KR100219205B1 - Cylinder head for direct injection - Google Patents
Cylinder head for direct injection Download PDFInfo
- Publication number
- KR100219205B1 KR100219205B1 KR1019960066738A KR19960066738A KR100219205B1 KR 100219205 B1 KR100219205 B1 KR 100219205B1 KR 1019960066738 A KR1019960066738 A KR 1019960066738A KR 19960066738 A KR19960066738 A KR 19960066738A KR 100219205 B1 KR100219205 B1 KR 100219205B1
- Authority
- KR
- South Korea
- Prior art keywords
- cylinder head
- direct injection
- head portion
- injection engine
- intake
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
- F02F1/425—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels with a separate deviation element inside the channel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
본 발명의 목적은 연료의 유동 현상을 최적화하여 연료의 고른 혼합으로 연소성능을 향상시키도록 흡기 포트의 구조를 개선한 직접 분사 엔진의 실린더 헤드부를 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a cylinder head portion of a direct injection engine in which the structure of an intake port is improved so as to optimize the flow phenomenon of the fuel and improve combustion performance with even mixing of the fuel.
상기한 목적을 달성하기 위하여 본 발명은 2개의 흡기포트와 연료를 연소실에 직접 분사하는 인젝터가 설치되는 직접 분사 엔진의 실린더 헤드부에 있어서, 상기 2개의 흡기포트는 흡기매니폴드와의 접속 단부로 갈수록 그의 단면의 상하 높이차가 점차 커지게 되는 것을 특징으로 한다.In order to achieve the above object, the present invention provides a cylinder head portion of a direct injection engine in which two intake ports and an injector for directly injecting fuel into a combustion chamber are installed, and the two intake ports are connected to an intake manifold. It is characterized by gradually increasing the vertical height difference of its cross section.
Description
본 발명은 가솔린 직접 분사 엔진의 실린더 헤드부의 구조, 특히 흡기 포트의 구조 개선에 관한 것이다.The present invention relates to the improvement of the structure of the cylinder head portion of a gasoline direct injection engine, in particular of the intake port.
최근 엔진의 고출력화가 일반화되면서 흡기효율을 높이기 위하여 1실린더 4밸브, 즉 2개의 흡기포트와 2개의 배기포트를 갖는 엔진이 많이 사용되고 있다.In recent years, as the engine power is generalized, an engine having one cylinder and four valves, that is, two intake ports and two exhaust ports, has been widely used to increase intake efficiency.
그런데 상기와 같은 4-밸브 타입으로 연료를 직접 연소실에 분사하는 직접 분사엔진의 경우 도 6 내지 도 8 에 도시하는 것과 같이 연료 분사를 위한 인젝터(10)가 흡기포트(11(11a,11b))아래에 위치하기 때문에 연료의 분무각이 한정되어 와류 발생 및 연료 혼합이 잘 이루어지지 않는 문제점이 있었다. 이는 2개의 흡기 포트(11a)(11b)가 나란히 이웃하고 있어 그 사이의 공간이 좁기 때문에 이를 피해 흡기포트(11a)(11b)하부에 설치하고 있기 때문이다.However, in the case of the direct injection engine for directly injecting fuel into the combustion chamber with the four-valve type as described above, as shown in FIGS. 6 to 8, the injector 10 for fuel injection includes the intake ports 11 (11a and 11b). Since it is located below the spray angle of the fuel is limited, there was a problem that the vortex generation and fuel mixing is not made well. This is because two intake ports 11a and 11b are adjacent to each other side by side and the space therebetween is narrow so that the intake ports 11a and 11b are provided below the intake ports 11a and 11b.
이에 본 발명은 상기한 문제점을 감안하여 제안된 것으로써 그의 목적으로 하는 바는 연료의 유동 현상을 최적화하여 연료의 고른 혼합으로 연소성능을 향상시키도록 흡기 포트의 구조를 개선한 직접 분사 엔진의 실린더 헤드부를 제공하는데 있다.Accordingly, the present invention has been proposed in view of the above problems, and its object is to optimize the flow phenomenon of the fuel and improve the combustion performance by the even mixing of fuel to improve the combustion performance of the cylinder of the direct injection engine To provide a head portion.
본 발명은 상기한 목적을 달성하기 위하여The present invention to achieve the above object
2개의 흡기포트와 연료를 연소실에 직접 분사하는 인젝터가 설치되는 직접 분사 엔진의 실린더 헤드부에 있어서, 상기 2개의 흡기포트는 흡기매니폴드와의 접속 단부로 갈수록 그의 단면의 상하 높이차가 점차 커지게 되는 것을 특징으로 한다.In the cylinder head portion of a direct injection engine in which two intake ports and an injector for directly injecting fuel into the combustion chamber are provided, the two intake ports gradually increase in the vertical height of their cross-sections toward the connecting end with the intake manifold. It is characterized by.
도 1 은 본 발명에 의한 직접 분사 엔진의 실린더 헤드부의 정단면도1 is a front sectional view of a cylinder head portion of a direct injection engine according to the present invention.
