Exhaust piping for a catalytic exhaust system
US5697215A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1995 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Dec 1, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2310/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention relates especially to an exhaust piping for a catalytic gas exhaust system including a gas manifold and a catalyzer, said piping (4) being situated between said manifold and said catalyzer and provided with a composite tube (8) which consists of an internal tube and of an external tube defining between them a substantially annular space. Advantageously, said composite tube (8) is housed inside said exhaust piping (4), the external tube coming substantially into contact with said piping, and said internal tube (10) and external tube (11) exhibit thin walls (10A, 11A), the thickness of which is less than 0.3 millimeter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.