| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent enlargement of an air intake duct and to improve air intake efficiency. Ž<P>SOLUTION: This invention relates to the air intake duct 17 (17A, 17B) leading air to a throttle device 18 connected to an engine 11. The air intake duct is provided with main walls 33, 55 forming main passages 40, 60, and auxiliary walls 34, 56 provided at outsides of the main walls 33, 55 and forming the auxiliary passages 41, 61. Heights of the auxiliary walls 34, 56 are lower than heights of the main walls 33, 55. The auxiliary passages 41, 61 are divided by inner wall surfaces of the auxiliary walls 34, 56 and outer wall surfaces of the main walls 33, 55, and are arranged at one side in a direction roughly perpendicular to a passage axis L of the main passages 40, 60. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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