INFINITELY ADJUSTABLE COOLANT PUMP

摘要

The invention relates to a coolant pump for a cooling circuit of an internal combustion engine, comprising a pump housing (1) in which a drivable shaft (2a) is mounted, at the one end of which drivable shaft impeller (4) is fastened. Said impeller (4) has vanes (6) protruding into a suction chamber (7) and is connected to a cover plate (9). By the rotation of the impeller (4) in conjunction with the cover plate (9), fluid can be drawn into the suction chamber (7) via an intake connection (10) of the pump housing (1) and can be conveyed into the pump housing (1) via the vanes (6). A guide plate (12), which can be moved axially by means of an actuator unit (3), is arranged between the impeller (4) and the cover plate (9) and has a contour corresponding to the impeller (4) and a projection (13) oriented in the direction of the impeller (4). The coolant pump is characterized in that the guide plate (12) has at least one opening (11) and the impeller (4) has a closure contour (5) that points in the direction of the guide plate (12), / wherein the closure contour (5) can be brought into engagement with one of the openings (11) of the guide plate (12) and closes said opening partially or completely.