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:
Feb. 26, 2002
Filed:
Jun. 28, 2000
Itsuro Muramoto, Kanagawa, JP;
Taketoshi Kawabe, Kanagawa, JP;
Shin-ichiro Joe, Kanagawa, JP;
Yasushi Narita, Kanagawa, JP;
Hiromasa Sakai, Kanagawa, JP;
Motoharu Nishio, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An infinite speed ratio continuously variable transmission is provided with a continuously variable transmission ( ), fixed speed ratio transmission ( ), planetary gear set ( ), power recirculation clutch ( ) and direct clutch ( ). A target speed ratio of the infinite speed ratio continuously variable transmission is set based on a vehicle speed and an accelerator pedal depression amount. When the target speed ratio varies beyond a rotation synchronous point, a control unit ( ) assigns an order of priority to control of the power recirculation clutch ( ) and direct clutch ( ), and control of the speed ratio of the continuously variable transmission ( ), and thereby causes a real speed ratio of the infinite speed ratio continuously variable transmission to vary in the same direction until it reaches the target speed ratio (S , S , S , S , S , S ).