Valve drive of an internal combustion engine

US8584639B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Harald Elendt · Meckenheim, DE
• Lars Pfutzenreuter · Werdohl, DE
• Detlef Axmacher · Iserlohn, DE
• Andreas Nendel · Prüm, DE
• Markus Schnepp · Werdohl, DE
• Mathias Boegershausen · Erlangen, DE
• Heiko Schmidt · Lappersdorf, DE

Key dates

• Filing date: Feb 1, 2010
• Grant date: Nov 19, 2013
• Expiry date: Sep 7, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49293
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valve drive of an internal combustion engine is provided, having a camshaft (1) which includes a carrier shaft (2) and a cam part (3), which is arranged thereon in a rotationally fixed manner and displaceable between two axial positions and which has at least one cam group of directly adjoining cams (5, 6) having different cam elevations and an axial gate (8) having two cam tracks (9, 10) that extend axially along the circumference in opposing directions, and further having an actuating element (11) that can be coupled to the axial gate for displacing the cam part in the direction of both cam tracks. The cam tracks are arranged one behind the other in the circumferential direction of the axial gate (8).