Turbo-charged heat engine arrangement for motor vehicle, has pressure balancing duct connecting chamber with oil circulating element to avoid closing of duct by plug and to balance pressure for avoiding overpressure of oil in bearing

摘要

The arrangement (10) has a turbo-charged heat engine (12) comprising a sump (14) filled with oil (16). An oil supply duct (34) connects an oil pump (36) with a central bearing of a turbo-charger (18), and an oil evacuation duct (42) connects the bearing with the sump. An additional pressure balancing duct (48) connects a chamber with an oil circulating element (50) e.g. blow-by duct, to avoid closing of the duct (48) by an oil plug and to balance pressure for avoiding overpressure of oil in the bearing. The element is arranged above a determined level (h) of the oil.