| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an engine attaining always high volumetric efficiency with not only a specific rotational frequency band but also a wide-range engine rotational frequency, and capable of improving engine output.SOLUTION: An engine includes: a first connection pipe 12 and a second connection pipe 13 that are respectively connected to a suction passage 25 and whose lengths are different; a resonance container 21 that communicates with the suction passage 25 by the first connection pipe 12 and the second connection pipe 13; and a first valve 14 and a second valve 15 that are respectively disposed to the first connection pipe 12 and the second connection pipe 13. Consequently, the engine attains always high volumetric efficiency even when an engine rotational frequency changes, and can improve engine output.</p> |
