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:
Jul. 07, 2015
Filed:
Jan. 13, 2012
Rudolf Flierl, Hirschau, DE;
Manfred Kloft, Koenigslutter, DE;
Paul Gnegel, Lehre, DE;
Karsten Grimm, Aachen, DE;
Martin Nowak, Leverkusen, DE;
Rudolf Flierl, Hirschau, DE;
Manfred Kloft, Koenigslutter, DE;
Paul Gnegel, Lehre, DE;
Karsten Grimm, Aachen, DE;
Martin Nowak, Leverkusen, DE;
KOLBENSCHMIDT PIERBURG INNOVATIONS GMBH, Neckarsulm, DE;
Abstract
A mechanically controllable valve-train assembly includes a plurality of gas exchange valves, at least two cylinders assigned to each of the gas exchange valves, and valve-lift adjusting devices which each comprise a rotatable eccentric shaft. The eccentric shaft comprises at least one cam element and circumferential control surfaces which comprise at least one eccentric member. The eccentric shaft is driven by a drive device to set various valve-lift positions. A transmission assembly assigned to each of the gas exchange valves is mounted in a cylinder head via a bearing device so as to be movable and is operatively connected to one of the valve-lift adjusting devices and to a camshaft. The at least one cam element is operatively connected to a spring-loaded tappet element and is arranged outside the circumferential control surfaces and at a level of a zero-lift position of the circumferential control surfaces.