PUMP FOR RECIRCULATING A COOLING LIQUID FOR COMBUSTION ENGINES WITH HYBRID CONTROL SYSTEM COMPRISING ELECTROMAGNETIC FRICTION COUPLING AND ELECTRIC MOTOR WHICH ARE AXIALLY OFFSET

摘要

Pump for recirculating a cooling liquid of a vehicle, comprising: a pump body (11) and an impeller (1) mounted on a driven shaft (2), coaxial with each other a first device (100) for transmitting to the driven shaft (2) the movement generated by the shaft of the combustion engine of the vehicle and comprising movement receiving means suitable for connection (103) with said shaft of the combustion engine; —a friction coupling (120) of the electromagnetic type, connected to said movement receiving means (121); —a second device (200) for generating a movement for the driven shaft (2) independently of the first movement transmission device (100) and comprising an electric motor (250) with stator (251) and rotor (253); —connection means (3,4,4a) rotationally integral with the driven shaft (2); wherein—the rotor (253) of the electric motor (250) is rotationally integral with the means for connection to the driven shaft (2); —the electromagnetic friction coupling (120) is arranged so as to connect/disconnect the first device (10) for transmission of the movement to the means (3,4,4a) for connection to the driven shaft; and—said electric motor (250) is arranged in a position axially on the outside of the electromagnetic friction coupling (120) and on the opposite side to the latter with respect to the impeller (1).