Valve for controlling fluids
US6719264B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Mar 12, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/705
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a valve for controlling fluids, having an actuator unit for actuating a valve member which has a first piston and a second piston, separated from it by a hydraulic chamber, and which actuates a valve closing member that divides a low-pressure region at system pressure from a high-pressure region. For leakage compensation, a filling device connectable to the high-pressure region is provided with a hollow chamber, in which a throttle body is disposed such that a line leading to the high-pressure region discharges into the hollow chamber on one end of the throttle body, and on the other end a system pressure line leading to the hydraulic booster branches off. The system pressure is built up as a function of the prevailing pressure in the high-pressure region, by means of geometrically defining the throttle body, a gap surrounding it, and the dimensions of the piston along which the system pressure is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.