Sealing for a regulable coolant pump

Abstract

A regulable coolant pump for a coolant circuit of an internal combustion engine, which has a pump housing and a hollow shaft that is placed in the housing and mounted on rolling bearings that connects a drive wheel to an impeller. As the impeller rotates, coolant is drawn in via an inlet chamber that is upstream from the cover disk and is delivered, via vanes of the impeller, into an annular channel of the pump housing. The volumetric delivery can be influenced through an axially displaceable baffle plate assigned to the impeller. The baffle plate is connected in a rotationally rigid manner to a push rod guided in the hollow shaft that acts together with an adjusting unit. A sealing element is provided to seal an annular gap that forms between the baffle plate and the cover disk.

Dependencies are inferred from the claim text.