Muffler and related systems
US7854297B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2007 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Oct 12, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N1/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Mufflers are provided for a vehicle exhaust system having a combustion chamber and an exhaust pipe. The vehicle exhaust system is configured to reduce the noise of combustion gasses generated in the combustion chamber. An exemplary muffler includes a proximal end and a distal end, the proximal end being configured for mounting the muffler to the exhaust pipe leading to the engine, the distal end being configured to allow the combustion gasses to pass therethrough, and at least one vortex chamber disposed between the proximal end and the distal end. The at least one vortex chamber includes a circular peripheral wall for inducing a vortex on a portion of the combustion gasses expelled from the combustion chamber during high-pressure pulsations created by the operation of a vehicle engine. The vortex impedes flow of the combustion gasses from the pipe such that acoustic energy associated with the expulsion of the combustion gasses is dissipated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.