AIR-SUCTION-NOISE REDUCTION DEVICE AND WORKING MACHINE WITH THE SAME
摘要
<p>An engine cover (17) has a cover body (19) and an engine hood (20) installed over an opening in the upper face of the cover body (19). Reinforcement plates (24) are fixed to the inner surface of the engine hood (20). First to fourth reinforcement plates (24a-24d) of the reinforcement plates (24) partition the space inside an engine section (14). Inside the engine section (14) are formed an expansion chamber (26) communicating with an air suction path (23) that runs to an engine and resonance chambers (27, 28) communicating with the expansion chamber (26) via ports (29).</p>
