Internal-combustion engines – Noncompression
Patent
1977-09-07
1979-09-11
Myhre, Charles J.
Internal-combustion engines
Noncompression
60276, 60285, F02B 300, F02B 7510
Patent
active
041673964
ABSTRACT:
In an air-to-fuel ratio feedback control system of the type in which the output detection signal of an air-to-fuel ratio detector adapted to detect the concentration of an exhaust gas constituent of an internal combustion engine is compared with a preset value in a comparison circuit whose output signal in turn is utilized to feedback control the air-to-fuel ratio of mixture supplied to the engine, the preset value of the comparison circuit is changed to another value in response to the occurrence of a condition which requires the stopping of the feedback control of the air-to-fuel ratio of mixture supplied to the engine, thereby preventing the occurrence of malfunction during transient periods such as the periods of opening and closing of the feedback control system loop.
REFERENCES:
patent: 3916848 (1975-11-01), Schmidt
patent: 3938479 (1976-02-01), Oberstadt
patent: 3939654 (1976-02-01), Creps
patent: 3949551 (1976-04-01), Eichler et al.
patent: 3973529 (1976-08-01), Wessel et al.
patent: 3986352 (1976-10-01), Casey
patent: 3990411 (1976-11-01), Oberstadt et al.
patent: 4015428 (1977-04-01), Kawai
patent: 4027477 (1977-06-01), Storey
Ito Nobuyuki
Kobayashi Nobuyuki
Kondo Toshio
Norimatsu Hideaki
Lall P. S.
Myhre Charles J.
Nippondenso Co. Ltd.
Toyota Jidosha Kogyo Kabushiki Kaisha
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