Fluid selection valve unit, exhaust gas control valve having the same, and waste gate valve having the same
US8109257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2008 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Jan 27, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49409
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid selection valve unit comprising a valve seat having a side surface having a predetermined depth and a bottom surface continuous to the side surface and a valve member supported with a rotary shaft at one end. The valve member includes a bottom portion and a side end surface formed above the bottom portion, and is configured so that a passage area of a gap formed between the side end surface of the valve member and the side surface of the valve seat is smaller than a contact passage area formed between the bottom portion of the valve member and the bottom surface of the valve seat during a time when the bottom portion of the valve member comes into contact with the bottom surface of the valve seat by the rotation of the rotary shaft, and the rotary angle increases up to a predetermined value of the rotary angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.