This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Influence of Diesel Post Injection Timing on HC Emissions and Catalytic Oxidation Performance
Technical Paper
2006-01-3442
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
For diesel emission control systems containing a Diesel Oxidation Catalyst (DOC) and a Catalyzed Soot Filter (CSF) the DOC is used to oxidize the additional fuel injected into the cylinder and/or the exhaust pipe for the purpose of increasing the CSF inlet temperature during the soot regeneration. Hydrocarbon (HC) oxidation performance of the DOC is affected by HC species as well as a catalyst design, i.e., precious metal species, support materials and additives. How engine-out HC species vary as a function of fuel supply conditions is not well understood. In addition, the relationship between catalyst design and oxidation activity of different hydrocarbon species requires further study.
In this study, diesel fuel was supplied by in-cylinder, post injection and exhaust HC species were measured by a gas chromatograph-mass spectrometry (GC-MS) and a gas analyzer. The post injection timing was set to either 73°, 88° or 98° ATDC(after top dead center). The DOC used was either Pt or Pt/Pd based and oxidation characteristics for each HC species were compared. To mimic the CSF regeneration conditions main/post ratio and mass flow rate of intake air were adjusted to create a 300°C inlet and a 550°C DOC outlet condition. Many more HC species were detected with compared to without the post injection. With the post injection, higher concentration of alkane (C9-C20), alkene (C2-C15), Formaldehyde (HCHO) and Acetaldehyde (CH3CHO), were observed compared to without post injection. The Pt/Pd catalyst showed higher HC oxidation performance than the Pt catalyst when the catalyst length was long, but the Pt catalyst showed better performance when the catalyst was short. The Pt/Pd catalyst was assumed to have higher HC cracking functionality compared to the Pt catalyst.
Recommended Content
Authors
Citation
Yamamoto, K., Takada, K., Kusaka, J., Kanno, Y. et al., "Influence of Diesel Post Injection Timing on HC Emissions and Catalytic Oxidation Performance," SAE Technical Paper 2006-01-3442, 2006, https://doi.org/10.4271/2006-01-3442.Also In
References
- Koebel M. Elsener M. Kleemann M. “Urea-SCR: a promising technique to reduce NO x emissions from automotive diesel engines” Catalysis Today 59 3-4 25 June 2000 335 345
- Jegurim M. Tschamber V. Brilhac J.F. Ehrburger P. “Oxidation mechanism of carbon black by NO2: Effect of water vapour Fuel 84 14-15 October 2005 1949 1956
- Lee Jin-ha Kwon Choong-II Kim Seok-Jae Yeo Gwon-Koo Hyundai Motor Company “Control of Diesel Catalyzed Particulate Filter System I(The CPF System Influence Assessmen tAccording to a Regeneration Condition)”
- Yamaguchi S. Fujii S. Kai R. Miyazaki M. Miyairi Y. Miwa S. NGK Insulators, Ltd. Busch P. NGK “Automotive Ceramics USA, Inc Design Optimization of Wall Flow Type Catalyzed Cordierite Particulate Filter for Heavy Duty Diesel”
- Mayer A. TTM Nöthiger P. LogLink Andreassen L. Liqtech Kany S. TSH Richards P. OCTEL Andreoni T. CARB Sem T. ThermoKing “Retrofitting TRU-Diesel Engines with DPF-Systems Using FBC and Intake Throttling for Active Regeneration”
- Nakane T. Ikeda M. Hori M. ICT Co. Ltd. Bailey O. IT Inc. Mussmann L. Umicore AG “Investigation of the Aging Behavior of Oxidation Catalysts Developed for Active DPF Regeneration Systems 2005-01-1759”
