Prediction of Cetane Number for Bio-Fuels Using In-Cylinder Parameter

Lakshmi narayana Rao G.*, Bhaskar K.**, Sampath S.***, Rajagopal K.****
*Assistant Professor,Department of Mechanical Engineeirng ,Sri Venkateshwara College of Engineering,Pennalur.
**Senior Lecturer,Department of Automobile Engineering,Sri Venkateshwara College of Engineering,Pennalur,Sriperumpudhur,Tamilnadu,India.
***Director (R&D),Sri Venkateshwara College of Engineering,Pennalur,Sriperumpudhur,Tamilnadu,India.
****Vice-Chancellor,Jawaharlal Nehru Technological University,Hyderabad,Andhra Pradesh,India.
Periodicity:November - January'2008
DOI : https://doi.org/10.26634/jfet.3.2.668

Abstract

Many researchers have concluded that bio-diesel holds a promise as an alternative fuel for diesel engines because of its advantages compared to conventional diesel fuel. The efficiency of a Diesel engine depends upon several factors like the conversion rate of chemical energy of the fuel into heat. Cetane number of diesel fuels is an important parameter because of its direct impact on the performance, emission and combustion-generated noise in diesel engines. Conventional method of determining the cetane number requires CFR engine with primary reference fuels. This process is well established for diesel fuel even though it is a costlier and time-consuming process. In this work, an attempt was made to develop correlations to predict cetane number for selected bio fuels. The bio fuels considered were Pungam Methyl Esters (PGME), Sunflower Methyl Esters (SFME), Rice Bran Methyl Esters (RBME), Palm Oil Methyl esters (POME) and Jetropha Oil Methyl Esters (JOME). Chennai Petroleum Corporation Limited, Chennai, India supplied fuels with known cetane numbers of 25, 51 and 63. These reference fuels were tested in a 4.4 kW naturally aspirated stationary, air-cooled, four-stroke, direct injection engine coupled with an electrical dynamometer. This engine was instrumented with AVL piezo-electric pressure transducer and angle encoder.  The transducer and the angle encoder were interfaced with personal computer to store the pressure versus crank angle data. The AVL Indimeter software was used to analyze the collected data. Initially, experiments were conducted with fuels of known cetane number at various loads. From these results ignition delay was determined and tabulated for the above conditions. The correlations were developed based on ignition delay for the known cetane number of fuels at all loads. The same experimental procedure was followed for all the bio-fuels. The correlations were used to find the cetane number of bio-fuels. It was found that cetane number predicted by the correlations matched with available data for the bio-fuels.

Keywords

Pungam Methyl Esters (PGME), Sunflower Methyl Esters (SFME), Rice Bran Methyl Esters (RBME), Palm Oil Methyl esters (POME) and Jetropha Oil Methyl Esters (JOME)

How to Cite this Article?

Lakshmi narayana Rao G., Bhaskar K., Sampath S., and Rajagopal K. (2008). Prediction of Cetane Number for Bio-Fuels Using In-Cylinder Parameter. i-manager’s Journal on Future Engineering and Technology, 3(2), 47-54. https://doi.org/10.26634/jfet.3.2.668

References

[1 ]. Li, X., Chippior, W. L„ and Gulder, 6. L„ "Effects of Fuel Properties on Exhaust Emissions of a Single Cylinder DI Diesel Engine", SAE Paper No. 962116,1996.
[2]. Gulder, 6. L. and Glavincevski B., "Ignition Quality Determination of Diesel Fuels from Hydrogen Type Distribution of Hydrocarbons"' Combustion and Flame, 63 (1986), 231-238.
[3]. Boerlage, G.D. and J.J. Broeze. 1932, Ignition Quality of Diesel Fuels as Expressed in Cetane Numbers. S.A.E. Journal. July. pp. 283-293
[4]. Aradi A.A., Ryan III T.W., Cetane effect on diesel ignition delay times measured in a constant volume combustion apparatus. SAE technical paper series 952352
[5]. Itoh, Y., and Henein, N. A., 1997, "Determination of Ignition Delay in Diesel Engines From Constant Volume Vessels Data," Proceedings of ASME-ICE Spring Technical Conference, ICE-vol. 28-1, pp. 29-34
[6]. Allard, L.N.,Webster, G.D., Hole, NJ., Ryan Ill.T.W., Oft D. and Fairbridge CW., Diesel fuel ignition quality as determined in the Ignition Quality Tester (IQT), SAE technical paper series 961182; 1996
[7], Wong, C. L. and Steere, D. E„ 1982, "The Effects of Diesel Fuel Properties and Engine Operating Conditions on Ignition Delay," SAE Paper 821231
[8]. Assanis, D. N., Filipi, Z. S., Fiveland, S. B. and Syrimis, M., "A Predictive Ignition Delay Correlation Under Steady- State and Transient Operation of a Direct- Injection Diesel Engine", 1999 ASME Fall Technical Conf., Paper No. 99- ICE-231, ICE Vol. 32-2,1999
[9]. Knothe G. and Bagby M.O. and Ryan III T.W., "Cetane Numbers of Fatty Compounds; Influence of Compound Structure and of Various Potential Cetane Improvers", SAE technical paper series, 971681,1997.
[10]. Abou-Rachid,H., Bonneviot, L., Xu, G. and Kaliaguine.S.," On the correlation between kinetic rate constants in the auto-ignition process of some oxygenates and their cetane number; a quantum chemical study". Journal of Molecular Structure (Thermochem),621 (2003), 293-304.
[11]. Xing-cai L., Jian-guang Y, Wu-gao Z. and Zhen H., "Effect of cetane number improver on heat release rate and emissions of high speed diesel engine fueled with ethanoldiesel blend fuel". Fuel, 83 (2004) 20132020.
[12]. He B., Shuai S, Wang J. and He H., "The effect of ethanol blended diesel fuels on emissions from a diesel engine". Atmospheric Environment, 37 (2003) 49654971.
[13]. Sato S., Sugimoto Y., Sakanishi K, Saito I. and Yui S., "Diesel quality and molecular structure of bitumen- derived middle distillates". Fuel, 83 (2004) 19151927.
[14]. Knothe G., "Dependence of biodiesel fuel properties on the structure of fatty acid alkyl esters". Fuel Processing Technology 86 (2005) 10591070.
[15]. Giannelos RN., Sxizas S., Lois E., Zannikos F. and Anastopoulos G., "Physical, chemical and fuel related properties of tomato seed oil for evaluating its direct use in diesel engines". Industrial Crops and Products, 22 (2005) 193199.
[16]. Http://www.iocl.com/print-products_gasoil.htm
[17]. Azam M.M., Waris, A. and N.M. Nahar, "Prospects and potential of fatty acid methyl esters of some non- traditional seed oils for use as biodiesel in India", Biomass and Bioenergy 29 (2005) 293302
[18].http://www.blt.bmlfuw.gv.at/vero/veroeff/0100_Tech nical_performance_of_methyl_esters_e.pdf
[19]. Http://journeytoforever.org/biodiesel_yield2.html
[20]. Http://www. treeoilsindia.com/products.htm AppendixA Specifications of the Engine
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