| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a shock when switching between two kinds of operation modes having different states of first and second motor generators, in a vehicle having the motor generators. <P>SOLUTION: When a rotational speed of the first motor generator MG1 is reduced by a rise or the like of a vehicle speed V and when torque of the second motor generator MG2 becomes nearly zero when switching an assist operation mode Hi to an O/D operation mode, a first brake B1 is released, rotational synchronization control is performed by power generation control such that a rotational speed of MG2 nearly accords with an engine speed NE that is a rotational speed after the mode switching, and a clutch C1 is engaged when the rotational speed of MG2 is nearly equal to the engine speed NE to switch the operation model to the O/D operation mode. When performing engagement control of the clutch C1, the rotational speed of MG2 does not change, and the shock by inertia accompanying the rotational speed change is reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT |
