发明申请
US20170362979A1 EXHAUST PURIFICATION SYSTEM AND METHOD FOR RESTORING NOx PURIFICATION CAPACITY
审中-公开

基本信息:
- 专利标题: EXHAUST PURIFICATION SYSTEM AND METHOD FOR RESTORING NOx PURIFICATION CAPACITY
- 申请号:US15540017 申请日:2015-12-25
- 公开(公告)号:US20170362979A1 公开(公告)日:2017-12-21
- 发明人: Teruo NAKADA , Takayuki SAKAMOTO , Daiji NAGAOKA
- 申请人: ISUZU MOTORS LIMITED
- 优先权: JP2014-264965 20141226
- 国际申请: PCT/JP2015/086375 WO 20151225
- 主分类号: F01N3/08
- IPC分类号: F01N3/08 ; F01N13/00 ; F01N11/00 ; B01D53/94
摘要:
An exhaust purification system includes: a NOx reduction catalyst for reducing and purifying NOx in an exhaust gas; a catalyst regeneration control module for executing a catalyst regeneration process of restoring a NOx purification capacity of the NOx reduction catalyst by switching an air-fuel ratio of the exhaust gas from a lean state to a rich state by using in parallel an air system control to reduce an intake air amount and an injection system control to increase a fuel injection amount; an exhaust gas temperature sensor that is provided on a downstream side of the NOx reduction catalyst on an exhaust passageway; a catalyst temperature estimating module for estimating a catalyst temperature of the NOx reduction catalyst; a temperature sensor value estimating module for estimating a sensor value of the exhaust gas temperature sensor; and an abnormality determination module for determining on an abnormality of a catalyst regeneration process.
公开/授权文献:
IPC结构图谱:
F | 机械工程;照明;加热;武器;爆破 |
--F01 | 一般机器或发动机;一般的发动机装置;蒸汽机 |
----F01N | 一般机器或发动机的气流消音器或排气装置;内燃机的气流消音器或排气装置 |
------F01N3/00 | 排气或消音装置,它具有净化的、使变为无毒的或其他的排气处理装置 |
--------F01N3/08 | .使变为无害 |