Mufflers with enhanced acoustic performance at low and moderate frequencies
US7281605B2 · kind B2 · utility
9Cited by
47References
43Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 30, 2004 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Jun 15, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2470/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention relates to an exhaust silencer or muffler for an internal combustion engine, in particular a silencer with the damping characteristics of a resonator with the absorptive characteristics of a dissipative silencer. The silencer of the present invention provides an improved silencer or muffler for use with an internal combustion engine that incorporates both a dissipative silencer and a resonator in a single muffler assembly suitable for use with standard automotive construction techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.