Internal combustion engine fuel control system

Details Internal combustion engine fuel control system Internal combustion engine fuel control system

1978-06-12

1980-05-27

Gruber, Felix D.

Boots, shoes, and leggings

60276, 60285, 123 32EE, 123119EC, F02D 3500, F02B 7510

Patent

active

042053781

ABSTRACT:
An internal combustion engine fuel ignition system has feedback from an exhaust gas composition transducer which operates effectively only at normal exhaust temperatures, the transducer having a very high impedance at low temperatures. The feedback circuit includes a comparator stage and an integrator stage integrating the output of the comparator stage which compares the transducer output with a reference voltage. A feedback resistor is connected from the integrator stage output to the comparator stage input, so that, at low temperature the integrator stage output stabilises at a predetermined level. Only when the transducer warms up so that its impedance becomes significantly less than that of the feedback resistor does the exhaust feedback control loop become effective.

REFERENCES:
patent: 3569739 (1971-03-01), Stolman
patent: 3816760 (1974-06-01), Slawson et al.
patent: 3866063 (1975-02-01), Long
patent: 4112893 (1978-09-01), Anzai
patent: 4121554 (1978-10-01), Sueishi et al.
patent: 4122811 (1978-10-01), Bowler et al.
patent: 4132193 (1979-01-01), Takase et al.
patent: 4132200 (1979-01-01), Asano et al.
patent: 4153023 (1979-05-01), Asano et al.

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