Attachment device for a module for dispensing an aqueous solution contained in a tank on board a motor vehicle

Abstract

The invention relates to an attachment device () for a module for dispensing an aqueous solution contained in a tank on board a motor vehicle. According to the invention, such an attachment device () comprises a pump stator (), a heating means and a heat diffuser () which comprises a base () and a first plurality of walls () that are substantially vertical with respect to said base () and define at least one first internal volume (), said base () and/or at least one wall that is substantially vertical with respect to the base () comprising at least one means () for positioning the pump stator and/or a first means () for attaching the pump stator and/or at least one second means () for attaching the heating means, the pump stator () and heat diffuser () assembly being overmolded with a plastic material, the attachment device () comprising at least one first through-hole (), preferably in the region of the base of the attachment device (), suitable for discharging the aqueous solution pumped by the pump, and a second through-hole () suitable for supplying the pump with aqueous solution.