Flow management of a hydraulic system
US11378104B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2021 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Jul 28, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/80
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic system for a work vehicle includes a first pump providing a first flow to a first circuit. A first pressure sensor measures a first pressure in the first circuit. A first swashplate angle sensor measures a first angle of a first swashplate of the first pump. A supplemental pump provides a supplemental flow to a supplemental circuit. A supplemental pressure sensor measures a supplemental pressure in the supplemental circuit. A supplemental valve adjusts the load sense signal provided to a supplemental load sensing compensator of the supplemental pump. A first valve selectively enables flow from the supplemental circuit to the first circuit when the supplemental pressure is equal to or greater than the first pressure. A controller determines to operate the supplemental pump in one of a standby condition and a use condition based in part on the first angle of the first swashplate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.