Motor vehicles – Power – Having specific motor-to-body-frame relationship
Patent
1980-12-19
1983-03-22
Spar, Robert J.
Motor vehicles
Power
Having specific motor-to-body-frame relationship
180312, 248559, 248607, 248620, 267 30, 267136, B60K 500
Patent
active
043772188
ABSTRACT:
A buffer rod is interconnected between an engine and a chassis of a vehicle in addition to the main engine mounts. The rod has a resonance frequency slightly lower than the engine vibration frequency at which resonance in the vehicle cabin is apt to occur. Upon reaching the resonance frequency of the rod, the phase of vibration passing through the rod changes so that instead of increasing the spring modulus of the combination of engine mounts and buffer rod to damp vibrations which would otherwise shake the vehicle, the spring modulus thereof is reduced to a very low value due to the interference between the vibration passing through the mounts and the buffer rod. This sudden softening of the engine suspension as a whole, damps the engine vibrations which would otherwise induce resonance in the vehicle cabin.
REFERENCES:
patent: 1840080 (1932-01-01), Breer
patent: 3322379 (1967-05-01), Flannelly
patent: 3353771 (1967-11-01), Bow
patent: 3791676 (1974-02-01), Spratlen
patent: 4240517 (1980-12-01), Harlow, Jr. et al.
patent: 4274510 (1981-06-01), Mouille et al.
Nissan Motor Co,. Ltd.
Spar Robert J.
Underwood Donald W.
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