| 摘要 |
PROBLEM TO BE SOLVED: To reduce vibration and noise from auxiliary machines such as a solenoid valve. SOLUTION: In this engine intake passage structure, an intake duct 19 for introducing intake air to an engine is formed of rubber, and the auxiliary machine 21 is supported by the rubber duct. By support to the rubber intake duct, vibration during operation of the auxiliary machine can be sufficiently damped by the whole duct. The intake duct itself is made of rubber, therefore, there are very few fear of resonance of the duct causing vibration of the valve. Thereby, noise emitted from the auxiliary machine and its periphery can be effectively reduced. Also, the rubber intake duct suppresses transmission of engine vibration to the auxiliary machine. Therefore, an influence of engine vibration on the auxiliary machine can be reduced, so that limitation of the supporting position and direction of the auxiliary machine on the intake duct can be reduced, and wiring to the auxiliary machine and piping can be facilitated. COPYRIGHT: (C)2004,JPO&NCIPI
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