KR200226819Y1 - Direct Injection Fuel Injection Valves with Variable Spray Angle - Google Patents
Direct Injection Fuel Injection Valves with Variable Spray Angle Download PDFInfo
- Publication number
- KR200226819Y1 KR200226819Y1 KR2019970032512U KR19970032512U KR200226819Y1 KR 200226819 Y1 KR200226819 Y1 KR 200226819Y1 KR 2019970032512 U KR2019970032512 U KR 2019970032512U KR 19970032512 U KR19970032512 U KR 19970032512U KR 200226819 Y1 KR200226819 Y1 KR 200226819Y1
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- South Korea
- Prior art keywords
- injection
- valve
- fuel
- passage
- needle valve
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- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/047—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves being formed by deformable nozzle parts, e.g. flexible plates or discs with fuel discharge orifices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
본 고안은 직접 분사식 디젤연료분사밸브에 있어서, 연료분사밸브의 유두부 상하에 서로 다른 분무각을 갖는 분사공을 형성하고, 니들밸브의 끝단에 이를 각기 개폐할 수 있는 연료통로를 형성하여 니들밸브의 양정에 따라 연료분무각이 변화되게 한 가변분무각을 갖는 직접분사식 연료분사밸브에 관한 것으로,The present invention is a direct injection type diesel fuel injection valve, the injection hole having different spray angles above and below the nipple of the fuel injection valve, and the fuel passage for opening and closing each of the needle valve at the end of the needle valve by forming a needle valve It relates to a direct injection fuel injection valve having a variable spray angle to change the fuel spray angle according to the head of
밸브바디의 선단에는 분사공이 형성된 유두부가 형성되고, 내측에는 니들밸브가 내입되어 그 선단의 경사면이 시트부에 착탈되게 한 연료분사밸브에 있어서, 유두부에 상측분사공과 하측분사공을 구분 형성하고, 그 내부의 니들밸브에 형성된 연료통로는 그와 직교된 방향으로 상부의 유입통로와 하부의 제1분사통로 및 제2분사통로로 구분 형성한 것이다.At the tip of the valve body, a nipple with injection holes is formed, and a needle valve is inserted inside to allow the inclined surface of the tip to be attached to and detached from the seat. The fuel passage formed in the needle valve therein is divided into an inflow passage in the upper portion, a first injection passage in the lower portion, and a second injection passage in the lower portion in a direction orthogonal thereto.
Description
본 고안은 직접 분사식 디젤연료분사밸브에 있어서, 연료분사밸브의 유두부 상하에 서로 다른 분무각을 갖는 분사공을 형성하고, 니들밸브의 끝단에 이를 각기 개폐할 수 있는 연료통로를 형성하여 니들밸브의 양정에 따라 연료분무각이 변화되게 한 가변분무각을 갖는 직접분사식 연료분사밸브에 관한 것이다.The present invention is a direct injection type diesel fuel injection valve, the injection hole having different spray angles above and below the nipple of the fuel injection valve, and the fuel passage for opening and closing each of the needle valve at the end of the needle valve by forming a needle valve The present invention relates to a direct injection fuel injection valve having a variable spray angle which causes the fuel spray angle to change according to the head of the pump.
종래의 직접 분사식 연료분사밸브는 도 1 의 도시와 같이 밸브바디(1)의 선단에는 분사공(2)이 형성된 유두부(3)가 형성되고, 내측에는 니들밸브(4)가 내입되어 상하운동에 의해 그 선단의 경사면(5)이 시트부(6)에 접착 또는 이격되게 한다.In the conventional direct injection fuel injection valve, as shown in FIG. 1, a nipple portion 3 having an injection hole 2 is formed at the tip of the valve body 1, and a needle valve 4 is inserted therein to move up and down. By this, the inclined surface 5 at its tip is bonded or spaced to the seat portion 6.
도 1 b 는 분사밸브의 분사전 단면도로서 니들밸브(4)의 경사면(5)이 밸브바디(1)의 시트부(6)에 밀착되어 있어 연료통로가 차단되므로 연료가 분사되지 않는다.FIG. 1B is a cross-sectional view of the injection valve before injection, in which the inclined surface 5 of the needle valve 4 is in close contact with the seat portion 6 of the valve body 1 and thus the fuel passage is blocked so that fuel is not injected.
도 1 c는 분사밸브의 분사시 단면도로서 니들밸브(4)가 상부로 이동되어 그 경사면(5)이 시트부(6)와 이격되므로서 니들밸브(4)와 시트부(6)의 사이로 연료가 통과되어 그 분사공(2)으로 분사되는 것이다.FIG. 1 c is a cross-sectional view of the injection valve in which the needle valve 4 is moved upward and the inclined surface 5 is spaced apart from the seat portion 6 while fuel is inserted between the needle valve 4 and the seat portion 6. Is passed through and is injected into the injection hole (2).
이때의 분무각은 θ1이다.The spray angle at this time is θ 1 .
