| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a structure in which any gross slip as a harmful slip does not occur at each traction part even when manually changing the transmission gear ratio while suppressing degradation of transmission efficiency. <P>SOLUTION: The hydraulic pressure to be introduced in a pressing device is set to be a value of required pressing force to be determined according to an actual transmission gear ratio that is a transmission gear ratio at the time or a value of a target pressing force to be determined according to a transmission gear ratio selected on the basis of operation of a switch for gear ratio switching whichever is greater, during a period of time after the switch for gear ratio switching is manually operated and before the transmission gear ratio is actually changed. As a result, occurrence of any gross slip can be prevented at each traction part during the speed change even when any excessive margin is not set for the pressing force. <P>COPYRIGHT: (C)2012,JPO&INPIT |
