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:
Aug. 22, 2006
Filed:
Mar. 01, 2004
Ralf Böhnig, Regensburg, DE;
Achim Przymusinski, Lappersdorf, DE;
Christian Stahl, Obertraubling, DE;
Ralf Böhnig, Regensburg, DE;
Achim Przymusinski, Lappersdorf, DE;
Christian Stahl, Obertraubling, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In a method for detecting rotational speed of an internal combustion engine (), a sector wheel () which is driven by the internal combustion engine () is scanned, the run of a specific segment of the sector wheel is detected, the duration of said segment-run is measured and a rotational speed value is determined therefrom, the duration of the run a specific segment is re-measured, a relative variation between two consecutive segment-runs is determined and the rotational speed value is determined therefrom.