| 摘要 |
A control device for an engine is configured to use a fuel containing alcohol, and the control device includes: an electronic control unit configured to: i) estimate a water content mixed in engine oil based on a history of a fuel injection amount during an operation of the engine; and ii) restrain freezing of water such that, when the water content thus estimated is a predetermined amount or more, the electronic control unit increases a mixing amount of the fuel into the engine oil as compared with a case where the water content thus estimated is less than the predetermined amount. |
