Emission Characteristics of a Diesel Engine Fuelled with Preheated Vegetable Oil and Biodiesel
Anh Tuan Hoang* and Van Thu Nguyen
Faculty of Mechanical Engineering, Ho Chi Minh University of Transport
No. 2, D3 Road, Ward 25, Binh Thanh District, Ho Chi Minh City, Vietnam
*Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
Currently, there are many studies carried out aimed at finding alternative fuels. These renewable resources are potentially useful for the environment since they could replace the depleting fossil fuels. The emission characteristics of diesel engine fueled with diesel oil (DO), biodiesel from Jatropha oil (JOME), and preheated coconut oil (PCO) were used for comparative analysis. The fuels were tested at full load and different revolution, from 1000 rpm to 2000 rpm of engine speed. The exhaust gas temperature (Tex) and emission parameters such as carbon monoxide (CO), unburnt hydrocarbons (HCs), smoke, and oxides of nitrogen (NOx) were measured and compared. Results showed that, relative to diesel fuel, the CO and HC emissions were higher in the case of using preheated coconut oil and lower in the case of using JOME. The NOx emissions were also seen higher for JOME and lower for PCO in comparison with DO. Findings of this paper denote that JOME and preheated coconut oil up to 100° C (PCO_t100) can be considered as fuels for diesel engines.
INTRODUCTION
Currently, air pollution is ruining massively our life, environment, and health, as speedy depletion of fossil fuels is occurring and energy demands are ever increasing. These urgent matters require us to find the alternative fuels that would satisfy our energy demands and provide sustainable and maximum benefits for the environment. The use of fossil fuels for transportation (e.g., car, motorcycle, airplane, ship, and train) causes most of the air pollution. Hence, manufacturers have designed and fabricated engines that can run on various alternative fuels and satisfy regulatory emission limits. Many past and ongoing studies worldwide – even in many developing countries – have sought to evaluate the performance of existing engines in terms of power, moment, specific fuel consumption (SFC), exhaust emission, and combustion characteristics. Alternative fuels explored for use by internal combustion engines (ICE) include alcohols, liquefied petroleum gas (LPG), biogas, biodiesels, preheated vegetable oil, hydrogen, compressed natural gas (CNG), bio-ethanol, bio-methanol, dimethyl ether (DME), diethyl ether (DEE), and fossil fuel blends. Several researchers have concluded that biodiesel and preheated vegetable oils hold highly promising potential when used as alternative fuels in ICEs if their properties are improved to the same level as those of diesel fueL . . . . read more
REFERENCES
Agarwal AK. 1998. Vegetable oils versus diesel fuel: development and use of bio-diesel in a compression ignition engine. TERI Information Digest on Energy (TIDE) 8: 191-203.
Almeida SCAD, Belchior CR, Nascimento M.V.G, Vieira LDSR, Fleury G. 2002. Performance of a diesel generator fuelled with palm oil. Fuel 81:2097-2102.
Altin R, Cetinkaya S, Yucesu HS. 2001. The potential of using vegetable oil fuels as fuel for diesel engines. Energy Conversion and Management 42:529-538.
Al-Widyan MI, Tashtoush G, Abu-Qudais M. 2002. Utilization of ethyl ester of waste vegetable oils as fuel in diesel engines. Fuel Process Technology 76(2):91-103.
CANAKCI M, VAN GERPEN JH. 2003. Comparison of engine performance and emissions for petroleum dieselfuel, yellow-grease biodiesel and soybean-oil biodiesel. Trans ASAE 46:937-944.
CANAKCI M, AHMET E, EROL A. 2006. Performance and exhaust emissions of a biodiesel engine. Applied Energy 83:594-605.
Dorado MP, Ballesteros E, Arnal JM, Gomez J, Lopez FJ. 2003. Exhaust emissions from a diesel engine fuelled with transesterified waste olive oil. Fuel 82:1311-1315.
Forson FK, Oduro EK, Donkoh EH. 2004. Performance of jatropha oil blends in a diesel engine. Renewable Energy 29:1135-1145.
Hanbey H, Huseyin A. 2010. Performance and emission evaluation of a CI engine fueled with preheated raw rapeseed oil (RRO)–diesel blend. Applied Energy 87:786-790.
He Y, Bao YD. 2003. Study on rapeseed oil as alternative fuel for a single cylinder diesel engine. Renewable Energy 28:1447-1453.
Kalam MA, Masjuki HH. 2004. Emissions and deposit characteristics of a small diesel engine when operated on preheated crude palm oil. Biomass and Bioenergy 27(3):289-297.
Ming Z, Mwila CM, Graham TR, Meiping W, David SKT, Jimi T. 2008. Biodiesel engine performance and emissions in low temperature combustion. Fuel 87(6):714-722.
Monyem A, Van Gerpen JH, Canakci M. 2001. The effect of timing and oxidation on emissions from biodiesel-fueled engines. ASAE 44:35-42.
Nabi MN, Akhter AS, Shahadat MMZ. 2006. Improvement of engine emissions with conventional diesel fuel and diesel–biodiesel blends. Bio-resource Technology 97:372-378.
Nandkishore DR, Sudheer PB, Yohan M. 2012. Performance and emission characteristics of straight vegetable oil-ethanol emulsion in a compression ignition engine. Asian Research Publishing Network (ARPN) 7(4):447-452.
Nwafor OMI. 2004. Emission characteristics of diesel engine running on vegetable oil with elevated fuel inlet temperature. Biomass and Bioenergy 27(5):507-511.
Puhan S, Vedaraman N, Sankaranarayanan G, Bharat Ram BV. 2005. Performance and emission study of mahua oil (Madhuca indica oil) ethyl ester in a 4-stroke natural aspirated direct injection diesel engine. Renewable Energy 30:1269-1278.
Ramadhas AS, Jayaraj S, Muraleedharan C. 2005. Characterization and effect of using rubber seed oil as fuel in the compression ignition engines. Renewable Energy 30:795-803.
Ramadhas AS, Muraleedharan C, Jayaraj S. 2005. Performance and emission evaluation of a diesel engine fueled with methyl esters of rubber seed oil. Renewable Energy 30:1700-1709.
Schumacher LG, Borgelt SC, Fosseen D, Goetz W, Hires WG. 1996. Heavy-duty engine exhaust emission tests using methyl ester soybean oil/diesel fuel blends. Bio-resource Technology 57(1):31-36.
Sendzikiene E, Makareviciene V, Janulis P. 2006. Influence of fuel oxygen content on diesel engine exhaust emissions. Renewable Energy 31:2505-2512.
Srivathsan VR, Srinivasan LN, Karuppan M. 2008. An overview of enzymatic production of biodiesel. Bio-resource Technology 99(10):3975-3981.
Yu CW, Bari S, Ameen A. 2002. A comparison of combustion characteristics of waste cooking oil with diesel as fuel in a direct injection diesel engine, Proceedings of the Institution of Mechanical Engineers: Part D: Journal of Automobile Engineering 216 (3):237-243.
Zheng M, Mulenga MC, Reader GT, Wang M, Ting DSK. 2006. Influence of biodiesel fuel on diesel engine performance and emissions in low temperature combustion. SAE 2006-01-3281.
Zheng M, Mulenga MC, Reader GT, Wang M, Ting DSK, Tjong J. 2008. Biodiesel engine performance and emissions in low temperature combustion. Fuel 87:714-722.
