Method and apparatus for controlling fuel management for an inte

Details Method and apparatus for controlling fuel management for an inte Method and apparatus for controlling fuel management for an inte

1978-04-12

1981-01-13

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123479, 123489, F02D 500, F02M 700

Patent

active

042443407

ABSTRACT:
A control circuit of a fuel management control system for internal combustion engines monitors the operation of an exhaust line sensor. When the oxygen sensor is perceived to be inoperative, for example, due to low ambient temperature, the previously closed loop control process governing the fuel management control signals is interrupted and a direct forward control process is substituted therefor. The reference voltage is changed during this time for eventual adaptation to the changeover to closed loop feedback control after the oxygen sensor again becomes operational.

REFERENCES:
patent: 3890946 (1975-06-01), Wahl
patent: 3903853 (1975-09-01), Kizler et al.
patent: 3916170 (1975-10-01), Norimatsu et al.
patent: 3916848 (1975-11-01), Schmidt
patent: 3926154 (1975-12-01), Williams
patent: 3938075 (1976-02-01), Reddy
patent: 3938479 (1976-02-01), Oberstadt
patent: 3948228 (1976-04-01), Luchaco
patent: 3977375 (1976-08-01), Laprade et al.
patent: 4167396 (1979-09-01), Kondo et al.

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