Switchable mechanical automotive coolant pump

摘要

The invention refers to a switchable mechanical automotive coolant pump (10) comprising
a pump rotor (60) including a pump wheel (18) for pumping the coolant liquid,
a pulley wheel (40) arranged to be mechanically driven by an automotive engine, and
an electromagnetic friction clutch arrangement with a dry friction clutch (50) for connecting or disconnecting the pulley wheel (40) and the pump rotor (60), and
an electromagnet (30) switching the friction clutch (50) between an engaged and a disengaged state. The friction clutch (50) comprises a pulley-sided conical friction surface (52) and a corresponding rotor-sided conical friction surface (54). The conical design of the friction clutch 50 allows a compact coolant pump design.