The straight cellpartition wall (22) has at an exhaust gas inlet-side end an introduction promoting unit (60) for promoting the introduction of exhaust gas into each straight cell (21).
直室隔壁（22） 在排气入口侧端部具有促进排气向各直室（21）内导入的导入促进部（60）。
3
Place specified products as 4 in partition, one CONN. each cell.