Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1989-09-29
1991-06-18
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
36443105, F02M 5100, F02D 4114
Patent
active
050241990
ABSTRACT:
There is disclosed an air-fuel ratio control system for an automotive engine having a fuel injection system and an intake air quantity measurement system including an oxygen sensor, an intake air quantity sensor, and a coolant temperature sensor. The control system comprises a learning region setting element for setting a learning region in the manner of instruction for any of the learning regions of an air-fuel ratio corresponding to operational regions of any characteristic change of the injection or measurement system, a learning element for representatively learning a correction quantity of the injection system at a specified point of the regions and for learning the correction quantity of the measurement system at other points of regions in dependency on the instruction from the setting element, a basic fuel setting element for setting a basic fuel injection quantity in dependency on an engine speed, intake air quantity, and a learning value output from the learning element, and a fuel setting element for setting an actual fuel injection quantity corrected by the learning value corresponding to the operational regions.
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patent: 4862855 (1989-09-01), Manaka et al.
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patent: 4913122 (1990-04-01), Uchida et al.
Argenbright Tony M.
Fuji Jukogyo Kabushiki Kaisha
Mates Robert E.
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