Batteryless dual fuel engine with liquid fuel cut-off
AssigneeChampion Power Equipment, Inc.
InventorsKendall J. Collie, Mark J. Sarder, Aleko D. Sotiriades, James J. Dehn, Leigh Jenison, Hiroaki Sato
Life of this patent
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Abstract
A dual fuel engine includes an engine operable on a gaseous fuel and a liquid fuel and a switch to change operation of the engine between gaseous fuel and liquid fuel. The dual fuel engine also includes a carburetor attached to an intake of the engine to mix air and fuel and connect to a gaseous fuel source and a liquid fuel source. A liquid fuel cut-off attaches to the carburetor to interrupt liquid fuel upon actuation of the switch from liquid fuel to gaseous fuel.
Claims64
A dual fuel engine comprising:
- an engine operable on a gaseous fuel and a liquid fuel;
- a switch to change operation of the engine between gaseous fuel and liquid fuel;
- a carburetor attached to an intake of the engine to mix air and fuel and connect to a gaseous fuel source and a liquid fuel source;
- a liquid fuel valve positioned along a liquid fuel line coupling the liquid fuel source to the carburetor;
- a gaseous fuel valve positioned along a gaseous fuel line coupling the gaseous fuel source to the carburetor;
- and
- a liquid fuel cut-off incorporated into the carburetor to interrupt liquid fuel upon actuation of the switch from liquid fuel to gaseous fuel.
A batteryless dual fuel generator comprising:
- a housing containing a pull start engine coupled to drive an alternator, the engine operable on a gaseous fuel and a liquid fuel;
- a carburetor attached to an intake of the engine comprising:
- a throat to mix fuel with air,
- a float bowl, and
- a fuel passage extending from the float bowl to the throat to provide liquid fuel;
- and
- a fuel shutoff attached to the carburetor to close the fuel passage upon selection of engine operation to gaseous fuel.
A carburetor having a fuel shutoff comprising:
- a carburetor comprising:
- a float bowl,
- a throat, and
- a fuel passage extending from the float bowl to the throat;
- and
- a fuel shutoff coupled to the carburetor having a first end in the carburetor that actuates to close the fuel passage and a second end external to the carburetor to actuate the first end;
- and
- wherein the fuel shutoff actuates free from linear motion.
A method of assembling a dual fuel engine comprising:
- providing an engine operable on a gaseous fuel and a liquid fuel;
- attaching a carburetor to an intake of the engine, the carburetor comprising:
- a throat to mix gaseous fuel with air and liquid fuel with air,
- a float bowl, and
- a fuel passage extending from the float bowl to the throat to provide liquid fuel;
- coupling a switch to the engine to change operation of the engine between gaseous fuel and liquid fuel;
- and
- attaching a liquid fuel cut-off to the carburetor to close the fuel passage upon actuation of the switch from liquid fuel to gaseous fuel.
Dependencies are inferred from the claim text.