| 摘要 |
PROBLEM TO BE SOLVED: To provide an intake port structure for an internal combustion engine capable of adjusting the flowing state of the air fed to a combustion chamber via plural intake ports into a predetermined flowing state. SOLUTION: In this intake port structure for an internal combustion, the single combustion chamber C1 communicates with the plural intake ports 9 and 10. In this case, the shape of an opening part 13 being the one-side intake port 9 and facing to the single combustion chamber C1 is different from that of an opening part 14 being the other-side intake port 10 and facing to the single combustion chamber C1.
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