KR200168055Y1 - Combustion chamber swirl generation structure of internal combustion engine - Google Patents
Combustion chamber swirl generation structure of internal combustion engine Download PDFInfo
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- KR200168055Y1 KR200168055Y1 KR2019940018698U KR19940018698U KR200168055Y1 KR 200168055 Y1 KR200168055 Y1 KR 200168055Y1 KR 2019940018698 U KR2019940018698 U KR 2019940018698U KR 19940018698 U KR19940018698 U KR 19940018698U KR 200168055 Y1 KR200168055 Y1 KR 200168055Y1
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- combustion chamber
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- internal combustion
- intake pipe
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- 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
- F02B31/08—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air inlets
- F02B31/085—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air inlets having two inlet valves
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- 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/48—Tumble motion in gas movement in cylinder
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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
연소실로 유입되는 공기가 강한 스월을 일으키도록 하여 성층연소와 희박연소를 가능하게 하여 연비를 향상시킬 수 있도록 하기 위하여, 흡기포트(14, 16)는 실린더 헤드(4)의 저면에 대하여 수평하게 뚫려지며, 연소실(18)의 벽면에 대하여 접선방향으로 위치하여 흡기의 흐름이 원주방향으로 방향성을 갖도록 하는 내연기관의 연소실 스월 발생구조.The intake ports 14 and 16 are drilled horizontally with respect to the bottom of the cylinder head 4 so that the air flowing into the combustion chamber causes strong swirl to enable stratified combustion and lean combustion to improve fuel efficiency. And a combustion chamber swirl generation structure of an internal combustion engine positioned in a tangential direction with respect to the wall surface of the combustion chamber (18) so that the flow of intake air is directed in the circumferential direction.
Description
제1도는 본 고안에 의한 내연기관의 일부 외관 사시도,1 is a perspective view of a part of the internal combustion engine according to the present invention,
제2도는 본 고안에 의한 흡기관의 상태를 보여주는 측단면도,Figure 2 is a side cross-sectional view showing a state of the intake pipe according to the present invention,
제3도는 본 고안에 의한 연소실에 스월이 발생되는 것을 설명하기 위한 도면이다.3 is a view for explaining the generation of swirl in the combustion chamber according to the present invention.
〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
2 : 실린더 블럭 4 : 실린더 헤드2: cylinder block 4: cylinder head
6, 8 : 흡기관 12 : 서지탱크6, 8: intake pipe 12: surge tank
14, 16 : 흡기포트 18 : 연소실14, 16: intake port 18: combustion chamber
20 : 인젝터 22 : 점화 플러그20: injector 22: spark plug
본 고안은 내연기관의 연소실 스월 발생구조에 관한 것으로서, 보다 상세하게는 연소실로 유입되는 혼합기가 수평 스월을 강하게 일으키도록 하여 연소효율을 증대시킴과 아울러 연비를 향상시킬 수 있는 스월발생구조에 관한 것이다.The present invention relates to a combustion chamber swirl generating structure of an internal combustion engine, and more particularly, to a swirl generating structure capable of increasing the combustion efficiency and improving fuel efficiency by causing a horizontal swirl to be strongly introduced into the combustion chamber. .
내연기관의 흡기계통은 흡기가 연소실까지 유입되는 과정에서 유동저항을 최소로 하는 것이 요구되고 있으며, 또 저속에서는 흡기의 맥동효과를 얻는 것이며 고속에서는 빠른 속도로 흡기가 유입될 수 있도록 하는 것이다.The intake cylinder of the internal combustion engine is required to minimize the flow resistance in the process of entering the intake air into the combustion chamber, and to obtain the pulsation effect of the intake at low speed and to allow the intake air to flow at high speed at high speed.
이러한 조건들은 흡기관의 형상을 적절히 변경하는 것으로 가능하다.These conditions are possible by appropriately changing the shape of the intake pipe.
