| 摘要 |
PROBLEM TO BE SOLVED: To restrain a confined sound produced in a compartment by restraining the resonance vibration of a sub frame or a vehicle body which is arranged with an engine mount. SOLUTION: An engine mount device 16 is arranged at a position that supports the sub frame 6 on a side member in the vehicle body and intersects with a main inertial axis 15 of a power unit 5 in a left hand frame member 9 of the sub frame 6. A fluid engine mount 17 and the engine mount 18 are arranged at positions that sandwiches the main inertial axis 15 in the other right hand frame member 10. The engine mounts 16, 18 is set so that the transmitted phase is a phase identical to the vibrational input from the power unit 5, regardless of the frequency; and the fluid engine mount 17 is so set that peak of phase characteristic is equal at balance resonance frequency fB of the sub frame 6 and is so set that the transmitted phase is of opposite phase with respect to the vibrational input from the power unit 5, within the region of the balanced resonance frequency. |