- Fayard Jean-Claude COMELA Joubert Emmanuel Seguelong Thierry Aaqius & Aaqius “A New Active DPF System for “Stop & Go” Duty” Cycle Vehicles: Durability and Improvements
- Nakane T. Ikeda M. Hori M. ICT Co. Ltd. Bailey O. IT Inc. Mussmann L. Umicore AG “Investigation of the Aging Behavior of Oxidation Catalysts Developed for Active DPF Regeneration Systems”
- Nagata Makoto “Study of soot regeneration uniformity on DOC+CSF system” CDAJ User's Meeting 2005
- Comes Pau Gonzalez-Flesca Norbert Grimalt Joan O. “Langmurian parameters for Tenax GC adsorption of airborne hydrocarbons and oxygenated compounds” Journal of Chromatography A 816 2 14 August 1998 195 200
- Siegl Walter O. Hammerle Robert H. Herrmann Heiko M. Wenclawiak Bernd W. Luers-Jongen B. “Organic emissions profile for a light-duty dieselvehicle” Atmospheric Environment 33 5 February 1999 797 805
- Schmitz Thomas Hassel Dieter Weber Franz-Josef “Determination of VOC-components in the exhaust of gasoline and diesel passenger cars” Atmospheric Environment 34 27 2000 4639 4647
- Zielinska Barbara Sagebiel John C. Harshfield Gregory Gertler Alan W. Pierson William R. ”Volatile organic compounds up to C20 emitted from motor vehicles; measurement methods” Atmospheric Environment 30 12 June 1996 2269 2286
- Morlang A. Neuhausen U. Klementiev K.V. Schütze F.-W. Miehe G. Fuess H. Lox E.S. “Bimetallic Pt/Pd diesel oxidation catalysts: Structural characterisation and catalytic behaviour” Applied Catalysis B: Environmental 60 3-4 3 October 2005 191 199
- Ikeda Masanori Fujita Takashi Uno Takahiro Hori Masao “Investigation of the aging behavior of a system with active DPF regeneration-Durability improvement of DOCs for high temperature applications-” JSAE, 20045735
- Shie Je-Lueng Chang Ching-Yuan Chen Jia-Hao Tsai Wen-Tien Chen Yi-Hung Chiou Chyow-San Chang Chiung-Fen “Catalytic oxidation of naphthalene using a Pt/Al 2 O 3 catalyst” Applied Catalysis B: Environmental 58 3-4 28 June 2005 289 297
- Patterson Michael J. Angove Dennys E. Cant Noel W. “The effect of carbon monoxide on the oxidation of four C 6 to C 8 hydrocarbons over platinum, palladium and rhodium” Applied Catalysis B: Environmental 26 1 10 April 2000 47 57
- Veser Götz Ziauddin Murtaza Schmidt Lanny D. “Ignition in alkane oxidation on noble-metal catalysts” Catalysis Today 47 1-4 1 January 1999 219 228
- Krummenacher Jakob J. West Kevin N. Schmidt Lanny D. “Catalytic partial oxidation of higher hydrocarbons at millisecond contact times: decane, hexadecane, and diesel fuel” Journal of Catalysis” 215 2 25 April 2003 332 343
- Kim Hyoung Sik Kim Tae Won Koh Hyoung Lim Lee Seo Ho Min Byoung Ryul “Complete benzene oxidation over Pt-Pd bimetal catalyst supported on y-alumina: influence of Pt-Pd ratio on the catalytic activity” Applied Catalysis A: General 280 2 8 March 2005 125 131
- Lyon Richard K. Cole Jerald A. “A reexamination of the RapreNO x process” Combustion and Flame 82 3-4 December 1990 435 443
- Hori Morio Matsunaga Naoki Marinov Nick Pitz Willam Westbrook Charles “AN EXPERIMENTAL AND KINETIC CALCULATION OF THE PROMOTION EFFECT OF HYDROCARBONS ON THE NO-NO 2 CONVERSION IN A FLOW REACTOR” Twenty-seventh Symposium(International) on Combustion/The combustion institute 1998 389 396
- Verdier S. Rohart E. Larcher O. Harle V. Allain M. RHODIA Research and DevelopmentCedex France RHODIA Electronics and CatalysisCedex France “Innovative Materials for Diesel Oxidation Catalysts,with High Durability and Early Light-Off”
- Hirasawa Yoshiro Yasushi Tanaka Corp Banno Yasuyuki Nagata Makoto ”Development of Methane Oxidation Catalyst and Its Mechanism” SAE paper 2005-01-1098