| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a controller of an automatic transmission for reducing shift shock at the time of torque reverse rotation. <P>SOLUTION: The automatic transmission is equipped with an input shaft 1 connecting to a power source and an output shaft connecting to a driving wheel and forward/astern change mechanism 3, provided between the input shaft and the output shaft, for controlling rotation direction of the output shaft for rotation direction of the input shaft. The forward/astern change mechanism has a first clutch 5 for engaging when transmitting rotation in a same direction of rotation of the input shaft to the output shaft, a second clutch for engaging when transmitting rotation in a reverse direction of rotation of the input shaft to the output shaft and pistons 9, 13 for controlling engagement and disengagement of the first and the second clutches. In the automatic transmission, a disk spring is provided between at least one of the first clutch and the second clutch and the pistons to transmit displacement of the pistons to the clutch. Spring constant of the disk spring changes according to the displacement stepwise. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
