Abstract: The invention is an electrical machine, comprising a stator being radial passages (102) circumferentially arranged along the stator. These radial passages (102) are delimited by radial teeth (101) and magnetic flux generators are housed in these radial passages (102). Furthermore, radial passages (102) comprise fluid circulation galleries facing the magnetic flux generators. The electrical machine comprises at least one aerodynamic appendages (85, 90), coaxial with the electrical machine, and arranged at a longitudinal end of the electrical machine. Aerodynamic appendages (85, 90) comprise a first part for guiding the fluid passing through the circulation galleries, and a second part extending radially along at least one of radial teeth (101) and having an aerodynamic profile for guiding the fluid.

Abstract: The present invention is a compression-ignition direct-injection internal-combustion engine comprising at least a cylinder (10), a cylinder head (12) carrying fuel injection means (14), a piston (16) sliding in this cylinder, a combustion chamber (34) having on one side an upper face (44) of the piston comprising a projection (48) extending in the direction of the cylinder head and located at the center of a concave bowl (46). The engine comprises an injector projecting fuel in at least two fuel jet sheets with sheet projection angles (A1, A2), a lower sheet (36) of jet axis C1 and an upper sheet (38) of jet axis C2, at least two mixing zones (Z1, Z2) of the combustion chamber. According to the invention, one of the zones comprises a toroidal volume (64) of center B into which fuel jets (40) of the lower jet are injected in such a way that axis C1 of the lower jet is contained between center B and projection (48).