Power plants – Internal combustion engine with treatment or handling of... – Having means analyzing composition of exhaust gas
Patent
1992-12-14
1994-08-16
Miller, Carl S.
Power plants
Internal combustion engine with treatment or handling of...
Having means analyzing composition of exhaust gas
60277, 123688, F02D 4114
Patent
active
053375556
ABSTRACT:
A failure detection system for an air-to-fuel ratio control system includes a exhaust gas monitor positioned upstream of a catalytic converter for monitoring an emission content of exhaust gas based on which an air-to-fuel ratio is feedback controlled so as to be maintained at a desired ratio. The system has another exhaust gas monitor positioned downstream of the catalytic converter for monitoring an emission content of exhaust gas passed through the catalytic converter. Functional failures of the exhaust gas monitor of the air-to-fuel ratio control system is judged to be present on the basis of detected emission contents only when a predetermined threshold amount of intake air is detected.
REFERENCES:
patent: 4933863 (1990-06-01), Okano
patent: 4947818 (1990-08-01), Kamohara
patent: 5077971 (1992-01-01), Kumagai
patent: 5101625 (1992-04-01), Sugino
patent: 5134847 (1992-08-01), Ogawa
patent: 5154054 (1992-10-01), Nakane
patent: 5157920 (1992-10-01), Nakaniwa
patent: 5168700 (1992-12-01), Furuya
patent: 5220788 (1993-06-01), Kurita
patent: 5224345 (1993-07-01), Schnaibel
patent: 5237818 (1993-08-01), Ishii
Matsunaga Takao
Shinmoto Kazuhiro
Terada Koichi
Tokuda Shoji
Yamamoto Yoshimi
Mazda Motor Corporation
Miller Carl S.
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