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:
Nov. 19, 2013
Filed:
Nov. 24, 2010
Gerhard Scheidig, Oberasbach, DE;
Gerhard Scheidig, Oberasbach, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A camshaft adjuster () for a camshaft (), by which cylinder valves () of an internal combustion engine are actuated, wherein through the use of the camshaft () late torques act on the camshaft adjuster () in a direction of later cylinder valve opening times when the cam is running-on, and opposing early torques act on the camshaft adjuster () in a direction of earlier opening times when the cam is running-off. The feeding and draining of pressure medium can be controlled by a control unit (), wherein a torque mode or a pump mode can be selectively adjusted by the control unit (), wherein primarily camshaft torques are used for building up pressure in the first partial chamber A or in the second partial chamber B in the torque mode, while the pressure build-up in the first partial chamber A or in the second partial chamber B in the pump mode is primarily by pressure medium provided by a pressure medium pump P.