Patent ID: 6991078

Claim:
A hydrodynamic converter for a power train of a motor vehicle comprising one pump ( 2 ), one turbine ( 3 ) connected with a transmission input shaft ( 4 ) and one stator ( 5 ), and the pump ( 2 ) being detachably connectable, via a primary clutch (PK), with an output ( 6 ) from an engine: wherein said primary clutch (PK) is situated in a transmission (G); converter oil flows through said primary clutch (PK) and the primary clutch (PK) is actuatable by converter pressure; said primary clutch (PK) is engaged by spring ( 12 ), a piston ( 11 ) of said primary clutch (PK) is movable by the converter pressure, against a bias of the spring ( 12 ), so that said primary clutch (PK) disengages, and a gap between a pump hub ( 8 ) and a guide wheel shaft ( 9 ) is sealed so that the oil can be fed to an inner disc carrier of said primary clutch (PK), and said inner disc carrier has apertures ( 10 ) such that the oil arrives at discs by passing through said apertures ( 10 ), grooves are provided in a friction lining which outwardly convey the oil, and the oil flows axially to said converter ( 1 ) through a gap between the pump hub ( 8 ) and a converter shell ( 7 ) and via holes in the gap between the pump hub ( 8 ) and the guide wheel shaft ( 9 ).