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. 11, 2004
Filed:
May. 31, 2002
Shigeru Yamazaki, Odawara, JP;
Hirokazu Hirosawa, Odawara, JP;
Mikumi Corporation, Tokyo, JP;
Abstract
A power supply unit for an internal combustion engine capable of more stably providing drive power to a control circuit of the internal combustion engine and capable of more rapidly starting up the control circuit. The power supply unit may include a generator for generating electrical power, a main power supply circuit for regulating drive power, a capacitor for storing electrical power supplied by the main power supply circuit, a current control circuit for supplying electrical power to the control circuit other than the capacitor and various loads when the voltage output by the main power supply circuit is less than a first voltage, and supplying electrical power to the capacitor when the voltage output by the main power supply circuit is greater than or equal to the first voltage, and a discharge circuit for supplying electrical power accumulated at the capacitor to the control circuit and the various loads when the output voltage of the main power supply circuit falls to a voltage equal to or less than the capacitor voltage.