IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0563577
(2012-07-31)
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등록번호 |
US-8635977
(2014-01-28)
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발명자
/ 주소 |
- Pursifull, Ross Dykstra
- Surnilla, Gopichandra
- Kerns, James Michael
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출원인 / 주소 |
- Ford Global Technologies, LLC
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
57 |
초록
▼
Systems and methods are provided for selectively storing gaseous reformate output by a fuel reformer for fueling an engine. Carbon monoxide produced by a fuel reformer may be continuously combusted in the engine and/or engine exhaust rather than being stored. In one example, reformate components pro
Systems and methods are provided for selectively storing gaseous reformate output by a fuel reformer for fueling an engine. Carbon monoxide produced by a fuel reformer may be continuously combusted in the engine and/or engine exhaust rather than being stored. In one example, reformate components produced by a fuel reformer, e.g., H2 and CH4, may be stored and buffered for use by an engine.
대표청구항
▼
1. A method for operating an engine, comprising: reforming a fuel into a gaseous fuel comprising H2, CO, and CH4; andselectively storing at least one of H2 and CH4 to a greater extent than CO, wherein selectively storing at least one of H2 and CH4 includes operating the engine by injecting at least
1. A method for operating an engine, comprising: reforming a fuel into a gaseous fuel comprising H2, CO, and CH4; andselectively storing at least one of H2 and CH4 to a greater extent than CO, wherein selectively storing at least one of H2 and CH4 includes operating the engine by injecting at least one of H2 and CH4 to a cylinder of the engine in response to an available amount of at least one of H2 and CH4, engine speed, and engine load, and storing an amount of at least one of H2 and CH4 not used by the engine. 2. The method of claim 1, further comprising separating the CO from the gaseous fuel and injecting the separated CO in the cylinder of the engine after it is separated from the gaseous fuel without storing the CO. 3. The method of claim 2, further comprising adjusting one or more engine operating conditions based on an amount of CO injected into the engine. 4. The method of claim 2, wherein adjusting the one or more engine operating conditions based on an amount of CO injected into the engine includes increasing at least one of spark timing and cylinder air charge in response to an increase in the amount of CO injected into the engine. 5. The method of claim 2, wherein the CO is separated from the gaseous fuel by a molecular sieve. 6. The method of claim 2, wherein the CO is separated from the gaseous fuel by pressure swing adsorption. 7. The method of claim 6, further comprising separating an amount of CO from the gaseous fuel and injecting the amount of CO in the cylinder of the engine continuously after it is separated and adjusting engine operating parameters based on the amount of CO injected in the cylinder, and delivering at least one of H2 and CH4 to the engine based on engine operating conditions and an amount of H2 and CH4 stored. 8. A method for operating an engine, comprising: reforming a fuel into a gaseous fuel comprising H2, CO, and CH4; and selectively storing at least one of H2 and CH4 to a greater extent than CO, wherein selectively storing at least one of H2 and CH4 includes in a first condition where an amount of stored H2 and CH4 is less than a threshold storing at least one of H2 and CH4, and in a second condition where an amount of stored H2 and CH4 is greater than a threshold not storing H2 or CH4 and delivering at least one of H2 and CH4 to the engine. 9. A method for operating an engine with a fuel reformer, comprising: operating the reformer to reform a fuel into a gaseous fuel comprising H2, CO, and CH4;separating the CO from the gaseous fuel;injecting the separated CO in a cylinder of the engine after it is separated from the gaseous fuel, wherein the CO is separated from the gaseous fuel by a molecular sieve. 10. The method of claim 9, further comprising adjusting one or more engine operating conditions based on an amount of CO injected into the engine. 11. The method of claim 9, wherein adjusting one or more engine operating conditions based on an amount of CO injected into the engine includes increasing at least one of spark timing and cylinder air charge in response to an increase in the amount of CO injected into the engine. 12. The method of claim 9, further comprising injecting the separated CO into an exhaust of the engine when the fuel reformer is deactivated. 13. The method of claim 12 further comprising running the engine lean in response to injecting separated CO in the engine, and delivering the remaining gaseous fuel to the engine, where the amount delivered is adjusted in response to engine knock. 14. The method of claim 9, further comprising using at least a portion of CO in a CO trap to keep a catalyst in the fuel reformer warm for a duration following an engine shutdown.
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