Patent · US Active

Camshaft adjustment device

US7681542B2 · kind B2 · utility

7Cited by

3References

18Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Enrico Paul · Berlin, DE
Uwe Reuter · Reichenbach, DE
Holger Rudzinski · Berlin, DE
Ulrich Stubbemann · Berlin, DE

Key dates

Filing date	Nov 30, 2007
Grant date	Mar 23, 2010
Priority date	—
Expiry date	Jun 13, 2028

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2001/34446
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In an adjustment device for adjusting the phase position of a camshaft relative to a crankshaft of an internal combustion engine which includes a hydraulic system for supplying hydraulic fluid under pressure to the adjustment device for the controlled admission to, and release thereof from, operating chambers of the adjustment device under the control of a control device including a control valve, the operating chambers are in communication with one another via control valves to permit flow of hydraulic fluid from one set of operating chambers to another by the varying torques effective on the camshaft or by controlling fluid supply to the operating chambers from the hydraulic fluid supply system.

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