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. 19, 2019
Filed:
Jan. 07, 2015
Jatco Ltd, Fuji-shi, Shizuoka, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Seiichiro Takahashi, Isehara, JP;
Hiroki Iwasa, Sagamihara, JP;
Hironori Miyaishi, Sagamihara, JP;
Sunghoon Woo, Atsugi, JP;
Takaaki Matsui, Fuji, JP;
Tomoaki Honma, Isehara, JP;
Yoshio Yasui, Fuji, JP;
Yuta Suzuki, Sagamihara, JP;
Masayuki Mannen, Fuji, JP;
Susumu Saitou, Moka, JP;
JATCO LTD, Fuji-shi, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
Abstract
Control device for continuously variable transmission has continuously variable transmission mechanism (CVT) transmitting power with belt () wound around primary and secondary pulley (); torque convertor () having pump impeller (), turbine runner () and lock-up clutch (); and control unit () controlling lock-up clutch () to predetermined engagement state and controlling the CVT to predetermined transmission ratio, according to travelling condition. Control unit () is configured to, when shifting lock-up clutch () from disengagement to engagement state, control transmission ratio of CVT so that when rotation speed difference (ΔN) between engine speed (Ne) and turbine speed (Nt) that is rotation speed of turbine runner is predetermined rotation speed difference (ΔN) or less, turbine speed (Nt) approaches engine speed (Ne) more than turbine speed (Nt) of case where control of transmission ratio of CVT, which is set according to travelling condition during shift of lock-up clutch (), is continued.