Damping force control type hydraulic shock absorber

The flow of a hydraulic fluid caused by sliding movement of a piston in a cylinder is controlled by a disk valve and extension- and contraction-side main valves, thereby generating damping force. By controlling the valve opening pressures of the disk valve as a pressure control valve with respect to...

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Bibliographic Details
Main Authors KURUSU AKINORI, NEZU TAKASHI
Format Patent
LanguageEnglish
Published 07.08.2001
Edition7
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
SHOCK-ABSORBERS
SPRINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:The flow of a hydraulic fluid caused by sliding movement of a piston in a cylinder is controlled by a disk valve and extension- and contraction-side main valves, thereby generating damping force. By controlling the valve opening pressures of the disk valve as a pressure control valve with respect to extension- and compression-side valve seats with a proportional solenoid actuator, damping force can be directly controlled independently of the piston speed. Moreover, the pressures in pilot chambers are changed to control the valve opening pressures of the extension- and compression-side main valves. Because the disk valve is placed between the extension- and compression-side valve seats, it is possible to simultaneously select different damping force characteristics for the extension and compression sides.
Bibliography:Application Number: US19990473019