Method of controlling air-fuel ratio in internal combustion engi

Details Method of controlling air-fuel ratio in internal combustion engi Method of controlling air-fuel ratio in internal combustion engi

1981-04-30

1983-10-25

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

123440, 123480, 123492, 123494, F02D 3300

Patent

active

044112327

ABSTRACT:
Method of controlling a control system for an air-fuel ratio of air-fuel mixture supplied to an internal combustion engine so that the proper air-fuel ratio is obtained over the whole operation range including a normal operation region and an accelerating operation mode independently of a decrease in oxygen contents at places of high altitudes. When the accelerating operation region is sensed, a proper power duty, corresponding to a negative pressure at that time, is read out from a data table stored in a read-only memory and added to a duty pulse signal which is then utilized for controlling a fuel supply actuator.

REFERENCES:
patent: 4086890 (1978-05-01), Minami et al.
patent: 4212065 (1980-07-01), Marchak et al.
patent: 4245605 (1981-01-01), Rice et al.
patent: 4285319 (1981-08-01), Hattori et al.
patent: 4349877 (1982-09-01), Oyama et al.

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