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Application of Secondary Air Injection for Simultaneously Reducing Converter-In Emissions and Improving Catalyst Light-Off Performance
Technical Paper
2002-01-2803
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Improving catalyst light-off characteristics during cold start and reducing engine-out (more accurately converter-in) emissions prior to catalyst light-off have been regarded as the keys to meeting future stringent emissions regulations. Many technologies and control strategies have been proposed, and some of them have already been incorporated into production, to address these issues. Among these, secondary air injection received a lot of attention. This study was initiated to investigate the thermal and chemical processes associated with secondary air injection inside the exhaust system in order to maximize the simultaneous benefit of improving catalyst light-off performance and reducing converter-in emissions. The effects of several design and operating parameters such as secondary air injection location, exhaust manifold design, spark timing, engine enrichment level, and secondary air flow rate were carefully examined. It was found that proper design and optimization of secondary air injection can significantly improve catalyst light-off characteristics and reduce converter-in HC emissions.
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Borland, M. and Zhao, F., "Application of Secondary Air Injection for Simultaneously Reducing Converter-In Emissions and Improving Catalyst Light-Off Performance," SAE Technical Paper 2002-01-2803, 2002, https://doi.org/10.4271/2002-01-2803.Also In
References
- Adamczyk A. et al. Experimental and modeling evaluations of a vacuum-insulated catalytic converter SAE Technical Paper , No. 1999-01-3678 1999
- Ball D. et al. Ultrathin wall catalyst solutions at similar restriction and precious metal loading SAE Technical Paper , No. 2000-01-1844 2000
- Crane M. et al. Reduced cold-start emissions using rapid exhaust port oxidation (REPO) in a spark ignition engine SAE Technical Paper , No. 970264 1997
- Eade D. et al. Fast light-off of underbody catalysts using exhaust gas ignition (EGI) SAE Technical Paper , No. 952417 1995
- Heimrich M. Air injection to an electrically-heated catalyst for reducing cold-start Benzene emissions from gasoline vehicles SAE Technical Paper , No. 902115 1990
- Heimrich et al. On-board hydrogen generation for rapid catalyst light-off SAE Technical Paper , No. 2000-01-1841 2000
- Hernandez J. A study of the thermochemical conditions in the exhaust manifold using secondary air in a 2.0 L engine SAE Technical Paper , No. 2002-01-1676 2002
- Herrin R. The importance of secondary air mixing in exhaust thermal reactor systems SAE Technical Paper , No. 750174 1975
- Herrin R. Lean thermal reactor performance characteristics - a screening study SAE Technical Paper , No. 760319 1976
- Herrin R. Emissions performance of lean thermal reactors - effects of volume, configuration, and heat loss SAE Technical Paper , No. 780008 1978
- Heywood J. Internal Combustion Engine Fundamentals McGraw-Hill 1988
- Hummel K.-E. et al. Secondary air charger - an innovative system to reduce cold start emissions Proceedings of the 10 th Aachen Colloquium - Vehicle and Engine Technology 2001
- Inoue T. et al. Challenge for the cleanest car - part 2: tailpipe emission reduction JSAE Technical Paper (in Japanese), No. 20005188 2000
- Kadlec R. et al. Limiting factors on steady-state thermal reactor performance SAE Technical Paper , No. 730202 1972
- Kanazawa T. et al. Development of the automotive exhaust hydrocarbon adsorbent SAE Technical Paper , No. 2001-01-0660 2001
- Katashiba H. et al. Development of an effective air-injection system with air for LEV/ULEV SAE Technical Paper , No. 950411 1995
- Kemmler R. et al. Current status and prospects for gasoline engine emission control technology - paving the way for minimal emissions SAE Technical Paper , No. 2000-01-0856 2000
- Kirwan J. et al. Advanced engine management using on-board gasoline partial oxidation reforming for meeting super-ULEV (SULEV) emissions standards SAE Technical Paper , No. 1999-01-2927 1999
- Kochs M. et al. Innovative secondary air injection systems SAE Technical Paper , No. 2001-01-0658 2001
- Koehlen C. et al. Optimization of catalyst light off by investigating motion of the post oxidation flame and its dependence from combustion and manifold geometry SAE Technical Paper , No. 2002-01-0744 2002
- Kollmann K. et al. Secondary air injection with a new developed electrical blower for reduced exhaust emissions SAE Technical Paper , No. 940472 1994
- Lafyatis D. et al. Ambient temperature light-off aftertreatment system for meeting ULEV emissions standards SAE Technical Paper , No. 980421 1998
- Leonard L. Fuel distribution by exhaust gas analysis SAE Technical Paper , No. 376A 1961
- Lord H. et al. Reactor studies for exhaust oxidation rates SAE Technical Paper , No. 730203 1973
- Nishizawa K. et al. Development of new technologies targeting zero emissions for gasoline engines SAE Technical Paper , No. 2000-01-0890 2000
- Nishizawa K. et al. Development of second generation of gasoline PZEV technology SAE Technical Paper , No. 2001-01-1310 2001
- Oakley A. et al. Feasibility study of an online gasoline fractionating system for use in spark-ignition engines SAE Technical Paper , No. 2001-01-1193 2001
- Sim H. et al. Effect of synchronized secondary air injection on exhaust hydrocarbon emission in a spark ignition engine Proc Instn Mech Engrs 215 557 566 2001
- Son G. et al. A study on the practicability of a secondary air injection for emission reduction SAE Technical Paper , No. 1999-01-1504 1999
- Ueno M. et al. A quick warm-up system during engine start-up period using adaptive control of intake air and ignition timing SAE Technical Paper , No. 2000-01-0890 2000
- Yamada T. et al. Technologies for reducing cold-start emissions of V6 engine Proceedings of the JSAE Spring Convention (in Japanese), No. 1997-5 309 312 1997
- Yamamoto T. et al. Reduction of cold-start emissions by combination of new-type catalytic converter and secondary air injection system Proceedings of SAE-Japan Convention (in Japanese), No. 54-00, Paper No. 20005121 17 20 2000
- Yamamoto S. et al. Useful combustion in cylinder during exhaust stroke and in exhaust port with gasoline direct injection Proceedings of COMODIA 187 192 2001
- Yasui Y. et al. Secondary O 2 feedback using prediction and identification type sliding mode control SAE Technical Paper , No. 2000-01-0936 2000