Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30069
An Experimental Investigation of Petrodiesel and Cotton Seed Biodiesel (CSOME) in Diesel Engine

Authors: P. V. Rao, Jaedaa Abdulhamid


Biodiesel is widely investigated to solve the twin problem of depletion of fossil fuel and environmental degradation. The main objective of the present work is to compare performance, emissions, and combustion characteristics of biodiesel derived from cotton seed oil in a diesel engine with the baseline results of petrodiesel fuel. Tests have been conducted on a single cylinder, four stroke CIDI diesel engine with a speed of 1500 rpm and a fixed compression ratio of 17.5 at different load conditions. The performance parameters evaluated include brake thermal efficiency, brake specific fuel consumption, brake power, indicated mean effective pressure, mechanical efficiency, and exhaust gas temperature. Regarding combustion study, cylinder pressure, rate of pressure rise, net heat release rate, cumulative heat release, mean gas temperature, mass fraction burned, and fuel line pressure were evaluated. The emission parameters such as carbon monoxide, carbon dioxide, un-burnt hydrocarbon, oxides of nitrogen, and smoke opacity were also measured by a smoke meter and an exhaust gas analyzer and compared with baseline results. The brake thermal efficiency of cotton seed oil methyl ester (CSOME) was lower than that of petrodiesel and brake specific fuel consumption was found to be higher. However, biodiesel resulted in the reduction of carbon dioxide, un-burnt hydrocarbon, and smoke opacity at the expense of nitrogen oxides. Carbon monoxide emissions for biodiesel was higher at maximum output power. It has been found that the combustion characteristics of cotton seed oil methyl ester closely followed those of standard petrodiesel. The experimental results suggested that biodiesel derived from cotton seed oil could be used as a good substitute to petrodiesel fuel in a conventional diesel without any modification.

Keywords: Diesel engine, Cotton seed, Biodiesel, performance, combustion, emissions.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 980


[1] Diesel,R(1912) (
[2] Kahraman Bozbas, " Biodiesel as an alternative motor fuel: Production and policies in the European Union," Renewable and Sustainable Energy Reviews, vol.12, Issue 2, pp. 299-592, Feb.2008.
[3] Freedman, B. and E. H. Pryde. 1982. Fatty esters from vegetable oils for use as a diesel fuel. In Vegetable Oils Fuels: Proc. Int. Conf. on Plant and Vegetable Oils as Fuels, 117–122. St.Joseph, Mich.: ASAE.
[4] Breda Kegl, Marko Kegl, Stanislav Pehan, " Green Diesel Engines: Biodiesel Usage in Diesel Engines," Book style, pp.199
[5] James G. Speight (editor), " The Biofuels Handbook," book style, pp.172
[6] Ashok Pandey (editor), " Handbook of Plant-Based Biofuels," Book style, pp.31
[7] PV Rao, Stephen Clarke, Richard Brown and Kai-Shen Wu, "Influence of iodine value on combustion and NOx characteristics of a DI diesel engine," Conference Paper 37808.
[8] Graboski, M. S., and R. L. McCormick. 1998. Combustion of fat and vegetable oil derived fuels in diesel engines. Prog. Energy Combust. Science 24: 125–164.
[9] Schumacher, L. G., W. G. Hires, and S. C. Borgelt. 1992. Fueling a diesel engine with methyl–ester soybean oil. In Liquid Fuels from Renewable Resources: Proc. Alternative Energy Conference, 124–131. St. Joseph, Mich.: ASAE.
[10] Van Gerpen, J, Shanks, B, Pruszko, R; Clements, L.D.; Knothe, G., "Biodiesel Analytical Methods," August 2002-January 2004. National Renewable Energy Laboratory. NREL/SR-510-36240, July 2004, 95p.
[11] Divya Bajbai and V.K. Tyagi " Biodiesel: Source, Production, Composition, Properties and its Benefits" Journal of Oleo Science, Vol. 55, No. 10, 487-502 (2006).
[12] Breda Kegel "NOx Emissions using Biodiesel" Journal of KONES power train and Transport, Vol. 13, No.4
[13] Kazuhiro Akihama, Yoshiki Takatori, Kiomi Nakakita, "Effect of Hydrocarbon Molecular Structure on diesel Exhaust Emissions". A research report, R&D review of Toyota CSDL Vol. 38 No.4
[14] Landen, E., "Combustion studies of the diesel engine," SAE Technical Paper 460218, 1946, doi:10.4271/460218.