Feedback air-fuel ratio control system for internal combustion e

Details Feedback air-fuel ratio control system for internal combustion e Feedback air-fuel ratio control system for internal combustion e

1976-10-20

1978-11-07

Myhre, Charles J.

Internal-combustion engines

Noncompression

123119EC, 123 32EG, 60276, 60285, F02B 308, F02M 712, F01N 308

Patent

active

041239997

ABSTRACT:
In a feedback control system for maintaining the air fuel ratio of a combustible mixture fed to an internal combustion engine at a preset ratio based on a feedback signal representing the concentration of a certain component of the exhaust gas, a control signal producing circuit is provided with a sub-system for holding the control signal constantly at a preset level for a predetermined amount of time immediately after the start of the fuel feed to the engine in order to prevent an unintentional lowering of the air-fuel ratio due to a delay in the development of the feedback signal from the start of the fuel feed.

REFERENCES:
patent: 2389797 (1945-11-01), McNeil
patent: 3875907 (1975-04-01), Wessel et al.
patent: 3900012 (1975-08-01), Wahl et al.
patent: 3916170 (1975-10-01), Norimatsu et al.
patent: 3919983 (1975-11-01), Wahl et al.
patent: 3960118 (1976-06-01), Konomi et al.
patent: 3973529 (1976-08-01), Wessel et al.
patent: 4006718 (1977-02-01), Konomi
patent: 4019470 (1977-04-01), Asano
patent: 4029061 (1977-06-01), Asano

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