Hydraulic system for utility vehicles, in particular agricultural tractors
US7395664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2006 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Jan 27, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7142
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed is a hydraulic system for utility vehicles, in particular agricultural tractors, for supplying primary and/or auxiliary pressure medium consumers (6, 11, 12) with pressure medium, comprising a pump (1), whose pressure and flow are controlled as a function of the load pressure of the pressure medium consumers by a pressure and flow controller (13) to which whenever auxiliary pressure medium consumers (11, 12) are operating, a higher load pressure compared to the actual load pressure is reported through an amplifier device. In order to obtain rapid response of an actuated auxiliary pressure medium consumer it is proposed that the amplifier device (29) consists of a proportionally controllable pressure reducing valve (39).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.