Adjustable camshaft

US9926815B2 · kind B2 · utility

Assignee

• THYSSENKRUPP PRESTA TECCENTER AG · LI

Inventors

• Martin Lehmann · Wohlen, CH
• Bernd Mann · Lengefeld, DE
• Michael Kunz · Steinheim an der Murr, DE
• Uwe Dietel · Lichtentanne, DE
• Jürgen Meusel · Kitzscher, DE
• Manfred Muster · Bludesch, AT
• Markus Niederlechner · Schaanwald, LI
• Marko Curlic · Schaanwald, LI

Key dates

• Filing date: Nov 27, 2014
• Grant date: Mar 27, 2018
• Expiry date: Nov 27, 2034

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2001/0476
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An adjustable camshaft for a valve drive of an internal combustion engine may include an inner shaft extending through an outer shaft with a cam element disposed on the outer shaft. The cam element may be connected rotationally conjointly to the inner shaft. The cam element may have a shaft passage with an internal bearing surface, which, together with a bearing surface on an outer side of the outer shaft, forms a plain bearing arrangement for the rotatable arrangement of the cam element on the outer shaft. The bearing surface on the outer side of the outer shaft and/or the internal bearing surface of the shaft passage of the cam element may include one or more sections with a spherical shape.