Performance, Emissions, Combustion and Vibration Analysis of a CI Engine Fueled with Coconut and Used Palm Cooking Oil Methyl Ester
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School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Penang, Malaysia
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Department of Engineering, School of Engineering, Computing and Built Environment, UOW Malaysia KDU Penang University College, 32 Jalan Anson, Georgetown 10400, Penang, Malaysia
3
Division of Computational Mechatronics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City 760310, Vietnam
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Faculty of Electrical & Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City 760310, Vietnam
5
Department of Mechatronics Engineering Technology, Ho Chi Minh City University of Food Industry, 140 Le Trong Tan Street, Tan Phu District, Ho Chi Minh City 760310, Vietnam
*
Authors to whom correspondence should be addressed.
Processes 2020, 8(8), 990; https://doi.org/10.3390/pr8080990
Received: 22 July 2020
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Revised: 5 August 2020
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Accepted: 11 August 2020
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Published: 15 August 2020
(This article belongs to the Special Issue Progress in Energy Conversion Systems and Emission Control)
Biodiesels from coconut and palm cooking oil are viable alternatives to diesel fuel due to their environmental sustainability and similar physicochemical properties compared to diesel. In the present study, these fuels were tested separately in a diesel engine by blending with fossil diesel in proportions of 10%, 20%, 30% and 40% by volume. Experiments were conducted under a constant brake mean effective pressure (BMEP) of 400 kPa and at 2000 rpm. The results revealed similarities in engine performance, emissions, combustion and engine block vibration for used palm cooking oil methyl ester (UPME) fuel blends and coconut methyl ester (CME) fuel blends. Most blends resulted in slight improvements in brake specific energy consumption (BSEC) and brake thermal efficiency (BTE). A maximum reduction of 54%, 89% and 16.8% in pollutant emissions of brake specific hydrocarbons (BSHC), brake specific carbon monoxide (BSCO) and brake specific nitrogen oxides (BSNOx), respectively, was observed with UPME and CME in the blends. The cylinder pressure profiles when UPME-diesel and CME-diesel blends were used were comparable to a standard diesel pressure trace, however, some deviations in peak pressure were also noticed. It was also apparent from the results that engine vibration was influenced by the type of methyl ester used and its blend composition. Notably, the rate of pressure increase was maintained within an acceptable limit when the engine was fueled with both of the methyl ester blends.
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Keywords:
non-edible oil; combustion; vibration; coconut; waste cooking oil; emissions
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MDPI and ACS Style
Teoh, Y.H.; How, H.G.; Balakrishnan, N.K.; Le, T.D.; Nguyen, H.T. Performance, Emissions, Combustion and Vibration Analysis of a CI Engine Fueled with Coconut and Used Palm Cooking Oil Methyl Ester. Processes 2020, 8, 990. https://doi.org/10.3390/pr8080990
AMA Style
Teoh YH, How HG, Balakrishnan NK, Le TD, Nguyen HT. Performance, Emissions, Combustion and Vibration Analysis of a CI Engine Fueled with Coconut and Used Palm Cooking Oil Methyl Ester. Processes. 2020; 8(8):990. https://doi.org/10.3390/pr8080990
Chicago/Turabian StyleTeoh, Yew H., Heoy G. How, Navaneetha K. Balakrishnan, Thanh D. Le, and Huu T. Nguyen. 2020. "Performance, Emissions, Combustion and Vibration Analysis of a CI Engine Fueled with Coconut and Used Palm Cooking Oil Methyl Ester" Processes 8, no. 8: 990. https://doi.org/10.3390/pr8080990
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