Title:
排気ガス浄化システム
Document Type and Number:
Japanese Patent JP5608962
Kind Code:
B2
Abstract:
Catalytic activity or NOx reduction is suitably performed at low temperatures. The system comprises a post-treatment device (13), which is provided in the exhaust passage (12) of an engine (11) and contains catalysts (14, 15, 16), which are activated by HC in the exhaust gas, a fuel supply means (23) that supplies a fuel containing a high-boiling point HC and a low-boiling point HC to the exhaust passage (12) on the upstream side of the post-treatment device (13) when the temperature of the exhaust gas supplied to the post-treatment device (13) is lower than a prescribed temperature, and an HC trap catalyst (17) that is provided in the exhaust passage (12) between the post-treatment device (13) and the fuel supply means (23) and that adsorbs the high-boiling point HC but allows the passage of the low-boiling point HC in the HC included in the fuel supplied from the fuel supply means (23) into the exhaust passage (12).
Inventors:
長岡 大治
我部 正志
我部 正志
Application Number:
JP2008192263A
Publication Date:
October 22, 2014
Filing Date:
July 25, 2008
Export Citation:
Assignee:
いすゞ自動車株式会社
International Classes:
F01N3/20; B01D53/94; F01N3/08; F01N3/28
Attorney, Agent or Firm:
Nobuo Kinutani