Title:
PRESSURE LIMITING VALVE AND CLOSED HYDRAULIC CIRCUIT HAVING A PRESSURE LIMITING VALVE
Document Type and Number:
WIPO Patent Application WO/2013/087156
Kind Code:
A3
Abstract:
Disclosed is a pressure limiting valve arrangement having a pressure limiting valve, preferably a low-pressure limiting valve, having a valve body, onto the first control surface of which a system pressure to be limited is applied in the opening direction, e.g. via a first control line or via a first control connection. In addition, the pressure limiting valve has a spring via which the valve body is pressurised in the closing direction. According to the invention, the valve body has a second control surface onto which system pressure can be applied via a second control line or a second control connection. The system pressure can also act on the second control surface to a reduced or throttled extent. A closed hydraulic circuit with two working lines, into which a feed pump can convey a substitute pressurising agent to make up a shortfall via a supply line, is also disclosed. The supply line can be relieved with various response pressures via a pressure limiting valve arrangement of the type described above.
Inventors:
CAMURDAN HAKAN (DE)
WANNER ROBERT (DE)
GINTER JUERGEN (DE)
VAN AALST DIRK (DE)
GEPRAEGS MARKUS (DE)
WANNER ROBERT (DE)
GINTER JUERGEN (DE)
VAN AALST DIRK (DE)
GEPRAEGS MARKUS (DE)
Application Number:
EP2012/004996
Publication Date:
August 08, 2013
Filing Date:
December 04, 2012
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
International Classes:
F15B13/02
Foreign References:
| EP2241764A1 | 2010-10-20 | |||
| EP2375083A2 | 2011-10-12 | |||
| DE19640545A1 | 1998-04-02 |
Attorney, Agent or Firm:
THÜRER, Andreas (Zum Eisengießer 1, Lohr am Main, DE)
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