Hydraulic system architecture for controlling steering
US6769251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2003 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Feb 16, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to an architecture for a hydraulic steering control system including at least one actuator; the hydraulic system comprises a directional-control valve connected to a pressure-generator device and to an associated main supply, the hydraulic system further comprising a reversible electrically-driven pump unit having two ports and being fitted with a general selector arranged, in a normal mode of operation, to put the chambers of the actuator into communication with the directional-control valve, and in an alternate mode of operation to put the chambers of the actuator into communication with the ports of the pump unit. A compensation device makes it possible in the alternate mode to compensate for any flow differential between the flow drawn in by the pump unit from one of the chambers of the actuator and the flow delivered by the pump unit into the other chamber of the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.