Application of In-Line Hydrocarbon Adsorber Systems 980422
An adsorber system for reducing cold start hydrocarbon (HC) emissions has been developed combining existing catalyst technologies with a zeolite-based HC adsorber. The series flow in-line concept offers a passive and simplified alternative to other technologies by incorporating one additional adsorber substrate into existing converters without any additional valving, purging lines, or special substrates.
This contribution describes the current development status of hydrocarbon adsorber aftertreatment technologies. We report results obtained with a variety of adsorber, start-up, and underfloor catalyst system combinations. In each case, it was possible to achieve HC emission levels in compliance with the ULEV standards, and in the best cases, demonstrating HC emissions substantially below the legislated standard. In contrast to electrically heated catalyst (EHC) approaches, HC adsorbers allow for the ready incorporation of a passive element into an existing exhaust system without the need for ancillary EHC hardware and its associated costs.
Citation: Abthoff, J., Kemmler, R., Klein, H., Matt, M. et al., "Application of In-Line Hydrocarbon Adsorber Systems," SAE Technical Paper 980422, 1998, https://doi.org/10.4271/980422. Download Citation
Author(s):
Joerg Abthoff, Roland Kemmler, Herbert Klein, Martin Matt, Heinz Robota, Wilhelm Wolsing, Juergen Wiehl, Stephen Dunne
Affiliated:
Daimler-Benz AG, ASEC Manufacturing
Pages: 14
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1998 Transactions - Journal of Fuels and Lubricants-V107-4
Related Topics:
Low emission vehicles (LEV) and zero emission vehicles (ZEV)
Emissions
Hydrocarbons
Catalysts
Exhaust systems
Hardware
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