Air-fuel ratio controlling method and apparatus therefor

Details Air-fuel ratio controlling method and apparatus therefor Air-fuel ratio controlling method and apparatus therefor

1980-06-11

1982-09-07

Gruber, Felix D.

Boots, shoes, and leggings

123440, 123480, 123489, 36443105, G06F 1520, F02D 500, F02B 312

Patent

active

043487289

ABSTRACT:
The air-fuel ratio of a mixture to be supplied to an engine is corrected by a microcomputer in accordance with integrated data produced by the process of integration performed in response to the output signal of an air-fuel ratio sensor for sensing the composition of exhaust gases from the engine and engine condition correction data corresponding to the then existing engine operating conditions. The necessary engine condition correction data are stored in the form of a map in a nonvolatile memory in accordance with the engine operating conditions as parameters. If, for example, any abnormal condition such as an abnormal rise in the temperature of a catalytic converter occurs, all the engine condition correction data in the nonvolatile memory are reset to a predetermined value.

REFERENCES:
patent: 4200064 (1980-04-01), Engele
patent: 4201161 (1980-05-01), Sasayama et al.
patent: 4214306 (1980-07-01), Kobayashi
patent: 4224910 (1980-09-01), O'Brien
patent: 4240390 (1980-12-01), Takeda
patent: 4257377 (1981-03-01), Kinugawa et al.
patent: 4265208 (1981-05-01), Emmert et al.
patent: 4270503 (1981-06-01), Pomerantz

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