Reducing agent supply system for exhaust gas after-treatment device in internal-combustion engine i.e. diesel engine, has extension element that is formed as folded bellow element and integrated into reducing agent line

摘要

The system has an extension element (1) that is formed as a folded bellow element. The extension element is integrated into a reducing agent line through which the reducing agent flows during operation of reducing agent supply system. Multiple non-springy designed bellows (2) are provided in the extension element. The receiving volume of the extension element is about 10 percentage of the receiving volume of a reducing agent line (3).