KR200173919Y1 - Piston for directly injected engines - Google Patents
Piston for directly injected engines Download PDFInfo
- Publication number
- KR200173919Y1 KR200173919Y1 KR2019960053995U KR19960053995U KR200173919Y1 KR 200173919 Y1 KR200173919 Y1 KR 200173919Y1 KR 2019960053995 U KR2019960053995 U KR 2019960053995U KR 19960053995 U KR19960053995 U KR 19960053995U KR 200173919 Y1 KR200173919 Y1 KR 200173919Y1
- Authority
- KR
- South Korea
- Prior art keywords
- combustion chamber
- bowl
- piston
- type combustion
- direct injection
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
-
- 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
- F02F3/00—Pistons
- F02F3/26—Pistons having combustion chamber in piston head
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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)
Abstract
본 고안의 목적은 분사된 연료가 성층화 되어 스파크 플러그 주변에 농후하게 형성되도록 하므로써 초희박 연소를 가능케하는 직접 분사 엔진용 피스톤을 제공하는데 있다.It is an object of the present invention to provide a piston for a direct injection engine that enables ultra-lean combustion by allowing the injected fuel to be stratified and formed around the spark plug.
상기한 목적을 달성하기 위하여 본 고안은 인젝터를 통하여 연소실에 연료를 직접 분사하는 직접 분사 엔진에 있어서;In order to achieve the above object, the present invention provides a direct injection engine for directly injecting fuel into a combustion chamber through an injector;
피스톤 상면의 크라운부의 중앙이 상부로 경사지게 돌출하고 있으며 우측으로 들어간 연료가 모여 스파크 플러그 주변으로 유도하는 평면에서 보아 통배추 형상을 갖는 제 1 보울형 연소실과;A first bowl-type combustion chamber in which a center of the upper portion of the piston protrudes obliquely upward and has a tubular cabbage shape in a plane where fuel entering the right side is collected and guided around the spark plug;
그 제 1 보울형 연소실에 대향되는 측에 평면에서 보아 대략 C자형의 제 2 보울형 연소실이 형성되어 있는 것을 특징으로 한다.A substantially C-shaped second bowl-type combustion chamber is formed on the side opposite to the first bowl-type combustion chamber in plan view.
Description
본 고안은 직접 분사 엔진용 피스톤에 관한 것이다.The present invention relates to a piston for a direct injection engine.
직접 분사 엔진은 제3도와 제4도에 도시하는 것과 같이 인젝터(10)를 통해 연소실(11)에 직접 연료를 분사하여 흡입된 공기와 혼합된 후 연소토록 하는 엔진으로서 혼합기의 와류를 촉진하기 위하여 피스톤(12) 상부면에 보울형 연소실(13)이 형성되어 있다.The direct injection engine is an engine which injects fuel directly into the combustion chamber 11 through the injector 10 and mixes it with the sucked air, as shown in FIG. 3 and FIG. 4, to promote combustion of the mixer. The bowl type combustion chamber 13 is formed in the piston 12 upper surface.
그러나 상기한 구조의 피스톤(12)은 인젝터(10)에서 분사된 연료를 피스톤(12)이 잘 받을 수 없으며 보울형 연소실(13)에 의해 와류로 형성되는 혼합기가 스파크 플러그(14) 주위에 농후하게 형성되지 않기 때문에 초희박 연소(공연비 40:1)시 화염 전파가 잘 이루어지지 않는 문제점이 있었다.However, the piston 12 having the above-described structure is not well received by the piston 12 by the fuel injected from the injector 10, and a mixer formed in the vortex by the bowl-type combustion chamber 13 is concentrated around the spark plug 14. There was a problem that the flame propagation is not well made during ultra-thin combustion (air ratio 40: 1) because it is not formed.
이에 본 고안은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는 바는 분사된 연료가 성층화 되어 스파크플러그 주변에 농후하게 형성되도록 하므로써 초희박 연소를 가능케하는 직접 분사 엔진용 피스톤을 제공하는데 있다.The present invention has been proposed in view of the above problems, and its object is to provide a piston for a direct injection engine that enables ultra-lean combustion by allowing the injected fuel to be stratified and formed around the spark plug.
상기한 목적을 달성하기 위하여 본 고안의 직접 분사 엔진용 피스톤은 인젝터를 통하여 연소실에 연료를 직접 분사하는직접 분사 엔진에 있어서;In order to achieve the above object, a piston for a direct injection engine of the present invention includes a direct injection engine for directly injecting fuel into a combustion chamber through an injector;
크라운부의 중앙이 상부로 경사지게 돌출하고 있으며, 우측으로 들어간 연료가 모여 스파크 플러그 주변으로 유도하는 평면에서 보아 통배추 형상을 갖는 제 1 보울형 연소실과;A first bowl-type combustion chamber protruding obliquely upward from the center of the crown portion and having a tubular cabbage shape in a plane where fuel entering the right side is collected and guided around the spark plug;
상기 제 1 보울형 연소실에 대향되는 측에 평면에서 보아 대략 C자형의 제 2 보울형 연소실이 형성되어 있는 것을 특징으로 한다.A substantially C-shaped second bowl-type combustion chamber is formed on the side opposite to the first bowl-type combustion chamber in plan view.
