This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Achieving the 2004 Heavy-Duty Diesel Emissions Using Electronic EGR and a Cerium Based Fuel Borne Catalyst
Annotation ability available
Sector:
Language:
English
Abstract
The post-1998 diesel engine emissions challenge was put forth in July 1995 by the Statement of Principles (SOP) signed by the manufacturers of heavy duty engines, the U.S. Environmental Protection Agency (EPA) and the California Air Resources Board (CARB). Through this SOP, the signatories agreed to reduce the on-highway diesel engine NOx emissions by 50% from the legislated 1998 4.0 g/bhp.hr to 2.0 g/bhp.hr by the year 2004 with no increase over the 1998 particulate matter legislated level set at 0.1 g/bhp.hr. There are provisions in the SOP for the optional grouping of the gaseous hydrocarbons and NOx, limiting them at a combined value of 2.5 g/bhp.hr with a 0.5 g/bhp.hr hydrocarbon limit.
In North America, particulate matter emissions standards were first imposed on heavy duty diesel engines in 1988. Since then, the NOx and particulate matter were balanced by taking advantage of the trade-off between the two pollutants inherent in diesel engines. As emission standards have become more stringent, controlling the trade-off between NOx and particulate matter has become the major challenge in meeting emissions legislation. This paper presents the results of a cooperative development program between Navistar and Rhône-Poulenc whose goal was to achieve the proposed 2004 emissions standards. The strategy was designed to couple Navistar's electronic EGR for NOx control with Rhône-Poulenc's EOLYSTTm particulate matter control technology. The work reported in this paper was carried out on a heavy-duty 7.3 liter Navistar engine. The combination of the two technologies enabled the engine to simultaneously lower NOx and particulate matter to levels which meet those proposed by the 2004 SOP. NOx was controlled to 2.0 g/bhp.hr and particulate matter was lowered to 0.01 g/bhp.hr well below the 0.1 g/bhp.hr of the SOP.
Recommended Content
Authors
Topic
Citation
Psaras, D., Summers, J., Das, P., Ceynow, K. et al., "Achieving the 2004 Heavy-Duty Diesel Emissions Using Electronic EGR and a Cerium Based Fuel Borne Catalyst," SAE Technical Paper 970189, 1997, https://doi.org/10.4271/970189.Also In
References
- Sumiya, S. Muramatsu G. Matsumura N. Yoshida K. Schenck R. “Catalytic Reduction of NOx in Diesel Exhaust” SAE Technical Paper Series, Paper Number 920853 1992
- Heimrich, M. Deviney M. “Lean NOx Catalyst Evaluation and Characterization” SAE Technical Paper Series, Paper Number 930736 1993
- Feeley, J. Deeba M. Ferrauto R. “Abatement of NOx from Diesel Engines: Status and Technical Challenges” SAE Technical Paper Series, Paper number 950747 1995
- Kawanami, M. Horiuchi M. Lox E. Leyrer J. Psaras D. “Advanced Catalyst Studies of Diesel NOx Reduction for On-Highway Trucks” SAE Technical Paper Series, Paper Number 950154 1995
- Kharas, K. Theis J. “Performance Demonstration of a Precious Metal Lean NOx Catalyst in Native Diesel Exhaust” SAE Technical Paper Series, Paper Number 950751 1995
- Herzog, P.L. Burgler L. Winklhofer E. Zelenka P. Cartellieri W. “NOx Reduction Strategies for DI Engines” SAE Technical Paper Series, Paper Number 920470 1992
- Lapuerta, M. Salavert J.M. Domenech C. “Modelling and Experimental Study About the Effect of Exhaust Gas Recirculation on Diesel Engine Combustion and Emissions” SAE Technical Paper Series, Paper Number 950216 1995
- Needham, J. Doyle D. Nicol A. “The Low NOx Truck Engine” SAE Technical Paper Series, Paper Number 910731 1991
- “Diesel Particulate Traps” J.S. SAE Publication P-140 1984
- “Diesel Particulates: an update” SAE Publication SP-702 1987
- “Diesel Particulate Control” SAE Publication P-158 1985
- “Developments in Diesel Particulate Control Systems SAE Publication SP-775 1989
- “Diesel Particulate Control, Trap, and Filtration Systems” SAE Publication SP-896 1992
- Summers J.C. Van-Houtte S. Psaras D. “Simultaneous Control of Particulate and NOx Emissions From Diesel Engines” Catalysis B 1996
- Lepperhoff, G. Luders H. Barthe P. Lemaire J. “Quasi-Continuous Particle Trap Regeneration by Cerium-Additives” SAE Technical Paper Series, Paper Number 950369
- Lemaire, J. Khair M. “Effect of Cerium Fuel Additive on the Emissions Characteristics of a Heavy Duty Diesel Engine” SAE Technical Paper Series, Paper Number 942067 1994
- Goldberger, L. Ha K. Larocque J. Walsh J. Skabowski A. “Field Evaluation of a Diesel Particulate Trap System for a 6V92TA Transit Bus Engine” SAE Technical Paper Series, Paper Number 900112 1992