HYBRID ELECTROMECHANICAL COOLANT PUMP WITH BASE FLOW AND PEAK FLOW

摘要

The invention relates to a coolant pump having an impeller which is arranged on a pump impeller shaft and having a drive device for the impeller, which drive device has a mechanical drive and an electric-motor drive. The impeller shaft is divided into a driving section and a driven section, and an openable and closable clutch is arranged between the driving section and the driven section.

主权项

1. A coolant pump for rotating an impeller shaft comprising:
a housing member having a first end and a second end; an impeller shaft member positioned in said housing member; an impeller member positioned externally to said first end of said housing member and connected to one end of the impeller shaft member and rotatable therewith; a pair of first bearing members positioned in said housing member and positioned on said impeller shaft to allow rotation of said impeller shaft in relation to said housing member; a pulley member positioned adjacent said second end of said housing member; a second bearing member positioned in said housing member to allow rotation of said pulley member relative to said housing member; a mechanical drive body member positioned in said housing member and having a first end and a second end, said first end being fixedly attached to said pulley member; wherein said mechanical drive body member is rotatable with said pulley member; an electric motor having a rotor member and a stator member, said electronic member positioned in said housing member; said rotor member being fixedly connected to said impeller shaft member and rotatable therewith; and an electromechanical clutch mechanism positioned in said housing between said second end of said mechanical drive body member and said electronic motor; wherein activation of said electromechanical clutch mechanism prevents said mechanical drive body member from rotating said impeller shaft member; and wherein deactivation of said electromechanical clutch mechanism couples said mechanical drive body member to said impeller shaft member, thereby rotating said impeller shaft member at the rotation speed of said pulley member.