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Attaining simultaneous reduction in nox and smoke by using water-in-biodiesel emulsion fuels for diesel engine

Zainal Ambri, Abdul Karim and Khan, Mohammed Yahaya and Abdul Rashid, Abdul Aziz and Hagos, F. Y. (2019) Attaining simultaneous reduction in nox and smoke by using water-in-biodiesel emulsion fuels for diesel engine. Platform: A Journal of Engineering, 3 (2). pp. 1-21. ISSN 2636-9877

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Abstract

This paper presents the study of water-in-biodiesel emulsions (WiBE) stabilized by surfactants with different hydrophiliclipophilic balance (HLB) on a single-cylinder diesel engine. The engine performance and exhaust emissions were compared against the base fuel biodiesel (B5 diesel) which contained 5% palm oil methyl ester (POME) in the diesel fuel, at a constant engine speed of 2000 rpm with different engine loads. 36 emulsion blends of B5 diesel mixed with 9%, 12% and 15% volume of water, HLB values of 6, 7, 8 and 9, and surfactant dosage of 5%, 10% or 15% by percentage volume of water added. The results exhibited 11.7% lower engine power with WiBE as compared to B5 diesel. It was also observed that WiBE produced higher in-cylinder pressure and heat release rate. WiBE with higher water content at high load condition produced up to 15.2% higher peak pressure with a significant reduction in both NOx and smoke opacity, while a moderate decrease in the exhaust temperature was recorded for WiBE. The research work proved that WiBE with 15% water content with optimum HLB value is capable of reducing up to 79% NOx and 23% smoke opacity simultaneously, due to the heat sink effect during combustion.

Item Type: Article
Uncontrolled Keywords: emulsified fuels, surfactant, microexplosion, exhaust emission, palm oil, heat sink effect
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 16 Dec 2019 03:58
Last Modified: 16 Dec 2019 03:58
URI: http://umpir.ump.edu.my/id/eprint/26945
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