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:
Jan. 25, 2000
Filed:
Sep. 21, 1998
Shigeru Shiroyama, Tokyo, JP;
Motoi Hisamoto, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A starter for an engine equipped with a motor generator achieves lower cost and reduced sizes and capacities of circuit elements by reducing the assist load on the motor generator: it is provided with a motor generator (2) and a starting motor (10) connected to an engine (1); a startup state determining circuit (20) which determines the startup state from operating condition and selectively issues ON signals M1 and M2 to the motor generator and the starting motor; a key switch (6) which generates a start signal (Qe) at the time of starting the engine; and a temperature sensor 12 which generates a temperature signal (Te) corresponding to the temperature of the engine. The startup state determining circuit actuates only the motor generator as a motor in a startup state wherein the temperature signal indicates not less than a predetermined temperature corresponding to the warm-up state of the engine, while it actuates both the starting motor and the motor generator in a startup state wherein the temperature signal indicates a temperature below the predetermined temperature. And the startup state determining circuit actuates the starting motor first, then actuates the motor generator after a delay time corresponding to a rush current period of the starting motor has elapsed in the second startup state.