KR100256921B1 - Mechanism of intake port for increasing intake area in cylinder head - Google Patents

Mechanism of intake port for increasing intake area in cylinder head Download PDF

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Publication number
KR100256921B1
KR100256921B1 KR1019970050458A KR19970050458A KR100256921B1 KR 100256921 B1 KR100256921 B1 KR 100256921B1 KR 1019970050458 A KR1019970050458 A KR 1019970050458A KR 19970050458 A KR19970050458 A KR 19970050458A KR 100256921 B1 KR100256921 B1 KR 100256921B1
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South Korea
Prior art keywords
intake
cylinder head
increasing
volume
intake port
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KR1019970050458A
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Korean (ko)
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KR19990027927A (en
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오재욱
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김태구
대우자동차주식회사
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Priority to KR1019970050458A priority Critical patent/KR100256921B1/en
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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
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

PURPOSE: An intake port structure of a cylinder head for increasing an intake volume is provided to change the flow of fluid by a volume part formed in a suction port for increasing the flow at a dead zone portion at a lower end part of a suction valve, thereby increasing the air intake amount by removing the loss due to the surface resistance in the suction port and the decrease of the fluid intake efficiency, and improving the engine performance and the combustion characteristics. CONSTITUTION: An intake port structure of a cylinder head for increasing an intake volume includes a suction port(10) and a discharge port(56) formed at both sides with an inclination angle at an upper part of a combustion chamber(52) of a cylinder head(50), and a concave-shaped volume part(12) formed inwardly at a part contacting an upper part of a suction valve(58) of the suction port for increasing a volume.

Description

흡기체적 증대를 위한 실린더 헤드의 흡기포트 구조Intake port structure of cylinder head to increase intake volume

본 발명은 실린더 헤드의 흡기포트에 관한 것으로, 특히 인테이크 매니폴드로부터 실린더 헤드의 흡기포트를 통해 연소실로 유입되는 혼합기(유체)의 체적효율을 증대시키기 위해 흡기포트의 흡기밸브 상부와 접하는 안쪽으로 체적증대를 위한 오목한 형상의 볼륨부를 형성하여 유체의 흐름을 보다 원활하게 하는 흡기체적 증대를 위한 실린더 헤드의 흡기포트 구조에 관한 것이다.The present invention relates to an intake port of a cylinder head, in particular a volume inwardly in contact with the upper portion of the intake valve of the intake port to increase the volumetric efficiency of the mixer (fluid) flowing from the intake manifold into the combustion chamber through the intake port of the cylinder head. It relates to an intake port structure of a cylinder head for increasing the intake volume to form a concave-shaped volume portion for increasing the flow of the fluid more smoothly.

도 1은 종래 실린더 헤드의 흡기포트를 예시한 단면도이고, 도 2는 도 1에 도시된 흡기포트의 흐름설명도를 도시한 것이다.1 is a cross-sectional view illustrating an intake port of a conventional cylinder head, Figure 2 is a flow diagram illustrating the intake port shown in FIG.

도 1 및 도 2에 도시된 바와 같이 실린더 헤드(50)의 연소실(52)의 상부로는 좌우로 경사각을 갖고 흡기포트(54)와 배기포트(56)가 각각 형성되고, 이를 개폐시키는 흡기밸브(58)와 배기밸브(60)가 각각 설치된다.As shown in FIGS. 1 and 2, an intake port 54 and an exhaust port 56 are formed on the upper side of the combustion chamber 52 of the cylinder head 50 and have an inclination angle from side to side, respectively. 58 and exhaust valve 60 are provided, respectively.

도 2에 도시된 바와 같이 인테이크 매니폴드(도시안됨)로부터 흡기포트(54)로 들어오기까지의 유체의 흐름은 화살표 L로 표시할 수 있다.As shown in FIG. 2, the flow of fluid from the intake manifold (not shown) to the intake port 54 may be indicated by arrow L. As shown in FIG.

이때 흡기밸브(58)의 밸브면과 접하는 흡기포트(54)의 상부 영역(M)과 하부영역(N)으로 도달하는 유체는, 유체의 흐름 방향(L)에 의해 흡기밸브(58)의 밸브면과 접하는 흡기포트(54)의 상부 접촉면(A)(즉, 상부 영역(M))에서 벽면 저항을 받게 되어 상부 영역(M)에서의 유체 모멘트가 크게 발생하고, 상대적으로 하부 영역(N)에서는 유체 모멘트가 작게 발생하여 엔진의 저속구간시에 유체의 체적효율이 나빠져 결국 엔진의 성능을 저하시키게 된다.At this time, the fluid reaching the upper region M and the lower region N of the intake port 54 in contact with the valve surface of the intake valve 58 is controlled by the flow direction L of the valve of the intake valve 58. The wall contact resistance is received at the upper contact surface A (ie, the upper region M) of the intake port 54 in contact with the surface, so that the fluid moment in the upper region M is large, and the lower region N is relatively. In this case, the fluid moment is small, and the volumetric efficiency of the fluid is deteriorated at the low speed of the engine, thereby degrading the performance of the engine.

