INTERNAL COMBUSTION ENGINE LUBRICATION SYSTEM Russian patent published in 2001 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: lubrication system has oil tank 1, pump 2 driven by engine shaft, delivery oil line 3, return oil line 4, main oil line 5, full-flow oil filter 6 installed on engine crankcase 7 and butt-joined along plane A, and pressure regulator 8. Pressure regulator installed in housing of filter 6 has housing 9 accommodating stepped plunger 10 spring-loaded from of larger diameter D. Adjusting screw 12 thrusting against end of spring 11 is installed in housing 9 of pressure regulator 8. Space 13 between smaller diameter d and larger diameter D of plunger 10 communicates with main oil line 5. Cylindrical part of smaller diameter d of plunger 10 overlaps channel 4 along which oil from delivery oil line 3 returns into engine crankcase 7. Space 19 communicates with return oil line 4 through axial hole 20 made in plunger 10. Space 13 between smaller diameter d and larger diameter D of plunger 10 communicates with cleaned oil space 14 of filter 6. Cylindrical part of smaller diameter d of plunger 10 controls oil delivery into main oil line 5 by opening oil channel connecting contaminated oil space 16 of filter 6 with return oil line 4 made in form of through hole in wall of crankcase 7 and butt-joined with end face of pressure regulator 8. EFFECT: simplified design, enhanced reliability of engine lubrication system owing to reduced branching and length of oil system lines, possibility of pressure control in main oil line with engine operating. 2 cl, 1 dwg