| 摘要 |
The control device for hydraulic systems has a three-way flow control valve (17) which directs a first flow of pressure medium to an accummulator (90) until the latter has been sufficiently charged, and directs a second flow of pressure medium to a second hydraulic circuit. To control the flow of pressure medium to the accummulator, a pilot control valve (63), which acts on a plunger (73) subjected to the pressure in the accummulator. Provided in the spool (18) of the flow control valve is a throttle valve (34) which, in conjunction with the pilot control valve (63) and the control plunger (73), ensures accurate switching of the flow control valve (17). <IMAGE>
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