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위해 창안된 것으로, 실린더 헤드의 흡기포트에 있어 종래와 같이 상부 영역에서의 유체의 표면 저항에 의한 손실과 흡기밸브 하단부쪽(즉 흡기포트의 하부 영역)의 데드 존(dead zone) 부위의 흡입효율저하를 없애 흡입공기의 유입 량을 증대시키고, 동시에 흡기포트의 상부 영역의 면적을 확장시켜 흡입공기밀도의 증대로 인한 엔진 성능 및 연소 특성을 향상시킬 수 있도록 하는 흡기체적 증대를 위한 실린더 헤드의 흡기포트 구조를 제공하는데 그 목적이 있다.The present invention was devised to solve the problems of the prior art as described above, and the loss caused by the surface resistance of the fluid in the upper region as in the conventional intake port of the cylinder head and the lower side of the intake valve (ie, the lower portion of the intake port) Improves engine performance and combustion characteristics by increasing the intake air density by increasing the intake air intake by reducing the intake efficiency decrease in the dead zone of the zone). It is an object of the present invention to provide an intake port structure of a cylinder head for increasing an intake volume.

상기의 목적을 달성하기 위해 본 발명은 실린더 헤드의 연소실 상부에 좌우로 경사각을 갖고 흡기포트와 배기포트가 각각 형성되는 것에 있어서, 상기 흡기포트의 흡기밸브의 접하는 안쪽으로 체적증대를 위한 오목한 형상의 볼륨부를 형성한 것으로, 상기 볼륨부에 의해 유체의 흐름저항을 줄이고, 동시에 흡기포트의 데드 존 영역에서의 유체 흐름 모멘트를 증대시켜 전체적인 흡기포트의 체적효율을 증대시킬 수 있도록 한 것이다.In order to achieve the above object, the present invention has an inclination angle left and right on an upper portion of a combustion chamber of a cylinder head, and an intake port and an exhaust port are formed, respectively, wherein a concave shape for increasing the volume inside the intake valve of the intake port is formed. The volume portion is formed to reduce the flow resistance of the fluid and at the same time increase the fluid flow moment in the dead zone region of the intake port to increase the volume efficiency of the overall intake port.

도 1은 종래 실린더 헤드의 흡기포트를 예시한 단면도.1 is a cross-sectional view illustrating an intake port of a conventional cylinder head.

도 2는 도 1에 도시된 흡기포트의 흐름설명도.2 is an explanatory view of the flow of the intake port shown in FIG.

도 3은 본 발명의 실린더 헤드의 흡기포트를 예시한 단면도.3 is a cross-sectional view illustrating an intake port of a cylinder head of the present invention.

도 4는 도 3에 도시된 흡기포트의 흐름설명도.4 is an explanatory view of the flow of the intake port shown in FIG.

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

10 : 흡기포트 12 : 볼륨부10: intake port 12: volume portion

50 : 실린더 헤드 52 : 연소실50: cylinder head 52: combustion chamber

56 : 배기포트 58 : 흡기밸브56 exhaust port 58 intake valve

60 : 배기밸브60: exhaust valve

이하에서 본 발명의 바람직한 실시 예를 첨부된 도면에 의거 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 설명에서 종래와 동일 또는 동등한 부분은 같은 도면부호로 표기하여 설명한다.In the description of the present invention, the same or equivalent parts as in the prior art will be described with the same reference numerals.

도 3은 본 발명의 실린더 헤드의 흡기포트를 예시한 단면도이고, 도 4는 도 3에 도시된 흡기포트의 흐름설명도를 도시한 것이다.Figure 3 is a cross-sectional view illustrating an intake port of the cylinder head of the present invention, Figure 4 shows a flow diagram of the intake port shown in FIG.

