Patent ID: 7475675

Claim:
An in-cylinder direct injection engine comprising: a fuel rail; a fuel injection valve attached to the fuel rail so as to inject fuel with the injection valve being engaged with a fuel injection hole that is positioned in a central portion of a roof of a cylinder head so as to be located between openings of an intake air port and an exhaust air port with a center axis of the fuel injection valve being inclined with respect to a center axis extending through a cylinder; and an ignition plug engaged in an ignition hole that is positioned in the central portion of the roof between openings of the intake air port and the exhaust air port, the fuel injection hole and the ignition hole being generally aligned along an axis of a crankshaft, the fuel injection valve being attached to the fuel rail with the center axis of the fuel injection valve generally orthogonally intersecting an axis extending through the fuel rail, the ignition plug being inclined with respect to the fuel injection valve when viewed from a direction perpendicular to a rotational axis of the crankshaft and perpendicular to the center axis extending through the cylinder with a water pathway being formed in the cylinder head and with the water pathway being at least partially aligned between the ignition plug and the fuel injection valve.