Exhaust muffling device
US7669693B2 · kind B2 · utility
12Cited by
23References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2004 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Mar 22, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2490/18
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide an exhaust muffling device having a simple structure, which is capable of suppressing air column resonance favorably, irrespective of a length of an outlet pipe of an exhaust pipe which communicates with a muffler, and with which it is possible to achieve appropriate reductions in weight and cost. The exhaust muffling device of the present invention comprises a muffler having an expansion chamber whose length is L in an exhaust direction, and an outlet pipe being in communication with the expansion chamber and whose pipe length is approximately 2nL in which n is a natural number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.