Low force transmissibility mount

B - Operations – Transporting – 60 – K

Patent

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267/56, 248/7

B60K 5/00 (2006.01) B60K 5/12 (2006.01) F16F 7/108 (2006.01)

Patent

CA 1172275

C-3299 D-4,272 LOW FORCE TRANSMISSIBILITY MOUNT Abstract of the Disclosure A mount is disclosed mounting an internal combustion engine in a unitized vehicle body. The mount comprises an intermediate mass which is inde- pendent of the vehicle structure and the powertrain and is adapted to be frequency tuned. Separate elasto- meric bodies couple the intermediate mass to the vehicle structure and to the powertrain and the intermediate mass is predetermined in combination with the elasto- meric characteristics of the coupling bodies so as to resonate at a frequency within an uncoupled intermediate frequency range such that the transmissibility of the mount is attenuated substantially throughout a high frequency range to reduce vehicle structure noise caused by the engine's combustion process while satisfying other transmissibility criteria at the lower frequencies. In another embodiment, a portion of the intermediate mass is isolated and sprung from the remainder and the resonant intermediate mass frequencies are tuned to have substantially different peaks to further reduce the magnitude of the transmitted force at resonance while still attenuating the high frequency engine combustion caused vibrations.

387778

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