Automotive exhaust noise attenuator
US5058703A · kind A · utility
17Cited by
14References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1988 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Dec 27, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2025/913
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
To reduce noise, an automotive exhaust tailpipe has a convoluted surface at or near its outlet to generate pairs of counterrotating axial vortices within the exhaust gases just before or just as the gases exit the tailpipe. The convoluted surface may be the internal surface of the tailpipe, or a thin-walled convoluted member may be disposed within the tailpipe near its outlet end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.