Internal combustion engine having a hydraulic device for adjusting the rotation angle of a camshaft relative to a crankshaft

US7222597B2 · kind B2 · utility

Assignee

• Ina Schaeffler KG · DE

Inventors

• Jochen Auchter · Weisendorf, DE
• Andreas Strauss · Forchheim, DE
• Lutz Witthoft · Herzogenaurach, DE
• Michael Busse · Herzogenaurach, DE
• Dirk Heintzen · Hagen, DE
• Jurgen Plate · Gerhardshofen, DE

Key dates

• Filing date: Jun 14, 2005
• Grant date: May 29, 2007
• Expiry date: Jun 14, 2025

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2001/34446
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A hydraulic device for adjusting the rotation angle of a camshaft relative to a crankshaft in an internal combustion engine. The device has a rotor, with blades arranged around its periphery. A stator is connected in a rotationally secure manner to a drive wheel. The rotor and the stator together form pressure chambers, which can be filled with hydraulic fluid via a hydraulic fluid system, in which there is disposed a volume accumulator.