Hydraulic valve and cam phaser
First Claim
1. A hydraulic valve for a cam phaser, the hydraulic valve, comprising:
- a bushing element, includinga longitudinal channel,a pressure medium connection that is arranged at an end of the longitudinal channel,a first hydraulic connection, a second hydraulic connection and a third hydraulic connection that originate from the longitudinal channel, anda pressure balanced hollow piston that is arranged axially moveable within the longitudinal channel,wherein the hydraulic valve includes a check valve at the pressure medium connection,wherein the check valve includes a sleeve shaped carrier, a valve seat plate and at least one blocking element that is movable between an open position and a closed position, andwherein the valve seat plate has plural pass through openings which are closable by the at least one blocking element in a closed position.
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Accused Products
Abstract
A hydraulic valve for a cam phaser, the hydraulic valve including a bushing element, including a longitudinal channel, a pressure medium connection that is arranged at an end of the longitudinal channel, three hydraulic connections that originate from the longitudinal channel, and a pressure balanced hollow piston that is arranged axially moveable within the longitudinal channel, characterized in that the hydraulic valve includes a check valve at the pressure medium connection and a cam phaser including a stator and a rotor that is rotatable relative to the stator between a first end position and a second end position for adjusting a cam shaft of an internal combustion engine and a hydraulic valve for controlling a rotation of the rotor.
14 Citations
11 Claims
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1. A hydraulic valve for a cam phaser, the hydraulic valve, comprising:
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a bushing element, including a longitudinal channel, a pressure medium connection that is arranged at an end of the longitudinal channel, a first hydraulic connection, a second hydraulic connection and a third hydraulic connection that originate from the longitudinal channel, and a pressure balanced hollow piston that is arranged axially moveable within the longitudinal channel, wherein the hydraulic valve includes a check valve at the pressure medium connection, wherein the check valve includes a sleeve shaped carrier, a valve seat plate and at least one blocking element that is movable between an open position and a closed position, and wherein the valve seat plate has plural pass through openings which are closable by the at least one blocking element in a closed position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification