This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigations on Chemical Ageing of Diesel Oxidation Catalysts and Coated Diesel Particulate Filters
Technical Paper
2010-01-1212
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
For medium- and heavy-duty diesel engines, the development of
new catalyst technologies and particulate filters is necessary to
fulfill increasingly stringent emission regulations. An important
aspect is the durability of the after-treatment system and
therefore its efficiency over lifetime. Lubrication oil additives
contain components such as phosphorous or zinc to ensure engine
durability. Diesel oxidation catalyst (DOC) and coated diesel
particulate filter (cDPF) catalytic coatings are negatively
influenced by contamination on the surface with these components
(chemical ageing). The components have a negative impact on the
exhaust after-treatment systems performance. Additionally the cDPF
is filled with oil ash.
Engine tests are conducted to analyze the effect of lubrication
oil additives on after-treatment system performance. In one study,
lubrication oil with increased sulfur ash content is used. In
another study, the same liquid oil is additionally sprayed directly
into the after-treatment system. The performance of both
after-treatment systems is measured at regular intervals during
testing. The results show that the NO₂ make on DOC and cDPF
deteriorates severely due to chemical and thermal ageing. However
with increased operation time, the effects stabilize. In addition
to the test bench investigations, the accumulation of poisoning
elements on the washcoat surface is analyzed using XRF analysis.
Ash accumulation in the cDPF is studied and ash composition is
analyzed. Selected results of this study are compared to results of
measurements on durability run aged after-treatment systems from
EPA-07 development.
Recommended Content
Authors
Topic
Citation
Lanzerath, P., Traebert, A., Massner, A., and Gaertner, U., "Investigations on Chemical Ageing of Diesel Oxidation Catalysts and Coated Diesel Particulate Filters," SAE Technical Paper 2010-01-1212, 2010, https://doi.org/10.4271/2010-01-1212.Also In
References
- Guethenke, A. Lanzerath, P. Massner, A. Gaertner, U. “Thermal Aging of Catalysts in Combined After-treatment Systems,” SAE Technical Paper 2009-01-0623 2009
- Heck R. M. Farrauto R. J. Catalytic Air Pollution Control Van Nostrand Reinhold New York 1995
- Kröger V. Hietikko M. Angove D. French D. Lassi U. Suopanki A. Laitinen R. Keiski R.L. Effect of phosphorus poisoning on catalytic activity of diesel exhaust gas catalyst components containing oxide and Pt Topics in Catalysis 42-43 May 2007
- Moldovan M. Rauch S. Morrison G. M. Gomez M. Palacios M. A. Impact of ageing on the distribution of platinum group elements and catalyst poisoning elements in automobile catalysts Surf. Interface Anal. 2003 35 354 359
- Twigg, M.V. Collins, N.R. Morris, D. O'Connell, T.J. et al. “The Effect of Phosphorus and Boron Lubricant Oil Additives on Catalyst and Engine Durability,” SAE Technical Paper 2004-01-1888 2004
- Xu, L. McCabe, R.W. Hubbard, C.P. Dennis, R.M. et al. “Impact of Oil Consumption Modes and Pathways on Oil-Derived Catalyst Deposits,” SAE Technical Paper 2007-01-1072 2007
- Colbourne D. Leonhardt H. Machatschek F. New Engine Oil Technology for Low Emission Heavy Duty Diesel Engines Haus der Technik Fachbuch 97 2008 306 314
- Hertzberg A. Moehrmann W. Mueller-Lunz S. Pelz N. Wenninger G. Givens W. A. Buck W. H. Jackson A. Kaldor A. Evaluation of Lubricant Compatibiliy with Diesel After-Treatment Devices International Colloquium Tribology 14 2004 1283 1297
- Kubsh J. Three-Way Catalyst Deactivation Associated With Oil-Derived Poisons Engelhard Corporation, Environmental Technologies Group Iselin New Jersey 2002
- Eaton, S.J. Bunting, B.G. Toops, T.J. Nguyen, K. “The Roles of Phosphorus and Soot on the Deactivation of Diesel Oxidation Catalysts,” SAE Technical Paper 2009-01-0628 2009
- Gärtner U. Koch T. Dittler A. Wohin mit der Asche? - Grundlagen der Partikelfiltertechnik im Nutzfahrzeug 8. Dresdner Motorenkolloquium Juni 2009