威格士柱塞泵柱塞往复运动总行程L是不变的，由凸轮的升程决定。柱塞每循环的供油量大小取决于供油行程,供油行程不受凸轮轴控制是可变的。VICKERS威格士PVH柱塞泵 VICKERS威格士PVH柱塞泵

 :陈


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供油开始时刻不随供油行程的变化而变化。转动柱塞可改变供油终了时刻，从而改变供油量。柱塞泵工作时，在喷油泵凸轮轴上的凸轮与柱塞弹簧的作用下，迫使柱塞作上、下往复运动，从而完成泵油任务，泵油过程可分为以下三个阶段。

1、进油过程

当凸轮的凸起部分转过去后，在弹簧力的作用下，柱塞向下运动，柱塞上部空间（称为泵油室）产生真空度，当柱塞上端面把柱塞套上的进油孔打开后，充满在油泵上体油道内的柴油经油孔进入泵油室，柱塞运动到下止点，进油结束。

2、供油过程

当凸轮轴转到凸轮的凸起部分顶起滚轮体时，柱塞弹簧被压缩，柱塞向上运动，燃油受压，一部分燃油经油孔流回喷油泵上体油腔。当柱塞顶面遮住套筒上进油孔的上缘时，由于柱塞和套筒的配合间隙很小（0.0015-0.0025mm）使柱塞顶部的泵油室成为一个密封油腔，柱塞继续上升，泵油室内的油压迅速升高，泵油压力>出油阀弹簧力+高压油管剩余压力时，推开出油阀，高压柴油经出油阀进入高压油管，通过喷油器喷入燃烧室。

3、回油过程

威格士柱塞向上供油，当上行到柱塞上的斜槽（停供边）与套筒上的回油孔相通时，泵油室低压油路便与柱塞头部的中孔和径向孔及斜槽沟通，油压骤然下降，出油阀在弹簧力的作用下迅速关闭，停止供油。此后柱塞还要上行，当凸轮的凸起部分转过去后，在弹簧的作用下，柱塞又下行。此时便开始了下一个循环。

威格士柱塞泵是往复泵的一种，属于体积泵，其柱塞靠泵轴的偏心转动驱动，往复运动，其吸入和排出阀都是单向阀。当柱塞外拉时，工作室内压力降低，出口阀关闭，低于进口压力时，进口阀打开，液体进入；柱塞内推时，工作室压力升高，进口阀关闭，高于出口压力时，出口阀打开，液体排出。带滑靴结构的轴向柱塞泵是目前使用zui广泛的轴向柱塞泵，安放在缸体中的柱塞通过滑靴与斜盘相接触，当传动轴带动缸体旋转时，斜盘将柱塞从缸体中拉出或推回，完成吸排油过程。柱塞与缸孔组成的工作容腔中的油液通过配油盘分别与泵的吸、排油腔相通。变量机构用来改变斜盘的倾角，通过调节斜盘的倾角可改变泵的排量。

