Patent · US Active

Valve device for a hydraulic circuit and oil pump control apparatus

US9803772B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

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

Key dates

Filing date	Jan 10, 2014
Grant date	Oct 31, 2017
Priority date	—
Expiry date	Apr 1, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/0693
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve device for a hydraulic circuit includes an actuator unit comprising an electromagnetic circuit which comprises an armature, a core, a coil carrier, a coil, and a flux guiding device. A valve unit comprises a unit formed by a valve tappet and the armature, inlet and outlet ports, and a control port arranged between the inlet and outlet ports. A longitudinal through bore is arranged in the unit to extend from the inlet port into an actuator chamber. A first control body cooperating with a first valve seat and a second control body cooperating with a second valve seat are arranged at the unit in which the longitudinal through bore is formed. The armature and the valve tappet are loaded in an opening direction of the inlet valve by a spring element and are loadable in an opening direction of the outlet port by energizing the electromagnetic circuit.

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