Starting control to control a hydraulic piston /cylinder unit
US6244410A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Nov 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2607
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to control of a hydraulic piston/cylinder unit, in particular a multi-disc clutch having a control valve which can be moved into an open and a closed position, a first connecting line connected to the hydraulic piston/cylinder unit and a second connecting line connected to a pressure feed. The first and second connecting lines are in communication with the control valve. The first connecting line is designed such that when subjected to pressure, a force acting in the closed position can be generated on the control valve. The control further possesses a first control line which is in connection with the control valve such that when subjected to pressure, a force acting in the open position can be generated on the control valve. Furthermore, a restrictor element is provided whose inlet can be connected to the pressure feed and whose outlet is in communication with a pressure store and the first control line. The control valve is designed such that it is moved from the open position to the closed position when the pressure force acting in the first connecting line exceeds the pressure force acting in the first control line by a given amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.