| 摘要 |
#CMT# #/CMT# The line (10) has a double-walled designed region (14), where an intermediate space (20) is provided between an outer wall (16) and an inner wall (18) of the double-walled region. A heating device (24) is arranged in the intermediate space for heating a heatable medium flowing through the intermediate space. The heatable medium is separately enclosed in the intermediate space from an environment of the exhaust line in a fluid-tight manner. The heating device has an electrical heating element that is designed as a heating resistor. #CMT#USE : #/CMT# Exhaust line for supplying exhaust gas from an internal combustion engine to an exhaust gas treatment device in a motor vehicle. #CMT#ADVANTAGE : #/CMT# The heating device is arranged in the intermediate space, thus enabling direct and improved heating of medium in the intermediate space without the need of an additional heating device. The crystallization risk of urea in the reducing agent, which is supplied to the selective catalytic reduction catalyst, is reduced during quick heating of exhaust line. The fuel consumption of the internal combustion engine is reduced due to high efficiency of the exhaust gas treatment device and due to short time for regenerating the particle filter. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a front view of an exhaust line for supplying exhaust gas of an internal combustion engine in a motor vehicle. 10 : Exhaust line 14 : Double-walled designed region 16 : Outer wall 18 : Inner wall 20 : Intermediate space 24 : Heating device. |
