Hydraulic pump e.g. water pump, mounting arrangement for internal combustion engine, has radial and axial holes rejoined for forming coolant circulation channel between housing of pump bodies and front of pump shaft

摘要

The arrangement has a hydraulic pump (10) with a back ring (45) integrated with a turbine (24) comprising a flange and a central reinforcement forming a projection towards the rear of the turbine. A pump shaft (40) has an axial hole (42) emerging out from a side of an axial front end of the shaft for axially pumping a coolant. A radial hole (44) emerges out between a ring (46) and the back ring (45) for radially receiving the coolant. The holes (42, 44) are rejoined for forming a coolant circulation channel between a housing (36) of pump bodies (26, 28, 34) and the shaft front. An independent claim is also included for a hydraulic pump comprising a pump shaft in a body.