KR200149359Y1 - Heat transformation reduce structure of valve bridge - Google Patents
Heat transformation reduce structure of valve bridge Download PDFInfo
- Publication number
- KR200149359Y1 KR200149359Y1 KR2019960051505U KR19960051505U KR200149359Y1 KR 200149359 Y1 KR200149359 Y1 KR 200149359Y1 KR 2019960051505 U KR2019960051505 U KR 2019960051505U KR 19960051505 U KR19960051505 U KR 19960051505U KR 200149359 Y1 KR200149359 Y1 KR 200149359Y1
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- KR
- South Korea
- Prior art keywords
- valve bridge
- bridge portion
- intake
- cylinder head
- nozzle
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/14—Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2810/00—Arrangements solving specific problems in relation with valve gears
- F01L2810/01—Cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
본 고안은 디젤엔진의 실린더헤드에 형성되는 밸브 브릿지부가 고열에 의해 변형되는 것을 방지할 수 있도록 한 밸브 브릿지부의 열변형력 저감구조에 관한 것으로, 흡기 및 배기포트 각각의 사이에 밸브 브릿지부를 형성하고, 중앙에는 인젝터 노즐을 설치할 수 있는 노즐설치공을 형성시킨 실린더헤드에 있어서, 상기 실린더헤드의 흡기 및 배기포트 상부에 노즐홀과 사방 십자형으로 핀이 돌설된 핀부재를 매설하되, 흡기 및 배기포트의 중앙부분에는 노즐홀이 위치하도록 하고, 사방 십자형으로 돌설된 각각의 핀들은 흡기 및 배기포트의 사이에 형성된 밸브 브릿지부 상부에 일부가 돌출된 상태로 설치하여서 된 것을 특징으로 하는 것이다.The present invention relates to a structure for reducing the heat deformation force of the valve bridge portion to prevent deformation of the valve bridge portion formed in the cylinder head of the diesel engine by high heat, and forms a valve bridge portion between each of the intake and exhaust ports, In the center of the cylinder head formed with a nozzle mounting hole for installing the injector nozzle, a pin member in which the pin is protruded in the shape of a cross in all directions with the nozzle hole at the upper part of the intake and exhaust ports of the cylinder head, The nozzle hole is positioned at the center portion, and each of the fins protruding in the cross shape is formed by protruding a part of the valve bridge portion formed between the intake and exhaust ports.
Description
본 고안은 디젤엔진의 실린더헤드에 형성되는 밸브 브릿지부가 고열에 의해 변형되는 것을 방지할 수 있도록 한 밸브 브릿지부의 열변형력 저감구조에 관한 것이다.The present invention relates to a structure for reducing the thermal deformation force of the valve bridge portion to prevent deformation of the valve bridge portion formed in the cylinder head of the diesel engine by high heat.
종래 기술 4기통 디젤엔진의 실린더헤드는 도 4에 도시된 바와같이 흡기포트(Intake Port)(100)와 배기포트(Exhaust Port)(101)가 각각 2개씩 형성되어 있으며, 각각의 흡기포트(100) 및 배기포트(101)에는 흡기밸브와 배기밸브(도시 생략)가 설치되어 있고, 또 흡기 및 배기포트의 중앙에는 인젝터 노즐을 삽입시키는 노즐설치공(102)이 형성되어 있다.As shown in FIG. 4, the cylinder head of the conventional four-cylinder diesel engine includes two intake ports 100 and two exhaust ports 101, and each intake port 100. ) And the exhaust port 101 are provided with an intake valve and an exhaust valve (not shown), and a nozzle installation hole 102 for inserting an injector nozzle in the center of the intake and exhaust ports is formed.
또한 도 5에서 보듯이 상기한 흡기포트(100) 및 배기포트(101) 각각의 사이에는 그것들을 구획하는 밸브 브릿지부(103)가 형성되어 있으며, 흡기 및 배기포트의 내벽에는 밸브시트(104)가 형성되어 있다.In addition, as shown in FIG. 5, a valve bridge portion 103 is formed between each of the intake port 100 and the exhaust port 101. The valve seat 104 is formed on the inner wall of the intake and exhaust ports. Is formed.
그리고 흡기포트(100)와 배기포트(101)의 상측으로는 냉각수통로(105)가 형성되어 열교환하도록 구성되어 있다.A cooling water passage 105 is formed above the intake port 100 and the exhaust port 101 so as to exchange heat.
그러나 흡기 및 배기포트 각각의 사이에 형성되어 있는 밸브 브릿지부(103)의 상면에 형성된 냉각수통로(105)는 마치 협곡과 같은 구조로 되어 있어 냉각수와의 접촉면적이 비교적 좁은 상태이므로 밸브 브릿지부(103)의 열교환작용이 미흡한 문제점이 있으며, 이같이 밸브 브릿지부가 열방출작용이 미흡하게 되면 밸브 브릿지부가 열변형력이 커져 크랙현상이 발생되는 문제점이 있게 된다.However, the cooling water passage 105 formed on the upper surface of the valve bridge portion 103 formed between each of the intake and exhaust ports has a structure like a canyon so that the contact area with the cooling water is relatively narrow, so that the valve bridge portion ( There is a problem that the heat exchange action of 103) is insufficient, and thus, if the valve bridge part has insufficient heat release action, there is a problem in that the valve bridge part has a large thermal deformation force and a crack phenomenon occurs.
