Measuring hydraulic fluid pressure in a fluid-working machine
US11073147B2 · kind B2 · utility
1Cited by
11References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 21, 2018 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Mar 15, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2205/03
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A measurement of the pressure of hydraulic fluid in a fluid working machine can be determined from the timing of the movement of valves which selectively seal a working chamber of cyclically varying volume from a fluid gallery. The timing of opening of a low pressure valve, to connect a working chamber to a low pressure fluid gallery, following the closure of a high pressure valve to seal a working chamber can be used to estimate the pressure in the high pressure fluid gallery at the moment of closure of the high pressure valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.