20110056189 | CONTROL DEVICE FOR VEHICLE - In a vehicle having mounted therein an engine including an injector that directly injects fuel into a cylinder, in the case in which a warm-up control required condition is established, catalyst warm-up control is executed if an amount of fuel diluted in oil is low, or even if the amount of fuel diluted in oil is high, when the temperature of the engine oil is less than the fuel volatilization temperature. In contrast, even in the case in which the warm-up control required condition is established, if the amount of fuel diluted in oil is greater than or equal to a determination value, and furthermore the temperature of the engine oil is greater than or equal to the fuel volatilization temperature, there is the possibility of negative influence on exhaust emissions, and therefore the catalyst warm-up control is prohibited. | 03-10-2011 |