Arrangement for supplying reducing agent into exhaust pipe of internal combustion engine of vehicle, has supply tank interconnected with auxiliary tank for supplying reducing agent additive, and control device interconnected with sensor

摘要

#CMT# #/CMT# The arrangement has a supply tank (3) interconnected with an auxiliary tank (8) for supplying a reducing agent additive. A reducing agent stored in the supply tank is supplied to a selective catalytic reduction (SCR)-catalyzer (2) over a metering device (7) that is connected upstream of the SCR-catalyzer in an exhaust pipe (1). The auxiliary tank is interconnected with the supply tank over a metering pump (9) that is interconnected with a control device (10). The control device is interconnected with a level sensor (11) arranged in the supply tank. #CMT# : #/CMT# An independent claim is also included for a method for supplying a reducing agent into an exhaust pipe of an internal combustion engine. #CMT#USE : #/CMT# Arrangement for supplying a reducing agent into an exhaust pipe of an internal combustion engine of a vehicle. #CMT#ADVANTAGE : #/CMT# The supply tank is interconnected with the auxiliary tank for supplying the reducing agent additive, thus reducing the risk of possible deposits, and hence avoiding failure of the combustion engine. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic partial side sectional view of an arrangement for supplying a reducing agent into an exhaust pipe of an internal combustion engine. 1 : Exhaust pipe 2 : SCR-catalyzer 3 : Supply tank 7 : Metering device 8 : Auxiliary tank 9 : Metering pump 10 : Control device 11 : Level sensor.