| 摘要 |
PROBLEM TO BE SOLVED: To ensure a large noise reducing effect with a space saving structure by arranging a plurality of resonators for eliminating engine intake noise on an intake pipe of an engine, and integratedly constituting a plurality of resonators, in an engine work machine wherein an engine and a work machine are stored in a package. SOLUTION: A resonator 8 for reducing engine intake noise generated when air is sucked from an intake pipe 7 is arranged in the intake pipe 7 of an engine. In this case, the resonator 8 is integratedly constituted with a plurality of resonators 21, 22. Each of resonators 21, 22 is composed of each of resonance pipes 21b, 22b extending from the intake pipe 1 and resonance chambers 21a, 22a formed on each tip end part, each of resonance chambers 21a, 22a is formed in an integral box type, and a resonance chamber part 8a of the resonator 8 is formed. Since an intake noise level can be reduced in a plurality of frequency zones by each of resonance chambers 21a, 22a, it is possible to sharply reduce intake noise of the engine.
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