제1도는 본 고안에 의한 직접 분사 엔진용 피스톤을 나타내는 도면.1 is a view showing a piston for a direct injection engine according to the present invention.
제2도는 동상 피스톤의 평면도.2 is a plan view of the in-phase piston.
제3도와 제4도는 종래 기술.3 and 4 are prior art.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 피스톤 2 : 인젝터1: piston 2: injector
3 : 연소실 4 : 스파크 플러그3: combustion chamber 4: spark plug
5 : 크라운부 6 : 제 1 보울형 연소실5: crown portion 6: first bowl-type combustion chamber
7 : 제 2 보울형 연소실7: second bowl-type combustion chamber
이하 본 고안의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings the configuration and operation of the present invention.
제1도는 본 고안에 의한 직접 분사 엔진용 피스톤을 나타내는 도면이며, 제2도는 동상 피스톤의 평면도이다.1 is a view showing a piston for a direct injection engine according to the present invention, Figure 2 is a plan view of the in-phase piston.
도면중 부호 1은 본 발명의 피스톤이며 부호 2는 연소실(3)내에 연료를 직접 분사하는 인젝터이며 부호 4는 혼합기를 점화하는 스파크 플러그이다.In the figure, reference numeral 1 is a piston of the present invention, numeral 2 is an injector for directly injecting fuel into the combustion chamber 3, and numeral 4 is a spark plug for igniting the mixer.
상기 피스톤(1)의 크라운부(5)는 그의 중앙부가 상부로 돌출하여 있으며 정면에서 보아 양측을 경사지게 절삭하므로써 삼각형 형상으로 돌출하여 있다.The crown portion 5 of the piston 1 has its central portion protruding upwards and protrudes in a triangular shape by obliquely cutting both sides when viewed from the front.
그리고 상기 크라운부(5)의 일측에는 평면에서 보아 대략 통배추 형상()을 갖는 제 1 보울형 연소실(6)의 형성되어 있으며 그와 대향되는 타측에는 제 1 보울형 연소실(6)의 내측단부 주위를 감싸는 형태로 평면에서 보아 대략 C자 형상의 제 2보울형 연소실(7)이 형성되어 있다.One side of the crown portion 5 is formed with a first bowl-type combustion chamber 6 having a substantially cylindrical cabbage shape in plan view, and on the other side opposite to the inner end of the first bowl-type combustion chamber 6. The second bowl-type combustion chamber 7 having a substantially C-shape is formed in a planar view.
이에 따라 피스톤(1)의 우측에 형성된 제 1 보울형 연소실(6)에 들어간 연료는 스파크 플러그(4) 주위로 유도되어 스파크플러그(4) 주위에는 농후한 혼합기가 위치하게 되고 좌측의 제 2 보울형 연소실(7)은 연료가 상대적으로 희박한 공기가위치하게 되는 것이다.Accordingly, the fuel entering the first bowl-type combustion chamber 6 formed on the right side of the piston 1 is guided around the spark plug 4 so that a rich mixer is located around the spark plug 4 and the second bowl on the left side is located. In the type combustion chamber 7, air in which the fuel is relatively thin is located.
이상과 같은 본 고안에 의하면 스파크 플러그 주변에 농후한 혼합기를 유도하는 제 1 보울형 연소실과 희박한 혼합기가 위치하는 제 2 보울형 연소실이 피스톤의 크라운부에 형성되어 있어 초기 화염 전파 능력이 향상되므로써 초희박 연소가가능하여 연비를 좋게하고 배기가스를 저감하게 되는 효과가 있다.According to the present invention as described above, the first bowl-type combustion chamber inducing a rich mixer around the spark plug and the second bowl-type combustion chamber in which the lean mixer is located are formed in the crown of the piston, thereby improving the initial flame propagation ability. Since lean combustion is possible, there is an effect of improving fuel efficiency and reducing exhaust gas.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960053995U KR200173919Y1 (en) | 1996-12-23 | 1996-12-23 | Piston for directly injected engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960053995U KR200173919Y1 (en) | 1996-12-23 | 1996-12-23 | Piston for directly injected engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980040914U KR19980040914U (en) | 1998-09-15 |
| KR200173919Y1 true KR200173919Y1 (en) | 2000-04-01 |
Family
ID=19481806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960053995U KR200173919Y1 (en) | 1996-12-23 | 1996-12-23 | Piston for directly injected engines |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200173919Y1 (en) |
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1996
- 1996-12-23 KR KR2019960053995U patent/KR200173919Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR19980040914U (en) | 1998-09-15 |
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