도 3 및 도 4에 도시된 바와 같이 실린더 헤드(50)의 연소실(52) 상부에 좌우로 경사각을 갖고 흡기포트(10)와 배기포트(56)가 각각 형성되는 것에 있어서, 상기 흡기포트(10)의 흡기밸브(58)의 상부와 접하는 안쪽으로 체적증대를 위한 오목한 형상의 볼륨부(12)를 형성하여 구성한 것이다.As shown in FIGS. 3 and 4, the intake port 10 and the exhaust port 56 are formed on the combustion chamber 52 of the cylinder head 50 at an inclination angle from side to side, respectively. It is configured by forming a concave volume portion 12 for increasing the volume inwardly in contact with the upper portion of the intake valve (58).

상기와 같이 구성된 본 발명에 의하면 도 4에 도시된 바와 같이 인테이크 매니폴드(도시안됨)로부터 흡기포트(10)로 들어오기까지의 유체의 흐름은 화살표 L로 표시할 수 있다.According to the present invention configured as described above as shown in Figure 4 the flow of fluid from the intake manifold (not shown) to the intake port 10 can be represented by the arrow L.

상기와 같이 흐르는 유체는 흡기밸브(58)의 상부와 접하는 흡기포트(10)에 형성된 볼륨부(12)에 의해 제 2화살표방향(LL)과 같이 흐르게 되어 흡기밸브(58)와 접하는 흡기포트(10)의 상부 영역(M)에서의 벽면 저항을 줄이고, 그 대신 볼륨부(12)를 돌아 나온 유체가 데드 존인 하부 영역(N)에서의 유체 흐름을 증대시키는 결과를 가져와 흡기포트(10)의 전체적인 효율을 증대시키게 된다.The fluid flowing as described above is flowed in the second arrow direction LL by the volume part 12 formed in the intake port 10 in contact with the upper portion of the intake valve 58, so as to be in contact with the intake valve 58 ( 10 reduces the wall resistance in the upper region M, and instead increases the fluid flow in the lower region N where the fluid exiting the volume portion 12 is a dead zone of the intake port 10. It will increase the overall efficiency.

그리고 상기 볼륨부(12)에 의해 흡기포트(10)의 면적이 커지게 되어 유체의 냉각효과가 증대되어 흡입공기의 밀도를 높일 수 있게 되는 것이다.In addition, the area of the intake port 10 is increased by the volume unit 12, so that the cooling effect of the fluid is increased to increase the density of the intake air.

이상에서 설명한 바와 같이 본 발명은 흡기포트에 형성된 볼륨부에 의해 유체의 흐름을 변환시켜 데드 존 부위의 유체 흐름을 증대시킴으로서 종래와 같은 흡기포트에서 안고 있는 표면 저항에 의한 손실 및 유체흡입효율저하를 없애 흡입공기유량을 증대시키고, 흡입공기의 밀도를 증대시켜 엔진성능의 향상과 함께 연소특성을 향상시키는 효과를 갖게 되는 것이다.As described above, the present invention converts the flow of the fluid by the volume portion formed in the intake port to increase the fluid flow in the dead zone, thereby reducing the loss and the fluid intake efficiency decrease due to the surface resistance held in the conventional intake port. This will increase the intake air flow rate, increase the density of the intake air, thereby improving the engine performance and improving the combustion characteristics.

Claims (1)

실린더 헤드(50)의 연소실(52) 상부에 좌우로 경사각을 갖고 흡기포트(10)와 배기포트(56)가 각각 형성되는 것에 있어서,In the inlet port 10 and the exhaust port 56 are formed with an inclination angle left and right on the combustion chamber 52 of the cylinder head 50, respectively, 상기 흡기포트(10)의 흡기밸브(58)의 상부와 접하는 안쪽으로 체적증대를 위한 오목한 형상의 볼륨부(12)를 형성하여 구성한 것을 특징으로 하는 흡기체적 증대를 위한 실린더 헤드의 흡기포트 구조.Intake port structure of the cylinder head for increasing the intake volume, characterized in that the condensed volume portion 12 for forming the volume formed inwardly in contact with the upper portion of the intake valve (58) of the intake port (10).
KR1019970050458A 1997-09-30 1997-09-30 Mechanism of intake port for increasing intake area in cylinder head KR100256921B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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KR102677746B1 (en) 2023-08-23 2024-06-25 구진섭 Bed soil arrange apparatus for seedling box with easy height adjustment of bed soil

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4657177B2 (en) * 2006-08-29 2011-03-23 本田技研工業株式会社 Internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102677746B1 (en) 2023-08-23 2024-06-25 구진섭 Bed soil arrange apparatus for seedling box with easy height adjustment of bed soil

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