Dual fuel internal combustion engine system
AssigneeFca US LLC
InventorPrashant Ramchandra Khot
Life of this patent
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Abstract
A dual fuel internal combustion engine system includes a dual fuel engine, an air intake system configured to provide intake air to the dual fuel engine, a hydrocarbon (HC) fuel system configured to selectively provide HC fuel to the dual fuel engine for combustion therein, and a hydrogen (H2) fuel system configured to selectively provide H2 fuel to the dual fuel engine for combustion therein. A control system includes a controller having one or more processors configured to control the HC fuel system and the H2 fuel system, based on an operating condition of the dual fuel engine, to maximize fuel efficiency and minimize exhaust emissions.
Claims20
A dual fuel internal combustion engine system comprising:
- a dual fuel engine;
- an air intake system configured to provide intake air to the dual fuel engine;
- a hydrocarbon (HC) fuel system configured to selectively provide HC fuel to the dual fuel engine for combustion therein;
- a hydrogen (H2) fuel system configured to selectively provide H2 fuel to the dual fuel engine for combustion therein;
- and
- a control system including a controller having one or more processors configured to control the HC fuel system and the H2 fuel system, based on an operating condition of the dual fuel engine, to maximize fuel efficiency and minimize exhaust emissions, wherein the controller is programmed to:
- monitor an operating condition of the dual fuel engine;
- determine the dual fuel engine is operating in a high engine load condition;
- command a rich air-fuel ratio;
- and
- command a high H2 fuel to HC fuel ratio to minimize exhaust emissions.
A method of operating a dual fuel internal combustion engine system including a dual fuel engine, an air intake system, a hydrocarbon (HC) fuel system, and a hydrogen (H2) fuel system, the method comprising:
- monitoring, by a controller having one or more processors, an operating condition of the dual fuel engine;
- commanding, by the controller and based on the engine operating condition, an air-fuel ratio;
- and
- commanding, by the controller, the HC fuel system and the H2 fuel system to provide a H2 fuel to HC fuel ratio to maximize fuel efficiency and minimize exhaust emissions based on the engine operating condition,
- wherein when the controller determines the dual fuel engine is operating in a high engine load condition, the method further includes:
- commanding, by the controller, a rich air-fuel ratio;
- and
- commanding, by the controller, a high H2 fuel to HC fuel ratio to minimize exhaust emissions.
Dependencies are inferred from the claim text.