DIESEL ENGINE FUEL SYSTEM Russian patent published in 1999 - IPC

FIELD: mechanical engineering; diesel engines; fuel devices. SUBSTANCE: system has fuel injection pump 1 with barrel 2 and plunger 3, delivery valve 4 in seat 5, cutoff and suction hole 6 in barrel 2 connected with feed channel 7 and, through union 8, with feed line 9. Union 10 of delivery valve 4 is coupled by means of adapter 11 with conical nipple 13 of high pressure pipe 14 by union nut 15 and retainers 16. Hole of nut 15 exceeds outer diameter of nipple 13 which, together with retainers 16, provides possibility of mounting of members without demounting of parts of main fuel feed system. High pressure pipe is coupled with feed line through holder 12. Holder 12 gets into port 17 of adapter 11 and has channel 18 opening in to space 19 under check valve 20. Check valve 20 is provided with relief belt with groove. Check valve 20 arranged in seat 21 is pressed by spacer 22 and union 23 to holder 12. Pipeline 24 with union 25 complete additional channel coupling main line 9 with high pressure pipe 14. EFFECT: enhanced efficiency of engine and fuel system devices by increasing initial pressure and decreasing undesirable increment in volume of delivery main line. 2 dwg