Control device for a filling-ratio adjusting pump
    1.
    发明授权
    Control device for a filling-ratio adjusting pump 失效
    填充比调节泵的控制装置

    公开(公告)号:US5701873A

    公开(公告)日:1997-12-30

    申请号:US464856

    申请日:1995-07-10

    摘要: A control device for a filling-ratio adjusting pump with at least one displacement space works on the suction-throttle principle with a positive variation in volume of the displacement space or displacement spaces and is intended inter alia particularly for common-rail diesel injection systems. It allows an exact, precise and highly dynamic control of the filling-ratio adjusting pump at low outlay, without the system being impaired by undesirable cavitation. Located on the suction side of the pump is at least one throttling 2/2-way valve (21, 21a, 21b; 134; 51, 52, 53, 54; 81; 103) actuated by pressure difference. Either such a 2/2-way valve can be used for a group of displacement spaces or for the entire pump or a respective valve of this type can be inserted in front of each individual displacement space. The pressure-difference control of the or each 2/2-way valve takes place via an adjusting device (27; 150) which is arranged on the inflow side of the 2/2-way valve and which is designed either as a throttling valve or as a flow-regulating valve.

    摘要翻译: PCT No.PCT / CH94 / 00215 Sec。 371日期:1995年7月10日 102(e)日期1995年7月10日PCT 1994年11月7日PCT PCT。 公开号WO95 / 13474 日期1995年5月18日用于具有至少一个位移空间的填充比调节泵的控制装置在吸气节流阀原理上起作用,其位移空间或位移空间的体积具有正的变化,特别是特别用于共轨 柴油喷射系统。 它允许在低成本下精确,精确和高度动态地控制填充比调节泵,而不会由于不希望的气蚀而损害系统。 位于泵的吸入侧的是由压差驱动的至少一个节流二通阀(21,21a,21b; 134; 51,52,53,54; 81; 103)。 这种2/2通阀可以用于一组移动空间或整个泵,或者这种类型的相应的阀可以插入每个单独的位移空间的前面。 每个2/2通阀的压力差控制通过调节装置(27; 150)进行,该调节装置设置在二通阀的流入侧,并被设计为节流阀 或作为流量调节阀。