This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Considerations on Engine Design and Fuelling Technique Effects on Qualitative Combustion in Alcohol Diesel Engines
Annotation ability available
Sector:
Language:
English
Abstract
This paper depicts the main topics of the experimental investigation on alcohol engine development field, aiming at the engineering targets for the emission levels.
The first part of this study was focused on engine design optimization for running on ethanol mixed with poly-ethylene glycol (PEG) as ignition improver. It was shown that some design changes in compression ratio, turbine casing, injector nozzle configuration and exhaust pressure governor (EPG) activation, lead to a better engine thermodynamics and its thermochemistry.
The second objective of this study was the investigation of engine performance and emission levels, when the ignition improver diethyl ether (DEE) would be generated on board via catalytically dehydration of ethanol, and used directly as soluble mixture or separately fumigated.
Both alternatives: ether fumigation technique and dissolved ether in alcohol fuel application were conceptually analyzed, and a stand up system based on DEE fumigation was used to determine the optimum DEE-ethanol ratio at any engine operating range.
The heat release investigation, when the engine was run on neat ethanol and optimum fumigated DEE, has indicated earlier combustion, and very short ignition delay.
Verified possibilities for using DEE as ignition improver, would lead to a proper version of the on board ether reactor design, which would bring to another solution for ethanol fuelled engines.
Recommended Content
Authors
Citation
Gjirja, S., Olsson, E., and Karlström, A., "Considerations on Engine Design and Fuelling Technique Effects on Qualitative Combustion in Alcohol Diesel Engines," SAE Technical Paper 982530, 1998, https://doi.org/10.4271/982530.Also In
References
- Gjirja, S. Olsson, E. Kjellander, N. “The Use of Neat Ethanol in a Volvo Diesel Engine” Thermo & Fluid Dynamics Chalmers University of Technology Gothenburg, Sweden 1991
- Gjirja, S. Olsson, E. “Development of an Ethanol Fuelled Diesel Engine” Proceedings for the Dedicated Conference on Motor Vehicle, 27 th ISATA Aachen, Germany 1994
- Gjirja, S. “Engine Design Optimization for Running on Ethanol with Low Emissions” 1401-1271 KFB, Sweden 1996
- Gjirja, S. OLsson, E. Kalrström, A. Berg, R. Ingemarsson, Å. “Alcohol Engines with Ether as Ignition Improver” Thermo & Fluid Dynamics Chalmers University of Technology Gothenburg, Sweden 1996
- Gjirja, S. Olsson, E. “Ether as Ignition Improver and Its Application on Ethanol Fuelled Engine” Thermo & Fluid Dynamics Chalmers University of Technology Gothenburg, Sweden 1997
- Gjirja, S. “Engine Design Optimization, a Practical Technology for Optimum Performance and Emissions of an Ethanol Fuelled Engine” International Conference Proceedings, 30th ISATA Florence, Italy 1997
- Gjirja, S. Olsson, E. “Ether Fumigation, a New Alternative for Using Neat Alcohol in Diesel Engine” International Symposium on Automotive Technology and Automation, 31th ISATA Dusseldorf, Germany 1998
- Heywood, J. B. “Internal Combustion Engine Fundamentals” McGraw-Hill Book Company 1994
- Norton, J.H. Ross “A Device for Converting Alcohols to Ethers and Methods of Running and of Modifying a Compresion Ignition Engine to Anable Use Therein of Alcohol/Ether” European Patent Office 1981
- Karpuk, M.E. Wright, J.D. Cipolat, D. Jantzen, D.E. “Dimethyl Ether as an Ignition Enhancer for Methanol Fuelled Diesel Engines” SAE Technical Paper No 912420
- Murayama, T. Chikahisa, T. Guo, J. Miyano, M. “A Study of a Compression Ignition Methanol Engine with Converted Dimethyl Ether” SAE Technical Paper No 941908
- Kaiser, F. E. Jr. “Starter Fluid for Internal Combustion Engines”
- “Regulation Concerning the Control of Air Pollution from Heavy Duty Motor Vehicles” Sweden 1994
- Holmer, E. Berg, P. S. Bertilsson, B. I. “The Utilization of Alternative Fuels in a Diesel Engine Using Different Methods” SAE Technical Paper No 800544