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RESEARCH PAPERS

Combustion Characteristics of Compression Engine Driven by Emulsified Fuel Under Various Fuel Injection Angles

[+] Author and Article Information
M. P. Ashok, C. G. Saravanan

Department of Mechanical Engineering, Faculty of Engineering and Technology,  Annamalai University, Tamil Nadu 608 002, Indiampab97@yahoo.com

J. Energy Resour. Technol 129(4), 325-331 (Apr 30, 2007) (7 pages) doi:10.1115/1.2790994 History: Received May 27, 2006; Revised April 30, 2007

In this present work, the various emulsified fuel ratios of 50D:50E (50% Diesel No. 2: 50% ethanol 100% proof), 60D:40E, and 70D:30E have been prepared. Performance and emission tests are carried out for the emulsified fuel ratios and they have been compared with diesel fuel. The test results show that 50D:50E has given the best result based on the performance and less emission than the other fuel ratios. By keeping the selected fuel 50D:50E, the same performance and emission tests are conducted by varying their injection angles at 18deg, 20deg, 23deg, and 24deg. The outcome shows better performance and less emission by the fuel 50D:50E at 24deg injection angle (IA). Further, ignition delay, maximum heat release, and peak combustion pressure tests have been conducted. These results show that increase in IA decreases the delay period, thus increasing the pressure obtained at the maximum output. Also, Pθ diagram is drawn between crank angle and cylinder pressure. The maximum value is attained by the fuel 50D:50E at 24deg IA. All the tests have been conducted by maintaining the engine speed at 1500rpm. The result shows that 50D:50E ratio fuel has been identified as a good emulsified fuel and its better operation is obtained at 24deg IA based on its best performance and less emissions.

Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

Experimental setup

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Figure 2

Comparison of brake thermal efficiency

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Figure 3

Comparison of specific fuel consumption

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Figure 4

Comparison of smoke density

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Figure 5

Comparison of PM

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Figure 6

Comparison of oxides of nitrogen

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Figure 7

Comparison of the effect of IAs on brake thermal efficiency

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Figure 8

Comparison of the effect of IAs on specific fuel consumption

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Figure 9

Comparison of the effect of IAs on smoke density

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Figure 10

Comparison of the effect of IAs on particulate matter

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Figure 11

Comparison of the effect of IAs on oxides of nitrogen

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Figure 12

Comparison of the effect of IAs on ignition delay

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Figure 13

Comparison of the effect of IAs at maximum heat release

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Comparison of the effect of IAs at peak combustion pressure

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Figure 15

Comparison of the effect of IAs at cylinder pressure

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