Cylinder injection engine and method of combusting engine

A combustion method for a direct injection engine including a cylinder head having a conically-shaped face, an ignition plug arranged on the top of a combustion chamber, positioned at an apex point of the conically-shaped face, and installed at a substantial center of the cylinder head, a fuel injector located on a side of said i combustion chamber and installed in a vicinity of an intersection point between the cylinder head and a cylinder block, and an intake air control means installed on an intake manifold, the method comprising:

• generating a tumble air flow rising from the bottom of said fuel injector to said ignition plug in said combustion chamber with said intake air control means, and
• causing fuel spray injected from said fuel injector to rise from the bottom of said fuel injector along a wall surface on an intake air side in said combustion chamber and to be carried by said tumble air flow from said fuel injector to said ignition plug so that said fuel spray reaches said ignition plug by the time of ignition of said ignition plug,
• wherein, with respect to a line which passes through an injection point of the fuel injector and intersects at a substantially right angle with a center line of a cylinder, the fuel injector is installed so as to be inclined along a central axial line of the fuel injector toward the piston side, and
• wherein, when the fuel spray injected from the fuel injector is sectionally crossed with a plane which includes a spark point of the ignition plug and the injection point of the fuel injector, the ignition plug is positioned between the line which passes through the injection point and the face of the cylinder head.