Pressure control system for suspension

Details Pressure control system for suspension Pressure control system for suspension

1989-12-27

1990-09-18

Rice, Kenneth R.

Land vehicles

Wheeled

Running gear

280DIG1, 36442405, B60G 1126

Patent

active

049573098

ABSTRACT:
A pressure control system for suspension delivers a pressure which is proportional to a current level chosen to energize a solenoid of a pressure control valve to a shock absorber of a suspension. A change in the pressure of a return path which supplies a low pressure to the pressure control valve causes the pressure which is applied to the suspension to change. In order to suppress such change, a junction of the pressure control valve with the return path has an orifice interposed therein or is connected to a low pressure accumulator. On the other hand, in the event a depression occurs in the output of the high pressure piping, a cut valve which functions to isolate the suspension from the pressure control valve may be temporarily cut off in response to a pressure fluctuation in the high pressure piping. In order to prevent this, an orifice is interposed between the high pressure piping and a pilot chamber of the cut valve.

REFERENCES:
patent: 4463969 (1984-08-01), Harrison
patent: 4546960 (1985-10-01), Abrams et al.
patent: 4702843 (1987-10-01), Oswald et al.
patent: 4831532 (1989-05-01), Kondo

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