Section through a type PFR(roller tappet) single-cylinder injection pump 1, delivery valve holder; 2, delivery valve; 3, pump barrel; 4, pump plunger; 5, fuel control rod (rack); 6, rack control sleeve; 7, plunger control arm; 8, roller tapper.
Section through a type PFR(roller tappet) single-cylinder injection pump 1, delivery valve holder; 2, delivery valve; 3, pump barrel; 4, pump plunger; 5, fuel control rod (rack); 6, rack control sleeve; 7, plunger control arm; 8, roller tapper.