Fuel feedback control system for internal combustion engine

Details Fuel feedback control system for internal combustion engine Fuel feedback control system for internal combustion engine

1980-04-15

1982-02-09

Nelli, R. A.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123480, 123489, 123437, 123438, F02B 3300, F02M 700, F02B 7510, F02D 304

Patent

active

043145370

ABSTRACT:
A system for controlling in a feedback control mode the air-fuel ratio of an air-fuel mixture to be supplied to an internal combustion engine in response to the deviation from a reference value, of an output of an exhaust sensor for sensing the concentration of a component of engine exhaust gas. The reference value is varied even during stopping of the feedback control due to an lowered engine temperature, thereby preventing an erroneous control. Additionally, the reference value and the value of a current flow to the exhaust sensor are varied immediately when the feedback control is stopped due to lowering in the engine temperature, thereby quickening the initiation of the feedback control.

REFERENCES:
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patent: 4132200 (1979-01-01), Asano et al.
patent: 4140086 (1979-02-01), Schnurle et al.
patent: 4144847 (1979-03-01), Hosaka
patent: 4153023 (1979-05-01), Asano et al.
patent: 4155335 (1979-05-01), Hosaka et al.
patent: 4167925 (1979-09-01), Hosaka et al.
patent: 4214563 (1980-07-01), Hosaka
patent: 4226221 (1980-10-01), Asano
patent: 4237829 (1980-12-01), Asano et al.
patent: 4240389 (1980-12-01), Shimazaki

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