Supply System for a Medium, in Particular for Treating Exhaust Gases of an Internal Combustion Engine; Exhaust Gas Cleaning Device; and Method for Operating a Supply System

摘要

The invention relates to a medium supply system, in particular of an exhaust gas cleaning device for treating the exhaust gas of an internal combustion engine comprising a storage tank ( 10 ) and a supply line ( 11 ) which is connected to the storage tank ( 10 ) for supplying the medium to a dosing unit ( 14 ) connected to an exhaust pipe ( 12 ) and to a recycling line ( 13 ) for recycling the medium to the storage tank ( 10 ). Said invention is characterised in that the supply line ( 11 ) and/or the recycling line ( 13 ) are provided with at least one conduit area ( 33 ) comprising at least one first ( 15 ) and second ( 16 ) parallel partial channels for the medium circulation, wherein said partial channels ( 15, 16 ) exhibit different insulation properties. An exhaust gas cleaning device comprising the inventive supply system and a method for the operation thereof are also disclosed.