LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: lubricating system has oil tank 2, pumping out pump 3, delivery pump 4, and pump 5 for oil pumping. The system is provided with valve 6 mounted on crankcase 1. Case 13 of the valve is provided with space 14 wherein guide bushing 15 provided with spring-loaded ball 17, movable piston 18 having through axial opening and seat surface for ball 17, and rod stop 20 are received. Space 24 is coupled with drain passage 25. Drain valve 25 and inlet valve 29 are coupled with the space from the side of the ball. Diameters of piston and its axial openings are defined by relationships available in invention description. EFFECT: enhanced reliability. 2 cl, 2 dwg