Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1988-07-18
1990-10-23
Dolinar, Andrew M.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 60285, 123489, F02D 4114
Patent
active
049642723
ABSTRACT:
In an air-fuel ratio feedback control system including at least one air-fuel ratio sensor downstream of a catalyst converter provided in an exhaust gas passage, an actual air-fuel ratio is controlled in accordance with the output of the downstream-side air-fuel ratio sensor. When the engine is transferred from an open loop control state such as a fuel cut-off state or an OTP incremental state to an air-fuel ratio feedback control state for a stoichiometric air-fuel ratio by the downstream-side air-fuel ratio sensor, the speed of changing an air-fuel ratio correction amount in accordance with the output of the downstream-side air-fuel ratio sensor is at a conventional speed before the switching of the output of the downstream-side air-fuel ratio sensor, but thereafter (only immediately after the switching of the output of the downstream-side air-fuel ratio sensor or for a predetermined time period), this speed is increased.
REFERENCES:
patent: 3939654 (1976-02-01), Creps
patent: 4027477 (1977-06-01), Storey
patent: 4077364 (1978-03-01), Aoki
patent: 4089313 (1978-05-01), Asano et al.
patent: 4111162 (1978-09-01), Norimatsu et al.
patent: 4127088 (1978-11-01), Ezoe
patent: 4130095 (1978-12-01), Bowler et al.
patent: 4177787 (1979-12-01), Hattori et al.
patent: 4178884 (1979-12-01), Norimatsu et al.
patent: 4235204 (1980-11-01), Rice
patent: 4244340 (1981-01-01), Herth et al.
patent: 4251989 (1981-02-01), Norimatsu et al.
patent: 4401086 (1983-08-01), Miyagi
patent: 4462373 (1984-07-01), Kanno
patent: 4475517 (1984-10-01), Kobayashi et al.
patent: 4502443 (1985-03-01), Hasegawa 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: 4693076 (1987-09-01), Chujo et al.
patent: 4707985 (1987-11-01), Nagai et al.
patent: 4712373 (1987-12-01), Nagai et al.
patent: 4720973 (1988-01-01), Katsuno
patent: 4811557 (1989-03-01), Okumura et al.
Dolinar Andrew M.
Toyota Jidosha & Kabushiki Kaisha
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