Patent ID: 9709000
Date: 2017-07-18
CPC Classifications: F01L,F02F

Claim:
1. A cylinder head of an engine, the engine comprising: a combustion chamber disposed in the cylinder head; first and second intake ports communicating with the combustion chamber; first and second intake valves configured to open and close intake openings of the first and second intake ports; first and second swing arms rotatably supported by first and second lash adjustors and configured to drive the first and second intake valves, respectively; and first and second fuel injection valves attached to the cylinder head and configured to inject fuel into the first and second intake ports, respectively, wherein the cylinder head comprises: a first cylindrical part into which the first lash adjustor is inserted: a second cylindrical part into which the second lash adjustor is inserted; a third cylindrical part into which the first fuel injection valve is inserted; and a fourth cylindrical part into which the second fuel injection valve is inserted, wherein an inner side surface of a sidewall of the cylinder head, which is extended upward from the first and second intake ports, is connected to a part of an outer periphery of the first cylindrical part for the first lash adjustor and a part of an outer periphery of the second cylindrical part for the second lash adjustor such that the inner side surface of the sidewall of the cylinder head is connected to serve as the parts of the outer peripheries of the first and second cylindrical parts for the first and second lash adjustors, wherein a part of the third cylindrical part for the first fuel injection valve is formed to serve as a bottom part of the first cylindrical part for the first lash adjustor and a part of the fourth cylindrical part for the second fuel injection valve is formed to serve as a bottom part of the second cylindrical part for the second lash adjustor, wherein the third cylindrical part for the first fuel injection valve and the first cylindrical part for the first lash adjustor overlap at least partially with each other and the fourth cylindrical part for the second fuel injection valve and the second cylindrical part for the second lash adjustor overlap at least partially with each other, when seen in a direction coaxial to a central axis of a cylinder of the cylinder head, wherein the third cylindrical part for the first fuel injection valve and the fourth cylindrical part for the second fuel injection valve are arranged side by side and are connected directly to each other, wherein a distance between an axial center of the third cylindrical part and an axial center of the fourth cylindrical part is shorter than a distance between an axial center of the first cylindrical part and an axial center of the second cylindrical part, and wherein in a cross section obtained by cutting the cylinder head in a plane along lower ends of the first cylindrical part and the second cylindrical part, each of the first to fourth cylindrical parts is formed into a partial circle shape, wherein the partial circles located at the lower ends of the first cylindrical part and the second cylindrical part can be connected to the partial circles located at the the upper portions of the third cylindrical part and the fourth cylindrical part.