| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the increased torque amount of an output side motor/generator for measure against shock when a shift mode is changed from a low continuously variable shift mode to a high continuously variable shift mode. <P>SOLUTION: When the shift mode is changed from the low continuously variable shift mode (Low-iVT) to the high continuously variable shift mode (High-iVT) in a state where a large acceleration is requested, an engine rotational speed Ne is maintained at a maximum output rotational speed Npmax as shown in the figure (b) and the rotational speed Nm2 of the output side motor/generator is lowered as a vehicle speed VSP is increased. At the vehicle speed V1 where Nm2=0, the engine rotational speed Ne is raised from the maximum output rotational speed Nepmax to a prescribed value Nelh while maintaining Nm2=0, and the mode is changed to a vehicle speed V3 where Ne=Nelh. Accordingly, the mode is changed on a higher speed side V2 (after a static drive force is reduced) of the vehicle speed V1 where Nm2 is zero as shown in the figure (a). Thus, since the increased torque amount of the output side motor/generator for measure against shock is reduced, cost can be reduced and easiness of layout can be increased by reducing its size. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
