Dual fuel selector switch

Patent metadata

Field	Value
Publication number	US-11761390-B2
Application number	US-202217651245-A
Country	US
Kind code	B2
Filing date	Feb 16, 2022
Priority date	Nov 1, 2013
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A fuel selector for use with a dual fuel generator includes a selector plate, a first fuel valve assembly positioned adjacent the selector plate and actuatable between an ON position and an OFF position to selectively control a first fuel flow to an engine of the dual fuel generator, and a second fuel valve assembly positioned adjacent the selector plate and actuatable between an ON position and an OFF position to selectively control a second fuel flow to the engine of the dual fuel generator. A selector switch coupled to the selector plate is linearly translatable from a first position to a second position, so as to enable positioning of only one of the first fuel valve assembly and the second fuel valve assembly in the ON position at a given time, such that the first and second fuel valve assemblies cannot be in the ON position concurrently.

First claim

What is claimed is:

1. A fuel selector of a dual fuel generator comprising:
a selector switch having:
a first fuel mode configured to enable a first fuel flow from a first fuel source to an engine of the dual fuel generator; and
a second fuel mode configured to enable a second fuel flow from a second fuel source to the engine of the dual fuel generator;

a fuel solenoid having open and closed positions; and
a solenoid switch having a closed position to activate the fuel solenoid and an open position;
wherein, when the selector switch is in the first fuel mode, the fuel solenoid is in the closed position and, when the selector switch is in the second fuel mode, the solenoid switch is in the open position and the fuel solenoid is in the open position.

2. The fuel selector of claim 1 wherein the selector switch triggers the solenoid switch when changed from the second fuel mode to the first fuel mode, so as to cause the fuel solenoid to operate in the closed position.

3. The fuel selector of claim 1 further comprising:
a valve assembly fluidly connectable to each of the first fuel source and the second fuel source, the valve assembly being operable to selectively control the first fuel flow and the second fuel flow from the first fuel source and the second fuel source, respectively, to the engine of the dual fuel generator; and
wherein positioning of the selector switch in the first fuel mode and the second fuel mode enables a selection of one of the first fuel flow and the second fuel flow.

4. The fuel selector of claim 3 wherein the valve assembly is positioned on or adjacent the selector switch.

5. The fuel selector of claim 3 wherein the valve assembly comprises:
two fuel inputs, with a first fuel input connectable to the first fuel source and a second fuel input connectable to the second fuel source; and
two fuel outputs for selectively supplying fuel to the engine from the first fuel source or the second fuel source.

6. The fuel selector of claim 5 wherein the two fuel outputs selectively supply fuel to the engine from only the first fuel source or only the second fuel source, responsive to selection of the first fuel flow or the second fuel flow via the selector switch and to a corresponding operation of the valve assembly.

7. The fuel selector of claim 5 wherein the valve assembly comprises:
a first fuel valve having open and closed positions to selectively control the first fuel flow to the engine; and
a second fuel valve having open and closed positions to selectively control the second fuel flow to the engine.

8. The fuel selector of claim 3 wherein the first fuel source is a liquefied petroleum gas (LPG) fuel source and wherein the second fuel source is a gasoline fuel source.

9. The fuel selector of claim 1 wherein the fuel solenoid is a carburetor shutoff solenoid.

10. The fuel selector of claim 1 wherein, when the selector switch is in the first fuel mode, the solenoid switch is in the closed position.

11. A fuel selector for use with a dual fuel generator, the fuel selector comprising:
a valve assembly fluidly connectable to each of a first fuel source and a second fuel source, the valve assembly comprising a first selector switch operable to selectively control a first fuel flow and a second selector switch operable to selectively control a second fuel flow from the first fuel source and the second fuel source, respectively, to an engine of the dual fuel generator; and
an interlock positioned on or adjacent the valve assembly to prevent simultaneous operation of the first selector switch and the second selector switch.

12. The fuel selector of claim 11 wherein the valve assembly comprises two fuel outputs for selectively supplying fuel to the engine from the first fuel source or the second fuel source.

13. The fuel selector of claim 12 wherein the two fuel outputs selectively supply fuel to the engine from only the first fuel source or only the second fuel source, responsive to selection of the first fuel flow or the second fuel flow via the first and second selector switches and to a corresponding operation of the valve assembly.

14. The fuel selector of claim 11 wherein the valve assembly comprises:
a first fuel valve having open and closed positions to selectively control the first fuel flow to the engine; and
a second fuel valve having open and closed positions to selectively control the second fuel flow to the engine.

15. The fuel selector of claim 14 wherein the first fuel valve and the second fuel valve are non-solenoid, mechanical valves.

16. The fuel selector of claim 14 wherein the first and second selector switches provide for manual actuation of the first fuel valve and the second fuel valve, respectively, between the open and closed positions.

17. The fuel selector of claim 11 further comprising a carburetor solenoid switch configured to activate an associated carburetor solenoid when actuated.

18. The fuel selector of claim 17 wherein, when the interlock is in a first position, the interlock actuates the carburetor solenoid switch, so as to activate the carburetor solenoid and prohibit the second fuel flow to the engine.

19. The fuel selector of claim 18 wherein, when the interlock is in a second position, the carburetor solenoid allows the second fuel flow to the engine.

20. The fuel selector of claim 11 wherein the first fuel source is a liquefied petroleum gas (LPG) fuel source and wherein the second fuel source is a gasoline fuel source.

21. The fuel selector of claim 11 wherein, when the interlock prevents operation of the first selector switch, the valve assembly prevents the first fuel flow to the engine; and
wherein, when the interlock prevents operation of the second selector switch, the valve assembly prevents the second fuel flow to the engine.

Assignees

• Champion Power Equipment Inc

Inventors

• Sarder Mark J
• Jenison Leigh
• Schmit Ian

Classifications

• F02D19/0676 Primary

  Multi-way valves; Switch-over valves · CPC title

• F02D19/0647

  the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME] · CPC title

• F02D29/06

  peculiar to engines driving electric generators · CPC title

• F02M13/08

  Carburettors adapted to use liquid and gaseous fuels, e.g. alternatively · CPC title

• Y10T137/0318

  Processes · CPC title