Fuel control apparatus

Details Fuel control apparatus Fuel control apparatus

1988-09-14

1989-09-26

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123494, F02M 5100

Patent

active

048692239

ABSTRACT:
Signals from a intake air quantity sensor disposed in the intake air passage of an internal combustion engine are calculated to obtain a basic value corresponding to an amount of fuel required for the engine; the basic value is corrected by a negative feed-back control on the basis of the output of an air-fuel ratio sensor so as to obtain a desired air-fuel ratio to thereby supply the fuel to the engine by controlling a fuel control valve. A fuel control device comprises a writing means for writing in a memory a value of negative feed-back correction or a value related thereto when the output of the intake air quantity sensor is in the vicinity of a representative point, a correcting means for correcting the basic value on the basis of data in the memory and a valve controlling means to close a control valve which controls feeding of vaporized fuel caught in a canister to the air intake system of the engine when the value of negative feed-back corection or the value related thereto is written in the memory.

REFERENCES:
patent: 4334186 (1982-06-01), Sasayawa et al.
patent: 4397283 (1983-08-01), Komaroff et al.
patent: 4741313 (1988-05-01), Shimomura
patent: 4751907 (1988-06-01), Yamamoto et al.
patent: 4766868 (1988-08-01), Shibata
patent: 4771753 (1988-09-01), Ohishi
patent: 4817573 (1984-04-01), Yamada et al.

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