This multi-part assembly, which is developed together with our customer and produced and assembled by us, is the heat sink of the dosing module, which is installed in the exhaust gas aftertreatment area. This injects the urea solution (AdBlue) into the exhaust tract and thus reduces nitrogen oxide emissions.
The tightness is realised exclusively through the assembly, in which a metal contact is created, and external joining technologies are completely dispensed with. This places extremely high demands on the precision and surface quality of the components. Individual components have to be machined after the deep-drawing process, as the high tolerances cannot be realised due to the material. It should also be emphasised that the assembly, including an integrated leak test, is installed automatically.