发明名称 Piston pump
摘要 A piston pump, in particular a radial piston pump which, as a secondary pump driven by the secondary side of a transmission, is to supply the transmission with oil if the primary pump driven by a motor fails, has a device for the purpose of lifting the delivery plunger (2) off its cam element (4) as a function of the presence of a control pressure generated by the primary pump. Said device consists in a piston chamber (14) being arranged on the side of the delivery plunger (2) opposite to the suction/discharge chamber (10), which piston chamber can be connected, via a non-return valve (16) which can be opened in the direction of the piston chamber (14), to a pressure connection (8) which can be connected both to the suction/discharge chamber (10) and to the oil circulation of the primary pump. <IMAGE>
申请公布号 DE3334697(A1) 申请公布日期 1984.04.26
申请号 DE19833334697 申请日期 1983.09.24
申请人 ZAHNRADFABRIK FRIEDRICHSHAFEN AG 发明人 BAEDER,ANTON
分类号 F04B1/04;F04B1/06;F04B49/02;F16N7/38;F16N29/00;(IPC1-7):F04B1/04 主分类号 F04B1/04
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