| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable running without involving rapid downshift and enable shifting into forward, reverse, and neutral even when any one of the solenoid valves controlling individual hydraulic servos fails in an output state or non-output state. <P>SOLUTION: A changeover valve 22 which can be switched by a control solenoid valve 23 is interposed between the individual linear solenoid valves SL1 to SL6 and individual hydraulic servos C-1 to C4, B-1, B-2. Even if one of the linear solenoid valves fails, the outputs from non-failing linear solenoid valves are distributed, thereby achieving a forward high-speed stage and a reverse stage. <P>COPYRIGHT: (C)2009,JPO&INPIT |
