Actuator for hydraulic valve of cam phaser and hydraulic valve with actuator for cam phaser

US9567878B2 · kind B2 · utility

Assignee

• Hilite Germany GmbH · DE

Inventors

• Matthias Lang · Berching, DE
• Dietmar Schulze · Kandern, DE

Key dates

• Filing date: Jun 25, 2015
• Grant date: Feb 14, 2017
• Expiry date: Oct 21, 2035

Classification

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

Abstract

An actuator for a hydraulic valve of a cam phaser, the actuator including a magnet housing receiving a magnetized metal sleeve and a coil that is radially enveloped by the magnetized metal sleeve generating a magnetic field, wherein the coil is fixated in a non-magnetizable coil carrier that is positioned in a cavity of the magnet housing, wherein the coil carrier at least partially envelops a pole core and a pole core yoke that is axially offset from the pole core, wherein the pole core and a pole core yoke are positioned so that they radially define a non-magnetic sleeve, wherein the non-magnetic sleeve forms a divider wall between the cavity of the magnet housing and an inner cavity of the non-magnetic sleeve.