Abstract: An aggregate for feeding fuel from a supply tank to an internal combustion engine of a motor vehicle has a feed pump formed as a flow pump and having a disk-shaped impeller and a pump chamber in which the impeller rotates and which is limited in an axial direction by two end walls spaced from one another and in a radial direction by a ring wall arranged so that substantially parallel axial gaps are formed between end surfaces of the impeller and end surfaces of the pump chamber facing the end surfaces of the impeller.

Abstract: The peripheral pump includes a wall bounding a pump chamber and provided with a substantially annular delivery port with a base having a circular segment with a center; a circular cylindrical impeller revolving in the pump chamber, having two end faces and a rim of blades disposed at intervals along a circumference of the impeller so that a groove-like gap is formed between two adjacent blades, the groove-like gap having a base, as seen in a longitudinal section through the pump, having a circular segment with a center substantially coincident with the center of the circular segment of the delivery port, the center of the circular segments being located within an outer contour of the impeller.