전기한 디젤기관용 직접분사식 연료분사밸브는 디젤연료의 분사시에 그 분사각도가 θ1으로 고정되어 있어 피스톤의 상승에 따른 연소실내의 복잡한 공기유통 및 체적공간 변화에 대하여 최적으로 적응하지 못하므로서 기관이 성능이 최대화 되지 못하는 문제가 있다.The direct injection fuel injection valve for diesel engines is fixed at the injection angle of θ 1 when the diesel fuel is injected, and thus the engine cannot be optimally adapted to the complicated air flow and volumetric space changes in the combustion chamber as the piston rises. There is a problem that this performance is not maximized.
본 고안은 직접 분사식 디젤기관용 연료분사밸브에 있어서, 전기한 바와 같은 문제점을 제거코저 밸브바디의 유두부에 분사공을 상하 구분 형성하여 역시 연료통공이 상하구분 형성된 니들밸브의 양정에 따라 연료의 분무각이 가변하여 최적의 분무각이 이루어지게 한 가변분무각을 갖는 직접분사식 연료분사밸브를 제공함에 그 고안의 목적이 있다.The present invention eliminates the above-mentioned problems in the fuel injection valve for a direct injection diesel engine, and the injection hole is formed in the nipple portion of the nose of the nose valve body by spraying the fuel angle according to the head of the needle valve in which the fuel hole is formed up and down. It is an object of the present invention to provide a direct injection fuel injection valve having a variable spray angle which makes this variable to achieve an optimum spray angle.
도 1 은 종래의 직접분사식 디젤연료 분사밸브 설명도로서,1 is a schematic view of a conventional direct injection diesel fuel injection valve,
a는 직접분사식 디젤연료분사밸브 단면도a is a cross-sectional view of a direct injection diesel fuel injection valve
b는 분사전의 밸브선단 확대도b is an enlarged view of the valve tip before injection
c는 분사시의 밸브선단 확대도c is an enlarged view of the valve tip at the time of injection
도 2 는 본 고안의 가변분무식의 연료분사밸브 설명도로서,2 is an explanatory view of a fuel injection valve of a variable spray type of the present invention,
a는 니들밸브의 선단부 단면도a is a sectional view of the tip of the needle valve
b는 분사전 밸브의 단면도b is the cross-sectional view of the valve before injection
c는 하측 분사공의 분사시 단면도c is a cross-sectional view of the injection of the lower injection hole
d는 상측 분사공의 분사시 단면도d is a cross-sectional view of the injection of the upper injection hole
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 밸브바디 2 : 분사공1: valve body 2: injection hole
3 : 유두부 4 : 니들밸브3: nipple head 4: needle valve
5 : 경사면 6 : 시트부5 inclined surface 6 seat portion
7 : 상측분사공 8 : 하측분사공7: upper injection hole 8: lower injection hole
9 : 연료통로 10 : 유입통로9: fuel passage 10: inflow passage
11 : 제1분사통로 12 : 제2분사통로11: first injection passage 12: second injection passage
θ2: 하측분사각 θ3: 상측분사각θ 2 : lower injection angle θ 3 : upper injection angle
이하, 본 고안의 실시예를 첨부도면에 의하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail by the accompanying drawings.
도 2 는 본 고안 연료분사밸브의 단면설명도이다.2 is an explanatory cross-sectional view of the fuel injection valve of the present invention.
밸브바디(1)의 선단에는 분사공(2)이 형성된 유두부(3)가 형성되고, 내측에는 니들밸브(4)가 내입되어 그 선단의 경사면(5)이 시트부(6)에 착탈되게 한 연료분사밸브에 있어서, 유두부(3)에 상측분사공(7)과 하측분사공(8)을 구분 형성하고, 그 내부의 니들밸브(4)에 형성된 연료통로(9)는 그와 직교된 방향으로 상부의 유입통로(10)와, 하부의 제1분사통로(11) 및 제2 분사통로(12)로 구분한다 .The tip of the valve body 1 is formed with a teat portion 3 having an injection hole 2 formed therein, and a needle valve 4 is inserted therein so that the inclined surface 5 of the tip is detached from the seat 6. In one fuel injection valve, the upper injection hole 7 and the lower injection hole 8 are separately formed in the nipple part 3, and the fuel passage 9 formed in the needle valve 4 therein is perpendicular to it. In the direction shown in the upper flow passage 10, the lower portion of the first injection passage (11) and the second injection passage (12).
여기에서 상측분사공(7)과 하측분사공(8)의 형성각도(θ3)(θ2)는 상측분사공(7)의 분사각(θ3)과 하측분사공(8)의 분사각(θ2)이 서로 다르게 형성한다.Here the upper injection port in the forming angle 7 and the lower injection port (8) (θ 3), (θ 2) the minutes of the upper injection port minutes of 7 square (θ 3) and the lower injection holes 8 square (θ 2 ) forms differently from each other.
이와 같이 된 본 고안의 작용을 설명한다.The operation of the present invention thus made will be described.
