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:
May. 10, 2005
Filed:
Feb. 25, 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 throughflow of a specific segment of the sector wheel is detected, the duration of said segment-throughflow is measured and a rotational speed value is determined therefrom. Additionally, the throughflow of a specific part of the segment is detected before and after determination of the rotational speed value and a gradient of the duration of the partial segment throughflow is determined in order to update the rotational speed value.