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:
Sep. 18, 2000
Filed:
May. 10, 1999
Achim Koch, Tegernheim, DE;
Bernhard Klingseis, Regensburg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A device for adjusting a valve stroke course of a gas exchange valve includes a first camshaft which is coupled mechanically to a crankshaft, a second camshaft which is coupled mechanically to the first camshaft, an actuating drive which sets the phase of the second camshaft relative to the first camshaft and a transmission member which transmits the stroke of the camshafts to the gas exchange valve. An apparatus and a method for controlling the device have an actuating drive sensor which detects the angle of rotation of a drive shaft of the actuating drive. Furthermore, the apparatus has a determination unit which determines a quantity characterizing the valve stroke course as a function of the angle of rotation.