Multi-pulse injection events for a dual-fuel engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01N-003/00
B01D-053/94
F02D-041/00
F02D-041/40
F02D-019/06
F02D-019/08
F02D-019/10
F01N-003/10
F02D-041/38
출원번호
US-0334632
(2016-10-26)
등록번호
US-10105650
(2018-10-23)
발명자
/ 주소
Lutz, Timothy P.
출원인 / 주소
CUMMINS INC.
대리인 / 주소
Faegre Baker Daniels LLP
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
A method includes supplying a first quantity of a first fuel to an engine and supplying a charge including a second fuel and air to the engine. The first fuel is different from the second fuel. The method further includes mixing the first fuel with the charge, supplying a second quantity of the firs
A method includes supplying a first quantity of a first fuel to an engine and supplying a charge including a second fuel and air to the engine. The first fuel is different from the second fuel. The method further includes mixing the first fuel with the charge, supplying a second quantity of the first fuel to the engine, and igniting at least a portion of the first and second fuels in response to supplying the second quantity of the first fuel.
대표청구항▼
1. A method of controlling at least one fuel injection event during a fuel cycle of an engine using a controller, comprising: supplying, using the controller, a first quantity of a first fuel to the engine;supplying, using the controller, a charge including a second fuel and air to the engine, the f
1. A method of controlling at least one fuel injection event during a fuel cycle of an engine using a controller, comprising: supplying, using the controller, a first quantity of a first fuel to the engine;supplying, using the controller, a charge including a second fuel and air to the engine, the first fuel being different from the second fuel;mixing the first fuel with the charge;supplying, using the controller, a second quantity of the first fuel to the engine after supplying the first quantity of the first fuel to the engine and before igniting at least a portion of the first and second fuels; andigniting at least the portion of the first and second fuels in response to supplying the second quantity of the first fuel. 2. The method of claim 1, wherein supplying the first quantity of the first fuel includes supplying diesel fuel and supplying the charge includes supplying natural gas. 3. The method of claim 1, wherein supplying the second quantity of the first fuel causes ignition of at least a portion of the first and second fuels. 4. The method of claim 1, wherein igniting at least a portion of the first and second fuels occurs after supplying the first quantity of the first fuel and mixing the first fuel with the charge. 5. The method of claim 1, further comprising evaporating the first quantity of the first fuel prior to igniting at least a portion of the first and second fuels. 6. The method of claim 4, wherein mixing the first fuel with the charge occurs after evaporating the first quantity of the first fuel. 7. The method of claim 1, further comprising igniting at least a portion of the first quantity of the first fuel before supplying the second quantity of the first fuel. 8. The method of claim 1, wherein the first quantity of the first fuel is less than the second quantity of the first fuel. 9. The method of claim 8, wherein the first quantity of the first fuel is less than half of the second quantity of the first fuel. 10. The method of claim 1, further comprising supplying a third quantity of the first fuel after igniting at least a portion of the first and second fuels. 11. A method of controlling at least one fuel injection event during a fuel cycle of an engine using a controller, comprising: supplying, using the controller, a first quantity of a liquid fuel to a cylinder;supplying, using the controller, a charge including a gaseous fuel and air to the cylinder;combusting at least a portion of the liquid and gaseous fuels in response to supplying the first quantity of the liquid fuel; andsupplying, using the controller, a second quantity of the liquid fuel after combusting at least a portion of the first quantity of liquid fuel and the gaseous fuel. 12. The method of claim 11, further comprising exhausting the second quantity of the liquid fuel from the cylinder and directing the second quantity of the liquid fuel to an after-treatment assembly. 13. The method of claim 12, further comprising reacting the second quantity of the liquid fuel with an oxidation catalyst of the after-treatment assembly. 14. The method of claim 13, further comprising increasing a temperature of the after-treatment assembly in response to reacting the second quantity of the liquid fuel. 15. The method of claim 14, further comprising oxidizing uncombusted hydrocarbons of the gaseous fuel exhausted from the cylinder and into the after-treatment assembly in response to increasing the temperature of the after-treatment assembly. 16. The method of claim 11, wherein supplying the first quantity of the liquid fuel includes supplying diesel fuel and supplying the charge includes supplying natural gas. 17. The method of claim 11, wherein combusting at least a portion of the liquid and gaseous fuels occurs when supplying the first quantity of the liquid fuel. 18. The method of claim 11, further comprising combusting the first quantity of the liquid fuel before supplying the second quantity of the liquid fuel. 19. A fuel assembly, comprising: a control system configured to control at least one fuel injection event during a fuel cycle of an engine;a first fuel control member operably coupled to the control system to release a first fuel to mix with air; anda second fuel control member operably coupled to the control system to release a first quantity of a second fuel during a pre-combustion portion of the fuel cycle to mix with the first fuel and a second quantity of the second fuel during a combustion portion of the fuel cycle. 20. The fuel assembly of claim 19, wherein the first fuel is a gaseous fuel and the second fuel is a liquid fuel. 21. The fuel assembly of claim 19, wherein the first quantity of the second fuel is less than the second quantity of the second fuel. 22. The fuel assembly of claim 19, wherein the control system is configured to release a third quantity of the second fuel during a post-combustion portion of the fuel cycle. 23. The fuel assembly of claim 19, wherein the control system is configured to release the first fuel during the intake stroke of a piston. 24. The fuel assembly of claim 19, wherein the second quantity of the second fuel initiates combustion of the first and second quantities of the second fuel during a compression stroke of a piston.
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