Control device for cylinder-injection and spark-ignition type internal combustion engines

A control apparatus for a cylinder-injection spark-ignition internal combustion engine, in which a fuel is injected directly into a combustion chamber of the internal combustion engine, comprising:

• operation state detecting means for detecting an operation state of the internal combustion engine;
• injection mode setting means for setting one of a first injection mode for injecting the fuel mainly in a suction stroke and a second injection mode for injecting the fuel mainly in a compression stroke, in accordance with said operation state;
• combustion parameter setting means for setting a value of at least one of parameters, that influence a combustion state in the combustion chamber, at a value for an injection mode set by said injection mode setting means;
• combustion parameter changeover means for changing the value of at least one of parameters, from a parameter value for an injection mode before a mode change to a parameter value for an injection mode after the mode change, when a request for an injection mode change is set by said injection mode setting means;
• and
• combustion state control means for controlling the combustion of the internal combustion engine in accordance with the parameter value set by said combustion parameter setting means and changed by said combustion parameter changeover means in response to the injection mode change request,
• wherein said combustion parameter changeover means changes the parameter value from the parameter value before mode change into the parameter value after mode change at a timing corresponding to the injection mode before change and the injection mode after change when the injection mode change request is discriminated.