This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Stoichiometric Combustion in a HSDI Diesel Engine to Allow Use of a Three-way Exhaust Catalyst
Technical Paper
2006-01-1148
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The objectives of this study were 1) to evaluate the characteristics of rich diesel combustion near the stoichiometric operating condition, 2) to explore the possibility of stoichiometric operation of a diesel engine in order to allow use of a three-way exhaust after-treatment catalyst, and 3) to achieve practical operation ranges with acceptable fuel economy impacts. Boost pressure, EGR rate, intake air temperature, fuel mass injected, and injection timing variations were investigated to evaluate diesel stoichiometric combustion characteristics in a single-cylinder high-speed direct injection (HSDI) diesel engine. Stoichiometric operation in the Premixed Charge Compression Ignition (PCCI) combustion regime and standard diesel combustion were examined to investigate the characteristics of rich combustion.
The results indicate that diesel stoichiometric operation can be achieved with minor fuel economy and soot impact. The fuel consumption at stoichiometric operation increases about 7% compared to the best fuel economy case of standard diesel combustion. However, NOx emissions decrease to around 0.1 g/kW-hr due to oxygen deficiency at stoichiometric condition. Variations of injection timing, intake air temperature, EGR, and boost pressure did not affect the fuel consumption significantly. In general, emissions and fuel consumption were dependent strongly on the equivalence ratio under high EGR and rich operating conditions. Extending the operating range will be the subject of future studies.
Recommended Content
Authors
Topic
Citation
Lee, S., Gonzalez D., M., and Reitz, R., "Stoichiometric Combustion in a HSDI Diesel Engine to Allow Use of a Three-way Exhaust Catalyst," SAE Technical Paper 2006-01-1148, 2006, https://doi.org/10.4271/2006-01-1148.Also In
References
- Lechner, G.A. Jacobs, T.J. Chryssakis, C.A. Assanis, D.N. Siewert, R.M. “Evaluation of Narrow Spray Cone Angle, Advanced Injection Timing Strategy to Achieve Partially Premixed Compression Ignition Combustion in a Diesel Engine,” SAE 2005-01-0167 2005
- Kanda, T. Hakozaki, T. Uchimoto, T. Hatano, J. Kitayama, N Sono, H. “PCCI Operation with Early Injection of conventional Diesel Fuel,” SAE 2005-01-0378 2005
- Lee, S. Reitz, R.D. “Spray Targeting to Minimize Soot and CO Formation in Premixed Charge Compression Ignition (PCCI) Combustion with a HSDI Diesel Engine,” SAE 2006-01-0918 2006
- Boyarski, N. J. Dept. of Mechanical Engineering, University of Wisconsin Madison 2004
- Okude, K. Mori, K. Shiino, S. Moriya, T. “Premixed Compression Ignition (PCI) Combustion for Simultaneous Reduction of NOx and Soot in Diesel Engine,” SAE 2004-01-1907 2004
- Sluder, C.S. Wagner, R.M. Lewis, S.A. Storey, J.M.E. “Exhaust Chemistry of Low-NOx, Low-PM Diesel Combustion,” SAE 2004-01-0114 2004
- Wagner, R.M. Green J.B. Jr. Dam, T.Q. Edwards, K.D. Storey, J.M. “Simultaneous Low Engine-Out NOx and Particulate Matter with Highly Diluted Diesel Combustion,” SAE 2003-01-0262 2003
- Akihama, K. Takatori, Y. Inagaki, K. Sasaki, S. Dean, A.M. “Mechanism of the Smokeless Rich Diesel Combustion by Reducing Temperature,” SAE 2001-01-0655 2001
- Jacobs, T.J. Bohac, S.V. Assanis, D.N. Szymkowicz, P.G. “Lean and Rich Premixed Compression Ignition Combustion in a Light-Duty Diesel Engine,” SAE 2005-01-0166 2005
- Helmantel, A. Gustavsson, J. Denbratt, I. “Operation of DI Diesel Engine With Variable Effective Compression Ratio in HCCI and Conventional Diesel Mode,” SAE 2005-01-0177 2005
- Tatur, D.T. Thornton, M. “Development of a Diesel Passenger Car Meeting Tier 2 Emissions Levels,” SAE 2004-01-0581 2004
- Boyarski, N.J. Reitz, R.D. “Premixed Compression Ignition (PCI) Combustion with Modeling-Generated Piston Bowl Geomtry in a Diesel Engine,” SAE 2006-01-0198 2006
- Walter, B. Gatellier, B. “Development of the High Power NADI Concept Using Dual Mode Diesel Combustion to Achieve Zero NOx and Particulate Emissions,” SAE 2002-01-1744 2002
- Heywood, J. B. “Internal Combustion Engine Fundamentals,” McGraw Hill 1988
- Kimura, S. Ogawa, H. Matsui, Y. Enomoto, Y. “An Experimental Analysis of Low-Temperature and Premixed Combustion for Simultaneous Reduction of NOx and Particulate Emissions in Direct Injection Diesel Engines,” International Journal of Engine Research 3 4 2002
- Miles, P. C. Choi, D. Pickett, L. M. Kook, S. Bae, C. “The Influence of Charge Dilution and Injection Timing on Low-Temperature Diesel Combustion and Emissions,” SAE 2005-01-3837 2005
- Ladommatos, N. Abdelhalim, S.M. Zhao, H. Hu, Z. “The Dilution, Chemical, and Thermal Effects of Exhaust Gas Recirculation on Diesel Engine Emissions - Part 2: Effect of Carbon Dioxide,” SAE 961167 1996
- Ladommatos, N. Abdelhalim, S.M. Zhao, H. Hu, Z. “The Dilution, Chemical, and Thermal Effects of Exhaust Gas Recirculation on Diesel Engine Emissions - Part 3: Effect of Water Vapor,” SAE 971659 1997
- Ladommatos, N. Abdelhalim, S.M. Zhao, H. Hu, Z. “The Dilution, Chemical, and Thermal Effects of Exhaust Gas Recirculation on Diesel Engine Emissions - Part 4: Effect of Carbon Dioxide and Water Vapor,” SAE 971659 1997