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.

Date of Patent:
Dec. 19, 2017

Filed:

Apr. 30, 2013
Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Hiroyuki Saito, Tokyo, JP;

Hideaki Tani, Tokyo, JP;

Satoshi Wachi, Tokyo, JP;

Takafumi Hara, Tokyo, JP;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/416 (2006.01); G01R 31/36 (2006.01); F02N 11/08 (2006.01); F02D 29/02 (2006.01);
U.S. Cl.
CPC ...
G01R 31/3693 (2013.01); F02N 11/0862 (2013.01); G01R 31/3662 (2013.01); F02D 29/02 (2013.01); F02N 2200/06 (2013.01); F02N 2250/02 (2013.01); G01R 31/3624 (2013.01); G01R 31/3651 (2013.01); G01R 31/3675 (2013.01);
Abstract

It is possible to accurately estimate a starting current and calculate a precise starting minimum voltage without being influenced by a change in a storage battery state or a starting state by updating a current/voltage correlation characteristic corresponding to a deterioration state of a storage battery each time a current/voltage data set obtained when a starter is driven is newly stored in association with the deterioration state of the storage battery and by calculating the starting current corresponding to a present voltage immediately before start in accordance with the current/voltage correlation characteristic corresponding to the present deterioration state of the storage battery when determination is made as to whether or not to drive the starter.


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