VEHICULAR AUTOMATIC TRANSMISSION EQUIPPED WITH PLANETARY GEAR MECHANISM

摘要

PROBLEM TO BE SOLVED: To improve durability of a centrifugal clutch and driving feeling in a vehicular automatic transmission having a plurality of transmission units equipped with a planetary gear mechanism and the centrifugal clutch. SOLUTION: In the transmission M, a clutch 70 of a transmission unit M1 includes a centrifugal weight 76 for making a plurality of clutch plates capable of being mutually approached and separated abut with each other. A clutch 170 of a transmission unit M2 includes a centrifugal weight 176 for making a plurality of clutch plates capable of being mutually approached and separated abut with each other. A control device 13 controls an input rotation speed so as to change the input rotation speed to be shifted to the input rotation speed for canceling a semi-connection state when continuation time of the semi-connection state detected by a clutch connection state detection means 13b for detecting that at least one of the clutch 70 and the clutch 170 is in the semi-connection state exceeds the prescribed time. COPYRIGHT: (C)2011,JPO&INPIT