Title:
EXHAUST EMISSION CONTROL SYSTEM AND POISONING CONTROL METHOD FOR EXHAUST EMISSION CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP2018100600
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust emission control system capable of preventing poisoning substances such as sulfur oxide and noble metal from adhering to an urea selective reduction type catalyst device and an ammonia slip catalyst device at a rear stage and thus maintaining exhaust emission control performance at a high level in the exhaust emission control system in which an oxidation catalyst device, a particulate collecting device and the urea selective reduction type catalyst device are provided in this order from the upstream side in an exhaust passage of an internal combustion engine, and a poisoning control method for the exhaust emission control system.SOLUTION: An exhaust bypass passage 11b including a poisoning substance adsorbing device 17 is provided in parallel with an exhaust main passage 11a that is an exhaust passage 11 between a particulate collecting device 13 and a selective reduction type catalyst device 14. An exhaust emission control device comprises: exhaust switching mechanisms 18a, 18b for switching a flow passage of exhaust gas G between the exhaust main passage 11a and the exhaust bypass passage 11b; and a control device for controlling the exhaust switching mechanisms 18a, 18b.SELECTED DRAWING: Figure 1
More Like This:
| JP7302541 | exhaust treatment system |
| JPH0610119 | [Name of device] Particulate trap filter |
| WO/2014/192846 | ERROR DIAGNOSTIC DEVICE FOR EXHAUST PURIFICATION DEVICE |
Inventors:
HIDAKA MIYUKI
Application Number:
JP2016245724A
Publication Date:
June 28, 2018
Filing Date:
December 19, 2016
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F01N3/18; B01D53/94; F01N3/023; F01N3/033; F01N3/035; F01N3/08; F01N3/10; F01N3/24
Domestic Patent References:
| JP2016121547A | 2016-07-07 | |||
| JP2008272617A | 2008-11-13 | |||
| JPH06272546A | 1994-09-27 | |||
| JP2012127323A | 2012-07-05 |
Foreign References:
| WO2011162030A1 | 2011-12-29 | |||
| WO2016130272A1 | 2016-08-18 |
Attorney, Agent or Firm:
Seiryu International Patent Service Corporation
Takayoshi in the daytime
Masao Sakaizawa
Yuki Yamada
Takayoshi in the daytime
Masao Sakaizawa
Yuki Yamada
Previous Patent: A control device and combustion chamber wall Temperature estimation method of an internal-combustion...
Next Patent: Centrifugal fan
Next Patent: Centrifugal fan