Coolant pump for an internal combustion engine

A coolant pump for an internal combustion engine, the coolant pump comprising:

• a delivery duct;
• a drive shaft;
• a coolant pump impeller arranged on the drive shaft so as to rotate jointly therewith, the coolant pump impeller being configured to covey a coolant into the delivery duct which surrounds the coolant pump impeller;
• a control slide which is configured to be adjustable so as to control a throughflow cross-section of an annular gap arranged between an outlet of the coolant pump impeller and the delivery duct, the control slide comprising a first pressure chamber;
• a side channel pump comprising a side channel pump impeller arranged on the drive shaft so as to rotate jointly therewith, and a side channel which is configured so that a pressure can be generated by a rotation of the side channel pump impeller, the side channel comprising an outlet;
• a pressure duct comprising a throughflow cross-section, the pressure duct being configured to fluidically connect the outlet of the side channel to the first pressure chamber of the control slide;
• a valve configured to open and to close the throughflow cross-section of the pressure duct;
• and
• a first housing part configured to have the side channel be formed therein and to have the control slide be slidingly guided thereon,
• wherein,
• the coolant pump impeller is integrally formed with the side channel pump impeller.