Exhaust gas aftertreatment arrangement for motor vehicle, has urea tank connected with supplying device over supply pipe, and heated portion staying in thermal contact with exhaust gas pipe to heat supply pipe with waste heat of exhaust gas

摘要

The arrangement (10) has a urea tank connected with a supplying device (16) over a supply pipe (12) for supplying urea solution in an exhaust gas pipe (20) of a motor vehicle, where a portion (30) of the supply pipe is heated. The heated portion stays in thermal contact with the exhaust gas pipe for heating the supply pipe with waste heat of exhaust gas. The heated portion rotates lateral area of the exhaust gas pipe in spiraliform. The heated portion is surrounded on a side turning away from the exhaust gas pipe by a protective pipe (32).