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. 15, 2004
Filed:
Apr. 16, 2002
Applicant:
Inventors:
Makoto Taniguchi, Kariya, JP;
Koji Tanaka, Anjo, JP;
Assignee:
Denso Corporation, Kairya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 7/06 ; H02P 1/100 ; H02P 9/00 ;
U.S. Cl.
CPC ...
H02H 7/06 ; H02P 1/100 ; H02P 9/00 ;
Abstract
A vehicular power generation control device has a voltage control circuit, a power supply circuit and a power control circuit. The voltage control circuit controls the field current of a power generator by turning on and off a transistor. The power control circuit has an ignition switch closure detection circuit and an engine rotation detection circuit. When a closure of the ignition switch is detected by the ignition switch closure detection circuit, an operation of the rotation detection circuit is stopped. When the closure is not detected, the operation of the rotation detection circuit is started.