HIGH-PRESSURE FUEL PUMP SECTION Russian patent published in 2020 - IPC F02M59/46 F16K15/02 F04B53/10 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to high pressure fuel pumps. Section of high pressure fuel pump (HPFP) contains placed in housing 1 of the HPFP section housing 17 of the HPFP with its drive, installed in housing 17 of HPFP section and kinematically connected to it plunger pair and sets of inlet and outlet valves. Seat 8 of inlet valve 9 is flat, inlet valve 9 is made in form of flat washer with centering band 20, made in form of annular groove. Stop 11 of inlet valve 9 is made in the form of cylindrical barrel with bypass channel 27, on inner end surface of which cylindrical groove 21 is made, coaxial to outer 23 and internal 22 cylindrical surfaces of thrust 11. Spring 10 of inlet valve with interference is installed with its first end in cylindrical groove 21 of stop 11 of inlet valve 9, and with its second end is installed on annular groove of centering band 20 of inlet valve 9.

EFFECT: high-pressure fuel pump section design ensures reliable operation and manufacturability of HPFP section working parts manufacturing and repair.

1 cl, 3 dwg