Fuel management system and method
First Claim
Patent Images
1. A system comprising:
- an engine;
a fuel system operably coupled to the engine to provide a first fuel to the engine and a second fuel to the engine; and
at least one controller operable to control the engine and fuel system, wherein the at least one controller is configured to;
control the fuel system to concurrently supply the first fuel at a first flow volume and the second fuel at a second flow volume to the engine to define an initial fuel ratio;
change the first flow volume, the second flow volume, or both the first and second flow volumes to define a subsequent fuel ratio at which the first fuel and the second fuel are concurrently supplied to the engine in response to a change in a power demand on the engine or in a speed of the engine;
control the engine according to a trip plan; and
adjust at least one of the initial fuel ratio or the subsequent fuel ratio during movement of a vehicle that includes the engine and fuel system.
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Abstract
A system includes an engine and a controller. The engine is capable of multiple operating modes, and each mode has a relatively different fuel ratio such that as the engine is changed from a first operating mode having a first ratio of a first fuel to a second fuel to a second operating mode having a second ratio of the first fuel to the second fuel. The controller is operable to change the engine from one operating mode to another operating mode.
6 Citations
20 Claims
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1. A system comprising:
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an engine; a fuel system operably coupled to the engine to provide a first fuel to the engine and a second fuel to the engine; and at least one controller operable to control the engine and fuel system, wherein the at least one controller is configured to; control the fuel system to concurrently supply the first fuel at a first flow volume and the second fuel at a second flow volume to the engine to define an initial fuel ratio; change the first flow volume, the second flow volume, or both the first and second flow volumes to define a subsequent fuel ratio at which the first fuel and the second fuel are concurrently supplied to the engine in response to a change in a power demand on the engine or in a speed of the engine; control the engine according to a trip plan; and adjust at least one of the initial fuel ratio or the subsequent fuel ratio during movement of a vehicle that includes the engine and fuel system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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an engine; a fuel system operably coupled to the engine to provide a first fuel to the engine and a second fuel to the engine; and at least one controller operable to control the engine and fuel system, wherein the at least one controller is configured to; control the fuel system to concurrently supply the first fuel at a first flow volume and the second fuel at a second flow volume to the engine to define a first fuel ratio; change the first flow volume, the second flow volume, or both the first and second flow volumes to define a second fuel ratio at which the first fuel and the second fuel are concurrently supplied to the engine in response to a change in a power demand on the engine or in a speed of the engine; and adjust at least one of the first fuel ratio or the second fuel ratio during movement of a vehicle that includes the engine and fuel system. - View Dependent Claims (16, 17, 18, 19)
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20. A vehicle comprising:
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an engine; a fuel system operably coupled to the engine to provide a first fuel to the engine and a second fuel to the engine, wherein the fuel system is configured to receive the first fuel and the second fuel from respective tanks on board at least one of the vehicle or another vehicle of a vehicle consist that includes the vehicle and the another vehicle; at least one controller operable to control the engine and fuel system, wherein the at least one controller is configured to; control the fuel system to concurrently supply the first fuel at a first flow volume and the second fuel at a second flow volume to the engine to define a first fuel ratio; change the first flow volume, the second flow volume, or both the first and second flow volumes to define a second fuel ratio at which the first fuel and the second fuel are concurrently supplied to the engine in response to a change in a power demand on the engine or in a speed of the engine; control the engine according to a trip plan; and adjust at least one of the first fuel ratio or the second fuel ratio during movement of a vehicle that includes the engine and fuel system.
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Specification