Damping force control system for shock absorber variable with fr

Details Damping force control system for shock absorber variable with fr Damping force control system for shock absorber variable with fr

1989-07-18

1991-01-15

Marmor, Charles A.

Land vehicles

Wheeled

Running gear

36442405, B60G 1708

Patent

active

049848208

ABSTRACT:
In a damping force control system for switching over a shock absorber in the suspension of a vehicle from a low damping force operation to a high damping force operation when a vehicle height difference exceeds a certain limit value, the frequency of the vehicle height difference exceeding the certain limit value is counted for each certain cycle period, and the shock absorber is controlled to provide the high damping force operation for a time duration in each cycle period, the ratio of the time duration to the cycle period being varied in accordance with the frequency so that the ratio is increased along with an increase of the frequency.

REFERENCES:
patent: 4600215 (1986-07-01), Kuroki et al.
patent: 4685689 (1987-08-01), Takizawa et al.
patent: 4714272 (1987-12-01), Buma et al.
patent: 4717173 (1988-01-01), Sugasawa et al.
patent: 4749210 (1988-06-01), Sugasawa et al.
patent: 4756549 (1988-07-01), Kurosawa et al.
patent: 4770438 (1988-09-01), Sugasawa et al.
patent: 4834419 (1989-05-01), Kozaki

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