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:
Sep. 27, 2005
Filed:
Jul. 08, 2003
Applicants:
Frank Weiss, Pentling/Glasslfing, DE;
Hong Zhang, Tegernheim, DE;
Inventors:
Frank Weiss, Pentling/Glasslfing, DE;
Hong Zhang, Tegernheim, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M015/00 ;
U.S. Cl.
CPC ...
Abstract
If, when a valve lift adjustment is triggered in an inlet valve of an internal combustion engine, no valve lift adjustment actually takes place due to a defect in the adjustment mechanism, the air/fuel ratio (lambda) or even a different operating parameter for example the engine speed and torque changes in an unintended manner. By monitoring this operating parameter the operation control device can deduce a defect in the adjustment mechanism.