a methanol fumigated dual-fuel engine employing biodiesel as a pilot fuel

Authors: Krishnamani Selvaraj

Addresses: School of Mechanical Engineering, SASTRA University, Thanjavur – 613401, India

Abstract: In this study, a single-cylinder direct ignition diesel engine was converted to a dual-fuel compression ignition engine, with methanol as the primary fuel and Gossypium herbaceum methyl ester (biodiesel) as the pilot fuel. In this work, the engine is operated as a dual-fuel engine by fumigating methanol into the intake air stream with different energy substitution percentages of 10%, 20%, and 30% using biodiesel as pilot fuel. The results indicate that with methanol fumigation, the exergy and fuel conversion efficiency reach a maximum of 49.84% and 31.58% with methanol fumigation of 30% 'energy substitution percentage' in the dual-fuel engine, which is comparatively higher than the conventional biodiesel reading.

Keywords: methanol fumigation; biodiesel; dual-fuel engines; engine performance; exhaust emissions; exergy analysis.

DOI: 10.1504/IJEX.2024.142634

International Journal of Exergy, 2024 Vol.45 No.3/4, pp.279 - 295

Received: 26 Apr 2024
Accepted: 08 Sep 2024
Published online: 12 Nov 2024 *

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