Control apparatus for turbocharged diesel engine

A control apparatus for a diesel engine mounted on a vehicle, wherein the diesel engine is equipped with a fuel injection valve for injecting fuel into a combustion chamber thereof, and a turbocharger having a turbine provided in an exhaust passage thereof, the control apparatus comprising an engine start controller which is configured, when a given engine stop condition is satisfied, to automatically stop the diesel engine, and, when a given engine restart condition is satisfied, to execute a given engine restart control for combusting fuel supplied to the combustion chamber through the fuel injection valve,

• wherein the engine start controller is operable,
• when an engine restart condition associated with a demand for vehicle start is satisfied, to execute a split-injection control to perform a main injection for injecting fuel at a timing around a top dead center of a compression stroke, and a post injection for injecting fuel in an expansion stroke following the main injection, during the engine restart control, and,
• when an engine restart condition nonassociated with the demand for vehicle start is satisfied, to execute the engine restart control to perform only the main injection without executing the split-injection control.