Patent ID: 7328684

Claim:
A control device for an internal combustion engine provided with a fuel injection mechanism for injecting a fuel into a cylinder, said internal combustion engine including an intake manifold formed on one side of a cylinder head when a cylinder, in which an axial center of a cylinder bore is aligned with a vertical line, is viewed from a side, an exhaust manifold formed on a side opposite to said intake manifold, a piston making up-down movement through said cylinder bore, and a spark plug of which discharge portion is exposed in said cylinder bore, the fuel injected from said fuel injection mechanism forming a spray in an inverted V-shape with said discharge portion lying between two prongs of the spray when said cylinder is viewed two-dimensionally, comprising: a detection unit for detecting a load state of said internal combustion engine; a fuel pressure control unit for varying a pressure of the fuel supplied to said fuel injection mechanism based on said load state; and an air amount control unit for varying an amount of air suctioned into said cylinder based on said load state, wherein said fuel pressure control unit controls said pressure of the fuel such that it is raised so that the two prongs of the spray in an inverted V-shape do not intersect with each other when load is high, and controls said pressure of the fuel such that it is lowered so that the two prongs of the spray in an inverted V-shape are caused to overlap in vicinity of the spark plug when load is low, and said air amount control unit controls said amount of the air such that it is increased when load is high, and controls said amount of the air such that it is decreased when load is low.