Patent · US Active

Camshaft having adjustable cams that can be oiled by means of pressure oil

US9273571B2 · kind B2 · utility

2Cited by

1References

10Claims

0Family size

Assignee

THYSSENKRUPP PRESTA TECCENTER AG · LI

Inventors

Uwe Dietel · Lichtentanne, DE
Bernd Mann · Lengefeld, DE
Jürgen Meusel · Kitzscher, DE

Key dates

Filing date	Mar 27, 2013
Grant date	Mar 1, 2016
Priority date	—
Expiry date	Mar 27, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2810/02
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to an adjustable camshaft for the valve gear of an internal combustion engine, comprising an outer shaft, on which at least one first cam is arranged and connected to the outer shaft in a rotationally fixed manner, and an inner shaft extending through the outer shaft, to which inner shaft at least one second cam is connected in a rotationally fixed manner, wherein the second cam connected to the inner shaft in a rotationally fixed manner has a cam hole and is rotatably supported on a seating point on the outer shaft. According to the invention, at least one oil groove is introduced at the seating point in the outer shaft and/or in the inner wall of the cam hole, into which oil groove oil is guided from a gap between the outer shaft and the inner shaft through at least one passage extending through the outer shaft.

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