Load sensing hydraulic control system for variable displacement pump
US6216456A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Nov 15, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7053
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A load sensing hydraulic control system for use in a work machine and adaptable for controlling the displacement of a variable displacement hydraulic pump. The control system includes a signal duplicating valve connected in fluid communication with both the pump controller and a fluid pressure source, and a sensor positioned and located for sensing the fluid pressure to the pump controller and outputting a signal to the controller indicative thereof. In response to signals received from the at least one sensor, the controller outputs a representative signal to the signal duplicating valve indicative of the highest pressure sensed by the at least one sensor, the signal duplicating valve being thereafter operable to allow fluid flow to pass therethrough to the pump controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.