Heat transfer systems for internal combustion engines and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60H-001/03
F02M-053/02
F02M-053/04
F02M-053/06
F02B-055/10
F02B-003/06
F02N-019/10
F01P-011/20
F01P-003/00
출원번호
US-0459843
(2014-08-14)
등록번호
US-9422902
(2016-08-23)
발명자
/ 주소
Kare, Jordin T.
Wood, Jr., Lowell L.
출원인 / 주소
ELWHA LLC
인용정보
피인용 횟수 :
0인용 특허 :
2
초록▼
A heat transfer system for use in an internal combustion engine and related methods are disclosed. The heat transfer system may be configured to absorb and transfer heat from a combustion chamber of an internal combustion engine. The heat transfer system may also be configured to reintroduce absorbe
A heat transfer system for use in an internal combustion engine and related methods are disclosed. The heat transfer system may be configured to absorb and transfer heat from a combustion chamber of an internal combustion engine. The heat transfer system may also be configured to reintroduce absorbed and/or transferred heat into the internal combustion engine via a fuel injector or another suitable device. Removal of the heat from the combustion chamber may reduce a quantity of work required or used for compression of a first combustion fluid, increase a charge density in the combustion chamber, and/or increase the compression ratio of the engine. Additionally, the heat transfer system may be designed such that it may be used to retrofit an existing internal combustion engine.
대표청구항▼
1. A spark-ignition internal combustion engine comprising: a combustion chamber; anda heat absorption element in communication with an interior volume of the combustion chamber, wherein the heat absorption element is configured to transition from a low-profile configuration to a deployed configurati
1. A spark-ignition internal combustion engine comprising: a combustion chamber; anda heat absorption element in communication with an interior volume of the combustion chamber, wherein the heat absorption element is configured to transition from a low-profile configuration to a deployed configuration for a first time period,wherein the heat absorption element is further configured to transition from the deployed configuration to the low-profile configuration for a second time period, andwherein the heat absorption element is configured to absorb at least a portion of an amount of heat generated by work done on a first combustion fluid disposed in the interior volume of the combustion chamber. 2. The engine of claim 1, wherein the heat absorption element is further configured to transfer at least a portion of the absorbed heat to a first cooling fluid. 3. The engine of claim 2, wherein the first cooling fluid comprises a fuel, and wherein at least a portion of the heated fuel is introduced into the interior volume of the combustion chamber during at least a portion of a power stroke. 4. The engine of claim 1, wherein the heat absorption element is further configured to transfer at least a portion of the absorbed heat to a heat sink. 5. The engine of claim 4, wherein at least a portion of the absorbed heat is transferred to the heat sink via a first cooling fluid. 6. The engine of claim 4, wherein the heat sink comprises a fuel. 7. The engine of claim 5, wherein the heat absorption element comprises a plurality of channels configured for passage of the first cooling fluid. 8. The engine of claim 7, wherein the channels are microchannel heat transfer elements. 9. The engine of claim 2, wherein thermal conductance from the first combustion fluid to the first cooling fluid via the heat absorption element is configured to decrease during at least a portion of a power stroke. 10. A heat transfer system configured to be retrofitted into a spark-ignition internal combustion engine, the heat transfer system comprising: a heat absorption element configured to be disposed within and absorb heat from an interior volume of a combustion chamber; anda thermal transfer element in communication with the heat absorption element, the thermal transfer element configured to extend at least from a first position at or adjacent the heat absorption element to a second position outside of the combustion chamber, wherein the thermal transfer element comprises a fluid flow path configured to transfer heat from the heat absorption element to a heat sink, wherein a first cooling fluid flows intermittently through the fluid flow path between at least the heat absorption element and the heat sink, and wherein at least a portion of the first cooling fluid egresses from the heat absorption element during a power stroke. 11. The heat transfer system of claim 10, wherein the first cooling fluid is transferred between the heat absorption element and the heat sink by a pump. 12. The heat transfer system of claim 10, wherein the heat sink comprises a second cooling fluid. 13. The heat transfer system of claim 12, wherein the first cooling fluid is in thermal communication with the second cooling fluid. 14. The heat transfer system of claim 10, wherein the heat absorption element comprises a plurality of channels for passage of a first cooling fluid. 