| 摘要 |
An automatic transmission includes a gear power train and a V-belt type continuously variable power train which are connected in parallel between input and output shafts. A relatively low hydraulic fluid pressure is supplied to a follower pulley cylinder chamber when the V-belt type continuously variable power train is rendered inoperable, whereas a sufficiently high hydraulic fluid pressure is supplied to the follower pulley cylinder chamber when the V-belt type continuously variable power train is rendered operable, inducing a sufficiently high force which the follower pulley grips the V-belt with. |
