KR200169926Y1 - Natural gas engine - Google Patents
Natural gas engine Download PDFInfo
- Publication number
- KR200169926Y1 KR200169926Y1 KR2019960056727U KR19960056727U KR200169926Y1 KR 200169926 Y1 KR200169926 Y1 KR 200169926Y1 KR 2019960056727 U KR2019960056727 U KR 2019960056727U KR 19960056727 U KR19960056727 U KR 19960056727U KR 200169926 Y1 KR200169926 Y1 KR 200169926Y1
- Authority
- KR
- South Korea
- Prior art keywords
- natural gas
- gas engine
- piston
- inclined surface
- combustion chamber
- 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
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/28—Other pistons with specially-shaped head
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
본 고안의 목적은 피스톤 상부면의 형상을 변경하여 고압축비를 실현하여 엔진 출력을 향상시키게 되는 천연가스엔진을 제공하는 데 있다.An object of the present invention is to provide a natural gas engine that improves the engine output by realizing a high compression ratio by changing the shape of the piston upper surface.
상기한 목적을 달성하기 위하여 본 고안은 흡기포트측은 경사지게 형성되고 배기포트측은 거의 수평에 가까운 경사를 갖는 실린더헤드를 상기 흡기포트측의 경사면과 더불어 직사각형 단면을 형성하도록 보울형 연소실이 형성되는 피스톤을 포함하는 천연가스엔진에 있어서,In order to achieve the above object, the present invention provides a piston having a bowl-type combustion chamber in which an intake port side is formed to be inclined and an exhaust port side is formed to have a rectangular cross section with an inclined surface of the intake port side. In a natural gas engine containing,
상기 피스톤은 보울형 연소실의 경사면으로부터 일직선으로 연장하여 상부로 돌출되는 크라운부를 구비하고 있음을 특징으로 한다.The piston has a crown portion which extends in a straight line from the inclined surface of the bowl-type combustion chamber and protrudes upward.
Description
본 고안은 천연가스엔진, 특히 그에 적합한 피스톤 구조에 관한 것이다.The present invention relates to a natural gas engine, in particular a piston structure suitable thereto.
종래 천연가스엔진은 제 2 도에 도시하는 것과 같이 흡기포트(2)가 형성되는 경사면(3)과 배기포트(4)가 형성된 거의 수평면에 가까운 경사면(5)을 갖는 실린더 헤드(1)와, 평면인 상부면(16)과 상기 경사면(3)과 더불어 단면이 직사각형 형상을 이루도록 파여지는 요홈 연소실(9)을 구비하는 피스톤(8)을 포함하여 구성되어 있다.The conventional natural gas engine has a cylinder head 1 having an inclined surface 3 on which an intake port 2 is formed and an inclined surface 5 near an almost horizontal surface on which an exhaust port 4 is formed, as shown in FIG. It comprises a piston (8) having a flat upper surface (16) and the inclined surface (3) together with a groove combustion chamber (9) which is cut into a rectangular cross section.
그러나 상기한 구조는 실린더헤드(1)의 연소실(15)이 지붕형으로 솟아있는데 비하여 피스톤(8)의 상부면(16)은 수평면이어서 연소실(15)의 용적이 크기 때문에 압축비가 낮고 따라서 엔진 출력이 낮은 문제점이 지적되고 있다.However, the structure described above has the combustion chamber 15 of the cylinder head 1 soared in a roof shape, whereas the upper surface 16 of the piston 8 is a horizontal plane, so the compression ratio is low because the volume of the combustion chamber 15 is large, so the engine output is low. Low problems are pointed out.
이에 본 고안은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는 바는Therefore, the present invention is proposed in view of the above problems, and its purpose is to
피스톤 상부면의 형상을 변경하여 고압축비를 실현하여 엔진 출력을 향상시키게 되는 천연가스엔진을 제공하는 데 있다.It is to provide a natural gas engine that improves the engine output by realizing a high compression ratio by changing the shape of the piston upper surface.
상기한 목적을 달성하기 위하여 본 고안은The present invention to achieve the above object is
흡기포트측은 경사지게 형성되고 배기포트측은 거의 수평에 가까운 경사를 갖는 실린더헤드를 상기 흡기포트측의 경사면과 더불어 직사각형 단면을 형성하도록 보울형 연소실이 형성되는 피스톤을 포함하는 천연가스엔진에 있어서,In a natural gas engine comprising a piston in which the intake port side is formed to be inclined and the exhaust port side is formed with a bowl-type combustion chamber so that a cylinder head having an inclination almost close to horizontal forms a rectangular cross section together with the inclined surface of the intake port side.
