| 摘要 |
An ECU executes a program including steps of estimating an oil temperature based on a water temperature sensed by a water temperature sensor, setting NE( 1 ) to a lower limit value of an engine revolution speed NE when the oil temperature is equal to or higher than a threshold THO( 0 ), setting NE( 2 ) (NE( 2 )<NE( 1 )) to the lower limit value of engine revolution speed NE when the oil temperature is lower than the threshold THO( 0 ), and controlling an engine driving an oil pump to keep the engine revolution speed NE equal to or higher than the set lower limit value.
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