Patent · US Active

Camshaft for the valve drive of an internal combustion engine with a variable valve opening duration

US10316705B2 · kind B2 · utility

0Cited by

5References

9Claims

0Family size

Assignee

THYSSENKRUPP PRESTA TECCENTER AG · LI

Inventors

Uwe Dietel · Lichtentanne, DE
Bernd Mann · Lengefeld, DE
Michael Kunz · Steinheim an der Murr, DE
Martin Lehmann · Wohlen, CH

Key dates

Filing date	Jun 17, 2015
Grant date	Jun 11, 2019
Priority date	—
Expiry date	Sep 4, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2001/0476
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A camshaft for a valve drive of an internal combustion engine having a variable valve opening time may include an outer shaft and an inner shaft that extends through the outer shaft, with the inner shaft being held rotatably with respect to the outer shaft. The camshaft may further include a cam having a multiple-piece configuration, comprising a first part cam and a second part cam. Either the first part cam or the second part cam may be connected fixedly to the outer shaft so as to rotate with it, and the other part cam may be connected fixedly to the inner shaft so as to rotate with it. The camshaft may also include a bearing inner ring of a shaft bearing that is held on the outer shaft, with one of two second part cams comprising an axial attachment that forms at least one part of the bearing inner ring.

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