Patent · US Active

Device for controlling a hydraulic accumulator of a hydraulic system

US9097336B2 · kind B2 · utility

4Cited by

6References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ruediger Block · Ditzingen, DE
Nils Steinbach · Stuttgart, DE
Werner Hess · Stuttgart, DE
Ianislav Krastev · Ludwigsburg, DE
Helmut Schneider · Hersbruck, DE
Steffen Strauss · Regensburg, DE
Uwe Kulow · Ludwigsburg, DE
Christof Ott · Asperg, DE

Key dates

Filing date	Sep 8, 2011
Grant date	Aug 4, 2015
Priority date	—
Expiry date	Apr 3, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86485
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A device is described for controlling a hydraulic accumulator of a hydraulic system, for example a vehicle transmission, having a valve device which may connect and disconnect an accumulator-side port of the device to and from a system-side port, the valve device including at least one first check valve which is situated hydraulically between the accumulator-side port and the system-side port, and which is blocking in the direction of the system-side port, the valve device also including an electrically actuated control valve which is situated between a control port of the first check valve and the accumulator-side port in such a way that the control valve may hydraulically unblock the first check valve, using the pressure prevailing at the accumulator-side port.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.