Hybrid apparatus for controlling the rotation of a fan for cooling the cooling fluid of a vehicle

An apparatus for controlling the rotation about a longitudinal axis (X-X) of a fan (1) for cooling a cooling fluid contained in a radiator of a vehicle, comprising:

• a fixed support sleeve (3), internally hollow and extending parallel to the longitudinal axis (X-X) of rotation of the fan;
• a bell member (1a) for supporting the fan;
• an electromagnetic friction coupling (10), arranged between the bell member (1a) and movement receiving means (4) for connection to a driving shaft of the vehicle;
• an electric motor (20) for generating a rotational movement independent of the driving shaft of the vehicle, comprising a stator (21) and a rotor (22);
• a first rear flange (3a) integral with the sleeve (3) and designed to support an electromagnet (12) of the electromagnetic friction coupling;
• and
• a second flange (40), integral with the support sleeve (3) and designed to support the stator (21) of the electric motor (20) and to support a control unit (30;
• 130) for electronically controlling and driving the electric motor (20), arranged in a position radially on the inside of the bell member (1a) supporting the fan;
• wherein the bell member (1a) is mounted on an outer race (2a) of a bearing (2), an inner race (2b) of which is keyed onto the support sleeve (3);
• and
• wherein the movement receiving means are arranged in a position radially on the outside of the electromagnet friction coupling.