Electronic closed loop air-fuel ratio control system

Details Electronic closed loop air-fuel ratio control system Electronic closed loop air-fuel ratio control system

1977-02-09

1978-12-26

Myhre, Charles J.

Internal-combustion engines

Noncompression

123119EC, 60276, 60285, F02B 308, F02M 712, F01N 308

Patent

active

041310896

ABSTRACT:
A reference voltage, which is compared with an output voltage of an exhaust gas sensor in a differential signal generator of an electronic closed loop air-fuel ratio control system, changes depending upon a mean value of an output of the exhaust gas sensor provided in an exhaust pipe extending from an internal combustion engine. Furthermore, the magnitude of the reference voltage is limited in such a manner as to be within a predetermined range, or in other words, the magnitude of the reference voltage is limited at at least one of an upper and a lower values thereof.

REFERENCES:
patent: 3815561 (1974-06-01), Seitz
patent: 3834361 (1974-09-01), Keely
patent: 3938479 (1976-02-01), Oberstadt
patent: 3939654 (1976-02-01), Creps
patent: 4015566 (1977-04-01), Wahl
patent: 4019474 (1977-04-01), Nishimiya et al.
patent: 4027637 (1977-06-01), Aono
patent: 4030462 (1977-06-01), Sassayama et al.

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