Title:
CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2016/016701
Kind Code:
A3
Abstract:
A control apparatus for an internal combustion engine is provided. The control apparatus includes an electronic control unit. The electronic control unit is configured to: (i) set a target air-fuel ratio at a lean air-fuel ratio that is leaner than a theoretical air-fuel ratio from time at which an output air-fuel ratio of a downstream-side air-fuel ratio sensor becomes equal to or lower than a rich determination air-fuel ratio; and (iii) set the target air- fuel ratio at a rich air-fuel ratio that is richer than the theoretical air- fuel ratio after an oxygen storage amount of the exhaust gas control catalyst becomes equal to or larger than the specified switching reference storage amount and the output air-fuel ratio of the downstream-side air-fuel ratio sensor becomes higher than the rich determination air-fuel ratio.
Inventors:
OKAZAKI SHUNTARO (JP)
NAKAGAWA NORIHISA (JP)
YAMAGUCHI YUJI (JP)
NAKAGAWA NORIHISA (JP)
YAMAGUCHI YUJI (JP)
Application Number:
PCT/IB2015/001222
Publication Date:
March 24, 2016
Filing Date:
July 22, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
International Classes:
F02D41/02; F02D41/24
Domestic Patent References:
| WO2009013600A2 | 2009-01-29 |
Foreign References:
| US20080066727A1 | 2008-03-20 | |||
| JP2003049685A | 2003-02-21 | |||
| US20030213233A1 | 2003-11-20 |
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