| 摘要 |
Lockup mechanism switching control for a torque converter for switching between a lockup-off state and a lockup-on state and compression ratio variable control for an internal combustion engine are performed in a coordinated manner. For example, when switching the compression ratio from a high compression ratio to a low compression ratio and switching a lockup mechanism of the torque converter from the lockup-off state to the lockup-on state, switching to the lockup-on state is performed after the compression ratio has shifted to a low compression ratio side. Accordingly, since the lockup mechanism of the torque converter does not enter the lockup-on state in a high compression ratio state, generation of vehicular vibration (a booming noise) can be suppressed. |
