Valve device for a hydraulic circuit and oil pump regulating arrangement

Patent metadata

Field	Value
Publication number	US-10094253-B2
Application number	US-201314653855-A
Country	US
Kind code	B2
Filing date	Nov 19, 2013
Priority date	Dec 21, 2012
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A valve device for a hydraulic circuit includes an actuator unit and a valve unit. The actuator unit comprises an electromagnetic circuit comprising an armature which moves in a translational manner, a core, a coil carrier, a coil configured to be energized, and a flux guiding device. The coil is arranged on the coil carrier. The valve unit comprises a valve housing comprising a transverse bore which serves as a first control chamber pressure port, a regulating slide mounted in the valve housing, the regulating slide being configured to move axially, a first outlet port, an inlet port, and a second control chamber pressure port arranged between the inlet port and the first outlet port.

First claim

What is claimed is:

1. A valve device for a hydraulic circuit, the valve device comprising:
an actuator unit comprising,
an electromagnetic circuit comprising an armature configured to move in a translational manner,
a core,
a coil carrier,
a coil configured to be energized, the coil being arranged on the coil carrier, and
a flux guiding device; and

a valve unit comprising,
a valve housing comprising a transverse bore configured to serve as a regulating pressure port,
a regulating slide mounted in the valve housing, the regulating slide being configured to move axially,
a first outlet port,
an inlet port, and
a control pressure port arranged between the inlet port and the first outlet port,
wherein,
the first outlet port is arranged at an end of the valve unit opposite to the actuator unit,
the regulating pressure port is arranged between the actuator unit and the inlet port,
a pressure applied to the regulating pressure port acts on the armature in a direction of the actuator unit, and
the pressure applied to the regulating port acts on an application surface, the application surface being defined at an axial end of the armature comprising a cross-sectional area which projects radially beyond a cross-sectional area of the regulating slide.

2. The valve device as recited in claim 1 , wherein the regulating slide comprises a first control surface which is configured,
to close a first free flow cross-section between the inlet port and the control pressure port, or
to regulate a second free flow cross-section between the control pressure port and the first outlet port, or
to close the control pressure port.

3. The valve device as recited in claim 2 , wherein the regulating slide further comprises a second control surface which separates the inlet port from the regulating pressure port.

4. The valve device as recited in claim 1 , further comprising:
a threaded bore arranged in the core ( 20 ); and
an adjustment screw comprising a shoulder, the adjustment screw being configured to be fastened in the threaded bore,
wherein,
the spring element is configured to rest at an end opposite to the armature against the shoulder of the adjustment screw.

5. The valve device as recited in claim 4 , wherein the shoulder comprises a projection extending therefrom towards the armature, the projection being surrounded by the spring element.

6. The valve device as recited in claim 4 , further comprising:
a core screw arranged in the core, the core screw comprising a core screw longitudinal bore;
an actuator room arranged between the armature and the core; and
a second outlet port arranged at an end of the valve device opposite to the first outlet port,
wherein,
the adjustment screw comprises an adjustment screw longitudinal bore, and
the core screw longitudinal bore and the adjustment screw longitudinal bore together define a longitudinal bore via which the actuator room is connected with the second outlet port.

7. The valve device as recited in claim 1 , further comprising:
a non-magnetizable stop sleeve,
wherein,
the core comprises a through-going bore,
the non-magnetizable stop sleeve is fastened in the through-going bore, and
the armature rests against the non-magnetizable stop sleeve when the armature is in an attracted position.

8. The valve device as recited in claim 1 , further comprising:
a clamping bush comprising axial bores fastened in the first outlet port; and
a readjusting spring supported on the clamping bush, the readjusting spring being configured to load the regulating slide towards the armature.

9. The valve device as recited in claim 1 , wherein
the armature comprises an armature opening, and
the regulating slide is force-fitted into the armature opening.

10. A valve device for a hydraulic circuit, the valve device comprising:
an actuator unit comprising,
an electromagnetic circuit comprising an armature configured to move in a translational manner,
a core,
a coil carrier,
a coil configured to be energized, the coil being arranged on the coil carrier, and
a flux guiding device; and

a valve unit comprising,
a valve housing comprising a transverse bore configured to serve as a regulating port,
a regulating slide mounted in the valve housing, the regulating slide being configured to move axially,
a first outlet port,
an inlet port,
a control pressure port arranged between the inlet port and the first outlet port,
an armature seat,
a spring element configured to load the armature in a direction out of the actuator unit whereby the inlet port is opened and the armature is moved towards the armature seat,
wherein,
the first outlet port is arranged at an end of the valve unit opposite to the actuator unit,
the regulating port is arranged between the actuator unit and the inlet port,
a pressure applied to the regulating port acts on the armature in a direction of the actuator unit, and,
the armature is configured be loadable by the actuator unit and by the pressure at the regulating pressure port via the regulating slide in an opening direction of the first outlet port and of the armature seat.

11. An oil pump regulating arrangement comprising:
a valve device comprising,
an actuator unit comprising,
an electromagnetic circuit comprising an armature configured to move in a translational manner,
a core,
a coil carrier,
a coil configured to be energized, the coil being arranged on the coil carrier, and
a flux guiding device, and

a valve unit comprising,
a valve housing comprising a transverse bore configured to serve as a regulating pressure port,
a regulating slide mounted in the valve housing, the regulating slide being configured to move axially,
an outlet port,
an inlet port, and
a control pressure port arranged between the inlet port and the outlet port;

a variable oil pump comprising,
a control chamber,
an oil sump,
wherein,
the control pressure port is in a fluid connection with the control chamber,
the outlet port is in a fluid connection with the oil sump, and
a discharge pressure of the oil pump is applied to the inlet port;

an internal combustion engine;
an oil line configured to branch off at the internal combustion engine; and
other units,
wherein, the regulating pressure port is connected with the oil line branching off at the internal combustion engine after an oil has flowed through the other units.

12. The oil pump regulating arrangement as recited in claim 11 , wherein,
the regulating slide comprises a regulating slide through-going bore,
the armature comprises an armature through-going bore,
the regulating slide through-going bore and the armature through-going bore fluidly connect the actuator room between the armature and the core with the first outlet port, and
the valve device is arranged in the oil sump.

13. The oil pump regulating arrangement as recited in claim 11 , wherein the valve device further comprises:
a clamping bush comprising axial bores, the clamping bush being fastened in the first outlet port; and
a readjusting spring supported on the clamping bush, the readjusting spring being configured to load the regulating slide towards the armature.

Assignees

• Pierburg Gmbh

Inventors

• Lappan Rolf
• Sadowski Christoph
• Romanowski Lukas
• Yilmaz Turgut

Classifications

• Y10T137/85978

  With pump · CPC title

• F01M1/16 Primary

  Controlling lubricant pressure or quantity (rendering machines or engines inoperative or idling on lubricant pressure failure F01M1/22) · CPC title

• F15B13/0442

  with proportional solenoid allowing stable intermediate positions · CPC title

• F04B53/1082

  magnetic · CPC title

• F16K27/029

  Electromagnetically actuated valves · CPC title