Electrically driven camshaft adjuster

US7597075B2 · kind B2 · utility

Assignee

• Schaeffler KG · DE

Inventors

• Jens Schafer · Herzogenaurach, DE
• Mike Kohrs · Wilthen, DE
• Martin Steigerwald · Herzogenaurach, DE
• Jonathan Heywood · Hirschaid, DE

Key dates

• Filing date: Jun 15, 2005
• Grant date: Oct 6, 2009
• Expiry date: Jun 3, 2026

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2820/032
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Adjustment device (1) for adjusting a relative rotational angle position of a camshaft (3) relative to a crankshaft of an internal combustion engine is provided. The adjusting device includes a crankshaft-fixed drive part (4) and a camshaft-fixed driven part (5). The adjustment device (1) has an adjustment motor (2) as a primary adjustment device and an auxiliary drive (11) as a secondary adjustment device. When the adjusting motor fails, the camshaft (3) can be moved into a fixed rotational angle position, an emergency running position, by the auxiliary drive (11).