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Electrically-Heated Catalyst System Conversions on Two Current-Technology Vehicles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1991 by SAE International in United States
Annotation ability available
Two different configurations of electrically-heated catalyst systems were installed on two new production vehicles. A 1990 Buick LeSabre was evaluated with a heated catalyst placed directly in front of the main production catalytic converter while a 1990 Toyota Celica was evaluated with an electrically-heated catalyst placed between the main close-coupled catalytic converter and a smaller downstream production catalytic converter. Initial laboratory studies involved examination of heating strategies to minimize electrical energy requirements, a variety of off-board battery and recharging configurations for their effect on emissions, and multiple air injection strategies to achieve minimum hydrocarbon emissions while avoiding a NOx penalty. Final efforts involved installation of optimized, complete on-vehicle electrically-heated catalyst systems for subsequent on-road mileage accumulation. The vehicle conversions, albeit unaged, exhibited FTP emissions which show promise of meeting the California Ultra-Low Emission Vehicle standards, and have contributed to adoption of low emission standards by the California Air Resources Board.
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CitationHeimrich, M., Albu, S., and Osborn, J., "Electrically-Heated Catalyst System Conversions on Two Current-Technology Vehicles," SAE Technical Paper 910612, 1991, https://doi.org/10.4271/910612.
- Blair, D. M. Piotrowski, G. K. “Evaluation of a Resistively Heated Metal Monolith Catalytic Converter on an M100 Neat Methanol-Fueled Vehicle,” Technical Report EPA/AA/CTAB/88-12 August 1988
- Piotrowski, G.K. “A Resistively Heated Catalytic Converter with Air Injection for Oxidation of Carbon Monoxide and Hydrocarbons at Reduced Ambient Temperatures,” Technical Report EPA/AA/CTAB/89-06 September 1989
- Hellman, K. H. Bruetsch, R. I. Piotrowski, G. K. Tallent, W. D. “Resistive Materials Applied to Quick Light-Off Catalysts,” SAE Paper 890799 February 27 March 3 1989
- Piotrowski, G. K. “Evaluation of a Resistively Heated Metal Monolith Catalytic Converter on a Gasoline”Fueled Vehicle,” Technical Report EPA/AA/CTAB/88-12 December 1989
- Whittenberger, W. A. Kubsh, J. E. “Recent Developments in Electrically Heated Metal Monoliths,” SAE Paper 900503 February 26 March 2 1990
- Hurley, R.G. Hansen, L.A. LaCourse, D.L. Watkins, W.L.H. Gandhi, H.S. Whittenberger, W.A. “Evaluation of Metallic and Electrically Heated Metallic Catalysts on a Gasoline Fueled Vehicle
- Heimrich, M. J. “Experimentation to Determine the Feasibility of Air Injection on an Electrically-Heated Catalyst for Reducing Cold-Start Benzene Emissions from Gasoline Vehicles,” Final Report prepared for the Advisory Committee for Research Southwest Research Institute January 1990
- Heimrich, M.J. “Air Injection to an Electrically-Heated Catalyst for Reducing Cold-Start Benzene Emissions from Gasoline Vehicles,” SAE Paper 902115 October 22 25 1990
- Heimrich, M.J. “Control of Benzene Emissions from Light-Duty Motor Vehicles,” Final Report prepared for the California Air Resources Board, Contract No. A6-204-32 October 1990
- Staff Report “Proposed Regulations for Low-Emission Vehicles and Clean Fuels,” August 13 1990
- Technical Support Document “A Proposal to Amend Regulations Regarding Exhaust Emission Standards and Test Procedures for Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles for the Control of Criteria Pollutant and Toxic Air Contaminant Emissions,” April 23 1990
- Information provided to Southwest Research Institute February 13 1990
- Product Manual “Camet Electrically-Heated Catalytic Converter, How to Get the Camet EHC Up and Running,” Camet Co. W.R. Grace & Co. 12000 Winrock Road, Hiram, Ohio 44234
- Code of Federal Regulations