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Direct Injection Diesel Engine Operated with Propane - DME Blended Fuel
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Abstract
A novel way of using low-cetane-number petroleum gases in a compression ignition (CI) engine is introduced, by directly injecting blends of such fuels with dimethyl ether (DME), a high-cetane-number alternative fuel for low soot emissions. This method both extends advantages of DME and complements its deficiency. Although DME mixes with most hydrocarbon fuels in any ratio, in order to demonstrate the feasibility of the new method and facilitate the analysis, DME-propane blends were investigated in a direct injection CI engine. Some findings of the study are listed.
In the engine operated by DME and propane blends, there was no need for significantly increasing the complexity of the fuel system than that employed in the use of neat DME. For the same reason, this method eliminates or minimizes cumbersome hardware necessary when the said gaseous fuels are separately introduced in CI engines.
When the content of propane was increased, which accordingly increased the heating value of the blend, the start of injection lagged, and self-ignition became sluggish itself, which resulted in a delayed start of heat release.
When the engine load was low, the more the propane content, the higher the specific fuel consumption and the greater the emissions of unburned hydrocarbon. This was interpreted in terms of an over-mixing due to rapid vaporization of propane out of the blend to diffuse and also low combustion chamber temperatures.
Mentioning other emissions with the DME-propane blends, soot emission was negligible, and the specific NOx emission was in general lower than with neat DME, which decreased with an increase in both the propane content and engine load.
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Kajitani, S., Chen, C., Oguma, M., Alam, M. et al., "Direct Injection Diesel Engine Operated with Propane - DME Blended Fuel," SAE Technical Paper 982536, 1998, https://doi.org/10.4271/982536.Also In
References
- Themel T. Jansons M. Campbell S. Rhee KT “Diesel Engine Response to High Fuel-Injection Pressures,” SAE Paper- 982683 1998
- Non-thermal Plasma 1998
- Kajitani S. Chen Z. Konno M. Rhee KT “Engine Performance and Exhaust of Direct-injection Diesel Engine Operated with DME,” SAE Paper- 972973 1997
- Sorenson S. C. Mikkelsen S. E. “Performance and Emissions of a 0.273 Liter Direct Injection Diesel Engine Fueled with Neat Dimethyl Ether,” SAE Paper- 950064 1995
- Fleish T. MacCarthy C. Basu A. Udovich CC. Charbonneau P. Slodowske W. Mikkelsen S. McCandless J. “A New Clean Diesel Technology: Demonstration of ULEV Emissions on a 1994 Model Diesel Engine using Dimethyl Ether,” SAE Paper- 950061 1995
- Verbeek, R. Weide J. V. “Global Assessment of Dimethyl-Ether: Comparison with Other Fuels,” SAE Paper- 971607 1997
- Murayama T. Miyamoto N. Yamada T. Kawashima J. Itow K. “A Method to Improve the Solubility and Combustion Characteristics of Alcohol-Diesel Fuel Blends,” SAE Paper-821 113 1982
- Hansen J.B. Voss B. Joensen F. Sigurdardottir I. D. “A Large Scale Manufacturing of Dimethyl Ether - A New Alternative Diesel Fuel from Natural Gas,” SAE Paper- 950063 1995
- Karpuk M. E. Rowley S. W. “On-board Dimethyl Ether generation to Assist Methanol Engine Cold Starting,” SAE Paper-88 167 1988
- Murayama T. Chikahisha T. Guo J. Miyano M. “Study of a Compression Ignition Methanol Engine with Converted Dimethyl Ether as an Ignition Improver,” SAE paper- 922212 1992
- McCandless J. C. Li S. “Development of a Novel Fuel Injection System (NFIS) for Dimethyl Ether-and Other Clean Alternative Fuels,” SAE Paper- 970220 1997
- Hoekstra R. L. Blarigan P. V. Mulligan N. “NOx Emission and Efficiency of Hydrogen, Natural Gas, and Hydrogen/Natural Gas Blended Fuels,” SAE Paper- 961103 1996
- Newkirk M. S. Bass E. A. “Reactivity Comparison of Exhaust from Heavy-Duty Engines Operating on Gasoline, Diesel, and Alternative Fuels,” SAE Paper- 952442 1995
- Alperstain M. Swim W. Schweitzer P. “Fumigation Kills Smoke,” SAE Trasactions 66 1955 574 595
- Edgar B. L. Dibble R. W. Naegeli D. W. “Autoignition of Dimethyl Ether and Dimethoxy Methane Sprays at High Pressures,” SAE Paper- 971677 1997
- Christense R. Sorenson S. C. Jensen M. G. Hansen K. F. “Engine Operation on Dimethyl Ether in a Naturally Aspirated DI Diesel Engine,” SAE Paper- 971665 1997