Multi-gaseous fuel control device for a combustion engine...

Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer

Reexamination Certificate

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Details

C048S180100, C123S575000, C123S463000, C123S515000

Reexamination Certificate

active

07395818

ABSTRACT:
A fuel control device for a combustion engine capable of running on any one of a plurality of fuels has a fuel selection module with a plurality of fuel type settings for selecting a specific fuel type whereupon the fuel control device controls the outlet pressure of the chosen fuel to a desired fuel pressure corresponding to the calorific properties of the chosen fuel. The fuel selection module preferably operates a plurality of fuel flow circuits each designated for a specific fuel type, and each having a biased closed inlet valve and a biased closed outlet valve. Located preferably between each inlet and outlet valve is a pressure regulator designated for the specific fuel type and controlling the outlet fuel pressure. The device preferably includes a fuel metering apparatus and a shutoff valve that communicate with, and control in part, fuel flow through the fuel flow circuits.

REFERENCES:
patent: 2664872 (1954-01-01), Ericson et al.
patent: 4306532 (1981-12-01), Camacho
patent: 4370969 (1983-02-01), Zarrelli et al.
patent: 4492207 (1985-01-01), Hallberg
patent: 4594201 (1986-06-01), Phillips et al.
patent: 6035837 (2000-03-01), Cohen et al.
patent: 5-9632 (1993-02-01), None

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