公开(公告)号：US4245962A

公开(公告)日：1981-01-20

申请号：US52099

申请日：1979-06-26

申请人： Kazuo Uehara ,  Hideaki Toma ,  Yoshito Sato

发明人： Kazuo Uehara ,  Hideaki Toma ,  Yoshito Sato

IPC分类号： F16K11/07 ,  F04B49/00 ,  F04B49/08

CPC分类号： F04B49/002 ,  F04B49/08 ,  F04B2201/1204

摘要： A displacement control system for a variable displacement pump comprising a charge pump; a cut-off control valve connected to the charge pump, the cut-off control valve including a valve body having a first and a second pump ports and an outlet port formed therein, the first pump port being connected to the charge pump and the second pump port being connected to the variable displacement pump, a sleeve mounted within the valve body, a pin slidably mounted within the sleeve, a spool slidably mounted within the sleeve, a cylindrical cap member fixedly secured to the valve body defining a spring chamber therein, and a spring disposed within the spring chamber for urging the spool toward connecting the first pump port with the outlet port; and a servo booster connected to the outlet port for controlling the displacement of the variable displacement pump.

摘要翻译： 一种用于包括电荷泵的可变排量泵的排量控制系统; 连接到所述电荷泵的截止控制阀，所述截止控制阀包括具有形成在其中的第一和第二泵口和出口的阀体，所述第一泵口连接到所述电荷泵，所述第二泵口连接到所述电荷泵， 泵端口连接到可变排量泵，安装在阀体内的套筒，可滑动地安装在套筒内的销，可滑动地安装在套筒内的柱塞，固定地固定到阀体上的圆柱形盖件，在其中限定弹簧室， 以及弹簧，其设置在所述弹簧室内，用于推压所述线轴以将所述第一泵口与所述出口连接; 以及连接到出口的伺服增压器，用于控制可变排量泵的排量。

公开(公告)号：US4244678A

公开(公告)日：1981-01-13

申请号：US52098

申请日：1979-06-26

申请人： Kazuo Uehara ,  Hideaki Toma ,  Yoshito Sato

发明人： Kazuo Uehara ,  Hideaki Toma ,  Yoshito Sato

IPC分类号： F04B49/00

CPC分类号： F04B49/002

摘要： A displacement control system for a variable displacement pump comprising a charge pump; a first and a second actuators connected in parallel to the variable displacement pump; a cut-off control valve connected to the charge pump, the cut-off control valve including a valve body having a first and a second pump ports, a pressure port and an outlet port formed therein, the first pump port being connected to the charge pump, the second pump port being connected to the variable displacement pump and the pressure port being connected to the first actuator, a sleeve mounted within the valve body, a first and a second pins slidably mounted within the sleeve, a spool slidably mounted within the sleeve, a cylindrical cap member fixedly secured to the valve body defining a spring chamber therein, and a spring disposed within the spring chamber for urging the spool toward connecting the first pump port with the outlet port; and a servo booster connected to the outlet port for controlling the displacement of the variable displacement pump.

摘要翻译： 一种用于包括电荷泵的可变排量泵的排量控制系统; 与可变排量泵并联连接的第一和第二致动器; 连接到所述电荷泵的截止控制阀，所述截止控制阀包括具有第一和第二泵口的阀体，形成在其中的压力端口和出口端口，所述第一泵口连接到所述电荷 泵，第二泵口连接到可变排量泵，压力端口连接到第一致动器，安装在阀体内的套筒，可滑动地安装在套筒内的第一和第二销，可滑动地安装在阀体内的阀芯 套筒，固定地固定到阀体上的圆筒形盖构件，其中限定弹簧室;以及弹簧，其设置在弹簧室内，用于推动阀芯以将第一泵口与出口连接; 以及连接到出口的伺服增压器，用于控制可变排量泵的排量。