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:
May. 13, 2008
Filed:
Nov. 24, 2004
Yasuki Ishikawa, Tokyo, JP;
Wataru Takanami, Ebina, JP;
Yasuki Ishikawa, Tokyo, JP;
Wataru Takanami, Ebina, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A control device for a motor-driven 4WD (four-wheel-drive) vehicle includes a 42v alternator (motor-generator) driven by an engine to generate three-phase AC power with 42 volts, a step-up and step-down inverter rectifying and stepping down three-phase AC power, generated by the 42v alternator, to DC power with 14 volts, and a 14V battery supplied with and charged with DC power with 14 volts outputted from the step-up and step-down inverter. A diode bridge circuit rectifies AC power with 42 volts, generated by the 42V alternator, to DC power by which a motor is rotationally driven to render the vehicle operative in 4WD drive mode.