VENTILATION SYSTEM OF INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: ventilation system of crankcase has oil separator with inlet, outlet and gas discharge pipe lines 4, and separating chamber, crankcase gas suction pipe line, and valve of rarefication in crankcase provided with a space and driving aperture to which a locking member is secured. The rarefaction valve is arranged in the oil separator upstream of gas discharge branch pipe 4. The separating chamber coupled with the crankcase of the engine via outlet pipe line is made of spaces 5,6 each of which is provided with inclined surface 15. One of the spaces is coupled with the space of the rarefaction valve via a connecting opening. The connecting opening is oval and its convex part is arranged on inclined surface 15 of the oil separator space. The opening is closed by shield 16 which forms one of the spaces of the oil separator. EFFECT: enhanced efficiency. 2 cl, 4 dwg