Patent · US Active

Valve device for a hydraulic circuit, and oil-pump regulating arrangement

US9334978B2 · kind B2 · utility

9Cited by

12References

15Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

Rolf Lappan · Cologne, DE
Werner Buse · Kaarst, DE
Christoph Sadowski · Sprockhövel, DE
Lukas Romanowski · Osnabrück, DE

Key dates

Filing date	Aug 21, 2012
Grant date	May 10, 2016
Priority date	—
Expiry date	Nov 12, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01M2001/0238
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve device for a hydraulic circuit includes an actuator unit, a valve unit and an opening. The actuator unit comprises an electromagnetic circuit comprising a movable armature, a core, a coil configured to be supplied with a current and a flux guiding means, and a space arranged in a valve interior between the armature and the core. The valve unit comprises an outlet, an inlet arranged between the outlet and the space in the valve interior, a valve seat arranged between the inlet and the outlet, and a valve closing body connected with the armature. The valve closing body is spring-loaded towards the valve seat. The opening is arranged at an end of the valve unit opposite to the space. The opening comprises a valve tappet arranged therein. The valve tappet is pressure-loaded and displaceable counter to the valve closing body in an opening direction.

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