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EFFECT OF SOYBEAN OIL BIOFUEL BLENDING ON THE PERFORMANCE AND EMISSIONS OF DIESEL ENGINE USING DIESEL-RK SOFTWARE

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Author(s): Mohamed F. Al-Dawody, | S.K. Bhatti

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 3;
Issue: 6;
Start page: 4539;
Date: 2011;
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Keywords: diesel engine | biodiesel | combustion | thermodynamic modeling | engine performance & emissions | Soybean oil methyl ester.

ABSTRACT
The scope of the technology is to provide utility and comfort with no damage to the user or to the surroundings. For many years now, petroleum products and other fossil fuels have given us utility andcomfort in a variety of areas, but causes environmental problems which threaten wild and human life. In this study, the performance and emissions of single cylinder, four stroke, direct injection diesel engine operating on diesel oil and different Soybean Methyl Ester (SME) blends have been investigated theoretically using thesimulation software Diesel-RK. Based on the computed modeling results it’s found that 41.3 %, 53.2 % & 62.6 % reduction in the Bosch smoke number obtained with B20% SME, B40 % SME and B100% SME respectively, compared to pure diesel operation. In addition a reduction in PM emissions is observed 47.2%, 60 % & 68% for the B20 % SME, B40 % SME, and B 100% SME respectively. On the average basis there is a reduction in the thermal efficiency, power, and SFC, for all SME blends by 2%, 3%, and 12% respectively compared to pure diesel fuel. All blending of SME produce higher NOx emissions more than 28% compared with pure diesel fuel. A parametric study of retarding injection timing, varying engine speed and compression ratio effects has been performed. Its observed that retarding the injection timing can reduce the increase in the NOx emissions to great extent. Among all tested fuels its noticed that B20% SME was the best tested fuel which gave the same performance results with good reduction in emissions as compared to pure diesel operation. A very good agreement was obtained between the results and the available theoretical and experimental results of other researchers.
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