/东莞威格士

威格士柱塞泵系列：

   PVQ系列：PVQ5、PVQ10、PVQ15、PVQ20、PVQ25、PVQ29、PVQ45

   PVB系列：PVB5、PVB10、PVB15、PVB20、PVB25、PVB29、PVB45

   PVH系列：PVH57、PVH74、PVH98、PVH131、PVH141

   PVM系列：PVM018/020、PVM040/050、PVM057/063、PVM074/081、PVM098/106、PVM131/141

   PVXS（PF）系列：PVXS066、PVXS090、PVXS130、PVXS180、PVXS250等。

威格士PVH柱塞泵：VICKERS PISTON PUMP：

PVH074R01AA10A25000000100100010A   PVH74C-RF-1S-10-C25-31       VICKERS PISTON PUMP

PVH074R01AA10B25200000100100010A   PVH74C-RF-1S-10-C25V-31      VICKERS PISTON PUMP

PVH074R01AA10A250000001001AA010A   PVH74C-RF-1S-11-C25-31       VICKERS PISTON PUMP

PVH074R01AA10B252000001001AA010A   PVH74C-RF-1S-11-C25V-31      VICKERS PISTON PUMP

PVH074R02AA10A25000000100100010A   PVH74C-RF-2S-10-C25-31       VICKERS PISTON PUMP

PVH074R02AA10B25200000100100010A   PVH74C-RF-2S-10-C25V-31      VICKERS PISTON PUMP

PVH074R02AA10B252000001001AA010A   PVH74C-RF-2S-11-C25V-31      VICKERS PISTON PUMP

PVH074R01AA10A25000000200100010A   PVH74C-RSF-1S-10-C25-31      VICKERS PISTON PUMP

PVH074R01AA10B25200000200100010A   PVH74C-RSF-1S-10-C25V-31     VICKERS PISTON PUMP

PVH074R01AA10A250000002001AA010A   PVH74C-RSF-1S-11-C25-31      VICKERS PISTON PUMP

PVH074R02AA10A25000000200100010A   PVH74C-RSF-2S-10-C25-31      VICKERS PISTON PUMP

PVH074R02AA10B25200000200100010A   PVH74C-RSF-2S-10-C25V-31     VICKERS PISTON PUMP

PVH074R01AA10A250000001001AB010A   PVH74QIC-RF-1S-10-C25-31     VICKERS PISTON PUMP

PVH074R01AA10B252000001001AB010A   PVH74QIC-RF-1S-10-C25V-31    VICKERS PISTON PUMP

PVH074R01AA10A250000001001AE010A   PVH74QIC-RF-1S-11-C25-31     VICKERS PISTON PUMP

PVH074R01AA10B252000001001AE010A   PVH74QIC-RF-1S-11-C25V-31    VICKERS PISTON PUMP

PVH074R02AA10A250000001001AB010A   PVH74QIC-RF-2S-10-C25-31     VICKERS PISTON PUMP

PVH074R02AA10B252000001001AB010A   PVH74QIC-RF-2S-10-C25V-31    VICKERS PISTON PUMP

PVH074R02AA10A250000001001AE010A   PVH74QIC-RF-2S-11-C25-31     VICKERS PISTON PUMP

PVH074R02AA10B252000001001AE010A   PVH74QIC-RF-2S-11-C25V-31    VICKERS PISTON PUMP

PVH074R01AB10A250000001001AB010A   PVH74QIC-RM-1S-10-C25-31     VICKERS PISTON PUMP

PVH074R02AB10A250000001001AE010A   PVH74QIC-RM-2S-11-C25-31     VICKERS PISTON PUMP

PVH074R01AA10A250000002001AB010A   PVH74QIC-RSF-1S-10-C25-31    VICKERS PISTON PUMP

PVH074R01AA10B252000002001AB010A   PVH74QIC-RSF-1S-10-C25V-31   VICKERS PISTON PUMP

/东莞威格士

PVH074R01AA10A250000002001AE010A   PVH74QIC-RSF-1S-11-C25-31    VICKERS PISTON PUMP

PVH074R02AA10A250000002001AB010A   PVH74QIC-RSF-2S-10-C25-31    VICKERS PISTON PUMP

PVH074R02AA10A250000002001AE010A   PVH74QIC-RSF-2S-11-C25-31    VICKERS PISTON PUMP

PVH074R01AB10A250000002001AE010A   PVH74QIC-RSM-1S-11-C25-31    VICKERS PISTON PUMP

VICKERS威格士PVH098型号.

PVH098R01AJ30A25000000100100010A   PVH98C-RF-1S-10-C25-31       VICKERS PISTON PUMP

PVH098R01AJ30B25200000100100010A   PVH98C-RF-1S-10-C25V-31      VICKERS PISTON PUMP

PVH098R01AJ30B252000001001AA010A   PVH98C-RF-1S-11-C25V-31      VICKERS PISTON PUMP

PVH098R02AJ30A25000000100100010A   PVH98C-RF-2S-10-C25-31       VICKERS PISTON PUMP

PVH098R02AJ30B25200000100100010A   PVH98C-RF-2S-10-C25V-31      VICKERS PISTON PUMP

PVH098R02AJ30B252000001001AA010A   PVH98C-RF-2S-11-C25V-31      VICKERS PISTON PUMP

PVH098R01AJ30A25000000200100010A   PVH98C-RSF-1S-10-C25-31      VICKERS PISTON PUMP

PVH098R01AJ30B25200000200100010A   PVH98C-RSF-1S-10-C25V-31     VICKERS PISTON PUMP

PVH098R02AJ30A25000000200100010A   PVH98C-RSF-2S-10-C25-31      VICKERS PISTON PUMP

PVH098R02AJ30B25200000200100010A   PVH98C-RSF-2S-10-C25V-31     VICKERS PISTON PUMP

PVH098R01AJ30A250000001001AB010A   PVH98QIC-RF-1S-10-C25-31     VICKERS PISTON PUMP

PVH098R01AJ30B252000001001AB010A   PVH98QIC-RF-1S-10-C25V-31    VICKERS PISTON PUMP

PVH098R01AJ30A250000001001AE010A   PVH98QIC-RF-1S-11-C25-31     VICKERS PISTON PUMP

PVH098R02AJ30B252000001001AB010A   PVH98QIC-RF-2S-10-C25V-31    VICKERS PISTON PUMP

PVH098R02AJ30A250000001001AE010A   PVH98QIC-RF-2S-11-C25-31     VICKERS PISTON PUMP

PVH098R01AD30A250000001001AB010A   PVH98QIC-RM-1S-10-C25-31     VICKERS PISTON PUMP

PVH098R01AD30A250000001001AE010A   PVH98QIC-RM-1S-11-C25-31     VICKERS PISTON PUMP

PVH098R01AJ30A250000002001AB010A   PVH98QIC-RSF-1S-10-C25-31    VICKERS PISTON PUMP

PVH098R01AJ30B252000002001AB010A   PVH98QIC-RSF-1S-10-C25V-31   VICKERS PISTON PUMP

PVH098R01AJ30A250000002001AE010A   PVH98QIC-RSF-1S-11-C25-31    VICKERS PISTON PUMP

PVH098R02AJ30A250000002001AB010A   PVH98QIC-RSF-2S-10-C25-31    VICKERS PISTON PUMP

PVH098R02AJ30A250000002001AE010A   PVH98QIC-RSF-2S-11-C25-31    VICKERS PISTON PUMP

PVH098R01AD30A250000002001AB010A   PVH98QIC-RSM-1S-10-C25-31    VICKERS PISTON PUMP

PVH098R01AD30A250000002001AE010A   PVH98QIC-RSM-1S-11-C25-31    VICKERS PISTON PUMP

PVH098R01AD30B252000002001AE010A   PVH98QIC-RSM-1S-11-C25V-31   VICKERS PISTON PUMP