Abstract: An automotive compressor is provided having a casing defining an intake section for fluid for compression, and a delivery section for delivering the compressed fluid. An impeller is movable angularly inside the casing to increase the pressure of the fluid. A distributor is carried by the intake section of the casing to conduct the fluid for compression to the impeller. The casing and the distributor are defined by separate members connected releasably to each other.

Abstract: A motor-compressor is provided that includes a first compression stage with a primary impeller and at least one delivery duct, a second compression stage with a secondary impeller spinning in a predetermined direction of rotation, and at least one transfer duct placed so as to put the delivery duct in communication with a fluid conveyor for the second stage. The transfer duct is shaped in a way to create a fluid flow entering the conveyor with a substantially helical course and a direction of rotation opposite to the direction of rotation of the secondary impeller.

Abstract: A recirculating assembly is provided for a fuel cell system having an electrochemical conversion unit which receives a combustible fluid at an inlet, and supplies electric energy at an electrical output, surplus combustible fluid at a first fluid outlet, and a waste fluid at a second fluid outlet. The recirculating assembly has a compressor for increasing the pressure of the surplus combustible fluid not used by the conversion unit, so as to make it once more available to the conversion unit. The drive is powered by residual energy of the waste fluid to drive the compressor.

Abstract: An automotive compressor is provided having a casing defining an intake section for fluid for compression, and a delivery section for delivering the compressed fluid. An impeller is movable angularly inside the casing to increase the pressure of the fluid. A distributor is carried by the intake section of the casing to conduct the fluid for compression to the impeller. The casing and the distributor are defined by separate members connected releasably to each other.