상기 피스톤은 보울형 연소실의 경사면으로부터 일직선으로 연장하여 상부로 돌출되는 크라운부를 구비하고 있음을 특징으로 한다.The piston has a crown portion which extends in a straight line from the inclined surface of the bowl-type combustion chamber and protrudes upward.
제1도는 본 고안의 의한 천연가스엔진을 나타내는 도면1 is a view showing a natural gas engine according to the present invention
제2도는 종래의 천연가스엔진을 나타내는 도면2 is a view showing a conventional natural gas engine
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 실린더헤드 2 : 흡기포트1: Cylinder head 2: Intake port
3 : 경사면 4 : 배기포트3: slope 4: exhaust port
5 : 경사면(수평에가까운) 6 : 수직부5: inclined surface (near horizontal) 6: vertical portion
7 : 스퀴쉬영역부 8 : 피스톤7: squish area portion 8: piston
9 : 보울형연소실 10 : 경사면9: bowl-type combustion chamber 10: inclined surface
11 : 크라운부 12 : 평면11 crown portion 12 plane
13 : 경사면13: slope
이하 본 고안의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings the configuration and operation of the present invention.
제 1 도는 본 고안에 의한 천연가스엔진을 나타내는 도면으로 도면에 있어서 부호 1은 실린더헤드이다.1 is a view showing a natural gas engine according to the present invention, in which 1 is a cylinder head.
상기 실린더헤드(1)는 흡기포트(2)가 형성된 경사면(3)과 배기포트(4)가 형성된 거의 수평에 가까운 경사면(5)과 수직부(6) 및 스퀴쉬(Sguesh)영역부(7)가 구비되며 상기 경사면(3)의 경사각은 약 25°를 유지한다.The cylinder head 1 includes an inclined surface 3 having an intake port 2 and an almost inclined surface 5 having an exhaust port 4, a vertical portion 6, and a squish region portion 7. ) Is provided and the inclination angle of the inclined surface 3 is maintained at about 25 degrees.
부면중 부호 8은 피스톤으로 피스톤(8)이 상사점에 위치하고 있을 때 상기 경사면(3)과 더불어 단면이 대략 직사각형을 이루도록 한쪽 모서리가 함몰된 형태의 보울형 연소실(9)이 형성되고 그 보울형 연소실(9)의 경사면(10, 경사면 3과 평행)으로부터 일직선으로 연장되어 상부로 돌출하는 크라운부(11)가 형성되어 있다.The reference numeral 8 of the part is a piston, and when the piston 8 is located at the top dead center, a bowl-type combustion chamber 9 having a shape in which one corner is recessed is formed along with the inclined surface 3 so as to form a substantially rectangular cross section. A crown portion 11 extending in a straight line from the inclined surface 10 (parallel to the inclined surface 3) of the combustion chamber 9 and protruding upward is formed.
이 크라운부(11)의 상면은 평면(12)으로 구성되고 수직부(6)와의 사이에 크레비스 볼륨(작은 틈새)이 형성되는 것을 방지하기 위해 배기포트측 단부가 경사면(13)으로 형성되어 있다.The upper surface of the crown portion 11 is composed of a flat surface 12, and an exhaust port side end portion is formed as an inclined surface 13 to prevent the crevis volume (small gap) from being formed between the vertical portion 6 and the vertical portion 6. .
이에따라 본 고안은 연소실(14)의 용적이 크라운부(11)의 돌출부피만큼 줄어들게 되어 그만큼 압축비가 증가되는 것이다.Accordingly, the present invention is to reduce the volume of the combustion chamber 14 by the projecting volume of the crown portion 11 is to increase the compression ratio by that amount.
이상과 같은 본 고안에 의하면 천연가스엔진의 피스톤의 상부를 보울형 연소실로부터 일직선으로 연장하여 돌출하는 크라운부를 설치하는 것에 의해서 압축비가 증가되어 연비가 개선되고 출력이 증대되는 효과가 있다.According to the present invention as described above by installing the crown portion protruding in a straight line extending from the bowl-type combustion chamber of the piston of the natural gas engine, the compression ratio is increased to improve the fuel economy and the output is increased.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960056727U KR200169926Y1 (en) | 1996-12-26 | 1996-12-26 | Natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960056727U KR200169926Y1 (en) | 1996-12-26 | 1996-12-26 | Natural gas engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980043608U KR19980043608U (en) | 1998-09-25 |
| KR200169926Y1 true KR200169926Y1 (en) | 2000-03-02 |
Family
ID=19483244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960056727U KR200169926Y1 (en) | 1996-12-26 | 1996-12-26 | Natural gas engine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200169926Y1 (en) |
-
1996
- 1996-12-26 KR KR2019960056727U patent/KR200169926Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980043608U (en) | 1998-09-25 |
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