CPC F01N 3/2066 (2013.01) [F01N 2530/18 (2013.01); F01N 2610/02 (2013.01); F01N 2610/10 (2013.01); F01N 2610/1406 (2013.01); F01N 2610/1433 (2013.01)] | 19 Claims |
1. An attachment device configured for a module configured for dispensing an aqueous solution contained in a tank on board a motor vehicle, the attachment device comprising:
a first through-hole suitable for discharging the aqueous solution pumped by a pump,
a second through-hole suitable for supplying the pump with the aqueous solution,
a heater;
an assembly of a pump stator and a heat diffuser, the heat diffuser comprising a base and a first plurality of walls that are substantially vertical with respect to the base and define at least one first internal volume; and
a second plurality of walls that are substantially vertical with respect to the base defines a second internal volume,
wherein the base and/or at least one wall that is substantially vertical with respect to the base comprises a volume for positioning the pump stator and/or a first attaching element for the pump stator and/or a second attaching element for the heater,
wherein the second internal volume is part of the first internal volume,
wherein the second internal volume serves as a housing for the pump stator, and
wherein the assembly, of the pump stator and heat diffuser, is overmolded together with a plastic material.
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