[특허]Variable fuel delivery system and method

Hewlett-Packard Development Company, L.P.

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Variable fuel delivery system and method

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-043/00
미국특허분류(USC)	123/304; 123/575
출원번호	US-0284880 (2002-10-31)
발명자 / 주소	Koegler, John M. Da Cunha, John Coulman, Donald J.
출원인 / 주소	Hewlett-Packard Development Company, L.P.
인용정보	피인용 횟수 : 45 인용 특허 : 11

초록
▼

An improved fuel injector is disclosed. In one embodiment of the invention, the fuel injector includes a first fluid input for receiving a first fluid; a second fluid input for receiving a second fluid; and a drop ejector configured to discretely eject fluid in a digital manner, wherein the drop ejector is further configured to receive the first and second fluids and to eject discrete droplets of the first fluid and discrete droplets of the second fluid. In another embodiment of the invention, the fuel injector includes a drop ejector configured to discretely eject fluid in a digital manner, wherein the drop ejector includes a first set of firing chambers and a second set of firing chambers, wherein each firing chamber of the first set has a first volume, and wherein each firing chamber of the second set has a second volume.

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1. A fuel injector, comprising:a first fluid input for receiving a first fluid;a second fluid input for receiving a second fluid; anda drop ejector configured to eject a variably determined number of discrete droplets of fluid, wherein said drop ejector is further configured to receive said first and second fluids and to eject discrete droplets of said first fluid and discrete droplets of said second fluid. 2. The fuel injector of claim 1, wherein at least one of said first liquid and said second liquid is a combustible fuel. 3. The fuel injector of claim 1, wherein said drop ejector is further configured to eject said discrete droplets of said first fluid and said discrete droplets of said second fluid substantially simultaneously. 4. The fuel injector of claim 1, wherein said drop ejector further comprises a first fluid feed channel and a second fluid feed channel, said first fluid feed channel being configured to receive said first fluid and said second fluid feed channel being configured to receive said second fluid. 5. The fuel injector of claim 1, wherein said drop ejector further comprises a first plurality of firing chambers and a second plurality of firing chambers, wherein said first plurality of firing chambers are configured to receive said first fluid and said second plurality of firing chambers are configured to receive said second fluid. 6. The fuel injector of claim 5, wherein said first plurality of firing chambers includes a first set of firing chambers wherein each firing chamber in said first set has a first volume, and wherein said first plurality of firing chambers further includes a second set of firing chambers wherein each firing chamber in said second set has a second volume. 7. The fuel injector of claim 1, further comprising a control circuit configured to selectively adjust a volume ratio of said first fluid ejected from said drop ejector relative to said second fluid ejected from said drop ejector. 8. The fuel injector of claim 1, further comprising an air flow control valve configured to selectively allow air to pass through said ejected fluid droplets so as to create a vaporized mixture from said first and second fluids. 9. A fuel injector, comprising:a drop ejector configured to eject a variably determined number of discrete droplets of fluid; andwherein said drop ejector includes a first set of firing chambers and a second set of firing chambers, wherein each firing chamber of said first set has a first volume, and wherein each firing chamber of said second set has a second volume. 10. The fuel injector of claim 8, further comprising a control circuit configured to selectively activate said first set of firing chambers and said second set of firing chambers. 11. The fuel injector of claim 9, wherein said control circuit is configured to deactivate said second set of firing chambers when said first set of firing chambers is activated and to deactivate said first set of firing chambers when said second set of firing chambers is activated. 12. The fuel injector of claim 9,wherein said first volume is smaller than said second volume; andwherein said first set of firing chambers is activated during a cold start of an internal combustion engine and said second set of firing chambers is activated during operation of said engine at a normal operation temperature. 13. The fuel injector of claim 12, wherein each firing chamber of said first set is configured to eject a fluid droplet having a diameter less than 30 microns. 14. A method of delivering fluid to a combustion chamber of an internal combustion engine, comprising:ejecting a variably determined number of discrete droplets of a first fluid from a drop ejector;ejecting a variably determined number of discrete droplets of a second fluid from said drop ejector; andvaporizing and mixing said discrete droplets of said first and second fluids. 15. The method of claim 14, wherein said vaporizing step comprises passing an air stream through said discret e droplets of said first and second fluids. 16. The method of claim 14, wherein at least one of said first and second fluids comprises a combustible fuel. 17. The method of claim 14, wherein said step of ejecting discrete droplets of a first fluid comprises selectively ejecting discrete droplets of a first size during a first time period and selectively ejecting discrete droplets of a second size during a second time period. 18. The method of claim 17, wherein said first size is smaller than said second size, and wherein said droplets of said first size are ejected during a cold start of the engine, and wherein said droplets of said second size are ejected during operation of the engine at a normal operating temperature. 19. The method of claim 18, wherein said first size comprises a diameter of less than 30 microns. 20. A method of delivering fuel to a combustion chamber of an internal combustion engine, comprising:selectively ejecting a variably determined number of discrete fuel droplets of a first size from a drop ejector;selectively ejecting a variably determined number of discrete fuel droplets of a second size from a drop ejector; andvaporizing said ejected fuel droplets. 21. The method of claim 20, wherein said fuel droplets of said first size are ejected during a first time period, and said fuel droplets of said second size are ejected during a second time period. 22. The method of claim 21, wherein said first size is smaller than said second size, and wherein said droplets of said first size are ejected during a cold start of the engine, and wherein said droplets of said second size are ejected during operation of the engine at a normal operating temperature. 23. The method of claim 22, wherein said first size comprises a diameter of less than 30 microns. 24. A fuel consumption device, comprising:an internal combustion engine;a fuel delivery system coupled to said engine; andwherein said fuel delivery system includes means for delivering a variably determined number of discrete droplets of a first combustible fuel and a variably determined number of discrete droplets of a second fluid substantially simultaneously. 25. The fuel consumption device of claim 24, wherein said second fluid is a combustible fuel. 26. The fuel consumption device of claim 24, wherein said fuel delivery system further includes a means for vaporizing and mixing said discrete droplets of said first combustible fuel and said discrete droplets of said second fluid. 27. A fuel consumption device, comprising:an internal combustion engine;a fuel delivery system coupled to said engine; andwherein said fuel delivery system includes means for selectively delivering a variably determined number of discrete fuel droplets of at least a first size and a second size.

이 특허에 인용된 특허 (11)

이 특허를 인용한 특허 피인용횟수: 45

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특허 상세정보

Variable fuel delivery system and method

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Variable fuel delivery system and method

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