Vehicle air-fuel controller having hot restart air/fuel ratio ad

Details Vehicle air-fuel controller having hot restart air/fuel ratio ad Vehicle air-fuel controller having hot restart air/fuel ratio ad

1979-08-13

1980-09-30

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123179G, F02N 1708

Patent

active

042249139

ABSTRACT:
An air/fuel ratio controller for an engine determines a hot restart condition by comparing the prior engine shutdown temperature with a predetermined constant and with the engine startup temperature. If the prior engine shutdown temperature exceeds the predetermined constant and the difference between the engine shutdown temperature and the engine startup temperature is within a predetermined value, a hot restart condition is indicated and the open loop air/fuel ratio otherwise determined in accord with engine operating parameters is adjusted to provide for improved hot restart engine performance.

REFERENCES:
patent: 3705571 (1972-12-01), Horn et al.
patent: 3923031 (1975-12-01), Keranen
patent: 4027641 (1977-06-01), Moder
patent: 4043310 (1977-08-01), Ichimiya et al.
patent: 4094292 (1978-06-01), Takagi et al.
patent: 4114570 (1978-09-01), Marchak et al.
patent: 4157699 (1979-06-01), Mori

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