| 摘要 |
PROBLEM TO BE SOLVED: To provide an intake device which is good in its mountability and can reduce intake noises within a wide frequency range without enlarging its size. SOLUTION: A second inner pipe member 32 is formed so as to be a truncated cone shape pipe, and its diameter gradually increases from an air cleaner 12 side to a serge tank 14 side. As a result, the intake noise due to the air flowing in the intake passage 22 formed by the second inner pipe member 32 is reduced by the diffuser effect of the intake passage 22 formed by the second inner pipe member 32. A resonator 50 is formed between an inner pipe member 30 and an outer pipe member 40 by providing the outer pipe member 40 on the outer peripheral side of the inner pipe member 30. The projection of members toward the outer peripheral side of the inner pipe member 30 is reduced by making the maximum diameter of the inner pipe member 30 nearly equal to the maximum diameter of the outer pipe member 40 even when the resonator 50 has been formed on the outer peripheral side of the inner pipe member 30. COPYRIGHT: (C)2008,JPO&INPIT
|
