Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1990-01-18
1990-12-18
Neill, Raymond A.
Internal-combustion engines
Charge forming device
Fuel injection system
123486, 123480, F02M 5100
Patent
active
049778811
ABSTRACT:
There is disclosed an air-fuel ratio control system for an automotive engine having a fuel injection system including injectors, an intake air quantity measuring system including an intake air quantity sensor, and a canister purge control system corresponding to a necessity. The air-fuel ratio control system comprises a learning designation circuit for selecting a learning region for the measuring system or the injection system, a measuring system learning circuit for learning a correction amount of the measuring system responsive to the selection of the designation circuit, an injection system learning circuit for learning a correction amount of the injection system responsive to the selection, and a fuel quantity setting circuit for setting the quantity in dependency on an engine speed and an intake air quantity and for setting an actual fuel injection quantity by correcting the basic fuel injection quantity with the both correction amount.
REFERENCES:
patent: 4905653 (1990-03-01), Manaka et al.
patent: 4907555 (1990-03-01), Manaka et al.
patent: 4913122 (1990-04-01), Uchida et al.
patent: 4924836 (1990-05-01), Uchida et al.
patent: 4924837 (1990-05-01), Chujo et al.
patent: 4928654 (1990-05-01), Hosaka
Abe Kunihiro
Sakamoto Masanori
Fuji Jukogyo Kabushiki Kaisha
Neill Raymond A.
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