ABSTRACT

TABLE 1 Vane pump dimensions and specifications

I v 2. 2 6 5 mm Rro 3 4. 0 mm b v 2 8. 3 mm Rei 3 7. 55 mm Lv 1 1. 9 4 mm z 11

Variable Displacement Vane Pump Figure 1 shows a schematic diagram of

Eddy Current Displacement Sensor Figure 2 shows the calibration curve

Capacitive Displacement Sensor The capacitive meter measures micron

order movements of the vane tip. A copper electrode is inserted into a hole on the vane tip, and a shield wire at the bottom of the vane extends out the end of the rotor shaft through the balancing chamber. Since the micro-displacements between the vane tip and the cam ring's inner surface are converted into resultant voltage Ec changes, the important vane-contact condition can be evaluated.