Hydraulic valve for cam phaser

US10982572B2 · kind B2 · utility

Assignee

• ECO Holding 1 GmbH · DE

Inventors

• Andreas Knecht · Herrenberg, DE
• Gordon Neudoerfer · Aschersleben, DE

Key dates

• Filing date: Apr 20, 2020
• Grant date: Apr 20, 2021
• Expiry date: Apr 20, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2301/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A hydraulic valve for a cam phaser, the hydraulic valve including a housing; a hollow cylindrical piston that is axially movable in a central opening of the housing that extends along a longitudinal axis of the housing and that includes shoulders; a supply connection configured to feed a hydraulic fluid; a first operating connection; a second operating connection; a tank connection, wherein one of the first operating connection and the second operating connection is connectable with the supply connection and another of the first operating connection and the second operating connection is connectable with the tank connection as a function of an axial position of the hollow cylindrical piston, wherein the hollow cylindrical piston includes a feed channel configured to connect with the supply connection and a drain channel configured to connect with the tank connection, wherein a divider wall is configured between the supply connection and the tank connection.