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:
Aug. 07, 2007
Filed:
Jan. 27, 2006
Keiji Takahashi, Kariya, JP;
Keiji Takahashi, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
An electric power generation control apparatus has a bridge circuit, a voltage detection circuit, an electric generation control circuit, and an operation mode setting circuit. The bridge circuit has power transistors and diodes through which a field current is supplied to a vehicle alternator driven by a vehicle engine. The voltage detection circuit outputs an instruction signal regarding ON and OFF of supply of the field current so that the output voltage of the vehicle alternator becomes an adjusting voltage. The electric generation control circuit controls the ON and OFF of the power transistors according to the instruction signal from the voltage detection circuit. The operation mode setting circuit selects one of a field wheeling mode and a regenerative mode based on the OFF state of one power transistor, and also selects the regenerative mode when receiving a generation halt instruction form an ECU in the vehicle.