Device and method for controlling a hydraulic machine
US10830348B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2016 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Apr 1, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/4026
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a hydraulic machine, in particular to a hydraulic motor with two working lines, from one of which a high pressure line and from the other one a low pressure line is branched off. An electronic control unit and a servo displacement unit are provided to control the displacement of the displacement volume of a drive mechanism of the hydraulic machine, wherein the displacement volume can be determinated by the displacement of a servo piston within the servo displacement unit. For this, the servo piston can be loaded at least on one side via a servo pressure line with hydraulic fluid under servo pressure, wherein the servo pressure level can be adjusted by a control spool arranged moveable within a control valve. For this, hydraulic fluid from the low pressure line or, perhaps, from the high pressure line is guidable via the control valve to the servo pressure line if a suitable control signal is available at a switching valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.