Supercharger with multiple backflow ports for noise control
US6874486B2 · kind B2 · utility
18Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2003 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Apr 4, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86751
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A supercharger includes multiple back flow ports which are controlled by valves. The valves regulate the timing and area for back flow of pressurized outlet air into the rotor chambers. The back flow air tends to equalize air pressure in the chambers prior to their exhausting into the outlet and thereby reduces flow back noise. The multiple ports are opened selectively or sequentially to provide noise control with improved efficiency at varying speeds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.