Hydraulic control system for improving pump response and dynamic matching of pump and valve
US6446433B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Sep 14, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/853
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic control system having a pump for delivering fluid under pressure from a fluid reservoir, a hydraulic actuator selectively driven by the fluid, the system comprises a main flow control valve connected between the pump and the actuator for selectively providing the fluid to and from the actuator, and a control unit connected to the main flow control valve for controlling operation of the main flow control valve to control the rate of change of the area of the main flow control valve relative to the delivery of fluid from the pump, and the control unit connected to the pump to increase or decrease the actual pump command proportional to the inverse of the pump command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.