Schaeffler Technologies Ag & Co .kg

David Kohler

Jens Hoppe

Ali Bayrakdar

Markus Kinscher

A control valve for a hydraulic device, in particular central valve of a camshaft adjuster system for reciprocating-piston internal combustion engines, having a valve sleeve () which projects into a cavity of a camshaft (), wherein a displaceable control piston () is arranged in the valve sleeve (), which control piston is subjected to load on one side by a spring () which is adjoined by a pressure medium line. The cavity of the camshaft () is connected to a pressure medium supply channel of the reciprocating-piston internal combustion engine via at least one supply line () in the camshaft () and via a bearing, and the pressure medium line is in the form of a pressure medium feed line and the pressure medium feed line is connected to the pressure medium supply channel of the reciprocating-piston internal combustion engine via a pressure line () in the camshaft () and via the bearing.

Control valve for a camshaft adjuster system

A control valve () of a camshaft adjuster, which has a housing () having three pin openings (), spaced apart axially from each other, wherein two pin openings () are each connected to the tank connection (T) in two axial positions of the control piston () and the third pin opening () is not connected to the tank connection (T) in a third axial position of the control piston () in a fluid-conducting manner.

Control valve of a camshaft adjuster

A central valve () of a camshaft adjuster () is provided having a deep drawn housing ().

Central valve for a camshaft adjuster

A central valve () of a camshaft adjuster (), which has an additional hydraulic fluid passage, which is independent of the other hydraulic fluid passages to the other ports and does not communicate therewith.

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Egloffstein, Germany

David Kohler