Returnless fuel delivery mechanism with adaptive learning

Details Returnless fuel delivery mechanism with adaptive learning Returnless fuel delivery mechanism with adaptive learning

1995-03-31

1996-04-09

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

With fuel pump

F02M 3704

Patent

active

055051804

ABSTRACT:
An adapting mechanism for controlling the speed of a variable speed fuel pump in a returnless fuel delivery system includes a demand sensor, feedforward fuel pump values, adaptive adjustments corresponding to the feedforward values, a pump controller which controls the speed of the fuel pump, a timer, a steady demand indicator, a flow error accumulator, and an adjustor. The system chooses a feedforward value which corresponds to the engine's fuel demand and combines it with the corresponding adaptive adjustment to drive the fuel pump. The system monitors the average flow error over a time interval throughout which the fuel demand is substantially steady and modifies the adaptive adjustments to reduce any error offsets beyond a predetermined acceptable level.

REFERENCES:
patent: 4982331 (1991-01-01), Miyazaki
patent: 4993391 (1991-02-01), Kuribara et al.
patent: 5092302 (1992-03-01), Mohan
patent: 5207199 (1993-05-01), Sekiguchi
patent: 5237975 (1993-08-01), Betki et al.
patent: 5379741 (1995-01-01), Matysiewicz et al.
patent: 5444627 (1995-08-01), Sandborg et al.

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