Influence of Bionic Pit Structure on Friction and Sealing Performance of Reciprocating Plunger

Figure 4

Test bench: 1: drive motor; 2: pedestal base; 3: pull rod; 4: plunger; 5: high-speed camera; 6: cylinder liner; 7: sealed chamber; 8: pressure control device; 9: data acquisition control box; 10: pull pressure sensor; 11: locating pin; 12: adjustable stroke crank; 13: speed sensor.