| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal combustion engine intake device capable of further improving air intake efficiency to respective combustion chambers by dissolving non-isometric of the effective intake pipe length between variable intake device banks utilizing inertia supercharging effect. SOLUTION: An intake passage 26a is connected to a surge tank 25 chamber 29a in a curvature R12, and an intake passage 26b is connected to a surge tank 25 chamber 29b in a curvature R11. Here, the curvatures R11, R12 are R11>R12. It is then set so that, by the difference of curvatures R11 and R12, the length from the intake passage 26a, which is connected to the surge tank 25 in the angleθ, to the outlet of a surge tank upper intake pipe 25a and that from the intake passage 26b to the outlet of a surge tank lower intake pipe 25b may be the same.
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