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:
Feb. 05, 2002
Filed:
Sep. 08, 2000
Martin Kerkau, Ötisheim, DE;
Matthias Hofstetter, Ringsheim, DE;
Dr. Ing. h.c.F. Porsche AG, Weissach, DE;
Abstract
Internal combustion engine having a device for the valve timing, the valve timing periods and the valve lifts being continuously changeable and being definable as a function of the operating parameters of the internal combustion engine, characterized in that the switching thresholds for changing the valve timing periods and the valve lifts, which are obtained from a characteristic diagram extending over the rotational speed and the load, are weighted as a function of the gear and/or of the temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile