Noise-attenuating internal combustion engine air intake system
US5424494A · kind A · utility
17Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1992 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | Dec 10, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/10347
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Noise is attenuated by a resonator having an inlet pipe leading to an expansion chamber and an outlet pipe leading from the expansion chamber. The two pipes are not aligned with each other at the expansion chamber. The portions of the two pipes proximate the expansion chamber contain respective venturis. The expansion chamber also functions as a Helmholtz resonator by providing the resonator with one or more apertures between the outlet pipe and the expansion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.