15. The heat transfer system of claim 14, wherein the channels are microchannel heat transfer elements. 16. The heat transfer system of claim 15, wherein the plurality of microchannel heat transfer elements is configured to deploy into at least a portion of the interior volume of the combustion chamber. 17. The heat transfer system of claim 10, wherein the heat absorption element is configured to absorb more heat during a first time period in comparison to a second time period. 18. The heat transfer system of claim 10, wherein the interior volume of the combustion chamber comprises a predetermined compression ratio, wherein the heat absorption element is configured to occupy a portion of the interior volume of the combustion chamber, and wherein the volume occupied by the heat absorption element alters the predetermined compression ratio. 19. The heat transfer system of claim 10, wherein the heat absorption element is configured for disposition through an existing aperture of the combustion chamber. 20. The heat transfer system of claim 10, wherein the heat absorption element comprises a spark plug element. 21. A spark-ignition internal combustion engine system comprising: one or more variable-volume combustion chambers; anda heat transfer system comprising one or more heat absorption elements, wherein each heat absorption element is in communication with an interior volume of at least one of the combustion chambers, wherein the one or more heat absorption elements are configured to absorb heat from the interior volume of the one or more combustion chambers, wherein the one or more heat absorption elements comprise a plurality of microchannels configured for passage of a first cooling fluid, and wherein the microchannels are channels having laminar flow at operating conditions and a height-to-width ratio of about 1 or greater. 22. The engine system of claim 21, wherein the interior volume of the one or more combustion chambers is configured to receive a volume of a first combustion fluid during at least a portion of an intake stroke, wherein the one or more combustion chambers are configured to compress the volume of the first combustion fluid during at least a portion of a compression stroke,wherein the heat transfer system is configured to absorb at least a portion of the heat from the first combustion fluid during at least a portion of the compression stroke, andwherein the heat transfer system is configured to transfer at least a portion of the absorbed heat from the first combustion fluid to a heat sink. 23. The engine system of claim 21, wherein the heat transfer system is configured to transfer a portion of heat generated by work done on a volume of a first combustion fluid disposed in the interior volume of the one or more combustion chambers to a heat sink. 24. The engine system of claim 21, wherein a volume of a first combustion fluid is disposed in the interior volume of the one or more combustion chambers, and wherein the one or more heat absorption elements are configured to transfer a portion of a total amount of heat from the first combustion fluid to a first cooling fluid during a compression stroke. 25. The engine system of claim 22, wherein the heat transfer system is configured to transfer a greater portion of the total amount of heat from the one or more combustion chambers during at least a portion of the compression stroke as compared to during at least a portion of a power stroke. 26. The engine system of claim 21, wherein the one or more heat absorption elements are configured to transition from a low-profile configuration to a deployed configuration for a first time period, and wherein the one or more heat absorption elements are further configured to transition from the deployed configuration to the low-profile configuration for a second time period. 27. A method of increasing a maximum charge density in a combustion chamber of an internal combustion engine, comprising: disposing a heat absorption element in communication within an interior volume of a combustion chamber;introducing a volume of a first combustion fluid into the interior volume of the combustion chamber;compressing the volume of the first combustion fluid;absorbing at least a portion of a total amount of heat generated by the compression of the first combustion fluid into the heat absorption element;igniting the first combustion fluid, wherein the heat absorption element is configured to comprise a greater heat absorption capacity during the compression of the first combustion fluid than during the ignition of the first combustion fluid; andintroducing at least a portion of the absorbed heat into the interior volume of the combustion chamber via a fuel injector during the ignition of the first combustion fluid. 28. The method of claim 27, further comprising: absorbing into the heat absorption element a portion of a total amount of heat generated by work done on the first combustion fluid.
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이 특허에 인용된 특허 (2)
Lindberg, John E., Combustion and pollution control system.
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