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:
Feb. 28, 2003
Yuusuke Minagawa, Kanagawa, JP;
Toshikazu Oshidari, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In a hybrid automatic transmission of a hybrid electric vehicle equipped with a differential device having two-degree-of-freedom and at least four rotating members respectively connected to a prime mover as an input element, a drive train as an output element, and first and second motor-generators. A specified relationship among inertias of rotating systems relating to the prime mover, output element, and first and second motor-generators, a first lever ratio of a distance between an input element and the first motor-generator to a distance between the input and output elements, and a second lever ratio of a distance between the output element and the second motor-generator to the distance between the input and output elements is determined, so that a center of gravity of a lever on an alignment chart of the hybrid transmission is laid out on the output element or between the output element and the second motor-generator.