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. 08, 2012
Filed:
Mar. 03, 2009
Toshikazu Kizawa, Kariya-hi, JP;
Tomoya Okuno, Nishio, JP;
Toshikazu Kizawa, Kariya-hi, JP;
Tomoya Okuno, Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
A switching element, a duty deciding circuit, an LRC circuit, a voltage detecting circuit, and an LRC limit value deciding circuit are included. The switching elementoutputs a duty factor of a field winding of a vehicle power generator towards an ECU, via an FR terminal. The duty deciding circuit limits a speed at which the duty factor of the field winding increases to a predetermined limit value. The voltage detecting circuit detects a voltage at the FR terminal. The LRC limit value deciding circuit switches the limit value of the speed at which the duty factor increases based on the voltage value detected by the voltage detecting circuit.