KR19980078912A - Cylinder Head Coolant Passage - Google Patents
Cylinder Head Coolant Passage Download PDFInfo
- Publication number
- KR19980078912A KR19980078912A KR1019970016553A KR19970016553A KR19980078912A KR 19980078912 A KR19980078912 A KR 19980078912A KR 1019970016553 A KR1019970016553 A KR 1019970016553A KR 19970016553 A KR19970016553 A KR 19970016553A KR 19980078912 A KR19980078912 A KR 19980078912A
- Authority
- KR
- South Korea
- Prior art keywords
- cylinder head
- cooling water
- water passage
- upper wall
- coolant passage
- Prior art date
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Classifications
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- 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
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
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- 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
- F02F1/242—Arrangement of spark plugs or injectors
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- 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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/024—Cooling cylinder heads
-
- 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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
Abstract
본 발명은 엔진의 실린더 냉각수통로에 관한 것으로, 점화플러그삽입공(1)의 사이부분의 아래쪽에 형성된 냉각수통로(2)의 상부벽(2a)이 하방으로 내려진 위치(2b의 위치)에 형성됨으로써 냉각수통로(2)의 단면적이 줄게 됨으로써 실린더헤드내에 잔존하는 냉각수량의 감소로 초기시동시 탄화수소의 발생이 저감되고, 냉각수의 순환속도가 증가되어 실린더헤드의 냉각효율이 증대됨으로써 정상온도운전시 냉각수정체로 인한 실린더헤드의 과열현상이 방지되게 되었다.The present invention relates to a cylinder coolant passage of an engine, wherein the upper wall (2a) of the coolant passage (2) formed below the portion between the spark plug insertion holes (1) is formed at a position (2b) lowered downwards. By reducing the cross-sectional area of the cooling water passage (2), the amount of cooling water remaining in the cylinder head is reduced, the generation of hydrocarbons is reduced during initial startup, the circulation speed of the cooling water is increased, and the cooling efficiency of the cylinder head is increased. The overheating of the cylinder head due to congestion is prevented.
Description
본 발명은 엔진의 실린더 냉각수통로에 관한 것으로, 특히 실린더헤드내에 함유하고 있는 냉각수의 양을 줄이고, 순환속도를 증가시킴으로써 엔진의 초기운전시 배기가스의 탄화수소량을 줄이고, 정상운전시 실린더헤드의 냉각효율을 증대시킬 수 있도록 된 엔진의 실린더헤드 냉각수통로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder coolant passage of an engine, and in particular, to reduce the amount of coolant contained in the cylinder head, increase the circulation speed, reduce the amount of hydrocarbons in the exhaust gas during the initial operation of the engine, and cool the cylinder head during normal operation. The present invention relates to a cylinder head coolant passage of an engine capable of increasing efficiency.
주지된 바와 같이 엔진의 실린더헤드는 피스톤이 왕복운동하는 실린더블록의 위쪽에 체결되어 실린더블록과 같이 연소실을 형성하기 때문에 연료의 폭발과, 피스톤의 왕복운동에 의해 발생되는 고열이 전달되어 항상 고온으로 가열되기 때문에 내부에 냉각수통로를 갖추어 냉각수를 흐를 수 있게 하여 냉각시키고 있다.As is well known, the cylinder head of the engine is fastened above the cylinder block in which the piston reciprocates to form a combustion chamber like the cylinder block, so that the high temperature generated by the explosion of the fuel and the reciprocation of the piston is always transferred to a high temperature. Since it is heated, it has a cooling water passage therein to allow the cooling water to flow to cool it.
한편, 종래에는 도 1에 도시된 바와 같이 점화플러그가 설치되는 점화플러그 삽입공(1)의 사이 사이에 아래쪽으로 냉각수통로(2)가 형성되어 있는데, 그 단면형상은 도 2와 도 3에 도시된 바와 같이 대략 장방형의 형상으로 되어 있으며, 위쪽은 약 6mm 정도 두께의 상부벽(2a)으로 덮여 있으며, 아래쪽은 양측 연소실(23)과 상기 상부벽(2a)의 두께와 같은 정도의 두께를 가진 벽면을 사이에 두고 접해 있는 형상으로 되어 있다.Meanwhile, in the related art, as shown in FIG. 1, a cooling water passage 2 is formed downward between the spark plug insertion holes 1 in which the spark plugs are installed. The cross-sectional shape is shown in FIGS. 2 and 3. As shown in FIG. 2, the upper part is covered with an upper wall 2a having a thickness of about 6 mm, and the lower part has a thickness that is equal to the thickness of both combustion chambers 23 and the upper wall 2a. It has a shape that is in contact with the wall between them.