도 2 은 동상 실린더 헤드부의 평면도2 is a plan view of the in-phase cylinder head portion;
도 3 은 동상 실린더 헤드부의 측면도3 is a side view of the in-phase cylinder head portion;
도 4 는 동상 실린더 헤드부의 A-A 단면도4 is a cross-sectional view A-A of the in-phase cylinder head portion;
도 5 는 동상 실린더 헤드부의 B-B 단면도5 is a cross-sectional view B-B of the in-phase cylinder head portion;
도 6 은 종래 직접 분사 엔진의 실린더 헤드부의 정단면도6 is a front sectional view of a cylinder head portion of a conventional direct injection engine.
도 7 은 도 6 의 평면도FIG. 7 is a plan view of FIG. 6
도 8 은 도 6 의 Z-Z 단면도8 is a cross-sectional view taken along the line Z-Z of FIG.
도 9 는 도 6 의 Y-Y 단면도9 is a cross-sectional view taken along line Y-Y of FIG.
* 도면 중 주요 부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 실린더헤드 2,3 : 흡기포트1: Cylinder head 2,3: Intake port
4 : 연소실 5 : 인젝터4: combustion chamber 5: injector
a,b,c : 높이차a, b, c: height difference
이하 본 발명의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.
도 1 은 본 발명에 의한 직접 분사 엔진의 실린더 헤드의 정단면도이며1 is a front sectional view of a cylinder head of a direct injection engine according to the present invention.
도 2 는 동상 실린더 헤드의 평면도이며 도 3 은 그의 측면도, 도 4 는 A-A 단면도이고 도 5 는 B-B 단면도이다.2 is a plan view of the in-phase cylinder head, FIG. 3 is a side view thereof, FIG. 4 is a sectional view taken along line A-A, and FIG. 5 is a sectional view taken along line B-B.
본 발명 실린더 헤드(1)는 4-밸브 타입, 또는 3-밸브 타입으로써 어느것이나 2개의 흡기포트(2)(3)는 연소실(4) 내측에서 보아서는 나란히 인접하고 있지만 흡기매니폴드와의 접속부측으로 갈수록 그의 단면의 높이차(a,b,c)가 점차 벌어지도록 형성되어 있다. 즉 일측 흡기포트(2)는 누워있는 형상인데 반하여 타측 흡기포트(3)는 수직에 가깝게 세워져 있는 형상으로 양측 포트(2)(3)의 높이차에 의해 형성된 몸체를 통하여, 즉 양측 포트(2)(3) 사이로 연소실(4)에 연료를 분사하기 위한 인젝터(5)가 설치된다.The cylinder head 1 of the present invention is a four-valve type or a three-valve type, and both of the intake ports 2 and 3 are adjacent to each other side by side in the combustion chamber 4, but are connected to the intake manifold. It is formed so that the height difference (a, b, c) of the cross section may become wider gradually toward the side. In other words, the one side intake port 2 is in a lying shape, while the other intake port 3 is erected close to a vertical shape through a body formed by the height difference between the two ports 2, 3, that is, both ports 2. An injector 5 for injecting fuel into the combustion chamber 4 is installed.
이에 따라 2개의 포트(2)(3)에서 연소실(4)로 유입되는 공기의 흐름 방향이 서로 달라 강한 와류를 형성하고 피스톤의 상승시 피스톤 탑면에 부딪히는 서로 다른 공기 유동에 의해 스퀴시(맴돌이 현상)효과가 증대된다.Accordingly, the flow direction of the air flowing into the combustion chamber 4 from the two ports 2 and 3 is different from each other to form a strong vortex and squish due to different air flows hitting the piston top surface when the piston is raised. The effect is increased.
또한 2개의 흡기 포트(2)(3) 사이의 벌어진 공간을 통하여 인젝터(5)를 설치하게 되므로 인젝터(5)의 각도 변경이 가능하다.In addition, since the injector 5 is installed through the open space between the two intake ports 2 and 3, the angle of the injector 5 can be changed.
이상과 같은 본 발명에 의하면 2개의 흡기포트의 형상을 달리하여 연소실에 유입되는 공기의 와류를 촉진하게 되며 더욱이 흡기포트의 형상 변경으로 인젝터의 설치각이 자유로워져 연료의 고른 무화를 촉진할 수 있어 연소성능을 개선하게 되는 효과가 있다.According to the present invention as described above, by changing the shape of the two intake ports to promote the vortex of the air flowing into the combustion chamber and by changing the shape of the intake port, the installation angle of the injector can be freed to promote even atomization of fuel. There is an effect to improve the combustion performance.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960066738A KR100219205B1 (en) | 1996-12-17 | 1996-12-17 | Cylinder head for direct injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960066738A KR100219205B1 (en) | 1996-12-17 | 1996-12-17 | Cylinder head for direct injection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980048186A KR19980048186A (en) | 1998-09-15 |
| KR100219205B1 true KR100219205B1 (en) | 1999-09-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960066738A KR100219205B1 (en) | 1996-12-17 | 1996-12-17 | Cylinder head for direct injection |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100219205B1 (en) |
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1996
- 1996-12-17 KR KR1019960066738A patent/KR100219205B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR19980048186A (en) | 1998-09-15 |
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