Patent · US Active

Adjustable camshaft

US9903236B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

THYSSENKRUPP PRESTA TECCENTER AG · LI

Inventors

Michael Kunz · Steinheim an der Murr, DE
Uwe Dietel · Lichtentanne, DE
Jürgen Meusel · Kitzscher, DE

Key dates

Filing date	Jun 24, 2014
Grant date	Feb 27, 2018
Priority date	—
Expiry date	Jun 24, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2303/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An adjustable camshaft can be used in a valve drive of an internal combustion engine. The adjustable camshaft may include an inner shaft rotatably supported by and concentric with an outer shaft. A cam element may be rotatably supported on the outer shaft such that the outer shaft extends through a cam bore of the cam element. The cam element may be rotatably-fixed to the inner shaft, in some cases, by way of a bolt. Further, a bearing sleeve that is rotatably-fixed to the cam element may be inserted within the cam bore such that a slide bearing gap is formed between the bearing sleeve and the outer shaft. Furthermore, in some examples the cam element may be a collared cam that has a cam base body and a cam collar adjacent to one another.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.