Patent · US Active

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

US8479695B2 · kind B2 · utility

1Cited by

0References

6Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Rainer Ottersbach · Bonn, DE
Jurgen Weber · Oberhausen, DE
Christoph Betz · Eschborn, DE

Key dates

Filing date	Sep 17, 2010
Grant date	Jul 9, 2013
Priority date	—
Expiry date	Sep 17, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2820/041
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A device for varying the relative angular position of a camshaft (2) with respect 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 mounted rotatably with respect to the camshaft. Between the drive element and the camshaft, there is at least two hydraulic chambers which can be acted upon with a pressure fluid in order to set a defined relative rotary position between the drive element and the camshaft.

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