| 摘要 |
In a hybrid type vehicle designed to use an engine (1) and motor generators (MG1, MG2) to drive the vehicle, the engine (1) is provided with a variable compression ratio mechanism (A) and a variable valve timing mechanism (B). When a required output of the engine (1) is a boundary output (PY) or less, minimum fuel consumption rate maintenance control satisfying the required output of the engine by changing the engine speed in a state maintaining the mechanical compression ratio at the maximum compression ratio is performed. When the required output of the engine is increased over the boundary output (PY), the mechanical compression ratio is lowered to the minimum mechanical compression ratio, then the engine output is increased.
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