EXHAUST GAS PROCESSING DEVICE

摘要

Positioning pins (40) are respectively provided to front and rear flange sections (34B, 34C) of a tube body (33) for a filter.  A cutout groove (24) is provided in a flange section (23C) of an upstream tube body (22), and a cutout groove (30) is provided in a flange section (29C) of a downstream tube body (28).  When the tube body (33) for a filter is connected between the upstream tube body (22) and the downstream tube body (28), the front and rear positioning pins (40) provided to the tube body (33) for a filter respectively engage with the cutout groove (24) in the upstream tube body (22) and with the cutout groove (30) in the downstream tube body (28) to coaxially position the tube body (33) for filter to both the upstream tube body (22) and the downstream tube body (28).  The tube body (33) for a filter can be easily connected again between the upstream tube body (22) and the downstream tube body (28) after a DPF (35) is cleaned.