Electromagnetic valve actuator with soft-seating
US6817592B2 · kind B2 · utility
9Cited by
18References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Jul 4, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2301/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The electromagnetic valve actuator of the preferred embodiments include a valve head that moves between an open position, a middle position, and a closed position; a plunger coupled to the valve head; and a housing defining a cavity that surrounds the plunger and contains a fluid. The cavity cooperates with the plunger and the fluid to provide increasing resistance as the valve head moves from the middle position to the closed position. Because of the increased resistance, the valve head softly seats against a valve seat, which minimizes noise, vibration, and harshness within the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.