The dual fuel concept of diesel engines is gaining popularity because of their ability to use alternative renewable gaseous fuels (natural gas, biogas, producer gas) and liquid fuels (biodiesel, alcohol, and others) simultaneously. The dual fuel mode (DFM) not only reduces the consumption of diesel or substitutes the diesel fuel, but there is an advantage of operating the engine in pure diesel mode (PDM) in case of shortage of gaseous primary fuel. The uses of renewable fuels in such engines have the positive impact on green ecosystem in terms of reduction in NOx and smoke emissions; however, there is the engine derating as performance penalty in comparison to engines operating under PDM. The most influential parameters in DFM engines are the type and flow rate of inducted gaseous fuel, fuel–air equivalence ratio (Φglobal), compression ratio (CR), and injection timing (IT). During the last few decades, the researchers have studied the effect of various parameters to improve the overall performance characteristics (performance, combustion, and emission) of DFM engines. This paper makes an in-depth analysis to unveil the physical characteristics of the crucial parameters of DFM engines with specific reference to the use of biogas with ternary blends (TB) of diesel, biodiesel, and ethanol. The paper addresses the issues on how the gaseous fuel flow rate, preheating of the intake charge, compression ratio, injection timing, and the type of oxygenated fuels dominate the overall performance characteristics.
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June 2019
Review Articles
A Critique on the Research Activities and Potential Benefits of Dual-Fuel Diesel Engines Run on Biogas and Oxygenated Liquid Fuels
Achinta Sarkar,
Achinta Sarkar
Department of Mechanical Engineering,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: achinta.sarkar1@gmail.com
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: achinta.sarkar1@gmail.com
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Ujjwal K. Saha
Ujjwal K. Saha
Professor
Department of Mechanical Engineering,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: saha@iitg.ac.in
Department of Mechanical Engineering,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: saha@iitg.ac.in
Search for other works by this author on:
Achinta Sarkar
Department of Mechanical Engineering,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: achinta.sarkar1@gmail.com
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: achinta.sarkar1@gmail.com
Ujjwal K. Saha
Professor
Department of Mechanical Engineering,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: saha@iitg.ac.in
Department of Mechanical Engineering,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: saha@iitg.ac.in
Manuscript received January 29, 2018; final manuscript received December 1, 2018; published online January 9, 2019. Assoc. Editor: Ajay Agrawal.
J. Eng. Gas Turbines Power. Jun 2019, 141(6): 060801 (26 pages)
Published Online: January 9, 2019
Article history
Received:
January 29, 2018
Revised:
December 1, 2018
Citation
Sarkar, A., and Saha, U. K. (January 9, 2019). "A Critique on the Research Activities and Potential Benefits of Dual-Fuel Diesel Engines Run on Biogas and Oxygenated Liquid Fuels." ASME. J. Eng. Gas Turbines Power. June 2019; 141(6): 060801. https://doi.org/10.1115/1.4042168
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