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Consolidation of DOC and DPF Functions into a Single Component
Technical Paper
2019-01-0583
ISSN: 0148-7191, e-ISSN: 2688-3627
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Abstract
Diesel Particulate Filters (DPFs) are in common use in many applications for particulate matter (PM) control. Most examples of DPF usage follow a Diesel Oxidation Catalyst (DOC) providing NO2 for passive soot oxidation and fuel burning for active soot regeneration. The DPF is often catalyzed, (CDPF) to enhance passive regeneration by NO2, and to assist active regeneration by burning CO resulting from soot oxidation and any hydrocarbons passing through the DOC.
Some applications with favorable NOx to PM ratios can operate without active regeneration, including applications with only CDPF for cost and packaging space savings. However, eliminating the DOC for applications that require both types of regeneration is difficult, as active regeneration must be accomplished by burning fuel within the CDPF, while adequately burning soot near the front. To meet this challenge, an effort was undertaken to optimize a CDPF catalytic coating architecture to consolidate the DOC and DPF functions into a single “DDPF”.
To accomplish this, a matrix of DDPF samples defined by Platinum Group Metals (PGM) amount, ratio and front / rear location was prepared to investigate the tradeoffs between active and passive regeneration functions normally accomplished by the DOC and (C)DPF as a system. Passive regeneration was evaluated by pre-loading soot, then moving to favorable passive soot oxidation conditions and observing the rate of soot mass decline. Active regeneration performance was determined under steady state conditions during hydrocarbon (HC) injection, and by using a “quench” test protocol where the inlet temperature is lowered during regeneration.
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Citation
Srinivasan, A. and Price, K., "Consolidation of DOC and DPF Functions into a Single Component," SAE Technical Paper 2019-01-0583, 2019, https://doi.org/10.4271/2019-01-0583.Data Sets - Support Documents
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References
- Majewski , W. Diesel Filter Systems https://www.dieselnet.com/tech/dpf_sys.php
- Majewski , W. Filters Regenerated by Fuel Combustion https://www.dieselnet.com/tech/dpf_sys_fuel.php
- Majewski , W. Catalyzed Diesel Filters https://www.dieselnet.com/tech/dpf_cat.php
- Mayer , A. et al. Particulate Filter Retrofit for all Diesel Engines 1997 978-3-8169-2850-8
- Bulte , H. DEUTZ Stage IV Experience - Technology Approach, Market Experience and Outlook for Future Standards Presented at 11th Integer Emissions Summit Europe 2015, June 16-18 Brussels, Belgium
- California Air Resources Board Executive order DE-08-008-03 https://www.arb.ca.gov/diesel/verdev/pdf/executive_orders/de-08-008-03.pdf
- California Air Resources Board Executive order DE-09-004-08 https://www.arb.ca.gov/diesel/verdev/pdf/executive_orders/de-09-004-08.pdf
- California Air Resources Board Executive order DE-04-002-06 https://www.arb.ca.gov/diesel/verdev/pdf/executive_orders/de-04-002-06.pdf
- Jääskeläinen , H and Majewski , W. Heavy Duty Diesel Engines with Aftertreatment https://www.dieselnet.com/tech/engine_heavy-duty_aftertreatment.php
- Shakya , B. , Sukumar , B. , López-De Jesús , Y. , and Markatou , P. The Effect of Pt:Pd Ratio on Heavy-Duty Diesel Oxidation Catalyst Performance: An Experimental and Modeling Study SAE Int. J. Engines 8 3 1271 1282 2015 10.4271/2015-01-1052
- Etheridge , J. , Watling , T. , Izzard , A. , and Paterson , M. The Effect of Pt:Pd Ratio on Light-Duty Diesel Oxidation Catalyst Performance: An Experimental and Modelling Study SAE Int. J. Engines 8 3 1283 1299 2015 10.4271/2015-01-1053
- Kim , C. , Schmid , M. , Schmieg , S. , Tan , J. et al. The Effect of Pt-Pd Ratio on Oxidation Catalysts under Simulated Diesel Exhaust SAE Technical Paper 2011-01-1134 2011 10.4271/2011-01-1134
- Watling , T. , Ahmadinejad , M. , Ţuţuianu , M. , Johansson , Å. et al. Development and Validation of a Pt-Pd Diesel Oxidation Catalyst Model SAE Int. J. Engines 5 3 1420 1442 2012 10.4271/2012-01-1286
- 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 10.4271/2006-01-3442
- Koltsakis , G. , Haralampous , O. , Dardiotis , C. , Samaras , Z. et al. Performance of Catalyzed Particulate Filters without Upstream Oxidation Catalyst SAE Technical Paper 2005-01-0952 2005 10.4271/2005-01-0952
- Punke , A. , Grubert , G. , Li , Y. , Dettling , J. et al. Catalyzed Soot Filters in Close Coupled Position for Passenger Vehicles SAE Technical Paper 2006-01-1091 2006 10.4271/2006-01-1091
- Ummel , D. and Price , K. Performance and Sulfur Effect Evaluation of Tier 4 DOC+SCR Systems for Vanadia, Iron, and Copper SCR SAE Int. J. Engines 7 3 1244 1251 2014 10.4271/2014-01-1519