따라서, 연소실(3)에 근접한 상기 냉각수통로(2)를 통해 냉가수가 순환하면서 가열된 실린더헤드를 냉각시키게 된다.Thus, the coolant is circulated through the cooling water passage 2 adjacent to the combustion chamber 3 to cool the heated cylinder head.
그런데, 상기 종래의 냉각수통로는 그 단면적이 과도하게 크기 때문에 실린더헤드내에 잔존하는 냉각수의 양이 많으므로 엔진의 초기시동상태인 냉시동시 실린더헤드가 천천히 가열되기 때문에 연소실(3) 유입되는 혼합기의 온도에 영향을 미쳐 연소상태를 저하시킴으로써 배기가스중에 유해성분인 탄화수소가 많이 포함되게 되는 문제점이 있었다.However, since the cross-sectional area of the conventional cooling water passage is excessively large, the amount of cooling water remaining in the cylinder head is large, and thus the temperature of the mixer introduced into the combustion chamber 3 is caused because the cylinder head is slowly heated during cold start of the engine. There is a problem in that a lot of hydrocarbons that are harmful components in the exhaust gas by reducing the combustion state affects.
또한, 운전이 진행되어 정상온도에서 엔진이 작동할 때에는 냉각수의 흐름속도가 늦기 때문에 즉, 냉각수가 가열되는 실린더헤드의 내에 정체되어 있어 열에 의해 기포가 발생되고, 이는 냉각성능을 떨어뜨려 실린더헤드의 열부하 및 크랙을 발생시키게 되는 또 다른 문제점이 있었다.In addition, when the engine is operated at a normal temperature while the operation is in progress, the flow rate of the coolant is slow, that is, the coolant is stagnated in the cylinder head to be heated, and bubbles are generated by heat, which reduces the cooling performance and There was another problem that caused heat loads and cracks.
도 1은 실린더헤드의 평면도,1 is a plan view of a cylinder head,
도 2는 도 1의 I-I선 단면도,2 is a cross-sectional view taken along line II of FIG. 1;
도 3은 도 1의 II-II선 단면도이다.3 is a cross-sectional view taken along the line II-II of FIG. 1.
*도면의 주요부분에 대한 부호의 설명** Explanation of symbols for main parts of drawings *
1:점화플러그삽입공2:냉각수통로1: Ignition plug insertion hole 2: Cooling water passage
2a,2b:상부벽3:연소실2a, 2b: upper wall 3: combustion chamber
이에 본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로, 실린더헤드내에 잔존하는 냉각수의 양을 줄이고, 운전진행시 냉각수의 순환속도를 증가시킴으로써 초기운전시에 배기가스중 탄화수소의 양을 줄이고, 정상운전시 실린더헤드의 냉각효율을 증대시킬 수 있도록 된 엔진의 실린더헤드 냉각수통로를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above problems, by reducing the amount of coolant remaining in the cylinder head, increasing the circulation speed of the coolant during the operation to reduce the amount of hydrocarbons in the exhaust gas during the initial operation, It is an object of the present invention to provide a cylinder head coolant passage of an engine that can increase the cooling efficiency of the cylinder head in normal operation.
상기와 같은 목적을 달성하기 위한 본 발명은, 실린더헤드의 점화플러그 사이부분이 아래쪽에 형성된 냉각수통로에 있어서, 냉각수통로의 위쪽을 덮는 상부벽을 아래로 하향위치시켜 냉각수통로의 단면적이 줄어들도록 된 구조로 되어 있다.In the present invention for achieving the above object, in the cooling water passage formed between the spark plug of the cylinder head in the lower portion, the cross-sectional area of the cooling water passage is reduced by placing the upper wall downward covering the upper portion of the cooling water passage downwards. It is structured.
따라서, 전체체적이 줄어들므로 실린더헤드내에 잔존하는 냉각수의 양이 줄게 되고, 단면적이 줄어들므로 냉각수의 순환속도가 증대되도록 되어 있다.Therefore, the total volume is reduced, so that the amount of cooling water remaining in the cylinder head is reduced, and the cross-sectional area is reduced, so that the circulation speed of the cooling water is increased.
이하, 본 발명을 첨부된 예시도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.
도 1은 엔진의 실린더헤드의 평면도이고, 도 2와 도 3은 각각 냉각수통로의 횡단면도 및 종단면도로서, 본 발명은 점화플러그가 삽입고정되는 점화플러그 삽입공(1)의 사이부분의 아래쪽에 형성되되, 위쪽은 약 6mm 정도의 상부벽(2a)으로 덮여 있고, 아래쪽은 상부벽(2a)과 같은 정도의 두께로 된 벽면을 사이에 두고 양측 연소실(3)과 접해 있는 실린더헤드의 냉각수통로에 있어서, 상기 상부벽(2a)이 아래쪽으로 하향위치되는 즉, 점선으로 도시된 위치에 상부벽(2b)이 형성되는 구조로 되어 있다.1 is a plan view of a cylinder head of an engine, and FIGS. 2 and 3 are cross-sectional and longitudinal cross-sectional views of a cooling water passage, respectively. The present invention is formed below a portion between the spark plug insertion holes 1 into which the spark plug is fixed. The upper part is covered with the upper wall 2a of about 6mm, and the lower part is in the cooling water passage of the cylinder head which is in contact with both combustion chambers 3 with the wall surface having the same thickness as the upper wall 2a. In this case, the upper wall 2a is downwardly positioned, that is, the upper wall 2b is formed at the position shown by the dotted line.
