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:
Jun. 30, 2015
Filed:
Feb. 23, 2011
Applicants:
Matthias Cwik, Stuttgart, DE;
Markus Roessle, Stuttgart, DE;
Ewald Mauritz, Weissach, DE;
Stefan Tumback, Stuttgart, DE;
Inventors:
Matthias Cwik, Stuttgart, DE;
Markus Roessle, Stuttgart, DE;
Ewald Mauritz, Weissach, DE;
Stefan Tumback, Stuttgart, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/04 (2006.01); G01M 13/02 (2006.01); F02N 11/08 (2006.01); G01P 3/64 (2006.01);
U.S. Cl.
CPC ...
G01M 13/02 (2013.01); F02N 11/0855 (2013.01); F02N 2200/022 (2013.01); F02N 2300/2006 (2013.01); G01P 3/64 (2013.01);
Abstract
A method determines a rotational speed of a driveshaft of an internal combustion engine. The rotating driveshaft assumes different rotary positions at different times. An average gradient of rotary speed for the driveshaft is determined at at least two rotary positions. Subsequently, an average rotational speed for the driveshaft is obtained from a past average gradient of rotary speed at at least one later point in time.