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In a compression self-ignition gasoline internal combustion engine, a fuel injector through which a gasoline fuel is injected uninterruptedly within a combustion chamber of an engine cylinder is provided, a mixture of air and gasoline fuel within the combustion chamber is self-ignited through a comp

In a compression self-ignition gasoline internal combustion engine, a fuel injector through which a gasoline fuel is injected uninterruptedly within a combustion chamber of an engine cylinder is provided, a mixture of air and gasoline fuel within the combustion chamber is self-ignited through a compression action of a piston, an intake valve an open timing of the intake valve is set to a mid-way point through a suction stroke of the piston, a closure timing of an exhaust valve is set to a mid-way point through an exhaust stroke thereof, and gasoline fuel injection timing and quantity per combustion cycle injected through the fuel injector is controlled in such a manner that a first gasoline fuel injection is set during a minus valve overlap time interval during which both of exhaust and intake valves are closed and a second gasoline fuel injection is set during at least one of the suction stroke and the subsequent compression stroke.

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1. A compression self-ignition gasoline internal combustion engine, comprising:a fuel injector through which gasoline fuel is injected uninterruptedly within a combustion chamber of an engine cylinder; a piston of the engine cylinder whose compression action causes a mixture of air with gasoline fue

1. A compression self-ignition gasoline internal combustion engine, comprising:a fuel injector through which gasoline fuel is injected uninterruptedly within a combustion chamber of an engine cylinder; a piston of the engine cylinder whose compression action causes a mixture of air with gasoline fuel within the combustion chamber to be self-ignited; an intake valve whose open timing is set to a mid-way point through a suction stroke of the piston; an exhaust valve whose closure timing is set to a mid-way point through an exhaust stroke thereof; and a fuel injection controlling section that controls gasoline fuel injection timing and quantity per a combustion cycle injected through the fuel injector in such a manner as to set a first gasoline fuel injection to be carried out during a minus valve overlap interval during which both of the exhaust and intake valves are closed and as to set a second gasoline fuel injection to be carried out during at least one of the suction stroke and the subsequent compression stroke.