Central valve of a camshaft adjuster of an internal combustion engine
AssigneeSchaeffler Technologies AG & Co. KG
InventorsJens Hoppe, Ali Bayrakdar
Life of this patent
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Abstract
A central valve of a camshaft adjuster of an internal combustion engine, which has a valve housing, a control piston, and a mounting flange. The valve housing is arranged, at least in part, inside a receptacle inside the camshaft adjuster. The valve housing has at least one inflow connection, one outflow connection, and one working connection. The control piston is arranged axially slidable inside the valve housing. The pressure fluid, which flows to and from the camshaft adjuster, can be controlled by the suitable positioning of the control piston inside the valve housing. Also, the mounting flange is fixedly connected to a wall section of the receptacle, thus determining the axial position of the valve housing relative to the camshaft adjuster.
Claims13
A central valve of a camshaft adjuster of an internal combustion engine, comprising:
- a valve housing at least partially arranged within a receptacle, which has a wall and is arranged within the camshaft adjuster, the valve housing having at least one inlet connection, one outlet connection and one working connection;
- a control piston arranged in an axially displaceable manner within the valve housing so that streams of pressure medium to and from the camshaft adjuster can be controlled by positioning the control piston within the valve housing;
- and
- a fastening flange, which defines an axial position of the valve housing relative to the camshaft adjuster, fixedly connected to the wall of the receptacle,
- wherein the fastening flange includes a cylindrical portion with a cylindrical bore and having a first axial end, a second axial end, a collar disposed at the first axial end and an end stop for the control piston disposed at the first axial end, and the valve housing is a separate cylindrical element received in the cylindrical bore.
Dependencies are inferred from the claim text.