PUMP GROUP, WITH ELECTRIC DRIVE AND MECHANICAL DRIVE, COMPRISING A SUPPORTED IMPELLER

摘要

A pump group (1) for a cooling circuit of an engine of a vehicle, comprising an impeller (2), rotatable around an axis (X-X). The impeller (2) comprises a paddle portion (21) and a support portion (22) having a support surface (220). The pump group (1) further comprises a mechanical drive (3) and an electric drive (5) respectively operatively connected to the impeller (2) by a first one-way coupling (61) and a second one-way coupling (62). The pump group (1) comprises a support and centering bearing (20) operatively connected to the support surface (220) suitable to support and keep the impeller (2) centred on the axis (X-X).