| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a multi-cylinder engine facilitating forming an intake port by simplifying a shape of it, increasing output performance by avoiding interference of intake air, and simultaneously improving maintenance property of an ignition plug. <P>SOLUTION: Upstream ends of two adjoining intake ports 23i are opened on an intake manifold joining surface 30 of a cylinder head 4 and the intake ports 23i are arranged to get mutually close toward an upstream end. The exhaust ports 23e on both sides of the intake ports 23i are opened on an exhaust pipe joining surface 32 of the cylinder head 4 forming an angle with the intake manifold joining surface 30. An intake manifold 36 communicating with the two intake ports 23i and extending in a manner of crossing an outside of one exhaust port 23e and one side of one ignition plug 27 is joined on the intake manifold joining surface 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
