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Achieving Tier 2 Bin 5 Emission Levels with a Medium Duty Diesel Pick-Up and a NOX Adsorber, Diesel Particulate Filter Emissions System-Exhaust Gas Temperature Management
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 8, 2004 by SAE International in United States
Annotation ability available
Increasing fuel costs and the desire for reduced dependence on foreign oil has 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. The main obstacle to the increased use of diesel engines in this platform is the upcoming extremely stringent, Tier 2 emission standard. 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, NOX adsorber catalysts (NAC), and diesel particle filters (DPFs) allow the development of powertrain systems that have the potential to comply with these future requirements. In meeting the Tier 2 emissions standards, the heavy light-duty trucks (HLDTs) and medium-duty passenger vehicles (MDPVs) will face the greatest technological challenges. 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. The primary technology being addressed by these projects is the sulfur tolerance of the NAC/DPF system and the durability implications of varying fuel sulfur levels. 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 application requires the development of an integrated engine/emissions management system [1,2,3,4,5,6,7,8,9,10]. This paper discusses the integrated engine/emissions system management and regeneration control strategies that were developed. The final control strategies achieved over 98% reductions in tailpipe NOX mass emissions over the hot-start portion of the light-duty Federal Test Procedure (FTP-75). This paper discusses thermal management of exhaust gas temperature to maintain the high efficiency window for NAC operation through the use of a diesel-fueled burner. The discussion will cover cold-start strategies and low exhaust gas temperature operation.
CitationWebb, C., Weber, P., and Thornton, M., "Achieving Tier 2 Bin 5 Emission Levels with a Medium Duty Diesel Pick-Up and a NOX Adsorber, Diesel Particulate Filter Emissions System-Exhaust Gas Temperature Management," SAE Technical Paper 2004-01-0584, 2004, https://doi.org/10.4271/2004-01-0584.
SAE 2004 Transactions Journal of Fuels and Lubricants
Number: V113-4; Published: 2005-07-05
Number: V113-4; Published: 2005-07-05
- Diesel Emission Control - Sulfur Effects (DECSE) Program: NOx 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 NOX trap Catalyst,” SAE 2000-01-1199, 2000.
- Guyon, M., et al, “NOX -Trap System Development and Characterization for Diesel Engines Emission Control,” SAE 2000-01-2910, 2000.
- Schenk, C., et al, “High-Efficiency NOX and PM Exhaust Emission Control for Heavy-Duty On-Highway Diesel Engines”, SAE 2001-01-1351, 2001.
- Hachisuka, H., et al, “Deactivation Mechanism of NOX 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 NOX Adsorber Catalysts,” SAE 2000-01-0734, 2000.
- Hachisuka, H., et al, “Improvement of NOX Storage-Reduction Catalyst,” SAE 2002-01-0732, 2000.
- Hodijati, Sh., et al, “Impact of Sulphur on the NOX Trap Catalyst Activity - Poisoning and Regeneration Behaviour,” SAE 2000-01-1874, 2000.
- Asik, J., Meyer, G., Dobson, D., “Lean NOX Trap Desulfation Through Rapid Air Modulation,” SAE 2000-01-1200, 2000.
- Webb, C., Weber, P., Thornton, M., “Achieving Tier 2 Bin 5 Emission Levels with a Medium Duty Diesel Pick-Up and a NOX Adsorber, Diesel Particulate Filter Emissions System-NOX Adsorber Management,” SAE 2004-01-0585, 2004.