| 摘要 |
PURPOSE:To provide a lower cover for the lower surface of an engine compartment, having high sound-absorption and no deterioration in corrosion-resistant and sound-absorption capabilities, by consituting the lower cover with a synthetic resin body formed therein with sound-absorbing chambers, and a sound- absorbing member comprising a water-proof film, for covering the sound-absorbing chambers. CONSTITUTION:A lower cover body 1 is formed with several sound-absorbing chambers 6 and is made of synthetic resin. A sound absorbing member 7 comprising a sound absorbing material 8 provided with a water-proof film 9 is attached to the upper surface of the lower cover body 1 so that the sound-abosrbing chambers 6 are covered. With this arrangement, sounds from an engine are damped by transmission and reflection as indicated by the arrows, thereby noises are reduced. |
