| 摘要 |
PROBLEM TO BE SOLVED: To suppress increase of intake resistance when two intake flows (inflow) flowing into a combustion chamber through two opening parts in an intake port are respectively deflected to a peripheral edge part side of the combustion chamber. SOLUTION: An intake port 3 is provided with two control recesses 10a, 10b spaced from each other in an arranging direction of two opening parts 5a, 5b. Main flows of an intake flow are deflected toward the control recesses 10a, 10b so that two intake flows (inflow) flowing into a combustion chamber 4 through two opening parts 5a, 5b can be respectively deflected to an peripheral edge part side of the combustion chamber 4. On the other hand, the intake port 3 is not required to be bent immediately before the combustion chamber 4 and to narrow a cross section thereof, so that the increase of intake resistance can be suppressed. COPYRIGHT: (C)2011,JPO&INPIT
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