Abstract: The electric motor (1) comprises: —a shaft (2) mounted so as to be able to rotate about an axis (X); —a rotor (10) and a stator (20) received in a housing (30). The shaft (2) is engaged in an aperture in the front wall (32) and an aperture in the rear wall (33) of the housing (30), with a front bearing (37) and a rear bearing (38) being interposed respectively. It comprises an inner channel (4) for a cooling fluid circulation and at least one hole (5) in communication with the inner channel and leading into a front inner space (35) or rear inner space (36) of the housing (30). A deflector (40) that is fixed in relation to the shaft comprises a deflecting wall (41) that diverts the flow of cooling fluid entering the inner space from the hole towards the corresponding bearing.

Abstract: A rotor including a shaft mounted around an axis of rotation; a laminated core mounted coaxially on the shaft, the laminated core extending between a front side face and a rear side face. It includes first internal cavities, a plurality of permanent magnets housed inside the first internal cavities, a front flange in the form of discs and arranged on either side of the laminated core. The shaft is provided with an internal inlet channel for circulating a coolant. The front or rear flange is configured to form, with the front or rear side face, at least one front outlet channel or rear outlet channel inside which a coolant is circulated. The front or rear outlet channel connected to the inlet channel opens at an outlet opening at the outer periphery of the front flange or rear flange.

Abstract: The invention relates to a method of manufacturing an air-intake duct (30) with induction noise and radiated noise attenuation that is intended to be connected to an internal combustion engine. The method comprises the steps of: —(a): providing a mould (1) comprising two moulding cavities (2), each cavity (2) having at least one groove (4) adapted for moulding a rib (32) and having at least two half-bores (5) adapted for moulding end sleeves (34-36), —(b): providing a core (8) adapted to be positioned between the cavities (2), for moulding an air-intake duct (30), —(c): positioning a tubular layer (9) of air-porous material on the core (8), —(d): positioning the core (8) with the tubular layer (9) between the moulding cavities (2), —(e): injecting a thermoplastic material into the, or each, groove (4) and into each half-bore (5) of each cavity (2), in order to overmould ribs (32) and end sleeves (34-36) onto the tubular layer (9) so as to form a duct (30).