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:
May. 20, 2003

Filed:

Jun. 27, 2001
Applicant:
Inventors:

Shigetaka Kuroda, Wako, JP;

Shigeru Aoki, Wako, JP;

Masaaki Kaizuka, Wako, JP;

Shunichi Tsuzuki, Wako, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02N 1/700 ;
U.S. Cl.
CPC ...
F02N 1/700 ;
Abstract

A system for automatically stopping and starting an engine of a vehicle which enables proper determination of whether the stopping of the engine is possible, in accordance with the state of a battery. A power brought out from the battery by auxiliaries is subtracted from a power generated by a generator, thereby calculating a difference corresponding to a power for actually charging the battery. By sequentially adding the value, an integrated value of power charged in the battery is calculated. Meanwhile, a value of a known power WBRK consumed by a brake lamp plus a current power consumed by the auxiliaries is multiplied by a beforehand determined target value of idling-stoppage duration, thereby evaluating an evaluated integrated value of power consumed by the battery during stoppage of an idling. If the integrated value is not less than the evaluated integrated value, the stopping of the engine E is permitted.


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