Heatable reducing agent tank for supplying aqueous urea solution to selective catalytic reduction exhaust gas cleaning system for internal combustion engine of vehicle, has chamber flow-technically coupled with removal point

摘要

#CMT# #/CMT# The tank (1) has electrical heating elements (3) provided in respective chambers (2). Each chamber is flow-technically coupled with a removal point (6). A reducing agent line (5) is led from each chamber to the removal point. The heating elements are activated and regulated by a control device based on a temperature and/or a filling level in the associated chambers. The reducing agent line is subdivided into separately heatable sections. A thermal insulator is provided between the chambers. The control device activates heating of the reducing agent line during freezing hazard. #CMT#USE : #/CMT# Heatable reducing agent tank for supplying a liquid reducing agent i.e. aqueous urea solution, to a selective catalytic reduction (SCR) exhaust gas cleaning system for an internal combustion engine of a vehicle for exhaust gas treatment to reduce nitrogen oxides. #CMT#ADVANTAGE : #/CMT# The reducing agent line is led from each chamber to the removal point, thus ensuring safe removal of the reducing agent even in very low ambient temperatures. The tank ensures safe supply of the liquid reducing agent to the cleaning system even in very low ambient temperatures using reduced energy expenditure. The chambers are designed in a compact manner, thus allowing quick defrosting of small quantity of the reducing agent, and hence heating the tank with less heating power during longer service life of the vehicle. The tank avoids formation of cold bridges in the chambers. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a simplified front sectional view of a heatable reducing agent tank divided into multiple chambers. 1 : Heatable reducing agent tank 2 : Chambers 3 : Electrical heating elements 4 : Reducing agent 5 : Reducing agent line 6 : Removal point 7 : Connection region.