Closed loop air-fuel ratio control system for use with internal

Details Closed loop air-fuel ratio control system for use with internal Closed loop air-fuel ratio control system for use with internal

1975-11-26

1978-10-24

Schwadron, Martin P.

Internal-combustion engines

Noncompression

123 32EE, 123119EC, 261121B, F02B 310

Patent

active

041215478

ABSTRACT:
In an electronic closed loop control system for controlling the air-fuel ratio of an air-fuel mixture fed to an internal combustion engine to an optimum, the frequency of a dither signal is discretely or continuously changed to change a repetition rate of a pulsating signal in order to prevent engine vibration discomfortable to a driver, the pulsating signal being applied to at least one electromagnetic valve provided for regulating the air-fuel ratio of the air-fuel mixture.

REFERENCES:
patent: 3612009 (1971-10-01), Kamazuka et al.
patent: 3789816 (1974-02-01), Taplin et al.
patent: 3822678 (1974-07-01), Bassot et al.
patent: 3835820 (1974-09-01), Fujisawa
patent: 3851635 (1974-12-01), Martin et al.
patent: 3921612 (1975-11-01), Aono
patent: 3935845 (1976-02-01), Aono et al.
patent: 3938479 (1976-02-01), Oberstadt

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