예컨데, 저속용 흡기관과 고속용 흡기관을 하나의 연소실에 공통적으로 설치하고, 특히 고속용 흡기관에 엔진의 부압이나 전자제어 유닛에 의해 제어되는 밸브를 설치하여 저속에서는 저속 흡기관만을 통하여 흐르도록 하고, 고속에서는 고속용 흡기관만을 통하여 흐르도록 하는 것이다.For example, a low speed intake pipe and a high speed intake pipe are commonly installed in one combustion chamber, and in particular, the high speed intake pipe is provided with a valve controlled by an engine negative pressure or an electronic control unit, and flows through only the low speed intake pipe at low speed. At high speeds, the air flows through only the intake pipe for high speeds.
이러한 흡기관은 저속용 흡기관의 길이가 고속용 흡기관의 길이에 비하여 길게 형성된다.Such an intake pipe is formed such that the length of the low speed intake pipe is longer than that of the high speed intake pipe.
그리고 흡기관을 연소실 입구측에서 2개의 통로로 나누어 저속과 고속포트로 구분하고, 특히 저속포트의 내측면에 나선형상의 골을 형성하여 흡기가 이곳을 통하면서 와류를 일으키면서 연소실로 유입되도록 하는 것이다.In addition, the intake pipe is divided into two passages at the inlet side of the combustion chamber, and is divided into a low speed and a high speed port. In particular, a spiral valley is formed on the inner side of the low speed port so that the intake air enters the combustion chamber while causing the vortex through the place. .
그러나 1개의 실린더에 2개의 흡기밸브와 1개의 배기밸브을 채택하고 있는 엔진에서는 2개의 흡기포트가 동일한 방향에서 흡기가 유입될 수 있는 구조로 되어 있기 때문에 연소실내로 유입되는 공기의 스월이 상쇄되는 문제점이 있다.However, in an engine employing two intake valves and one exhaust valve in one cylinder, the two intake ports have a structure in which intake air can flow in the same direction, so that the swirl of air flowing into the combustion chamber is canceled out. There is this.
본 고안은 상기한 바와 같은 종래 기술의 문제점을 해소하기 위하여 안출된 것으로서, 본 고안의 목적은 2개의 흡기포트로 유입되는 혼합기가 스월을 더욱 증대시킬 수 있도록 하는 내연기관의 연소실 스월발생구조를 제공하는데 있다.The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to provide a combustion chamber swirl generation structure of the internal combustion engine to further increase the swirl introduced into the two intake ports It is.
상기한 바와 같은 본 고안의 목적을 실현하기 위하여, 피스톤이 승강하는 실린더를 보유하는 실린더 블럭과, 이 실린더 블럭의 상측에 결합되며 서지탱크의 공기를 연소실로 공급하는 흡기관과 연결되는 흡기포트를 보유하는 실린더 헤드를 포함하여 이루어지는 내연기관의 흡기 시스템에 있어서, 상기한 흡기포트는 실린더 헤드의 저면에 대하여 수평하게 뚫려지며, 연소실의 벽면에 대하여 접선방향으로 위치하여 흡기의 흐름이 원주방향으로 방향성을 갖도록 하는 내연기관의 연소실 스월 발생구조를 제공한다.In order to realize the object of the present invention as described above, the cylinder block for holding the cylinder in which the piston is elevated, and the intake port coupled to the upper side of the cylinder block and connected to the intake pipe for supplying air from the surge tank to the combustion chamber In the intake system of an internal combustion engine comprising a retaining cylinder head, the intake port is opened horizontally with respect to the bottom surface of the cylinder head, and is located tangentially to the wall surface of the combustion chamber so that the flow of intake air is directed in the circumferential direction. A combustion chamber swirl generating structure of an internal combustion engine is provided.
상기한 흡기포트는 연소실의 상측에 대각선 방향으로 배열됨을 특징으로 하는 내연기관의 연소실 스월 발생구조를 제공한다.The intake port is provided in the combustion chamber swirl generating structure of the internal combustion engine, characterized in that arranged in a diagonal direction above the combustion chamber.
이하 본 고안의 바람직한 실시예를 첨부한 도면에 따라 더욱 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
제1도는 본 고안에 의한 내연기관의 일부 사시도로서, 실린더 블럭(2)의 상부에 위치하는 실린더 헤드(4)에는 2개의 흡기관(6, 8)가 1개의 배기관(10)이 설치되어 있음을 보여준다.1 is a partial perspective view of an internal combustion engine according to the present invention, in which two intake pipes 6 and 8 are provided with one exhaust pipe 10 in a cylinder head 4 located above the cylinder block 2. Shows.
