Patent ID: 8209980

Claim:
A cylinder head of an internal-combustion engine comprising: a plurality of combustion chambers; a plurality of intake paths communicating with each of the combustion chambers through intake ports, respectively; an exhaust path having one ends communicating with each of the combustion chambers through exhaust ports, respectively, and an assembling section at which the other ends are assembled; a supercharger connected to the assembling section of the exhaust path; an exhaust purification catalyst connected to the assembling section of the exhaust path; a bypass path communicating from the exhaust path to the exhaust purification catalyst by bypassing the supercharger, and a control valve capable of opening and closing the bypass path, wherein a part of the bypass path is provided in the cylinder head of the internal-combustion engine, wherein a bypass hole having one end communicating with the assembling section of the exhaust path and the other end opening on a side surface of the cylinder head is formed as the bypass path, wherein the other end of the bypass hole is formed so as to open on a side portion on which the assembling section of the exhaust path opens, and wherein the control valve is composed of a valve body capable of opening and closing the other end of the bypass hole, an actuator, and a link connecting the actuator and the valve body, as a unit, and the control valve unit is provided on the side surface of the cylinder head.