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:
Mar. 09, 2004
Filed:
Apr. 03, 2002
Soichi Yoshinaga, Nagoya, JP;
Seiji Hayashi, Okazaki, JP;
Denso Corporation, Kariya, JP;
Abstract
A generator-motor for a vehicle includes a rotor having a rotor core and a plurality of permanent magnets and a stator having a stator core and an armature winding. The rotor core has a plurality of axially extending through-holes in a circumferential direction thereof to accommodate the permanent magnets and to increase circumferential magnetic reluctance thereof to form a plurality of auxiliary pole portions disposed between the through holes. The stator core has a plurality of teeth radially extending at equal intervals in a circumferential direction to face the rotor core. Each of auxiliary pole has a circumferential width that is 30%-55% of a circumferential width of each tooth. The minimum torque of the generator motor can be increased while torque ripple is reduced.