Exhaust gas after-treatment system for internal combustion engines

The invention relates to an exhaust gas after-treatment system for reducing nitrogen oxide by means of SCR for a vehicle with an internal combustion engine comprising at least two exhaust gas pipes (21), which respectively contain an SCR-catalyst (24) and upstream therefrom respectively an additive injection chamber (22), and an additive tank (1) which supplies said injection chambers (22). On each of said exhaust gas pipes (21) an associated additive injection dosing unit (11) and an associated additive injection supply unit (10) are provided, said supply units (10) are respectively connected to the additive tank (1) by means of a forward line (2 +2.1, 2+2.2) and the respective forward line (2+2.1, 2+2.2) have essentially the same line lengths to the supply units (10). 本发明涉及种用于带有内燃机的车辆的借助SCR还原氮氧化物的废气后处理系统，该废气后处理系统包括至少两个废气线路(21)，废气线路分别包含SCR催化器(24)并且在所述SCR催化器的上游处分别具有添加剂喷射室(22)，并且该废气后处理系统包括供给这些喷射室(22)的添加剂罐(1)，其中，在每个所述废气线路(21)处均有个配属的添加剂计量单元(11)和个配属的添加剂输送单元(10)，其中所述输送单元(10)分别通过进料管线(2+2.1,2+2.2)与添加剂罐(1)连接，并且其中通向所述