Method and apparatus for controlling the amount of fuel metered

Details Method and apparatus for controlling the amount of fuel metered Method and apparatus for controlling the amount of fuel metered

1976-06-14

1978-05-02

Feinberg, Samuel

Internal-combustion engines

Noncompression

364442, F02B 300

Patent

active

040868842

ABSTRACT:
Method and apparatus for controlling the amount of fuel metered to an internal combustion engine through electrically-controllable valve means, such as electromagnetic fuel injectors. The valve means delivers the fuel to the engine in a quantity that varies as a function of an electrical signal representing the mathematical product obtained by multiplying a binary number electrical signal by an electrical signal representing a condition of the engine. The binary number electrical signal is a coefficient of the engine-condition electrical signal and is calculated, by a programmed digital computer, from a function or functions describing a desired relationship between the coefficent value and various electrical signals representing variable conditions of engine operation. The binary number electrical signal is repetitively recalculated by the digital computer. However, the product electrical signal is generated continuously or at a rate greater than the rate at which the repetitive calculation of the binary number electrical signal takes place. Consequently, with respect to variations in the engine-condition electrical signal, the product electrical signal used to determine the amount of fuel metered to the engine is up-dated continuously or at a rate greater than that at which the digital computer updates the binary number electrical signal.

REFERENCES:
patent: 3991727 (1976-11-01), Kawai et al.

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