Method of assembling a catalytic converter for use in an internal combustion engine
US6484397B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2001 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Feb 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49925
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of assembling a catalytic converter comprising the steps of: (1) providing a metal shell exhibiting a predetermined shape that substantially matches the shape of the ceramic substrate; (2) inserting into the metal shell a sufficient amount of a resilient supporting mat material to form a encircling mat layer; (3) compressing the encircling mat layer to an initial gap bulk density, the initial gap bulk density being higher than the final gap bulk density; (4) releasing the compression on the mat layer and prior to the mat layer reaching its final gap bulk density, inserting at least a portion of the substrate into the encircling mat layered metal shell and then allowing the mat layer to further release until the mat layer is compressed against the ceramic substrate at the final predetermined gap bulk density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.