THERMAL SCIENCE

International Scientific Journal

COMBUSTION AND EMISSION CHARACTERISTICS OF DIESEL ENGINE FUELLED WITH RICE BRAN OIL METHYL ESTER AND ITS DIESEL BLENDS

ABSTRACT
There has been a worldwide interest in searching for alternatives to petroleum-derived fuels due to their depletion as well as due to the concern for the environment. Vegetable oils have capability to solve this problem because they are renewable and lead to reduction in environmental pollution. The direct use of vegetable oils as a diesel engine fuel is possible but not preferable because of their extremely higher viscosity, strong tendency to polymerize and bad cold start properties. On the other hand, Biodiesels, which are derived from vegetable oils, have been recently recognized as a potential alternative to diesel oil. This study deals with the analysis of rice bran oil methyl ester (RBME) as a diesel fuel. RBME is derived through the transesterification process, in which the rice bran oil reacts with methanol in the presence of KOH. The properties of RBME thus obtained are comparable with ASTM biodiesel standards. Tests are conducted on a 4.4 kW, single-cylinder, naturally aspirated, direct-injection air-cooled stationary diesel engine to evaluate the feasibility of RBME and its diesel blends as alternate fuels. The ignition delay and peak heat release for RBME and its diesel blends are found to be lower than that of diesel and the ignition delay decreases with increase in RBME in the blend. Maximum heat release is found to occur earlier for RBME and its diesel blends than diesel. As the amount of RBME in the blend increases the HC, CO, and soot concentrations in the exhaust decreased when compared to mineral diesel. The NOx emissions of the RBME and its diesel blends are noted to be slightly higher than that of diesel.
KEYWORDS
PAPER SUBMITTED: 2007-03-07
PAPER REVISED: 2007-07-09
PAPER ACCEPTED: 2007-12-25
DOI REFERENCE: https://doi.org/10.2298/TSCI0801139G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2008, VOLUME 12, ISSUE 1, PAGES [139 - 150]
REFERENCES
  1. Bari, S. Yu, C. W. Lim, T. H., Performance Deterioration and Durability Issues while Running a Diesel Engine with Crude Palm Oil, Proceedings, I MECH Part D, Journal of Automobile Engineering, 216 (2002), 9, pp. 785-792
  2. Tickell, J., From the Fryer to the Fuel Tank, Joshua Tickell Publications, New Orleans, La., USA, 2003
  3. Freedman, B., Pryde, E. H., Mounts, T. L., Variables Affecting the Yield of Fatty Esters from Transesterified Vegetable Oils, JAOCS, 61 (1984), 10, pp.1638-1643
  4. Kaufaman, K. R., Ziejewski, M., Sunflower Methyl Esters for Direct Injected Diesel Engine, Transactions of ASAE, 27 (1986), 6, pp. 1626-1633
  5. Scholl, K. W., Sorenson, S. C., Combustion of Soybean Oil Methyl Ester in a direct Injection Diesel Engine, SAE paper 930934, 1993
  6. Nwafor, O. M. I., Emission Characteristics of Diesel Engine Operating on Rapeseed Methyl Ester, Renewable Energy, 29 (2004), 1, pp. 119-129
  7. Reddy, J. N., Ramesh, A., Parametric Studies for Improving the Performance of a Jatropha Oil-Fuelled Compression Ignition Engine, Renewable Energy, 31 (2006), 12, pp. 1994-2016
  8. Suryawanshi, J. G., Deshpande, N. V., Overview of EGR, Injection Timing and Pressure on Emissions and Performance of CI Engine with Pongamia Methyl Ester, SAE paper 2005-26-346, 2005
  9. Dorado, M. P., et. al., Exhaust Emissions from a Diesel Engine Fueled with Transesterified Waste Olive Oil, Fuel, 82 (2003), 11, pp. 1311-1315
  10. Machacon, H. T. C., et. al., The Effect of Coconut Oil and Diesel Fuel Blends on Diesel Engine Performance and Exhaust Emissions, JSAE Review, 22, (2001), 3, pp. 349-355
  11. Hamasaki, K., et. al., Combustion Characteristics of Diesel Engines with Waste Vegetable Oil Methyl Ester, Proceedings, 5th International Symposium on Diagnostics and Modeling of Combustion in Internal Combustion Engines - COMODIA 2001, Nagoya, Japan, 2001, pp. 410-419, http://powerlab.mech.okayama-u.ac.jp/~esd/comodia2001/3-09.pdf
  12. Breuer, C., The Influence of Fuel Properties on the Heat Release in DI-Diesel Engines, Fuel, 74 (1995), 12, pp. 1767-1771
  13. Vaughn, T., et. al., Ignition Delay of Bio-Ester Fuel Droplets, SAE paper 2006-01-3302, 2006
  14. Kinoshita, E., et. al., Diesel Combustion Characteristics of Coconut Oil and Palm Oil Biodiesels, SAE paper 2006-01-3251, 2006
  15. Subramanian, K. A., et. al., Utilization of Liquid Biofuels in Automotive Diesel Engines: An Indian Perspective, Biomass and Bioenergy, 29 (2005), 1, pp. 55-72
  16. Barnwal, B. K., Sharma, M. P., Prospects of Biodiesel Production from Vegetable Oils in India, Renewable and Sustainable Energy Reviews, 9 (2005), 4, pp. 363-378
  17. Ju, Y., Vali, S. R., Rice Bran Oil as a Potential Resource for Biodiesel - A Review, Journal of Scientific and Industrial Research, 64 (2005), 11, pp. 866-882
  18. Rao, G. L. N., et. al., Combustion Characteristics of a Direct Injection Diesel Engine Fuelled with Rice Bran Oil and Its Blends, Proceedings, 19th National Conference on IC Engines and Combustion, Chidambaram, Tamil Nadu, India, Allied publishers private limited, India, 2005, pp. 415-418
  19. Anandram, V., et. al., Effect of Refining Rice Bran Oil in Its Performance and Emission Characteristics as a Fuel in DI Diesel Engine, SAE paper 2006-01-3366, 2006
  20. Sinha, S., Agarwal, A. K., Combustion Characteristics of Rice Bran Oil Derived Biodiesel in a Transportation Diesel Engine, SAE paper 2005-26-354, 2005
  21. Ghadge, S. V., Raheman, H., Process Optimization for Biodiesel Production from Mahua (Madhuca indica) Oil Using Response Surface Methodology, Bioresource Technology, 97 (2006), 3, pp. 379-384
  22. Anandram, V., et. al., Engine Analysis of Single Cylinder DI Diesel Engine Fulled with Sunflower Oil, Sunflower Oil Methyl Ester and Its Blends, Proceedings, ASME International Combustion Division 2006 Fall Technical Conference, Sacramento, Cal., USA, paper ICEF2006-1573, 2006

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