Gaseous fuel system having a turbine pump
First Claim
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1. A fuel system for a machine, comprising:
- a pump having;
a body defining an inlet and an outlet;
a compressor section in fluid communication with the inlet;
a turbine section in fluid communication with the outlet; and
a conduit formed between an outlet of the compressor section and an inlet of the turbine section, the conduit comprising a converging-diverging nozzle;
a heat exchanger integral to the conduit;
a supply of a liquid fuel in communication with the inlet; and
an accumulator in communication with the outlet and configured to receive gaseous fuel.
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Abstract
A gaseous fuel system is provided for a machine. The fuel system may have a pump having a body defining an inlet and an outlet. The pump may also have a compressor section in fluid communication with the inlet, a turbine section in fluid communication with the outlet, and a conduit formed between an outlet of the compressor section and an inlet of the turbine section. The fuel system may further have a heat exchanger integral to the conduit, a supply of a liquid fuel in communication with the inlet, and an accumulator in communication with the outlet configured to receive gaseous fuel.
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Citations
20 Claims
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1. A fuel system for a machine, comprising:
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a pump having; a body defining an inlet and an outlet; a compressor section in fluid communication with the inlet; a turbine section in fluid communication with the outlet; and a conduit formed between an outlet of the compressor section and an inlet of the turbine section, the conduit comprising a converging-diverging nozzle; a heat exchanger integral to the conduit; a supply of a liquid fuel in communication with the inlet; and an accumulator in communication with the outlet and configured to receive gaseous fuel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating a fuel system that includes a pump having a compressor section, a turbine section, and a conduit, comprising:
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pressurizing liquid fuel within the compressor section; increasing the speed of the liquid fuel while maintaining the mass flow rate of the liquid fuel through passing the liquid fuel through a converging section of the conduit; passing the liquid fuel through a throat section of the conduit and heating the liquid fuel within the throat section of the conduit to vaporize the liquid fuel into gaseous fuel; allowing the gaseous fuel to expand within the turbine section to power the turbine section; driving the compressor section with the turbine section power; and directing the gaseous fuel to an engine. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A train consist, comprising:
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a tender car configured to hold a supply of liquid fuel; a locomotive having an engine; and a pump configured to draw liquid fuel from the liquid fuel supply and direct the liquid fuel to the engine; the pump having; a body defining an inlet in communication with the liquid fuel supply and an outlet in communication with the engine; a compressor section in fluid communication with the inlet; a turbine section in fluid communication with the outlet; a conduit formed between an outlet of the compressor section and an inlet of the turbine section, the conduit comprising a converging-diverging nozzle; and a heat exchanger integral to the conduit and configured to receive coolant from the engine to heat the liquid fuel in the conduit.
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Specification