Coolant pump of an internal combustion engine of commercial vehicle, has fluid coupling that is connected with shaft sections of split pump shaft, for varying driving speed of coolant pump by a variable filling fluid of clutch housing

摘要

The coolant pump (5) has a pump housing (8), in which a split pump shaft (10) with an associated impeller (17) is rotatably mounted. The impeller conveys coolant flow through a suction port into a spiral channel of the coolant pump. A fluid coupling (20) with a rotor (22) and a stator (24) is arranged between the impeller and a pulley (18). The fluid coupling is connected with shaft sections (14,14') of the split pump shaft. A driving speed of the coolant pump is varied by a variable filling fluid of a clutch housing (25) of fluid coupling.