Title: Experimental investigation for partially premixed compression ignition in a diesel engine using n-butanol, biodiesel and diethyl ether blends

Authors: Gangeya Srinivasu Goteti; P. Tamilselvan

Addresses: Mechanical Engineering Department, Andhra Loyola Institute of Engineering and Technology, Vijayawada – 520008, India ' School of Mechanical Engineering, VIT University, Chennai – 600127, India

Abstract: This research aims to optimise combustion by reducing emissions and improving performance parameters. This research also investigates biodiesel usage and an ignition improver with an increased compression ratio of 20 by supplying n-butanol with preheated air. The experimental work was first conducted with diesel to generate baseline data. It was then performed using a blend of n-butanol, diesel, and an ignition improver. The experiment was repeated by using the combustible mixture B25N15DE1, which contains Prosopis juliflora methyl ester, diesel, DEE, and n-butanol vapours on a volume basis. The n-butanol mists were added by port injection in the proportion of 15% into the preheated air stream to attain partially premixed compression ignition. The increased brake thermal efficiency (33.21%) and reduced emissions of hydrocarbons with 65 ppm and carbon monoxide of 0.29% were observed, along with the increased heat release rate (48.1 J/°CA) at a partially premixed mode. [Received: 14 June 2022; Accepted: 24 June 2024]

Keywords: brake thermal efficiency; combustion; crank angle; emission; heat release rate.

DOI: 10.1504/IJOGCT.2025.146518

International Journal of Oil, Gas and Coal Technology, 2025 Vol.37 No.4, pp.397 - 416

Accepted: 24 Jun 2024
Published online: 02 Jun 2025 *

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