This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Simultaneous Reduction of NOX and Soot in a Heavy-Duty Diesel Engine by Instantaneous Mixing of Fuel and Water
Technical Paper
2007-01-0125
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Meeting diesel engine emission standards for heavy-duty vehicles can be achieved by simultaneous injection of fuel and water. An injection system for instantaneous mixing of fuel and water in the combustion chamber has been developed by injecting water in a mixing passage located in the periphery of the fuel spray. The fuel spray is then entrained by water and hot air before it burns.
The experimental work was carried out on a Rapid Compression Machine and on a Komatsu direct-injection heavy-duty diesel engine with a high pressure common rail fuel injection system. It was also supported by Computational Fluid Dynamics simulations of the injection and combustion processes in order to evaluate the effect of water vapor distribution on cylinder temperature and NOX formation. It has been concluded that when the water injection is appropriately timed, the combustion speed is slower and the cylinder temperature lower than in conventional diesel combustion. The result is drastic NOX reduction with a simultaneous decrease of soot emissions. The computational results are in agreement with experimental measurements and provide detailed information on the mixing process.
Recommended Content
Authors
Topic
Citation
Murotani, T., Hattori, K., Sato, E., Chryssakis, C. et al., "Simultaneous Reduction of NOX and Soot in a Heavy-Duty Diesel Engine by Instantaneous Mixing of Fuel and Water," SAE Technical Paper 2007-01-0125, 2007, https://doi.org/10.4271/2007-01-0125.Also In
References
- Hirata Kiminobu Masaki Nobuhiko Ueno Hiroki Akagawa Hisashi “The development of Urea-SCR system for a heavy-duty commercial vehicle.(part1) - For compliance with Japanese NLTR” JSAE Proceedings Oct. 2004 108-04
- Kobayashi Nobuki Fujimura Toshio Tsuzuki Masato Sugiyama Tatsumasa Hirota Shinya “Development of a Simultaneous Reduction System of NOx and Particulate Matter for Diesel Passenger Cars - A Large Scale Field Monitoring” JSAE Proceedings May 2003 25-03
- Nishiyama Toshihiko Emori Nobuhiko Wakamoto Koutarou “Development of Diesel Particulate Filter for Construction Machines” SAE Technical Papers 2003-01-0385
- Yanagihara Hiromichi “Combustion in HCCI DI Diesel Engine” Automotive Technology 55 9 2001
- Ueno Mitsuru Okazaki Tooru Watanabe Kinichirou Wakamoto Koutarou “Komatsu STA 12V140 Water Emulsified Fuel Engine” SAE Technical Papers 2003-01-0078
- Takasaki Koji “Emission Reduction Technology by Water Injection” Journal of the JIME 37 12 2002
- Ikegami Makoto Miwa Kei Inada Mitsuru “Study of Ignition and Combustion of Diesel Spray by Rapid Compression Machine” Transactions of the Japan Society of Mechanical Engineers B-47 413 1981
- Hattori Kazutaka Murotani Taisuke Sato Etsuro “Simultaneous Reduction of NOx and Soot by Instantaneous Mixing of Fuel and Water” JSAE Proceedings May 2005 23-05
- Amsden A.A. “KIVA-3V: A Block-Structured KIVA Program for Engines with Vertical or Canted Valves” Los Alamos National Laboratory LA-13313- MS July 1997
- Reitz, R.D. “Modeling Atomization Processes in High-Pressure Vaporizing Sprays” Atomization and Sprays Technology 3 309 337 1987
- Reitz, R.D. Diwakar, R. “Structure of High-Pressure Fuel Sprays” SAE Technical Paper Series 870598 1987
- Patterson, M.A. Reitz, R.D. “Modeling the Effects of Fuel Spray Characteristics on Diesel Engine Combustion and Emission” SAE 980131 1998
- Hamosfakidis, V. Reitz, R.D. “Optimization of a hydrocarbon fuel ignition model for two single component surrogates of diesel fuel” Combustion and Flame 132 433 450 2003
- Han, Z. Uludogan, A. Hampson, G.J. Reitz, R.D. “Mechanism of soot and NOx emission reduction using multiple-injection in a diesel engine” SAE Technical Paper Series, 960633 1996
- Heywood, J.B. “Internal Combustion Engine Fundamentals” McGraw-Hill 1988