왜냐하면 연소실에서 발생되는 고열 및 고압이 밸브 브릿지부에 집중적으로 전달되기 때문이다.This is because high heat and high pressure generated in the combustion chamber are concentrated in the valve bridge portion.
본 고안은 종래와 같이 밸브 브릿지부가 고열,고압에 의하여 열변형을 일으키는 것을 방지하고 안출한 것으로, 흡기 및 배기포트 각각의 사이에 밸브 브릿지부 자체에 강도를 보강시키는 작용과 함께 열방출작용을 촉진시킬 수 있는 핀(Fin)부재를 설치하여 밸브 브릿지부의 열변형력을 저감시킬 수 있도록 하는데 그 목적을 두고 고안한 것이다.The present invention prevents and deforms the valve bridge portion due to high heat and high pressure as in the prior art, and promotes heat release action with the action of reinforcing the strength of the valve bridge portion itself between each intake and exhaust port. It is designed with the purpose to reduce the thermal deformation force of the valve bridge by installing a fin member that can be made.
본 고안은 상기와 같은 목적을 달성하기 위한 수단으로서, 흡기 및 배기포트 각각의 사이에 밸브 브릿지부를 형성하고, 중앙에는 인젝터 노즐을 설치할 수 있는 노즐설치공을 형성시킨 실린더헤드에 있어서, 상기 실린더헤드의 흡기 및 배기포트 상부에 노즐홀과 사방 십자형으로 핀이 돌설된 핀부재를 매설하되, 흡기 및 배기포트의 중앙부분에는 노즐홀이 위치하도록 하고, 사방 십자형으로 돌설된 각각의 핀들은 흡기 및 배기포트의 사이에 형성된 밸브 브릿지부 상부에 일부가 돌출된 상태로 설치하여서 된 것을 특징으로 하는 것이다.The present invention as a means for achieving the above object, in the cylinder head formed with a valve bridge portion between each of the intake and exhaust ports, and the nozzle mounting hole for installing the injector nozzle in the center, the cylinder head Buried in the top of the intake and exhaust ports of the nozzle hole and the pin member protruding in all directions crosswise, the nozzle hole is located in the center of the intake and exhaust port, each of the fins protruding in all directions cross the intake and exhaust It is characterized in that it is installed in a state in which a portion protrudes in the upper portion of the valve bridge portion formed between the port.
도 1은 본 고안의 설치상태를 나타내기 위한 평면 구조도.1 is a plan view showing the installation state of the present invention.
도 2는 본 고안의 설치상태를 나타낸 단면도.2 is a cross-sectional view showing an installation state of the present invention.
도 3은 본 고안의 요부인 핀부재의 사시도.Figure 3 is a perspective view of the pin member which is the main part of the present invention.
도 4는 종래 기술의 연소실 상부의 평면 구조도.Figure 4 is a plan view of the top of the combustion chamber of the prior art.
도 5는 종래 기술의 밸브 브릿지부의 단면도.5 is a cross-sectional view of a valve bridge portion of the prior art.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
1 : 핀부재 2 : 노즐홀1: pin member 2: nozzle hole
3 : 실린더헤드 4 : 흡기포트3: cylinder head 4: intake port
5 : 배기포트 6 : 밸브 브릿지5: exhaust port 6: valve bridge
7 : 냉각수통로7: cooling water passage
본 고안의 실시예를 첨부한 도면에 따라서 상세히 설명하면 다음과 같다.An embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 고안의 설치상태를 나타내기 위한 평면 구조도이며, 도 2는 본 고안의 설치상태를 나타낸 단면도이고, 도 3은 본 고안의 요부인 핀부재의 사시도를 나타낸 도면으로,1 is a plan view showing the installation state of the present invention, Figure 2 is a cross-sectional view showing the installation state of the present invention, Figure 3 is a view showing a perspective view of the pin member which is the main part of the present invention,
도면부호 1은 핀부재를 나타내는 것으로, 상기 핀부재(1)는 중앙에 형성된 노즐홀(2)의 외주 사방에 십자형을 이루도록 4개의 핀(2a)들이 형성되어 있으며, 또한 상기 핀부재(1)는 실린더헤드(3)에 형성되는 흡기포트(4)와 배기포트(5) 중앙에는 노즐홀(2)이, 십자형으로 형성되는 밸브 브릿지부(6)들 상면에는 4개의 핀(2a)들이 일부는 매설되고, 일부는 돌출되게 형성한 것이다.Reference numeral 1 denotes a pin member, and the pin member 1 is formed with four pins 2a formed crosswise around the outer periphery of the nozzle hole 2 formed at the center, and the pin member 1 The nozzle hole 2 is formed at the center of the intake port 4 and the exhaust port 5 formed in the cylinder head 3, and the four fins 2a are partially formed on the upper surface of the valve bridge portions 6 formed in the cross shape. Is embedded, and some are formed to protrude.