상기한 흡기관(6, 8)은 각각 스로틀 바디를 통하여 유입되는 공기를 각각의 실리더로 분배하는 서지탱크(12)와 연통하고 있다.The intake pipes 6 and 8 described above communicate with the surge tank 12 for distributing air introduced through the throttle body to the respective cylinders.
본 실시예에서 흡기관(6)은 실린더 헤드(4)의 상측으로 통과하여 반대측에서 연소실로 연결되고 있다.In this embodiment, the intake pipe 6 passes upward of the cylinder head 4 and is connected to the combustion chamber on the opposite side.
그리고 다른 하나의 흡기관(8)은 서지탱크(12)에서 아래측으로 연장하여 실린더 블럭(2)의 위치까지 내려온 후 다시 상승하는 커브로 연소실과 연통하고 있다.The other intake pipe 8 extends downward from the surge tank 12 to the position of the cylinder block 2 and communicates with the combustion chamber in a rising curve.
이러한 구조는 흡기관(6, 8)의 길이를 동일하게 하여 흡기의 흐름속도나 맥동현상등이 동일하게 이루어지도록 하기 위한 것으로서, 흡기관이 서로 대각선 방향으로 연소실과 연결되는 구조에 적용될 수 있다.This structure is to make the intake pipe (6, 8) the same length so that the flow rate or pulsation of the intake is the same, it can be applied to the structure in which the intake pipe is connected to the combustion chamber in a diagonal direction with each other.
그리고 배기관(10)은 엔진의 전방측에서 연소실과 연결되어 실린더 블럭(2)의 아래측으로 통과하도록 구성되고 있다.The exhaust pipe 10 is connected to the combustion chamber at the front side of the engine and is configured to pass through the lower side of the cylinder block 2.
제2도는 본 고안에 관련하는 연소실의 측단면도로서, 실린더 헤드(4)에 뚫려지는 흡기포트(14, 16)는 실린더 헤드의 저면에 대하여 대략 수평하게 형성되고 있으며, 흡기포트(14)는 흡기관(6)과 연결되며, 또다른 흡기포트(16)는 흡기관(8)과 연결된다.2 is a side cross-sectional view of the combustion chamber according to the present invention, wherein the intake ports 14 and 16 which are opened in the cylinder head 4 are formed substantially horizontally with respect to the bottom surface of the cylinder head, and the intake port 14 It is connected to the engine 6, another intake port 16 is connected to the intake pipe (8).
그리고 연소실(18)내로 연료를 분사하는 인젝터(20)는 상기한 흡기포트(14)에만 설치된다.The injector 20 for injecting fuel into the combustion chamber 18 is provided only in the intake port 14 described above.
즉 제3도에 도시한 바와 같이 연소실(18)을 상방에서 볼때 흡기포트(14)와 또다른 흡기포트(16)는 대각선 방향으로 배치되고 있으며, 점화 플러그(22)는 흡기포트(14)측에 위치하여 이곳을 통하여 유입되는 혼합기에 스파크를 일으킬 수 있도록 되어 있다.That is, as shown in FIG. 3, when the combustion chamber 18 is viewed from above, the intake port 14 and another intake port 16 are arranged in a diagonal direction, and the spark plug 22 has the intake port 14 side. It is located in the center of the building and can spark sparks from the mixer flowing through it.
특히 본 고안에 의한 흡기관(6, 8)은 연소실(18)의 내측벽면을 따라 공기가 유입될 수 있도록 각각 연소실(18)의 내측벽면을 향하는 자세로 위치하고 있다.In particular, the intake pipes 6 and 8 according to the present invention are positioned to face the inner wall surface of the combustion chamber 18 so that air can flow along the inner wall surface of the combustion chamber 18.
