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1. (WO2017150538) EXHAUST GAS PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2017/150538    International Application No.:    PCT/JP2017/007817
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: F01N 3/28
F01N 3/08
F01N 3/36
Applicants: ISUZU MOTORS LIMITED
いすゞ自動車株式会社
Inventors: KAWASHIMA Yukihiro
川島 幸博
MIZUKAMI Nao
水上 直
SUZUKI Yasuyuki
鈴木 泰順
Title: EXHAUST GAS PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE
Abstract:
This exhaust gas purification device 100 for an internal combustion engine 1 is provided with an exhaust pipe 2, a post-treatment unit 3, and a casing 4 in which the post-treatment unit is accommodated. The post-treatment unit 3 is provided with: a selective reduction NOx catalyst 10c; pipe members 31, 33, 34, 35 which extend from the upstream side towards the selective reduction NOx catalyst 10c; and an addition valve 36 for adding urea water. An opening 44 which enables an area Uf where the urea water accumulates to be attached and detached, said area being positioned between the addition valve 36 and the selective reduction NOx catalyst 10c, is provided in the casing 4. A cover 5 for covering the opening 44 is provided.