Effect of Compression Ratio on Diesel Engine Performance and Emission Fueled with Tamanu Oil Methyl Ester and its Blends

Abstract:

Biofuels are renewable, nontoxic and ecofriendly fuels that can play an important role in automobile industries. They can successfully replace diesel fuel and helps in decreasing the import of crude oil. The discarded seed of Calophyllun Inophyllum which are planted in India mainly to prevent soil erosion is considered as the possible source for extracting biodiesel. The tamanu oil extracted had a fatty acid value of 48 mg KOH/g, therefore a two stage esterification processes with acid and base catalyst were used for converting it into biodiesel. The fuel was then tested for properties such as viscosity, calorific value and carbon residue using standard test procedures and found to be analogous with diesel, which makes it possible to use this alternate fuel in the existing engine without any modification. A single cylinder, four stroke, constant speed, variable compression ratio, direct injection diesel engine developing 5KW power with provision for computerized data acquisition is used to evaluate the performance and emission characteristics. The test results were analyzed for biodiesel and its blends in comparison with standard diesel at different compression ratios (16:1, 18:1, 20:1 & 22:1). The performance and emission results of the diesel engine revealed that biodiesel can be blended with diesel up to 40% at an optimum CR of 20, in order to get improved performance and reduced emission.

• Periodical: Advanced Materials Research (Volumes 984-985)
• Pages: 850-854
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.984-985.850
• Online since: July 2014
• Authors: G. Antony Miraculas*, N. Bose
• Keywords: Biodiesel, Diesel Engine, Emission, Tamanu Oil Methyl Ester, Transesterification

References

[1] Joshi H C, Biodiesel from Jatropha – an alternative fuel for the future, Scientific Research Magazine, National Research Development Corporation New Delhi, Issue - Sep. -Oct. (2003), 205-216.

[2] S Bettis BL, Peterson CO, Auld DL, Driscoll DJ, Peterson ED. Fuel characteristics of vegetable oil from oil seed crops in the Pacific Northwest. Agronomy Journal 1982; 74: 335–9.

DOI: 10.2134/agronj1982.00021962007400020018x

[3] Sapaun SM, Masjuki HH, Azlan A. The use of palm oil as diesel fuel substitute. Journal of Power and Energy—Part A 1996; 210: 47–53.

DOI: 10.1243/pime_proc_1996_210_007_02

[4] D Tadashi Murayama, Young-taig Oh, Noboru Miyamoto, Takemi Chikahisa, Nobukazu Takagi, Koichiro Itow. Low carbon flower buildup, low smoke and efficient diesel operation with vegetable oils by conversion to monoesters and blending with diesel oil or alcohols. SAE paper 841161.

DOI: 10.4271/841161

[5] Arregle J, ruiz S, Desantes JM, Delage A. Characterization of the injection combustion process in a D.I. Diesel engine running with rape oil methyl ester. SAE paper 1999-01-1497.

DOI: 10.4271/1999-01-1497

[6] Senthil Kumar M, Ramesh A, Nagalingam B. Use of hydrogen to enhance the performance of a vegetable oil fuelled compression ignition engine. International Journal of Hydrogen Energy 2003; 28: 1143–54.

DOI: 10.1016/s0360-3199(02)00234-3

[7] Sahoo PK, Das LM, Babu MKG, Naik SN. Biodiesel development from high acid value polanga seed oil and performance evaluation in a CI engine. Fuel 2007; 86: 448–54.

DOI: 10.1016/j.fuel.2006.07.025