| 摘要 |
PROBLEM TO BE SOLVED: To inform a user of clogging of an air cleaner element by a simple structure. SOLUTION: This device includes an intake system sucking outside air to an engine via an air cleaner. The air cleaner 60 includes a box shape air cleaner case 70, the air cleaner element 63 dividing an inside of the air cleaner case into a clean side 61 and a dirty side 62, an outlet passage 60o discharging air to the engine from the clean side 61, and an inlet passage 60i sucking outside air to the dirty side 62. The device includes a sound generating member 80 allowing air flow when negative pressure in the clean side 61 becomes prescribed value or higher and generating sound by the air. A passage making outside air flow to the clean side via the sound generating member is connected to the sound generating member 80, and a second cleaner element 65 is disposed in the passage. COPYRIGHT: (C)2010,JPO&INPIT |
