| 摘要 |
PROBLEM TO BE SOLVED: To provide a device capable of achieving effects of improving a mixing condition of an air-fuel mixture in a combustion chamber, and further improving fuel consumption even in executing homogeneous combustion by cooling effect by evaporative latent heat of a fuel under an operating condition causing knocking.SOLUTION: A fuel injection control device of a direct injection type engine in which a fuel is directly injected into a combustion chamber, and homogeneous combustion is executed by forming a homogeneous air-fuel mixture in the combustion chamber, includes fuel injection gravity center setting means (111) for setting a gravity center position in fuel injection at an advance side under a condition of a rotating speed and load capable of setting an ignition timing near MBT, and setting the gravity center position in the fuel injection at a delay side with respect to the gravity center position in the fuel injection under the condition of the rotating speed and load capable of setting the ignition timing near MBT, under a condition of a rotating speed and load causing knocking when the ignition timing is set near MBT, on the basis of a rotating speed and load of the engine. |
