| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable the safe travel of a vehicle even by manually shifting to a third-, second-, or L-speed range during travelling at a 6th-speed in a D-range. <P>SOLUTION: An inhibitor valve 22 supplies 32L pressure from a manual valve 21 to a second hydraulic pressure chamber 26d of a fourth shift valve 26 in a state that a second on-off solenoid valve S2 is not energized. The inhibitor valve 22 interrupts the 32L pressure from the manual valve 21 to inhibit the supply low speed range limited 32L pressure to the second hydraulic pressure chamber 26d of the fourth shift valve 26 in a state that the second on-off solenoid valve S2 is energized. When the manual valve 21 is operated from a D-range of a 6th-speed or a predetermined speed or higher into a low-speed range (third-, second-, or L-speed range), an electronic control part 4 controls the second on-off solenoid valve S2 to be energized to constitute a 5th-speed until it gets to a speed lower than a predetermined speed. <P>COPYRIGHT: (C)2008,JPO&INPIT |