이 상부벽(2b)의 양측단부는 기존의 상부벽(2a)의 양측단부의 시작위치와 같고, 중간부분이 양측 연소실(3)과 냉각수통로를 차단하는 아래쪽의 벽면형상과 유사하게 아래쪽으로 쳐지도록 형성되게 된다.Both end portions of the upper wall 2b are the same as the starting positions of both end portions of the existing upper wall 2a, and the middle portion thereof is struck downward, similar to the lower wall shape that blocks both the combustion chamber 3 and the cooling water passage. To form.
따라서, 냉각수통로의 단면적이 기존 냉각수통로의 단면적에 비해 대폭 줄어들므로 냉각수통로의 체적도 줄게 되어 냉각수통로내에 잔존하게 되는 냉각수의 양이 줄게 됨으로써 엔진의 초기시동시 실린더헤드가 신속하게 가열되어 연소가 활발히 일어나게 됨으로써 초기시동시의 배기가스에 함유되는 탄화수소의 양이 줄어들게 되며, 또한, 엔진이 정상온도로 운전될 시에는 단면적 축소로 인해 냉각수의 흐름속도가 빨라지게 됨으로써 라디에이터를 거쳐 순환되는 냉각수의 순환속도가 빨라져 실린더헤드의 냉각효율이 증대되게 된다.Therefore, the cross-sectional area of the cooling water passage is greatly reduced compared to the cross-sectional area of the existing cooling water passage, which reduces the volume of the cooling water passage and reduces the amount of cooling water remaining in the cooling water passage. By actively occurring, the amount of hydrocarbon contained in the exhaust gas at the initial start-up is reduced, and when the engine is operated at a normal temperature, the coolant flow rate is increased due to the reduction of the cross-sectional area, so that the circulation of the coolant circulated through the radiator Faster speed increases the cooling efficiency of the cylinder head.
따라서, 냉각수정체로 인한 기포발생, 이로인한 실린더헤드의 과열로 실린더헤드에 크랙이 발생하는 등의 현상이 일어나지 않게 된다.Therefore, the occurrence of bubbles due to the cooling water stagnation, overheating of the cylinder head, and the like, cracks in the cylinder head do not occur.
이상 설명한 바와 같이 본 발명에 따르면, 냉각수통로의 상부벽을 낮게 성형하여 냉각수통로의 단면적을 축소함으로써 실린더헤드내의 잔존 냉각수량을 감소시켜 초기시동시의 배기가스중 탄화수소의 함유량을 저감시킬 수 있으며, 정상온도의 운전시에는 냉각수의 순환속도증가로 인해 실린더헤드의 냉각효율을 증가시킴으로서 실린더헤드가 과열되는 것을 방지할 수 있게 되는 효과가 있다.As described above, according to the present invention, by forming a lower upper wall of the cooling water passage and reducing the cross-sectional area of the cooling water passage, the amount of remaining cooling water in the cylinder head can be reduced to reduce the content of hydrocarbons in the exhaust gas at the initial startup. In normal temperature operation, the cylinder head is prevented from being overheated by increasing the cooling efficiency of the cylinder head due to the increase in the circulation speed of the coolant.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970016553A KR100369549B1 (en) | 1997-04-30 | 1997-04-30 | Coolant channel of cylinder head of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970016553A KR100369549B1 (en) | 1997-04-30 | 1997-04-30 | Coolant channel of cylinder head of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980078912A true KR19980078912A (en) | 1998-11-25 |
| KR100369549B1 KR100369549B1 (en) | 2003-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019970016553A KR100369549B1 (en) | 1997-04-30 | 1997-04-30 | Coolant channel of cylinder head of engine |
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| Country | Link |
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| KR (1) | KR100369549B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444469B1 (en) * | 2002-05-28 | 2004-08-16 | 현대자동차주식회사 | Engine structure for intensifying cooling function engine coolant |
-
1997
- 1997-04-30 KR KR1019970016553A patent/KR100369549B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444469B1 (en) * | 2002-05-28 | 2004-08-16 | 현대자동차주식회사 | Engine structure for intensifying cooling function engine coolant |
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| Publication number | Publication date |
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| KR100369549B1 (en) | 2003-03-29 |
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