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Thermal Management of a Four-way Catalyst System with Alternative Combustions for Achieving Future Emissions Standard
Technical Paper
2007-24-0103
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Four-way catalyst system consisting of diesel oxidation catalyst (DOC), diesel particulate filter (DPF) and lean NOx trap (LNT) with alternative combustion such as low temperature combustion (LTC) and premixed controlled compression ignition (PCCI) is one of the effective ways to achieve the US Tier 2 Bin 5 and future European emissions for light duty diesel vehicles. However, thermal responses such as substrate temperature and temperature gradient of each catalyst component in the exhaust treatment system are different under different combustion modes and operation conditions. One exhaust treatment component's performance or durability can not be sacrificed for the sake of another. In this paper, thermal management strategies for exhaust treatment component temperature and temperature gradient by controlling lean and rich conditions of low temperature combustions as well as premixed controlled combustion, EGR rate and exhaust flow are demonstrated on a Renault G9T600 engine. Results showing improved overall exhaust treatment system performance by optimized temperature control and reduced temperature gradient are discussed.
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Huang, Y. and Lu, Q., "Thermal Management of a Four-way Catalyst System with Alternative Combustions for Achieving Future Emissions Standard," SAE Technical Paper 2007-24-0103, 2007, https://doi.org/10.4271/2007-24-0103.Also In
References
- Webb Cynthia C. Weber Phillip A. Thornton Matthew “Achieving Tier 2 Bin 5 Emission Levels with a Medium Duty Diesel Pick-Up and a NOx Adsorber, Diesel Particulate Filter Emission System - NOx Adsorber Management” SAE Paper 2004-01-0585
- Huang Yiqun Neely Gary D. Sasaki Shizuo Leet Jeffrey A. Stewart Daniel W. “US Tier II Emissions Solutions for Light-Duty Diesel Vehicles” JSAE Transactions 37 3 2006
- Sasaki S. Ito T. Iguchi S. 2000 ”Smoke-less Rich Combustion by Low Temperature Oxidation in Diesel Engines” 9 th Aachen Colloquium 2000
- Sasaki S. Kobayashi N. Hashimoto Y. Tanaka T. Hirota S. 2002 “A New Combustion Concept for Clean Diesel System with DPNR” MTZ 11/2002 63 November 2002
- Sasaki S. Yoshizaki K. Goto M. 2003 “Smokeless Low Temperature Diesel Combustion Concept (Third Report)” JSAE Transaction 34 1 January 2003
- Li Jianwen et al “Durability Evaluation of an Integrated Diesel NOx Adsorber A/T Subsystem at Light-Duty Operation” 2004 DEER Conference Presentation
- US Patent: 7,197,867 “Method for the Simultaneous Desulfation of a Lean NOx Trap and Regeneration of a Diesel Particulate Filter”
- US Patent Application: 20060096281 “Exhaust System and Method for Controlling Exhaust Gas Flow and Temperature Through Regenerable Exhaust Gas Treatment Devices”