This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigation Into Partially Premixed Combustion in a Light-Duty Diesel Engine Based on Different Injection Strategies
Technical Paper
2014-01-2681
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The performance of Partially Premixed Combustion (PPC) relies heavily on the proper mixing between the injected fuel and the in-cylinder gas mixture. This pre-mixing aims to eliminate over-rich regions where the mixture forms soot, and at the same time to avoid the NOX formation region by lowering the combustion temperature by introduction of a large amount of EGR The main effort of this paper focuses on investigating the characteristic of PPC combustion and a suitable injection strategy for achieving the PPC combustion mode. Two injection strategies (i.e. double and single injection) were investigated on a four-cylinder heavy-duty diesel engine operating at low, medium and high load conditions. Injection timing, injection pressure, the pilot-main interval, the pilot injected fuel mass, the ratio between the two pilot injection pulses for the double pilot injection as well as the comparison of single injection mode and multi-injection mode in acquiring PPC was swept to study the combustion behavior in terms of combustion heat release, combustion phase, emissions and different efficiencies. Finally a comparison between single and multi-injection strategies was performed. The experimental results indicated that the premixed and low temperature combustion are the key factors to reduce particulate matter (PM) and nitric oxides (NOX) simultaneously. The early and late injection timing and optimized double injection strategy should be preferred for PPC as it offers good combustion controllability and combustion performance (i.e. low emissions and high efficiency) while keeping the combustion noise at very low levels. Single injection strategy aims at achieving PCI combustion by increasing ignition retardation and for the same objective multi-injection strategy fulfills that by changing pilot-main interval and pilot fuel mass in order to control main combustion. Compared to conventional diesel combustion, in low temperature premixed combustion mode, the peak cylinder pressure and peak pressure rise rate significantly decreased and NOX and smoke emissions can be substantially improved but CO emission became worse. Compared with single injection strategy, multi-injection strategy targets at PCI combustion with lower cylinder pressure, peak pressure rise rate and considerably low NOX emission by improving mixing of fuel and air.
Recommended Content
Authors
Topic
Citation
Bao, Z., Cheng, X., Qiu, L., and Luan, X., "Investigation Into Partially Premixed Combustion in a Light-Duty Diesel Engine Based on Different Injection Strategies," SAE Technical Paper 2014-01-2681, 2014, https://doi.org/10.4271/2014-01-2681.Also In
References
- Singh , S. 2006 Experimental investigation of multi-mode diesel engine combustion and validation of advanced combustion models Order No. 3234663 The University of Wisconsin Madison ProQuest Dissertations and Theses 338 338 http://search.proquest.com/docview/3049757537accountid=11524
- Akihama , K. , Takatori , Y. , Inagaki , K. , Sasaki , S. et al. Mechanism of the Smokeless Rich Diesel Combustion by Reducing Temperature SAE Technical Paper 2001-01-0655 2001 10.4271/2001-01-0655
- Hasegawa , R. and Yanagihara , H. HCCI Combustion in DI Diesel Engine SAE Technical Paper 2003-01-0745 2003 10.4271/2003-01-0745
- Helmantel , A. and Denbratt , I. HCCI Operation of a Passenger Car Common Rail DI Diesel Engine With Early Injection of Conventional Diesel Fuel SAE Technical Paper 2004-01-0935 2004 10.4271/2004-01-0935
- Okude , K. , Mori , K. , Shiino , S. , and Moriya , T. Premixed Compression Ignition (PCI) Combustion for Simultaneous Reduction of NO X and Soot in Diesel Engine SAE Technical Paper 2004-01-1907 2004 10.4271/2004-01-1907
- Noehre , C. , Andersson , M. , Johansson , B. , and Hultqvist , A. Characterization of Partially Premixed Combustion SAE Technical Paper 2006-01-3412 2006 10.4271/2006-01-3412
- Ogawa , H. , Miyamoto , N. , Shimizu , H. , and Kido , S. Characteristics of Diesel Combustion in Low Oxygen Mixtures with Ultra-High EGR SAE Technical Paper 2006-01-1147 2006 10.4271/2006-01-1147
- Kawashima , Jun-ichi , Ogawa Hiroshi , and Tsuru Yoshiyuki Research on a Variable Swirl Intake Port for 4-Valve, High-Speed Di Diesel Engines Development 2002 1998 10 25
- Kimura , S. , Aoki , O. , Ogawa , H. , Muranaka , S. et al. New Combustion Concept for Ultra-Clean and High-Efficiency Small DI Diesel Engines SAE Technical Paper 1999-01-3681 1999 10.4271/1999-01-3681
- Liu , Y. and Reitz , R. Optimizing HSDI Diesel Combustion and Emissions Using Multiple Injection Strategies SAE Technical Paper 2005-01-0212 2005 10.4271/2005-01-0212
- Musculus M P B , Miles P C , Pickett L M. Conceptual models for partially premixed low-temperature diesel combustion[J] Progress in Energy and Combustion Science 2013 39 2 246 283
- Kook , S. , Bae , C. , Miles , P. , Choi , D. et al. The Influence of Charge Dilution and Injection Timing on Low-Temperature Diesel Combustion and Emissions SAE Technical Paper 2005-01-3837 2005 10.4271/2005-01-3837
- Hardy , W. and Reitz , R. A Study of the Effects of High EGR, High Equivalence Ratio, and Mixing Time on Emissions Levels in a Heavy-Duty Diesel Engine for PCCI Combustion SAE Technical Paper 2006-01-0026 2006 10.4271/2006-01-0026
- Klingbeil , A. , Juneja , H. , Ra , Y. , and Reitz , R. Premixed Diesel Combustion Analysis in a Heavy-Duty Diesel Engine SAE Technical Paper 2003-01-0341 2003 10.4271/2003-01-0341
- Okude , K. , Mori , K. , Shiino , S. , Yamada , K. et al. Effects of Multiple Injections on Diesel Emission and Combustion Characteristics SAE Technical Paper 2007-01-4178 2007 10.4271/2007-01-4178
- Ehleskog , R. , Ochoterena , R. , and Andersson , S. Effects of Multiple Injections on Engine-Out Emission Levels Including Particulate Mass from an HSDI Diesel Engine SAE Technical Paper 2007-01-0910 2007 10.4271/2007-01-0910
- Yun , H. , Sellnau , M. , Milovanovic , N. , and Zuelch , S. Development of Premixed Low-Temperature Diesel Combustion in a HSDI Diesel Engine SAE Technical Paper 2008-01-0639 2008 10.4271/2008-01-0639
- Okude , K. , Mori , K. , Shiino , S. , and Moriya , T. Premixed Compression Ignition (PCI) Combustion for Simultaneous Reduction of NO X and Soot in Diesel Engine SAE Technical Paper 2004-01-1907 2004 10.4271/2004-01-1907
- Mueller , C. , Martin , G. , Briggs , T. , and Duffy , K. An Experimental Investigation of In-Cylinder Processes Under Dual-Injection Conditions in a DI Diesel Engine SAE Technical Paper 2004-01-1843 2004 10.4271/2004-01-1843
- Okude , K. , Mori , K. , Shiino , S. , Yamada , K. et al. Effects of Multiple Injections on Diesel Emission and Combustion Characteristics SAE Technical Paper 2007-01-4178 2007 10.4271/2007-01-4178
- Comparisons of Short-Prefix Based Channel Estimation in Single-Carrier Communication Systems Proceedings of the 9th International Conference on Wireless Communications, Networking and Mobile Computing(WICOM 2013) Li Huilei , Fan Shiwen , Gong Lisha , Cheng Guobing and Li Shaoqian