Patent · US Active

Device for varying the angular position of a camshaft relative to a crankshaft of an internal combustion engine

US8950369B2 · kind B2 · utility

0Cited by

10References

14Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Rainer Ottersbach · Bonn, DE
Juergen Weber · Erlangen, DE
Christoph Betz · Eschborn, DE

Key dates

Filing date	Sep 17, 2010
Grant date	Feb 10, 2015
Priority date	—
Expiry date	Dec 27, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A device for varying the angular position of a camshaft relative to a crankshaft of an internal combustion engine. The device has a drive element, which is driven by the crankshaft via a gearwheel and which is supported so that it can rotate in relation to the camshaft. The device also has at least two hydraulic chambers, to which a hydraulic fluid can be admitted in order to set a defined relative rotational position between the drive element and the camshaft, formed between the drive element and the camshaft. In order to produce an optimum axial support of the camshaft in terms of weight and cost, the gearwheel form a bearing face for the axial contact of the camshaft or of a component rotationally fixed to the latter.

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