Regulated canister purge solenoid valve having improved purging at engine idle
US5069188A · kind A · utility
64Cited by
17References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1991 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Feb 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87507
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Improved idle purging is obtained in a regulated canister purge solenoid valve by communicating the atmospheric chamber space of the regulator mechanism to atmosphere through the canister and providing in the movable wall of the regulator mechanism an orifice which is closed by abutment of a surrounding portion of the movable wall with an internal surface of the atmospheric chamber space when the engine is off, but is opened when that surrounding portion of the movable wall leaves that internal surface of the atmospheric chamber space upon engine running.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.