This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Characteristics of Three-way Catalyst during Quickly Start-up Process in a PFI Engine for HEV Application
Technical Paper
2009-01-1325
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The characteristics of three-way-catalyst during engine start process were investigated based on a simulated start/stop test system for HEV application. Although the catalyst has already reached its light-off temperature, the conversion efficiency is poor during engine start process due to the deviation of lambda from stoichiometric. The high concentration hydrocarbon emission spike can be stored by catalyst substrate temporarily, then it is released. This dynamic process decreases the conversion efficiency for the following exhaust hydrocarbon emission. When the initial temperature of catalyst substrate before engine start increased from 150°C to 400°C, the conversion efficiency for both the hydrocarbon and NO are increased. For the engine investigated in this study, in order to convert the hydrocarbon efficiently (conversion efficiency >50%) from the beginning of engine start, the catalyst substrate temperature should be maintained at least at 350°C, as well as the lambda should be controlled at its optimal range throughout the start transient process.
Recommended Content
Citation
Li, L., Yu, S., Dong, G., and Zhang, Y., "Characteristics of Three-way Catalyst during Quickly Start-up Process in a PFI Engine for HEV Application," SAE Technical Paper 2009-01-1325, 2009, https://doi.org/10.4271/2009-01-1325.Also In
References
- Mastuura Moritaka Korematsu Koji Tanaka Junya Fuel Consumption Improvement of Vehicles By Idling Stop SAE World Congress 2004-01-1896 2004
- Prucka Michael James Development of an Engine Stop/Start at Idle System SAE World Congress 2005-01-0069 2005
- Okuda Kazuma Komatsu Yasuyuki Nakahara Youichi Research and Analysis of ISG Belt-drive System for Idling Stop System SAE World Congress 2006-01-1501 2006
- Tamai Goro Hoang Tony Taylor Joel Skaggs Chris Downs Bob Saturn Engine Stop-Start System With An Automatic Transmission SAE World Congress 2001-01-0326 2001
- O-Hori Masae Tanei Katsutoshi Yano Yu-ichi Hayama Kenji Sako Shinji Ezoe Tomohiro Engine Starting System Development By Belt Drive Mechanism SAE World Congress 2002-01-1086 2002
- Ng Henry K. Anderson John A. Duoba Michael J. Larsen Robert P. Engine Start Characteristics of Two Hybrid Electric Vehicles (HEVs)—Honda Insight and Toyota Prius SAE World Congress 2001-01-2492 2001
- Luan Yunfei Henein Naeim A. Contribution of Cold and Hot Start Transients In Engine-out HC Emissions SAE World Congress 982645 1998
- Castaing Brigitte M. Cowart Jim S. Cheng Wai K. Fuel Metering Effect on Hydrocarbon Emissions and Engine Stability During Cranking and Start-up in a Port Fuel Injected Spark Ignition Engine SAE World Congress 2000-01-2836 2000
- YU Shui DONG Guangyu GAO Yuan LI Liguang Transient Characteristics of Combustion and Emissions during Start up at Higher Cranking Speed in a PFI Engine for HEV Application SAE World Congress 2008-01-2420 2008
- Luan Yunfei Henein Naeim A. Tagomori Mauro K. Port-Fuel-Injection Gasoline Engine Cold Start Fuel Calibration SAE World Congress 2006-01-1052 2006
- Chan S H 2001 A Practical Approach for Rapid Catalyst Light-off by Means of Strategic Engine Control Journal of Automobile Engineering 215 5
- Schweinsberg Alexander Schenck zu Klenk Martin Degen Alf Engine-Independent Exhaust Gas Aftertreatment Using a Burner Heated Catalyst SAE World Congress 2006-01-3401 2006
- Yamamoto S. Matsushita K. Etoh S. Takaya M. In-Line Hydrocarbon (HC) Adsorber System for Reducing Cold-Start Emissions SAE World Congress 2000-01-0892 2000
- Sano Keisuke Kawai Takashi Yoshizaki Satoshi Iwamoto Yasunori HC Adsorber System for SULEVs of Large Volume Displacement SAE World Congress 2007-01-0929 2007
- Ueda Katsunori Kaiahara Kuniaki Krose Kazuteru Ando Hiromitsu Idling Stop System Coupled With Quick Start Features of Gasoline Direct Injection SAE World Congress 2001-01-0545 2001
- Tagliaferri Sergio Koppel Rene A. Baiker Alfons 1998 Influence of Rhodium- and Ceria-promotion of Automotive Palladium Catalyst on its Catalytic Behavior under Steady-state and Dynamic operation Applied Catalysis B: Environmental 15
- Padeste L Baiker A. 1994 Three-way Catalysts in a Hybrid Drive System. 1. Experimental Study of Dynamic Behavior Industrial and Engineering Chemistry Research 33
- Jackson Richard A. Peyton Jones James C. Pan Jinfeng Roberts J.Brian Childs Peter R.N. Chemical Aspects of the Dynamic Performance of a Three-Way Catalyst SAE World Congress 1999-01-0312 1999
- Kataoka Kenji Tsuji Kimitoshi Crankshaft Positioning Utilizing Compression Force and Fast Starting with Combustion Assist for Indirect Injection Engine SAE World Congress 2005-01-1166 2005
- Fattic Gerald T. Walters James E. Gunawan Fani S. Cold Starting Performance of a 42-Volt Integrated Starter Generator System SAE World Congress 2002-01-0523 2002