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:
Oct. 31, 2017
Filed:
Jan. 30, 2015
Applicant:
Denso Corporation, Kariya, Aichi-pref., JP;
Inventors:
Tatsuya Fujita, Obu, JP;
Yoshinori Yamaguchi, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02N 11/08 (2006.01); F02N 15/02 (2006.01); F02N 15/06 (2006.01);
U.S. Cl.
CPC ...
F02N 11/0855 (2013.01); F02N 11/0851 (2013.01); F02N 11/087 (2013.01); F02N 11/0818 (2013.01); F02N 11/0825 (2013.01); F02N 15/02 (2013.01); F02N 15/063 (2013.01); F02N 15/067 (2013.01); F02N 2015/061 (2013.01); F02N 2300/2011 (2013.01);
Abstract
An electromagnetic switch device for a starter includes a pinion-pushing solenoid for pushing out a pinion toward a ring gear of an engine by a plunger thereof, and a motor-energizing solenoid for energizing the motor. The electromagnetic switch device is configured to detect a magnetic flux change in a magnetic circuit of the motor-energizing solenoid due to displacement or deformation of a core of the motor-energizing solenoid caused when the plunger of the pinion-pushing solenoid abuts against a stopper, to determine a timing to start current supply to the motor-energizing solenoid.