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Cold-Start Hydrocarbon Collection for Advanced Exhaust Emission Control
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1992 by SAE International in United States
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This paper describes the findings of a laboratory effort to demonstrate improved automotive exhaust emission control with a cold-start hydrocarbon collection system. The emission control strategy developed in this study incorporated a zeolite molecular sieve in the exhaust system to collect cold-start hydrocarbons for subsequent release to an active catalytic converter. A prototype emission control system was designed and tested on a gasoline-fueled vehicle. Continuous raw exhaust emission measurements upstream and downstream of the zeolite molecular sieve revealed collection, storage, and release of cold-start hydrocarbons. Federal Test Procedure (FTP) emission results show a 35 percent reduction in hydrocarbons emitted during the cold-transient segment (Bag 1) due to adsorption by the zeolite. Furthermore, this paper identifies future development needs, namely improvements in adsorption capability, system purging of the collected pollutants, and a complete on-vehicle system demonstration. In this study, zeolite molecular sieves have been shown to be potentially capable of improving control of cold-start emissions. Such a capability suggests the possible future use of zeolite molecular sieves in advanced automotive exhaust aftertreatment systems.
|Technical Paper||In-line Hydrocarbon (HC) Adsorber System for Cold Start Emissions|
|Technical Paper||Hydrocarbon Adsorber System for Cold Start Emissions|
CitationHeimrich, M., Smith, L., and Kitowski, J., "Cold-Start Hydrocarbon Collection for Advanced Exhaust Emission Control," SAE Technical Paper 920847, 1992, https://doi.org/10.4271/920847.
SAE 1992 Transactions: Journal of Fuels & Lubricants
Number: V101-4; Published: 1993-09-01
Number: V101-4; Published: 1993-09-01
- Code of Federal Regulations, Title 40, Chapter 1, Part 86, Subpart B, Sections applicable to light-duty vehicles
- Otto, K. Montreuil, C.N. Todor, O. McCabe, R.W. Gandhi, H.S. “Adsorption of Hydrocarbons and Other Exhaust Components on Silicalite.” Industrial Engineering Chemical Research 30 10 American Chemical Society 1991
- Heimrich, M.J. Smith, L.R. “Control of Benzene Emissions from Light-Duty Motor Vehicles,” Task 1 Feasibility Report to the State of California Air Resources Board September 6 1988
- Heimrich, M.J. “Control of Benzene Emissions from Light-Duty Motor Vehicles,” Final Report for the State of California Air Resources Board June 1991
- 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. Albu, S. Osborn, J. “Electrically-Heated Catalyst System Conversions on Two Current-Technology Vehicles,” SAE Paper 910612 February 25 March 1 1991
- Schatz, O. “Cold-Start Improvements with a Heat Store,” SAE Paper 910305 February 25 March 1 1991
- Breck, D.W. Zeolite Molecular Sieves Structure, Chemistry, and Use John Wiley & Sons, Inc. Canada 1974
- Ribeiro, F. Ramoa Rodriguez, Alirio E. Rollmann, L. Deane Naccache, Claude Zeolites: Science and Technology Martinus Nijhoff Publishers Boston 1984
- Rabo, Jule A. “Zeolite Chemistry and Catalysis,” American Chemical Society Washington, D.C. 1976
- Kerr, G. T. “Synthetic Zeolites,” Scientific America 100 105 July 1989
- Heimrich, M.J. Albu, S. Ahuja, M. “Electrically-Heated Catalysts for Cold-Start Emission Control on Gasoline- and Methanol-Fueled Vehicles,” ASME Paper 15 Fuels, Controls, and Aftertreatment for Low Emissions Engines September 29 October 2 1991