Compensation for inherent fluctuation in output level of exhaust

Internal-combustion engines – Noncompression

Patent

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123119EC, F02B 300

Patent

active

041202694

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, a fluctuation in the output characteristic of an exhaust sensor due to deterioration or low temperature is compensated for by varying a reference voltage, which serves as a standard of comparison, in response to a change in a maximal value of the sensor output voltage.

REFERENCES:
patent: 3973529 (1976-10-01), Wessel et al.

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