Central valve of a camshaft adjuster of an internal combustion engine

US8893676B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Jens Hoppe · Erlangen, DE
• Ali Bayrakdar · Pegnitz, DE

Key dates

• Filing date: Jun 4, 2010
• Grant date: Nov 25, 2014
• Expiry date: Nov 20, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86702
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

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.