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. 25, 2007
Filed:
Jul. 12, 2005
Hermann Hoffmann, Stuttgart, DE;
Timothy Mark Lancefield, Shipston on Stour, GB;
Martin Lechner, Stuttgart, DE;
Ian Methley, Witney, GB;
Hermann Hoffmann, Stuttgart, DE;
Timothy Mark Lancefield, Shipston on Stour, GB;
Martin Lechner, Stuttgart, DE;
Ian Methley, Witney, GB;
Mahle Ventiltrieb GmbH, Stuttgart, DE;
Mechadyne PLC, Kirtlingdon, Oxfordshire, GB;
Abstract
A gas exchange valve of an internal combustion engine, has valve lifting movements with valve displacement curves and a control unit. To this end, a control unit is provided for operation of at least one valve, in particular a gas exchange valve of an internal combustion engine, in which the valvelifting movement of the at least one valve () is generated by superimposing two synchronously rotating cam profiles acting mechanically on a lift operating element (). The two cam profiles () have specially shaped areas by means of which, when superimposed to form one of the two cam profiles (), at least one additional valve displacement (ZV) can be generated on the whole in addition to a main valve displacement movement (HV) over a full revolution of each of these cam profiles ().