Title:
排気浄化システム
Document Type and Number:
Japanese Patent JP6455237
Kind Code:
B2
Abstract:
Provided is an exhaust purification system including: an NOx occlusion reduction type catalyst (32) that is provided in an exhaust system of an internal combustion engine (10), and occludes NOx when an exhaust gas is in a lean state, and reduces the NOx when the exhaust gas is in a rich state; a regeneration control unit (60) that executes a regeneration process of bringing the exhaust gas into a rich state to reduce the NOx occluded in the NOx occlusion reduction type catalyst (32); a storing unit (73) that stores an exhaust lambda prediction value in advance when the regeneration process is executed; a reduction amount estimating unit (74) that estimates an NOx reduction amount when the regeneration process is executed; and a prohibition unit (75) that prohibits the execution of the regeneration process by the regeneration control unit (60) when the estimated NOx reduction amount is less than a predetermined lower limit threshold.
Inventors:
Teruo Nakata
Takayuki Sakamoto
Daiji Nagaoka
Hiroyuki Yuza
Takayuki Sakamoto
Daiji Nagaoka
Hiroyuki Yuza
Application Number:
JP2015042668A
Publication Date:
January 23, 2019
Filing Date:
March 04, 2015
Export Citation:
Assignee:
Isuzu Motors Limited
International Classes:
F01N3/20; F01N3/08
Domestic Patent References:
| JP2005291098A | ||||
| JP2014066232A | ||||
| JP2004340137A | ||||
| JP4349119B2 | ||||
| JP5825424B2 |
Attorney, Agent or Firm:
Akio Ikeda