Hydraulic control system having energy recovery
US8997479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2012 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Oct 11, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/761
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a pump, a tank, and an actuator. The hydraulic control system may also have at least a first valve configured to control fluid flow between the pump, the tank, a first chamber of the actuator, and a second chamber of the actuator; a second valve fluidly disposed between the second chamber and the tank; and a third valve fluidly disposed between the first and second chambers. The hydraulic control system may further have a controller configured to selectively cause the second valve to block fluid flow from the second chamber of the actuator to the tank, and to selectively cause the third valve to fluidly communicate the first and second chambers of the actuator when the second valve blocks fluid flow from the second chamber of the actuator to the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.