HYDRAULIC PLUNGER Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: top part of guide bushing 5 is made up as hollow cylindrical cap which abuts upon the bottom of housing 3. The cap and bottom define ring space 6 whose volume exceeds the volume of high pressure chamber 16 and is connected with the high pressure chamber through ring space 19. In addition, radial passages 20 for supplying oil to the working high pressure chamber are made at the top part of piston 14 of the hydraulic compensators. The ratio of the inner diameter of the guide bushing cap to the outer diameter of the head of the hydraulic compensator is defined by the relationship presented in the invention description. EFFECT: enhanced reliability. 2 cl, 2 dwg