Fuel system
First Claim
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1. A fuel system for a dual fuel power source, comprising:
- a first fuel circuit fluidly connected to the power source;
a second fuel circuit separate from the first fuel circuit and fluidly connected to the power source; and
a pressure regulator fluidly connected to the first fuel circuit, the pressure regulator configured to vent a first fuel from the first fuel circuit to an aftertreatment system fluidly connected to the power source in response to a pressure difference between the first and second fuel circuits being less than or equal to a pressure difference threshold.
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Abstract
A fuel system for a dual fuel power source includes a first fuel circuit fluidly connected to the power source, a second fuel circuit separate from the first fuel circuit and fluidly connected to the power source, and a pressure regulator fluidly connected to the first fuel circuit. The pressure regulator is configured to vent a first fuel from the first fuel circuit to an aftertreatment system fluidly connected to the power source in response to a pressure difference between the first and second fuel circuits being less than or equal to a pressure difference threshold.
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Citations
20 Claims
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1. A fuel system for a dual fuel power source, comprising:
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a first fuel circuit fluidly connected to the power source; a second fuel circuit separate from the first fuel circuit and fluidly connected to the power source; and a pressure regulator fluidly connected to the first fuel circuit, the pressure regulator configured to vent a first fuel from the first fuel circuit to an aftertreatment system fluidly connected to the power source in response to a pressure difference between the first and second fuel circuits being less than or equal to a pressure difference threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A fuel system for a dual fuel power source, comprising:
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a first fuel circuit configured to supply a first fuel to a pressure regulator fluidly connected to the power source; a second fuel circuit separate from the first fuel circuit, the second fuel circuit being configured to supply a second fuel, different than the first fuel, to the pressure regulator; and an injector fluidly connected to the pressure regulator, the injector being configured to inject the first and second fuels into a combustion chamber of the power source, wherein the pressure regulator is fluidly connected to an accumulator and configured to vent the first fuel, in gaseous form, to the accumulator in response to a pressure difference between the first and second fuel circuits being less than or equal to a pressure difference threshold. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of operating a fuel system associated with a dual fuel power source, comprising:
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directing a first fuel, in gaseous form, from a first fuel circuit to the power source; directing a second fuel, different than the first fuel, from a second fuel circuit to the power source for combustion with the first fuel; directing combustion exhaust from the power source through a particulate filter of an aftertreatment system fluidly connected to the power source; venting the first fuel from the first fuel circuit to the aftertreatment system in response to a pressure difference between the first and second fuel circuits being less than or equal to a pressure difference threshold; and combusting the vented first fuel in a regeneration device of the aftertreatment system to actively regenerate the particulate filter. - View Dependent Claims (19, 20)
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Specification