| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mode transition control method for hybrid transmission, capable of smoothly performing mode transition even if a change is made in the middle of the mode transition. <P>SOLUTION: In this mode transition control method for a hybrid transmission having a continuously-variable transmission ratio mode and a fixed transmission ratio mode, when a target mode is changed to the continuously-variable transmission ratio mode during mode transition from the continuously-variable transmission ratio mode to the fixed transmission ratio mode, the mode is returned to the original mode when the mode transition is in a state between preparatory gear shift and hydraulic engagement, and transition to the continuously-variable transmission ratio mode is started after transition to the fixed transmission ratio mode is completed when the mode transition is in a state between hydraulic engagement to torque redistribution. When the target mode is changed to the fixed transmission ratio mode during transition from the fixed transmission ratio mode to the continuously-variable transmission ratio mode, the mode is returned to the original fixed transmission ratio mode when the transition is in a state between preparatory torque distribution and hydraulic disengagement, and transition to the fixed transmission ratio mode is started after transition to the continuously-variable transmission ratio mode is completed when the transition is in a state between hydraulic disengagement to completion gear shift. <P>COPYRIGHT: (C)2007,JPO&INPIT |
