Title:
排ガス浄化システム
Document Type and Number:
Japanese Patent JP5625475
Kind Code:
B2
Abstract:
Provided is an exhaust gas purification system that can prevent adhesion of urea water in a dosing valve during DPF regeneration. An exhaust gas purification system 100 includes a DCU 126 that controls a supply module 106 to inject or return urea water inside a dosing valve 104 to a urea tank 105 in order to remove urea water accumulated in the dosing valve 104 when receiving a DPF regeneration authorization request from an ECM 125, and then transmits a DPF regeneration authorization to the ECM 125 when determining that an NH 3 amount of an SCR catalyst is less than or equal to a prescribed value.
Inventors:
小野寺 貴夫
發田 真未
嶺澤 正信
發田 真未
嶺澤 正信
Application Number:
JP2010113756A
Publication Date:
November 19, 2014
Filing Date:
May 17, 2010
Export Citation:
Assignee:
いすゞ自動車株式会社
International Classes:
F01N3/08; F01N3/023; F01N3/035; F01N9/00
Attorney, Agent or Firm:
Nobuo Kinutani