[특허]Apparatus, systems, and methods to address evaporative cooling and wet compression for engine thermal management

Apparatus, systems, and methods to address evaporative cooling and wet compression for engine thermal management 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-025/028 F02B-047/02 F01B-001/12 F02B-047/08 F02D-041/00 F02M-025/07 F02M-027/04 F02M-027/08 F02M-025/022 F02M-035/08 F02B-029/04 F02B-001/12
출원번호	US-0081444 (2013-11-15)
등록번호	US-9145826 (2015-09-29)
발명자 / 주소	Pendray, John R.
출원인 / 주소	CUMMINS POWER GENERATION IP, INC.
대리인 / 주소	Foley & Lardner LLP
인용정보	피인용 횟수 : 0 인용 특허 : 46

초록 ▼

An apparatus including a reciprocating internal combustion engine with at least one piston and cylinder set and an intake stream; at least one liquid atomizer in fluid communication with the intake stream operable to provide a plurality of liquid droplets with a diameter less than 5 μm to the intake stream; and a controller where the controller is able to adjust an index of compression for the engine by: calculating a wet compression level in response to an engine operating limit and adjusting the at least one liquid atomizer in response to the wet compression level.

대표청구항 ▼

1. An apparatus comprising: an internal combustion engine with at least one piston and at least one cylinder and an intake stream;one or more liquid atomizers in fluid communication with the intake stream structured to provide a plurality of liquid droplets with a mean diameter less than 10 μm to the intake stream, wherein the liquid droplets comprise a solution that includes water and fuel;a controller structured to calculate an amount of the plurality of liquid droplets in response to an engine operating limit, the amount of the plurality of liquid droplets configured to fully vaporize during a compression stroke of the engine, the fully vaporizing configured to provide a transition from a wet compression state to a dry compression state during the compression stroke within the at least one cylinder; andwherein the one or more liquid atomizers are responsive to the controller to provide the calculated amount of the plurality of liquid droplets. 2. The apparatus of claim 1, further including at least one liquid droplet separator in fluid communication with the intake stream positioned downstream from the at least one of the liquid atomizers and upstream from the engine. 3. The apparatus of claim 1, wherein the fuel comprises ethanol. 4. The apparatus of claim 1, wherein the one or more liquid atomizers include means for providing the plurality of liquid droplets with the maximum diameter of less than 5 μm. 5. The apparatus of claim 1, further comprising: means for selecting a liquid injection location;means for selecting a liquid injection amount; andmeans for selecting a liquid injection timing. 6. The apparatus of claim 1, further comprising: a closed water source in fluid communication with at least one of the liquid atomizers. 7. The apparatus of claim 1, wherein the engine operating limit includes a pre-ignition temperature threshold and further comprising means for determining the pre-ignition temperature threshold as a function of one or more engine knock detector readings. 8. The apparatus of claim 1, further comprising: a plurality of liquid droplet injectors, a plurality of liquid droplet separators and a plurality of piston and cylinder sets; wherein the liquid droplet injectors and the liquid droplet separators are provided for each of the plurality of piston and cylinder sets; and wherein each of the plurality of liquid droplet injectors and each of the plurality of liquid droplet separators are in close proximity to each of the plurality of piston and cylinder sets. 9. The apparatus of claim 1, wherein the controller is structured to determine the engine operating limit in response to a set of auto-ignition conditions and to calculate the wet compression level based on a set of engine cycle conditions changing with an engine cycle. 10. The apparatus of claim 1, wherein the at least one of the liquid atomizers includes means for providing at least one of: ultrasonic atomization, electrostatic atomization, and flash atomization. 11. A method comprising: operating a reciprocating internal combustion engine with at least one piston and cylinder set and an air intake stream;generating a plurality of liquid droplets having a mean diameter less than 10 μm, wherein the liquid droplets comprise a solution that includes water and fuel;providing the plurality of liquid droplets to the air intake stream of the engine; andcontrolling an amount of the plurality of liquid droplets provided to the intake stream, the amount of the plurality of liquid droplets configured to fully vaporize during a compression stroke of the engine, the fully vaporizing configured to provide a transition from a wet compression state to a dry compression state during the compression stroke within the at least one piston and cylinder set, the amount of liquid droplets controlled by selecting at least one of:a liquid injection amount; anda liquid injection timing. 12. The method of claim 11, wherein providing the plurality of liquid droplets in the air intake stream to the engine includes injecting the plurality of liquid droplets into the air intake stream according to a liquid droplet injector sequence. 13. The method of claim 11, wherein a majority of the liquid droplets has maximum diameter of less than 5 μm. 14. The method of claim 11, wherein a majority of the liquid droplets has a maximum diameter of less than 2.7 μm. 15. The method of claim 11, wherein the fuel comprises ethanol. 16. The method of claim 11, further comprising: atomizing liquid to provide the plurality of liquid droplets. 17. The method of claim 16, wherein the atomizing of the liquid includes at least one of: ultrasonic atomization, electrostatic atomization, and flash atomization. 18. The method of claim 11, further comprising: separating the plurality of liquid droplets from larger liquid droplets. 19. The method of claim 11, wherein the controlling is performed as a function of one or more engine operating conditions and includes regulating a wet compression level. 20. The method of claim 19, wherein the wet compression level corresponds to an amount of liquid determined to fully vaporize throughout compression of the intake stream in the at least one piston and cylinder set. 21. An apparatus comprising: an internal combustion engine with at least one reciprocating piston and at least one cylinder and an intake stream;means for atomizing a coolant in fluid communication with the intake stream operable to provide a plurality of coolant particles with a maximum diameter less than 30 μm to the intake stream, wherein the coolant particles comprise a mixture that includes water and fuel;a controller configured to adjust an index of compression for the engine by:determining a knock level of the engine;calculating a wet compression level in response to the knock level of the engine exceeding a knock threshold; andadjusting a coolant atomization control schedule for the at least one atomizer means in response to the wet compression level. 22. The apparatus of claim 21, wherein the controller is further configured to determine an injection amount of coolant particles when the injection amount of coolant particles are provided on a continuous basis; and determine a duration for providing the injection amount of coolant particles when the means for atomizing a coolant is capable of providing the injection amount of coolant particles to the intake stream. 23. The apparatus of claim 21, wherein the at least one reciprocating piston and cylinder at least partially include an insulating material. 24. The apparatus of claim 21, wherein the fuel comprises ethanol. 25. The apparatus of claim 21, wherein the wet compression level corresponds to an amount of liquid determined to fully vaporize throughout compression of the intake stream in the at least one cylinder.

이 특허에 인용된 특허 (46)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Apparatus, systems, and methods to address evaporative cooling and wet compression for engine thermal management 원문보기

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Apparatus, systems, and methods to address evaporative cooling and wet compression for engine thermal management 원문보기

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