Title:
Internal combustion engine control device
Document Type and Number:
Japanese Patent JP6350397
Kind Code:
B2
Abstract:
When switching an operation mode from a stoichiometric mode to a lean mode, a rich spike that supplies excessive fuel relative to a theoretical air-fuel ratio is executed. If the temperature of the SCR is greater than or equal to an upper limit temperature at a time of the switching, after execution of the rich spike, the switching to the lean mode is executed after executing transient control that makes EGR rate higher than EGR rate in the lean mode and makes the incylinder air-fuel ratio an air-fuel ratio between the theoretical air-fuel ratio and the air-fuel ratio in the lean mode.
Inventors:
Shintaro Hotta
Application Number:
JP2015116857A
Publication Date:
July 04, 2018
Filing Date:
June 09, 2015
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D45/00; B01D53/94; F01N3/08; F01N3/24; F01N3/28; F02D21/08; F02D41/02; F02D41/04; F02D43/00; F02M26/06
Domestic Patent References:
| JP2014001682A | ||||
| JP10047042A | ||||
| JP2000257470A | ||||
| JP2012237296A | ||||
| JP2016223294A | ||||
| JP2013019321A |
Foreign References:
| WO2013118252A1 | ||||
| WO2014024274A1 | ||||
| WO2010109667A1 | ||||
| US20080196397 |
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi
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