Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31097
Mathematical Correlation for Brake Thermal Efficiency and NOx Emission of CI Engine using Ester of Vegetable Oils

Authors: Samir J. Deshmukh, Lalit B. Bhuyar, Shashank B. Thakre, Sachin S. Ingole


The aim of this study is to develop mathematical relationships for the performance parameter brake thermal efficiency (BTE) and emission parameter nitrogen oxides (NOx) for the various esters of vegetable oils used as CI engine fuel. The BTE is an important performance parameter defining the ability of engine to utilize the energy supplied and power developed similarly it is indication of efficiency of fuels used. The esters of cottonseed oil, soybean oil, jatropha oil and hingan oil are prepared using transesterification process and characterized for their physical and main fuel properties including viscosity, density, flash point and higher heating value using standard test methods. These esters are tried as CI engine fuel to analyze the performance and emission parameters in comparison to diesel. The results of the study indicate that esters as a fuel does not differ greatly with that of diesel in properties. The CI engine performance with esters as fuel is in line with the diesel where as the emission parameters are reduced with the use of esters. The correlation developed between BTE and brake power(BP), gross calorific value(CV), air-fuel ratio(A/F), heat carried away by cooling water(HCW). Another equation is developed between the NOx emission and CO, HC, smoke density (SD), exhaust gas temperature (EGT). The equations are verified by comparing the observed and calculated values which gives the coefficient of correlation of 0.99 and 0.96 for the BTE and NOx equations respectively.

Keywords: Performance, Emission, esters, and vegetable oil

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1943


[1] Y.C. Sharma, B. Sing, "Development of biodiesel from karanja, a tree found in rural India," Fuel. 87, pp1740-42, 2008.
[2] A. Srivastava, R. Prasad, "Triglycerides-based diesel fuels," Renew Sustain Energy Rev , 4, pp 111-133, 2000.
[3] A. K. Agarwal, "Biofuels (alcohols and biodiesel) applications as fuels for internal combustion engines," Progress in Energy and Combustion Science. 33, pp 233-271, 2007.
[4] Barnwal BK, Sharma MP. "Prospects of biodiesel production from vegetable oils in India," Renewable and Sustainable Energy Reviews.9- 4, pp 363-78, 2005.
[5] Ma F, Hanna, "Biodiesel production: a review." Bio resource Technology. 70, pp 1-15, 1999.
[6] A. Demirbas, "Studies on cottonseed oil biodiesel prepared in noncatalytic SCF conditions," Bioresource Technology. 99-5, pp 1125-30, 2008.
[7] Y.C. Sharma, B. Singh, S.N. Upadhyay, "Advancements in development and characterization of biodiesel: A review." Fuel. 87, pp 2355-73, 2008.
[8] K. Pramanik, "Properties and use of Jatropha curcas oil and diesel fuel blends in compression ignition engine," Renewable Energy. 28, pp 239- 48, 2003.
[9] S. J. Deshmukh, L. B. Bhuyar, "Transesterified Hingan (Balanites) oil as a fuel for compression ignition engines," Biomass and Bioenergy. Article in press, 2008
[10] Usta N. "Use of tobacco seed oil methyl ester in a turbocharged indirect injection diesel engine," Biomass and Bioenergy. 28, pp 77-86, 2005.
[11] S. V. Gadge, H. Raheman, "Biodiesel production from mahua (Madhuca indica) oil having high free fatty acids," Biomass and Bioenergy. 28, pp 601-605, 2005.
[12] R. K. Rajput, "Fluid Mechanics and Hydraulic Machines," S Chand & Company Ltd., New Delhi, ISBN: 812191666-1, 2002.
[13] R. W. Lucky, "Automatic equalization for digital communication," Bell Syst. Tech. J., vol. 44, no. 4, pp. 547-588, Apr. 1965.