Deposit control in fuel injector nozzles
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0257385
(2001-04-20)
|
우선권정보 |
AU-0007081 (2000-04-20) |
국제출원번호 |
PCT//AU01/00459
(2002-12-19)
|
§371/§102 date |
20021219
(20021219)
|
국제공개번호 |
WO01//81757
(2001-11-01)
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발명자
/ 주소 |
- Carlisle, Hugh William
- Frew, Robert Walter
- Mills, John Richard
- Murdoch, Peter John
|
출원인 / 주소 |
- Orbital Engine Company (Australia) Pty Limited
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
9 |
초록
▼
An injector nozzle for a fuel injected internal combustion engine, said injector nozzle including a port (5) having a valve seat surface (15) and a valve member (3) having a seating surface (17), said valve member (3) being movable relative to the port (5) to respectively provide a nozzle passage (6
An injector nozzle for a fuel injected internal combustion engine, said injector nozzle including a port (5) having a valve seat surface (15) and a valve member (3) having a seating surface (17), said valve member (3) being movable relative to the port (5) to respectively provide a nozzle passage (6) between the valve seat surface (15) and the seating surface (15) for the delivery of fuel therethrough or sealed contact therebetween to prevent said delivery of fuel, the valve member (3) including an outer valve surface (18) located adjacent the seating surface and external to the port, wherein a sharp edge (25) is provided on the valve member (3) at the transition between the seating surface (17) and the outer valve surface (18) thereby for controlling the formation of deposits at or adjacent an exit of the nozzle passage (6).
대표청구항
▼
1. An injector nozzle for a fuel injected internal combustion engine, said injector nozzle including a port having a valve seat surface and valve member having a seating surface, said valve member being movable relative to the port to respectively provide a nozzle passage between the valve seat surf
1. An injector nozzle for a fuel injected internal combustion engine, said injector nozzle including a port having a valve seat surface and valve member having a seating surface, said valve member being movable relative to the port to respectively provide a nozzle passage between the valve seat surface and the seating surface for the delivery of fuel there-through or sealed contact there-between to prevent said delivery of fuel, the valve member including an outer valve surface located adjacent the seating surface and external to the port, wherein a sharp edge is provided on the valve member at the transition between the seating surface and the outer valve surface thereof, for controlling the formation of deposits at or adjacent an exit of the nozzle passage.2. An injector nozzle according to claim 1, wherein the sharp edge acts as a deposit breaking edge to thereby facilitate deposit removal from the injector nozzle.3. An injector nozzle according to claim 1, wherein the angle between the seating surface and the outer valve surface and the outer valve surface of the valve member at the sharp edge transition.4. An injector nozzle according to claim 1, wherein an acute angle is provided between the seating surface and the outer valve surface of the valve member at the sharp edge transition.5. An injector nozzle according to claim 1, wherein the port includes an outer port surface surrounding and located adjacent to the valve seat surface, and a sharp edge is provided at the transition between the valve seat surface and the outer port surface.6. An injector nozzle according to claim 5, wherein the angle between the valve seat surface and the outer port surface of the port at the sharp edge transition is at least substantially 90 degrees.7. An injector nozzle according to claim 5, wherein an acute angle is provided between the valve seat surface and the outer port surface of the port at the sharp edge transition.8. An injector nozzle according to claim 5, wherein the outer valve surface and the outer port surface are at least substantially located in an common plane when the valve member is seated in the port.9. An injector nozzle according to claim 5, wherein the outer valve surface and the outer port surface are located in at least substantially parallel planes when the valve member is seated in the port.10. An injector nozzle according to claim 5, wherein the angle between the outer valve surface and the outer port surface is less than 180 degrees.11. An injector nozzle according to claim 5, wherein the angle between the outer valve surface and the outer port surface is of the order of 90 degrees.12. An injector nozzle according to claim 5, wherein the angles between each of the outer valve surface and the outer port surface and a fuel exit trajectory of the fuel exiting the nozzle passage.13. An injector nozzle according to claim 5, wherein the angles between each of the outer valve surface and the outer port surface and a fuel exit trajectory are arranged to be greater than 90 degrees.14. An injector nozzle according to claim 1, the nozzle being of the outwardly opening poppet valve type.15. An injector nozzle according to claim 1, the nozzle being arranged to deliver fuel directly into at least one combustion chamber of the engine.16. An injector nozzle according to claim 5, wherein the sharp edge on the valve member is formed in a separate step to the sharp edge on the port.17. An injector nozzle according to claim 1, wherein a projection is arranged beyond the extremity of the nozzle for controlling the shape of the fuel spray issuing from the nozzle.18. An injector nozzle according to claim 5, wherein the sharp edges on the valve member and on the port facilitates the maintenance of an optimal nozzle exit spray geometry thereby preventing over expansion of the fuel spray at the exit of the nozzle passage.19. An injector nozzle for a spark-ignited fuel injected internal combustion engine operated in stratified charge mode, said injector nozzle including a port having a valve seat surface and valve member having a seating surface, said valve member being movable relative to the port to respectively provide a nozzle passage between the valve seat surface and the seating surface for the delivery of fuel therethrough or sealed contact therebetween to prevent said delivery of fuel, the valve member including an outer valve surface located adjacent the seating surface and external to the port, wherein a sharp edge is provided on the valve member at the transition between the seating surface and the outer valve surface thereof, for controlling the formation of deposits at or adjacent an exit of the nozzle passage.
이 특허에 인용된 특허 (9)
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Stutzenberger Heinz (Vaihingen/Enz DEX), Fuel injection nozzle for internal combustion engines.
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Kobayashi Mitsuaki,JPX ; Yoshizu Fumitsugu,JPX, Fuel injection valve for enhancing penetration spray of injected fuel in an internal combustion engine.
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Davis Robert Max (Dunsborough AUX) Dasilva Jorge Manuel Pereira (North Beach AUX), Fuel injector nozzles.
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Potz Detlev (Stuttgart DEX) Lewentz Guenter (Hemmingen DEX) Gordon Uwe (Markgrningen DEX), Injection nozzle for internal combustion engines.
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Sczomak David P. (Troy MI), Poppet covered orifice fuel injection nozzle.
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Schoell Harry, Rotary fuel pump and combination fuel injector/spark plug.
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Feuling James J. (4035 N. Ventura Ave. Ventura CA 93001), Values for improved fluid flow therearound.
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Caley David J. (Sorrento AUX), Valve member for fuel injection nozzles.
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Alt Norbert,DEX ; Blaich Michael,DEX ; Guerich Guenter,DEX ; Schmuecker Karl-Joachim,DEX, Valve nozzle.
이 특허를 인용한 특허 (4)
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Meyer, Andrew E, Electronically controlled fuel injector with fuel flow rate substantially independent of fuel inlet pressure.
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Meyer, Andrew E., Fuel injector having a body with asymmetric spray-shaping surface.
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Lippert,Andreas M.; Drake,Michael C.; Zeng,Yangbing, Method and apparatus for a spark-ignited direct injection engine.
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Shafer, Scott F.; Moore, Bryan, Valve with thin-film coating.
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