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:
Mar. 09, 1999
Filed:
Jun. 21, 1996
Tooru Aoyama, Okazaki, JP;
Kouzi Tanaka, Anjo, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A vehicular generator unit includes an alternator and a generator control system that controls the alternator. The alternator is driven by an engine to achieve the power generation for charging a battery. The generator control system includes a transistor for intermitting a field current therethrough so as to control the power generation of the alternator. The system further includes a switching circuit which suppresses the duty of the transistor to a low value, where the alternator can not perform the power generation for the battery, until complete engine start-up or self-rotation is detected. On the other hand, when start-up is detected, the duty of the transistor is switched to a value where the alternator can perform the power generation for the battery. The duty of the transistor is then increased gradually to 100%.