The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2005
Filed:
Jul. 23, 2004
Matthias Heinze, Berlin, DE;
Kai Lehmann, Ludwigsfelde, DE;
Jens-uwe Plank, Berlin, DE;
Jörg Rösener, Berlin, DE;
Matthias Heinze, Berlin, DE;
Kai Lehmann, Ludwigsfelde, DE;
Jens-Uwe Plank, Berlin, DE;
Jörg Rösener, Berlin, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
In a camshaft adjustment control device for an internal combustion engine arranged in the drive train for a camshaft, with an inner body connected to the camshaft and an outer body rotatable relative to the inner body, and a control space between the inner and the outer bodies to which hydraulic fluid can be supplied for adjusting the relative angular positions of the inner body connected to the camshaft and the outer body driven by the crankshaft, the inner body is mounted to the camshaft by a bolt having a central bore in which a control spool valve is disposed controlling the flow of fluid to and from the control space and a check valve is arranged in the supply lines of the hydraulic fluid to the control spool valve which check valve opens when a certain pressure is applied thereto.