도 2 b는 본 고안 연료분사밸브의 분사전 폐변상태의 단면도로서 니들밸브(4)의 경사면(5)이 시트부(6)에 밀착되어 폐변되어 있는 상태에서 연료통로(9)의 유입통로(10)가 차단공간내에 있어서 연료의 분사가 완전 차단된다.Figure 2b is a cross-sectional view of the closed state before injection of the fuel injection valve of the present invention inflow passage of the fuel passage (9) in the state in which the inclined surface (5) of the needle valve (4) is in close contact with the seat portion (6) 10) is completely blocked in the fuel injection space.
도 2 c는 본 고안 연료분사밸브의 하측분사공(8)에 의한 분무설명도로서, 분사시작시에 화살표 방향으로 니들밸브(4)가 상승되면서 그 경사면(5)이 시트부(6)와 이격되어 그 틈사이로 연료가 통과되어 분사되는 것인데, 여기에서 제1분사통로(11)의 직경인 ℓ1만큼 상승하는 동안 하측분사공(8)과 제2분사통로(12)와 일치되어 상부의 유입통로(12)로 유입된 연료가 하측분사공(8)으로 분사하게 되어 그 분무각이 θ2를 이루는 것이다.Figure 2c is a spray explanatory view by the lower injection hole (8) of the fuel injection valve of the present invention, the inclined surface (5) and the seat portion (6) as the needle valve (4) is raised in the direction of the arrow at the start of injection It is spaced apart and the fuel is passed through the gap is injected, where the upper injection hole (8) and the second injection passage (12) coincident with the lower injection hole (8) while ascending up to ℓ 1 of the diameter of the first injection passage (11) The fuel introduced into the inflow passage 12 is injected into the lower injection hole 8 so that the spray angle is θ 2 .
도 2 d는 본 고안 연료분사밸브의 상측분사공(7)에 의한 분무설명도로서, 전기한 니들밸브(4)의 양정이 ℓ1구간을 지난 후 하측분사공(8)이 니들밸브(4)에 의해 막히면서 하측분사공이 분사를 중지하는 동시에 연료통로(9)의 제2분사통로(12)가 상측 분사공(7)과 일치되어 이에 의해 연료가 분사되므로서 분무각 θ3로 분사되는 것이다.2 d is an explanatory view of spraying by the upper injection hole 7 of the fuel injection valve of the present invention, and the lower injection hole 8 is the needle valve 4 after the head of the needle valve 4 that has been passed has passed l 1 section. ), The lower injection hole stops the injection and the second injection path 12 of the fuel passage 9 coincides with the upper injection hole 7 so that fuel is injected, thereby being injected at the spray angle θ 3 . .
그러므로 니들밸브의 양정에 따라 그 분무각이 θ2와 θ3로 변화되어 직접분사식 디젤기관에서 연료분사전의 피스톤 상승에 따른 연소실내의 복잡한 공기유동에 대하여 연료분사의 분무각이 최적으로 이루어지는 것이다.Therefore, the spray angle of the needle valve is changed to θ 2 and θ 3 so that the spray angle of the fuel injection is optimal for the complex air flow in the combustion chamber due to the piston rise before the fuel injection in the direct injection diesel engine. .
이상과 같이 본 고안은 직접분사식 디젤연료분사밸브에 있어서, 연료의 분무각을 니들밸브의 양정에 따라 가변되게 하므로서 그 분무각이 연소실내의 공간변화에 최적으로 이루어지게 하여 직접분사식 디젤기관의 연소를 최적화시켜 기관의 성능이 향상되는 효과가 있다.As described above, in the present invention, in the direct injection type diesel fuel injection valve, the spray angle of the fuel is varied according to the head of the needle valve, so that the spray angle is optimally changed to the space change in the combustion chamber so that the combustion of the direct injection diesel engine is performed. By optimizing the performance of the institution is effective.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970032512U KR200226819Y1 (en) | 1997-11-17 | 1997-11-17 | Direct Injection Fuel Injection Valves with Variable Spray Angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970032512U KR200226819Y1 (en) | 1997-11-17 | 1997-11-17 | Direct Injection Fuel Injection Valves with Variable Spray Angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19990019178U KR19990019178U (en) | 1999-06-05 |
| KR200226819Y1 true KR200226819Y1 (en) | 2001-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019970032512U Expired - Fee Related KR200226819Y1 (en) | 1997-11-17 | 1997-11-17 | Direct Injection Fuel Injection Valves with Variable Spray Angle |
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| Country | Link |
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| KR (1) | KR200226819Y1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040033796A (en) * | 2002-10-16 | 2004-04-28 | 현대자동차주식회사 | Nozzle of injector |
| KR101734583B1 (en) | 2011-12-13 | 2017-05-12 | 현대자동차주식회사 | Combustion generating device for internal combustion engine |
-
1997
- 1997-11-17 KR KR2019970032512U patent/KR200226819Y1/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040033796A (en) * | 2002-10-16 | 2004-04-28 | 현대자동차주식회사 | Nozzle of injector |
| KR101734583B1 (en) | 2011-12-13 | 2017-05-12 | 현대자동차주식회사 | Combustion generating device for internal combustion engine |
| DE102012107054B4 (en) * | 2011-12-13 | 2021-03-25 | Hyundai Motor Company | Combustion generating device of an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990019178U (en) | 1999-06-05 |
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