This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Fuel Sulfur Effects on a Medium-Duty Diesel Pick-Up with a NOX Adsorber, Diesel Particle Filter Emissions Control System: 2000-Hour Aging Results
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2006 by SAE International in United States
Annotation ability available
Increasing fuel costs and the desire for reduced dependence on foreign oil have brought the diesel engine to the forefront of future medium-duty vehicle applications in the United States due to its higher thermal efficiency and superior durability. One of the obstacles to the increased use of diesel engines in this platform is the Tier 2 emission standards. In order to succeed, diesel vehicles must comply with emissions standards while maintaining their excellent fuel economy. The availability of technologies-such as common rail fuel injection systems, low-sulfur diesel fuel, oxides of nitrogen (NOX) adsorber catalysts or NACs, and diesel particle filters (DPFs)-allows for the development of powertrain systems that have the potential to comply with these future requirements. In support of this, the U.S. Department of Energy (DOE) has engaged in several test projects under the Advanced Petroleum Based Fuels-Diesel Emission Control (APBF-DEC) activity [1, 2, 3, 4, 5]. Three of the APBF-DEC projects evaluated the sulfur tolerance of a NAC/DPF system and the full useful life implications of NAC desulferization. The test bed for one project in this activity is a 2500 series Chevrolet Silverado equipped with a 6.6L Duramax diesel engine certified to 2002 model year (MY) federal heavy-duty and 2002 MY California medium-duty emission standards.
While NAC systems have demonstrated extremely high levels of NOX reduction in steady-state laboratory evaluations, the application of a NAC system to an actual transient engine has not been demonstrated. Such an application requires the development of an integrated engine/emissions management system [6, 7, 8, 9, 10, 11, 12, 13, 14, 15]. Two previous papers detailed the thermal and NOX adsorber management aspects of a system applied to the project test bed [1, 2]. The final control strategies applied to this project achieved over 98% reductions in tailpipe NOX mass emission over the hot-start Urban Dynamometer Driving Schedule (UDDS). This paper discusses the emission results of the system measured over the course of 2000 hours of on-engine aging exposure. The system was evaluated over the cold-start UDDS, hot-start UDDS, Highway Fuel Economy Test (HFET) and US06 portion of the Supplemental Federal Test Procedure (SFTP). The discussion will cover the aging cycle utilized and its development, details of the desulfurization process, and regulated emission results over the test cycles of interest. After 2000 hours of on-engine aging, the NAC/DPF system demonstrated an average NOX reduction of 89% and PM reduction of 94% over the composite Federal Test Procedure (FTP).
CitationThornton, M., Webb, C., Weber, P., Orban, J. et al., "Fuel Sulfur Effects on a Medium-Duty Diesel Pick-Up with a NOX Adsorber, Diesel Particle Filter Emissions Control System: 2000-Hour Aging Results," SAE Technical Paper 2006-01-0425, 2006, https://doi.org/10.4271/2006-01-0425.
- Webb, C. Weber, P. Thornton, M. “Achieving Tier 2 Bin 5 Emission Levels with a Medium-Duty Diesel Pick-Up and a NO X Adsorber, Diesel Particulate Filter Emissions System-Exhaust Gas Temperature Management,” SAE 2004-01-0584 2004
- Webb, C. Weber, P. Thornton, M. “Achieving Tier 2 Bin 5 Emission Levels with a Medium-Duty Diesel Pick-Up and a NO X Adsorber, Diesel Particulate Filter Emissions System-NO X Adsorber Management,” SAE 2004-01-0585 2004
- Tomazic D. Tatur M. Thornton M. “Development of a Diesel Passenger Car Meeting Tier 2 Emissions Levels,” SAE Paper 2004-01-0581 March 2004 Detroit, Michigan
- Tomazic D. Tatur M. Thornton M. “APBF-DEC NO x Adsorber/DPF Project: Light-Duty Passenger Car Platform,” DEER Paper August 2003 Newport, Rhode Island
- Whitacre, S. et al. “Systems Approach to Meeting EPA 2010 Heavy-Duty Emission Standards Using a NO x Adsorber Catalyst and Diesel Particle Filter on a 15l Engine” SAE Paper 2004-01-0587
- Diesel Emission Control - Sulfur Effects (DECSE) Program NO x Adsorber Catalysts; Phase II Summary Report U.S. Department of Energy, Office of Transportation Technologies, U.S. Government Printing Office Washington, D.C. October 2000
- Clark, W. Sverdrup, G. Goguen, S. Keller, G. McKinnon, D. Quinn, M. Graves, R. “Overview of Diesel Emission Control - Sulfur Effects Program,” SAE 2000-01-1879 2000
- Ketfi-Cherif, A. et al. “Modeling and Control of a NO X trap Catalyst,” SAE 2000-01-1199 2000
- Guyon, M. et al. “NO X -Trap System Development and Characterization for Diesel Engines Emission Control,” SAE 2000-01-2910 2000
- Schenk, C. et al. “High-Efficiency NO X and PM Exhaust Emission Control for Heavy-Duty On-Highway Diesel Engines,” SAE 2001-01-1351 2001
- Hachisuka, H. et al. “Deactivation Mechanism of NO X Storage-Reduction Catalyst and Improvement of Its Performance,” SAE 2000-01-1196 2000
- Dou, D. Balland, J. “Impact of Alkali Metals on the Performance and Mechanical Properties of NO X Adsorber Catalysts,” SAE 2000-01-0734 2000
- Hachisuka, H. et al. “Improvement of NO X Storage-Reduction Catalyst,” SAE 2002-01-0732 2000
- Hodijati, Sh. et al. “Impact of Sulphur on the NO X Trap Catalyst Activity - Poisoning and Regeneration Behaviour,” SAE 2000-01-1874 2000
- Asik, J. Meyer, G. Dobson, D. “Lean NO X Trap Desulfation through Rapid Air Modulation,” SAE 2000-01-1200 2000