Direct injection internal combustion engine

A direct injection internal combustion engine, comprising:

• a plurality of cylinder portions arranged in a cylinder arrangement direction, each of the cylinder portions including:
• a fuel injection valve including an injection nozzle formed with a nozzle hole facing toward a central part of a combustion chamber and arranged to inject fuel directly into the combustion chamber;
• a spark plug including an electrode facing toward the central part of the combustion chamber and arranged to spark-ignite the fuel injected from the fuel injection valve, the fuel injection valve and the spark plug being disposed at a first angle and a second angle, respectively, in directions perpendicular to the cylinder arrangement direction, the first angle being different from a third angle at which the spark plug of one of the adjacent cylinder portions is disposed, the second angle being different from a fourth angle at which the fuel injection valve of other one of the adjacent cylinder portions is disposed, and the fuel injection valve and the spark plug being disposed at a fifth angle and a sixth angle, respectively, in directions parallel to the cylinder arrangement direction, the fifth angle being different from the sixth angle;
• and
• a portion defining a cooling channel between the fuel injection valve and the spark plug.

A direct injection internal combustion engine, comprising:

• means for performing an injecting operation of injecting fuel from a first position directly into a combustion chamber;
• means for performing an igniting operation of spark-igniting the fuel from a second position, the fuel being injected by the injecting operation, the first position and the second position being inclined at different angles from each other in directions perpendicular to a cylinder arrangement direction in which cylinders are arranged, and the first position and the second position being inclined at different angles from each other in directions parallel to the cylinder arrangement direction;
• and
• means for performing a cooling operation of cooling at least the first position from a third position defined between the first position and the second position.