Development of Increased Test Conditions for Close-Coupled Catalyst Applications EMITEC GmbH

Format:

Conference/Event

Author/Creator:

Nagel, Thomas, author.

Conference Name:

1996 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1996-10-14 : San Antonio, Texas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1996

Summary:

AbstractTo meet LEV/ULEV - requirements, a considerable amount of development work was necessary to ensure suitable efficiency and durability of catalyst systems [1, 2, 3]. In addition to active emission reduction systems like the Electrically Heated Catalyst (EHC), Exhaust Gas Ignition (EGI) and the burner, passive systems like the HC-trap and Closed-Coupled Catalysts (CCC) are practical solutions to fulfill tighter emission requirements [4, 5, 6, 7]. Depending on the application, thermo-mechanical stresses, vibrations and efficiency degradation through aging increases with the reduction of the distance between the engine and the catalytic converter. Therefore, the test procedures which were suitable for converters which were to be placed in underfloor positions, needed to be modified according to the load spectra acting on close-coupled catalysts.This paper describes a new test strategy used during the development and design verification phase of catalytic converter systems. Proposals for modifications of the existing test procedures are given, to take into account the increased converter loads which might be applied

Notes:

Vendor supplied data

Publisher Number:

962079

Access Restriction:

Restricted for use by site license