Invention Application
- Patent Title: EXHAUST GAS PURIFICATION SYSTEM
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Application No.: US15510660Application Date: 2015-09-11
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Publication No.: US20180094596A1Publication Date: 2018-04-05
- Inventor: Masaaki NISHITO , Teruo NAKADA , Takayuki SAKAMOTO , Daiji NAGAOKA , Masashi GABE
- Applicant: ISUZU MOTORS LIMITED
- Priority: JP2014-186758 20140912
- International Application: PCT/JP2015/075875 WO 20150911
- Main IPC: F02D41/02
- IPC: F02D41/02 ; F01N3/20 ; F02D41/18 ; F02D41/40

Abstract:
An exhaust purification system includes: an NOx reduction type catalyst, which is provided in an exhaust passage; an intake air amount sensor, which detects an intake air amount of the internal combustion engine; and a controller, which executes a regeneration treatment that recovers an NOx purification capacity of the NOx reduction type catalyst by switching an exhaust air fuel ratio from a lean state to a rich state by using: an air-system control to reduce the intake air amount; and an injection-system control to increase a fuel injection amount, wherein, in response to a detection value of the intake air amount sensor, the controller changes at least one of a fuel injection timing and the fuel injection amount in the internal combustion engine, in at least one period of switching of: a period of starting the regeneration treatment; and a period of ending the regeneration treatment.
Public/Granted literature
- US10337433B2 Exhaust purification system Public/Granted day:2019-07-02
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