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:
Dec. 02, 2014
Filed:
Oct. 28, 2011
Applicants:
Kenichi Mori, Sagamihara, JP;
Hidetoshi Taniguchi, Zama, JP;
Yutaka Kaneko, Atsugi, JP;
Inventors:
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/00 (2006.01); G06F 17/00 (2006.01); G06F 19/00 (2011.01); B60W 10/11 (2012.01); B60K 23/08 (2006.01); F16H 13/14 (2006.01); B60W 10/06 (2006.01);
U.S. Cl.
CPC ...
B60W 10/11 (2013.01); B60K 23/08 (2013.01); F16H 13/14 (2013.01); B60W 10/06 (2013.01); B60K 2023/0816 (2013.01);
Abstract
A crankshaft is normally and reversely rotated at a constant speed, during which the singular points of crankshaft driving motor current responding to the drive torque change of the crankshaft are detected. A crankshaft rotational angle reference point is set based on the midpoint between the crankshaft rotational positions obtained when, among these singular points, singular points having the same type appear during the respective normal and reverse rotations. Therefore, the crankshaft rotational angle reference point can be reliably set regardless of the variations and errors.