이와 같이 이루어지는 본 고안의 스월발생구조는, 엔진이 시동되어 엔진의 부압으로 흡기가 이루어지기 시작하면 도시하고 있지 않으나 흡기밸브가 열리면서 연소실(18)내로 공기가 유입될 수 있도록 된다.The swirl generating structure of the present invention, which is configured as described above, is not shown when the engine is started and intake is started by negative pressure of the engine, but air is introduced into the combustion chamber 18 while the intake valve is opened.
이때 유입되는 공기에 인젝터(20)로 부터 분사되는 연료가 혼합되어 연소실내에서 스월을 일으키며 강한 와류를 일으키게 되는데 와류발생은 실질적으로 다음과 같은 구조적 특징에 의해 이루어진다.In this case, the fuel injected from the injector 20 is mixed with the incoming air, causing swirl in the combustion chamber, and causing strong vortices. Vortex generation is substantially achieved by the following structural features.
즉, 본 고안의 흡기관(6)은 연소실(18)의 벽면을 향하여 위치한 흡기포트(14)와 연결되고 있기 때문에 흡기관(6)을 따라 유입되는 공기는 연소실(18)로 유입되면서 연소실의 벽면에 대하여 접선방향으로 흐르게 되므로 이 공기는 원주방향으로 흐름성을 갖게 된다.That is, since the intake pipe 6 of the present invention is connected to the intake port 14 located toward the wall surface of the combustion chamber 18, the air flowing along the intake pipe 6 flows into the combustion chamber 18 while the This air flows in the circumferential direction because it flows tangentially with respect to the wall surface.
따라서 연소실(18)의 벽면을 따라 원주방향으로 회전을 하면서 엔진의 부아에 의해 연소실내로 들어가게 된다.Therefore, while rotating in the circumferential direction along the wall surface of the combustion chamber 18, it is entered into the combustion chamber by the bore of the engine.
이때 또다른 흡기관(8)을 통하여 공기가 유입되는데, 이 흡기관도 연소실의 벽면에 대하여 접선방향으로 설치되어 있기 때문에 이 흡기관을 통하여 유입되는 공기는 흡기관(6)을 통하여 유입된 공기의 흐름에 대하여 더욱 강한 와류를 일으키게 한다.At this time, air is introduced through another intake pipe 8, and since the air intake pipe is also installed in a tangential direction to the wall surface of the combustion chamber, the air introduced through the intake pipe is air introduced through the intake pipe 6. It causes a stronger vortex for the flow of.
이것은 2개의 흡기관(6, 8)이 대각선 방향으로 위치하고 있기 때문에 실현가능하게 되는 것으로서, 이러한 상태에서 인젝터(20)로 부터 분사되는 연료는 하나의 흡기관(6)으로 유입되는 공기와 혼합을 시작하게 되므로 용이하게 혼합이 이루어진다.This is realized because the two intake pipes 6 and 8 are located in a diagonal direction, and the fuel injected from the injector 20 in this state mixes with the air flowing into the intake pipe 6. Since it starts, mixing is easy.
이와 같이 본 고안은 흡기의 흐름을 강한 스월로 변화시키면서 흡기의 충전효율을 높이고 이러한 상태의 흐름에 연료를 분사하게 되므로 희박연소를 가능하게 한다.As such, the present invention improves the charging efficiency of the intake air while changing the flow of the intake air to a strong swirl, and thus, the fuel is injected into the flow in this state, thereby enabling lean combustion.
따라서 연비를 절감할 수 있으면서도 2개소에서 공기의 스월을 발생시키게 되므로 혼합기의 성층연소가 이루어져 강한 폭발력을 얻을 수 있다.Therefore, the fuel economy can be reduced, but the swirl of the air is generated in two places, so that the stratified combustion of the mixer is achieved, and a strong explosive force can be obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940018698U KR200168055Y1 (en) | 1994-07-26 | 1994-07-26 | Combustion chamber swirl generation structure of internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
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| KR2019940018698U KR200168055Y1 (en) | 1994-07-26 | 1994-07-26 | Combustion chamber swirl generation structure of internal combustion engine |
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| Publication Number | Publication Date |
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| KR960005440U KR960005440U (en) | 1996-02-16 |
| KR200168055Y1 true KR200168055Y1 (en) | 2000-03-02 |
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