Method and apparatus for dosing a gaseous fuel

Details Method and apparatus for dosing a gaseous fuel Method and apparatus for dosing a gaseous fuel

1996-09-20

1998-09-08

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Gaseous fuel and air mixer

123472, F02D 4100, F02M 2102

Patent

active

058030573

ABSTRACT:
A method and apparatus for supplying a gaseous fuel to a combustion engine is described. A required fuel flow is calculated, an actual fuel flow is measured, and a fuel flow control signal is adapted if a difference between the required and actual fuel flow is detected. The fuel flow may be measured using a differential pressure measurement. The fuel flow control signal and associated actual fuel flow may be stored in a continuously updated memory. The apparatus includes a pulse width modulation valve arranged in a fuel line, a fuel flow measurement assembly arranged downstream of the valve, and a device for generating a control signal for the valve. The control signal generating device is supplied with feedback from the flow measurement assembly and includes a continuously updated table for storing control signals and associated fuel flows.

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Wearden, "Systems Concepts for Engine Management", Automotive Engineer, vol. 19, No. 4, Aug. 1984, p. 80-82.
De Filippis, "Elektronische Analoge Operatoren: Een Vierkantsworteltrkker", Polytechnisch Tijdschrift, vol. 125, No. 6, Mar. 1, 1970, pp. 222-231.
Angerhofer, "Cryogenic Instrumentation", Control Engineering, vol. 112, No. 11, Nov. 1, 1965, p. 77.

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