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. 20, 2007
Filed:
Mar. 17, 2004
Helmut Schön, Frastanz, AT;
Kai-uwe Keller, Kreuzlingen, CH;
Peter Kuhn, Weinheim, DE;
Gordon Köhne, Bregenz, AT;
Frank Obrist, Dornbirn, AT;
Christian Busch, Feldkirch, AT;
Helmut Schön, Frastanz, AT;
Kai-Uwe Keller, Kreuzlingen, CH;
Peter Kuhn, Weinheim, DE;
Gordon Köhne, Bregenz, AT;
Frank Obrist, Dornbirn, AT;
Christian Busch, Feldkirch, AT;
Thyssenkrupp Automotive AG, Bochum, DE;
Abstract
The invention relates to a device for the variable actuation of gas exchange valves for internal combustion engines, wherein at least one cam () pertaining to a camshaft () mounted in a housing rotates according to the engine speed. The cam () first drives an intermediate member () which performs a clear oscillating, rotary movement and has a rotational axis () that can be displaced in the housing parallel to itself along a curve of displacement (), said intermediate member comprising a control cam () having a lifting region () and actuating an output member () that, in turn, actuates at least one valve (). The aim of the invention is to enable one such device to be reliably controlled. To this end, the control cam () has a catch region (), and the intermediate member () is mounted on a bearing having an axis which corresponds to the rotational axis (), said bearing being arranged in such a way that it is guided in a forced manner and can be displaced parallel to the curve of displacement (), by means of an articulation () connected to the cylinder head or the housing or by a slide () that is guided in the housing in a positively locking manner. The invention also relates to a method for operating an internal combustion engine comprising a plurality of cylinders using at least one of the inventive devices.