상기와 같은 핀부재(1)는 실린더헤드(3)를 사형틀로서 제작할 때 그 사형틀에 미리 삽입시킨 상태에서 용탕을 주입하여 주조하는 것인데, 이때 핀부재(1)의 일부는 사형에 매설되게 하고, 일부는 돌출되게 하는 작업공정으로 주조한 후 사형을 탈사하게 되면 사형에 매설된 부분은 밸브 브릿지부(6) 상방으로 돌출되는 것이고, 반대로 사형에서 돌출됐던 부분 밸브 브릿지부(6)에 매설되어지는 것이다.The pin member 1 as described above is to inject the molten metal in the state of inserting the cylinder head 3 as a mold in advance in the mold, in which part of the pin member 1 is embedded in the sand mold If the part is cast in the working process to protrude, and then the sand mold is removed, the part embedded in the sand mold is projected upward from the valve bridge portion 6, and, on the contrary, the part embedded in the sand mold projected from the sand mold is embedded in the valve bridge portion 6. It is done.
이와같이 구성된 본 고안의 작용을 설명하면, 실린더헤드(3)의 흡기포트(4)와 배기포트(5) 각각의 사이에 형성되는 밸브 브릿지부(6) 상면에 일부가 매설된채로 설치되는 핀부재(1)의 각 핀(2a)들은 상기한 밸브 브릿지부(6)와 일체가 되어 마치 보강리브의 역할을 하게 되어 밸브 브릿지부(6)의 강도를 증강시키는 작용을 하게 되는 것이며, 또한 밸브 브릿지부(6) 상면에서 돌출된 부분은 냉각수통로(7)를 흐르는 냉각수와의 열교환 접촉면적을 증대시키는 작용을 하여 밸브 브릿지부(6)에 전달된 고열을 냉각수에 빠르게 열교환시켜 열방출작용을 증대시키는 역할을 하게 되는 것이다.Referring to the operation of the present invention configured as described above, the pin member is installed with a part embedded in the upper surface of the valve bridge portion 6 formed between each of the intake port 4 and the exhaust port 5 of the cylinder head (3) Each pin (2a) of (1) is integral with the above-described valve bridge portion 6 and acts as a reinforcing rib to act to enhance the strength of the valve bridge portion 6, and also the valve bridge The portion protruding from the upper surface of the portion 6 acts to increase the heat exchange contact area with the cooling water flowing through the cooling water passage 7, thereby rapidly exchanging the high heat transferred to the valve bridge portion 6 with the cooling water to increase the heat dissipation effect. It will play a role.
한편, 상기한 핀부재(1)의 노즐홀(2)은 실린더헤드(3)의 주조 후 후가공으로 인젝터 노즐을 설치하는 것이다.On the other hand, the nozzle hole (2) of the pin member (1) is to install the injector nozzle by post-processing after the casting of the cylinder head (3).
상기와 같은 본 고안에 의하면, 실린더헤드의 흡기 및 배기포트들의 각각의 사이를 십자형으로 구획하고 있는 밸브 브릿지부 상면에 노즐홀과 십자형의 핀이 일체로 형성된 핀부재를 일부는 매설되게 하고, 일부는 돌출되게 하는 구성으로서 밸브 브릿지부의 강성을 증강시키는 효과와 함께 열교환면적을 넓혀주는 효과가 있으며, 특히 핀부재가 냉각수통로에 돌출된 상태에서 냉각수와 직접적으로 접촉하는 상태이므로 열교환작용의 향상을 기대할 수 있어 밸브 브릿지부의 열방출효과가 커져 밸브 브릿지부의 열변형력을 저감시키는 효과가 있는 실용적인 고안이다.According to the present invention as described above, some of the pin member formed integrally with the nozzle hole and the cross-shaped pin on the upper surface of the valve bridge portion which crosswise partitions between each of the intake and exhaust ports of the cylinder head, and partially Is a configuration to protrude, which has the effect of enhancing the rigidity of the valve bridge portion and widening the heat exchange area. Especially, since the fin member is in direct contact with the coolant in a state where the fin member protrudes into the coolant passage, it is expected to improve the heat exchange effect. It is possible to increase the heat dissipation effect of the valve bridge portion is practical design with the effect of reducing the heat deformation force of the valve bridge portion.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960051505U KR200149359Y1 (en) | 1996-12-19 | 1996-12-19 | Heat transformation reduce structure of valve bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960051505U KR200149359Y1 (en) | 1996-12-19 | 1996-12-19 | Heat transformation reduce structure of valve bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980038443U KR19980038443U (en) | 1998-09-15 |
| KR200149359Y1 true KR200149359Y1 (en) | 1999-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960051505U KR200149359Y1 (en) | 1996-12-19 | 1996-12-19 | Heat transformation reduce structure of valve bridge |
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| Country | Link |
|---|---|
| KR (1) | KR200149359Y1 (en) |
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1996
- 1996-12-19 KR KR2019960051505U patent/KR200149359Y1/en not_active IP Right Cessation
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| KR19980038443U (en) | 1998-09-15 |
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