Double-acting two-stage hydraulic control device
US6474304B1 · kind B1 · utility
14Cited by
13References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 15, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | May 15, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/466
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic control device which may be used in a number of applications, including with a fuel injector, includes a control valve having a first and a second independently shiftable valve member, the control member being configurable to define a plurality of actuating fluid flow paths for controlling hydraulic flow therethrough. A fuel injector includes the aforementioned control valve. A method of hydraulic control includes a number of steps, including independently controlling the shifting of two valves in a control valve assembly to selectively control the flow of actuating fluid to an actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.