Patent · US Active

Hydraulic camshaft phaser

US8851034B2 · kind B2 · utility

3Cited by

1References

8Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Olaf Boese · Nuremberg, DE
Christoph Betz · Eschborn, DE

Key dates

Filing date	Jul 25, 2013
Grant date	Oct 7, 2014
Priority date	—
Expiry date	Jul 25, 2033

Classification

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

Abstract

A hydraulic camshaft phaser includes an outer rotor and an inner rotor rotationally adjustable and arranged concentrically about a common axis of rotation. At least one hydraulic chamber is formed between the outer rotor and the inner rotor, into which hydraulic chamber at least one connected vane extends from each of the outer rotor and the inner rotor, thereby dividing the hydraulic chamber into at least one pressure chamber pair formed by two pressure chambers. The inner rotor has a circular opening extending concentrically along the axis of rotation, a sealing portion being formed on the inner surface of the circular opening between two axial faces of the inner rotor, and the opening having a larger inner diameter on both sides of the sealing portion than in the sealing portion. The inner rotor is a sintered part, and the sealing portion of the inner rotor is calibrated.

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