Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1997-10-17
1999-11-09
Oberleitner, Robert J.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
1882661, 280 5515, 280 5519, 701 37, F16F 500
Patent
active
059798858
ABSTRACT:
A damping coefficient control apparatus for a damper device in a suspension mechanism disposed between a sprung mass and an unsprung mass of a wheeled vehicle, wherein an absolute vertical movement velocity of the sprung mass is detected in an absolute space to adjust a damping coefficient of the damper device to a predetermined small value when vertical vibration of the sprung mass tends to be increased and to increase the damping coefficient of the damper device more than the predetermined small value in accordance with an increase of the absolute vertical movement velocity when vertical vibration of the sprung mass tends to be dampened, and wherein the magnitude of vertical vibration of the sprung mass is further detected to adjust a lower limit value of the damping coefficient of the damper device to a larger value than the predetermined small value when the magnitude of vertical vibration of the sprung mass increases.
REFERENCES:
patent: 5521821 (1996-05-01), Shimizu et al.
patent: 5701245 (1997-12-01), Ogawa et al.
Oberleitner Robert J.
Sy Mariano
Toyota Jidosha & Kabushiki Kaisha
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