Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1988-07-07
1989-08-08
Dolinar, Andrew M.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 60285, 123489, F02B 7510, F02D 4114
Patent
active
048541249
ABSTRACT:
In a double air-fuel ratio sensor system including two air-fuel ratio sensors, upstream and downstream of a catalyst converter provided in an exhaust gas passage, a skip amount is calculated in accordance with the output of the downstream-side air-fuel ratio sensor, and a skip operation is performed upon an air-fuel ratio correction amount FAF by the skip amount when the output of the upstream-side air-fuel ratio sensor is switched from the rich side to the lean side, or vice versa. When the skip amount is larger than a predetermined value, the skip amount is divided into a plurality of amounts, thus enabling a plurality of skip operations to be performed upon the air-fuel ratio correction amount FAF.
REFERENCES:
patent: 3939654 (1976-02-01), Creps
patent: 4027477 (1977-06-01), Storey
patent: 4130095 (1978-12-01), Bowler et al.
patent: 4235204 (1980-11-01), Rice
patent: 4251989 (1981-02-01), Norimatsu et al.
patent: 4475517 (1984-10-01), Kobayashi et al.
patent: 4539958 (1985-09-01), Ito et al.
patent: 4561400 (1985-12-01), Hattori
patent: 4571683 (1986-02-01), Kobayashi et al.
patent: 4707985 (1987-11-01), Nagai et al.
Dolinar Andrew M.
Toyota Jidosha & Kabushiki Kaisha
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