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. 09, 2004
Filed:
Jul. 09, 2003
Applicant:
Inventors:
Frank Weiss, Pentling/Grasslfing, DE;
Hong Zhang, Tegernheim, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F00D 4/100 ;
U.S. Cl.
CPC ...
F00D 4/100 ;
Abstract
To avoid a sudden change in torque when switching over the valve lift of discretely adjustable inlet valves, the valve lift is firstly only adjusted for a section of cylinders, while the valve lift for the remaining section of cylinders is switched over after a delay. Therefore with each valve lift adjustment, only a slight change in torque has to be compensated by means of a corresponding change in the efficiency of the cylinders.