Title:
EXHAUST GAS TREATMENT METHOD USING LNT, AND APPARATUS THEREFOR
Document Type and Number:
Japanese Patent JP2017150326
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust gas treatment method using an LNT, capable of improving a high-temperature range (heavy load range) and improving a rich reduction efficiency and a desulfurization efficiency, and a device therefor.SOLUTION: A 1stLNT 24 and a CSF 25 are arranged close to an engine E, and a 2ndLNT 28 is arranged at a position, in which an exhaust gas temperature drops by 100°C to 200°C. An HC injector 29 is arranged in-between to perform an additional injection of HC in said HC injector 29 at a rich reduction time, so that a desulfurization temperature of the 2ndLNT 28 is controlled at an S purge time by the HC injection from the HC injector 29.SELECTED DRAWING: Figure 1
Inventors:
NAGAOKA TAIJI
Application Number:
JP2016031058A
Publication Date:
August 31, 2017
Filing Date:
February 22, 2016
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F01N3/20; B01D53/94; F01N3/08; F01N3/24
Attorney, Agent or Firm:
Haruhisa Kinutani
Hiroyuki Hashiyama
Hiroyuki Hashiyama