| 摘要 |
<p>PURPOSE:To balance the amounts of fresh air in cylinders with each other and to improve an intake air inertia effect, by a method wherein combustion chambers are communicated with each other through a common suction port, and two port inlets are formed in said suction port so that suction systems are located approximately symmetrically about the cylinder positioned at the center of an engine. CONSTITUTION:In 3 combustion chambers 2a, 2b, and 2c of a cylinder head 1, suction valves 3a, 3b, and 3c are disposed on the left side, and exhaust valves 4a, 4b, and 4c on the right side. The valves are arranged so that the suction valves and the exhaust valves equalize in a distance therebetween. The suction valves are communicated with each other through a common suction port 6, two port inlets 5a and 5b are formed in the suction port 6, and suction systems are located approximately symmetrically about the cylinder at the center of the engine. Exhaust ports 7a, 7b, and 7c, which are situated independently from each other so that the influence of other cylinder is prevented from being exercised thereon, are communicated to their respective exhaust valves.</p> |
