Method and device for atmospheric pressure-dependent correction

Details Method and device for atmospheric pressure-dependent correction Method and device for atmospheric pressure-dependent correction

1982-09-27

1984-11-13

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Fuel injection system

123440, 123489, 123488, F02B 300

Patent

active

044819293

ABSTRACT:
A method comprising correcting the air/fuel ratio of a mixture being supplied to an internal combustion engine, by the use of a correction coefficient determined as a function of detected values of atmospheric absolute pressure and intake pipe absolute pressure. A device is also provided, which includes means for arithmetically calculating the correction coefficient as a function of outputs of sensors for sensing the two kinds of absolute pressure or means storing predetermined values of the correction coefficient for selective reading as a function of the sensor outputs, and means for correcting the valve opening period of a fuel injection valve by the calculated or read coefficient value.

REFERENCES:
patent: 3651791 (1972-03-01), Kobayashi
patent: 4131088 (1978-12-01), Reddy
patent: 4376431 (1983-03-01), Yokooku
patent: 4411232 (1983-10-01), Atago

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