Patent · US Active

Control valve for a camshaft adjuster system

US9422838B2 · kind B2 · utility

3Cited by

1References

4Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

David Kohler · Windsor, US
Jens Hoppe · Erlangen, DE
Ali Bayrakdar · Pegnitz, DE

Key dates

Filing date	Jul 12, 2013
Grant date	Aug 23, 2016
Priority date	—
Expiry date	Jul 12, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/8663
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control valve for a hydraulic device, in particular central valve of a camshaft adjuster system for reciprocating-piston internal combustion engines, having a valve sleeve (1) which projects into a cavity of a camshaft (8), wherein a displaceable control piston (3) is arranged in the valve sleeve (1), which control piston is subjected to load on one side by a spring (4) which is adjoined by a pressure medium line. The cavity of the camshaft (8) is connected to a pressure medium supply channel of the reciprocating-piston internal combustion engine via at least one supply line (16) in the camshaft (8) and via a bearing, and the pressure medium line is in the form of a pressure medium feed line and the pressure medium feed line is connected to the pressure medium supply channel of the reciprocating-piston internal combustion engine via a pressure line (12) in the camshaft (8) and via the bearing.

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