Patent ID: 6928978

Claim:
An engine, comprising: a cylinder block having a cylinder; a cylinder head attached to the cylinder block, wherein the cylinder head has an inner wall that closes an opening of the cylinder; at least one intake valve provided in the cylinder head; at least one exhaust valve provided in the cylinder head; and an injector provided in the cylinder head, wherein the injector injects fuel into the cylinder, wherein the inner wall of the cylinder head has at least two valve openings, an injection port, and a notch, wherein each valve opening corresponds to one of the intake and exhaust valves, and is opened and closed by the corresponding valve, wherein fuel injected by the injector passes through the injection port, wherein the notch is formed in a part of the inner wall that defines the injection port, and wherein the notch prevents fuel injected by the injector from interfering with the cylinder head, wherein, when the inner wall is viewed along an axis of the cylinder, a line that passes through a center of the injection port and a center of one of the valve openings that is adjacent to the injection port, or the center of an adjacent valve opening, is defined as a first line, and a line that is perpendicular to the first line and passes the center of the injection port is defined as a second line, and wherein, when the inner wall is divided into sections by the second line, the notch is located in the section in which the adjacent valve opening exists, and the notch is displaced from the first line, wherein the injection port is located in a part of the inner wall that is close to the periphery of the cylinder, and wherein the notch has a nearest portion, which is nearest to the adjacent valve opening, and the nearest portion is displaced from the first line.