KR970000187Y1 - Device for residual pressure of fuel injector in gasoline engine - Google Patents
Device for residual pressure of fuel injector in gasoline engine Download PDFInfo
- Publication number
- KR970000187Y1 KR970000187Y1 KR92027123U KR920027123U KR970000187Y1 KR 970000187 Y1 KR970000187 Y1 KR 970000187Y1 KR 92027123 U KR92027123 U KR 92027123U KR 920027123 U KR920027123 U KR 920027123U KR 970000187 Y1 KR970000187 Y1 KR 970000187Y1
- Authority
- KR
- South Korea
- Prior art keywords
- fuel
- residual pressure
- valve
- fuel injector
- housing
- 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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0077—Valve seat details
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안에 따른 연료분사기의 종단면도.1 is a longitudinal sectional view of a fuel injector according to the present invention.
제2도는 본 고안에 따른 잔압처리기구가 열려진 상태를 도시하는 횡단면도.2 is a cross-sectional view showing a state in which the residual pressure treatment mechanism according to the present invention is opened.
제3도는 본 고안에 따른 잔압처리기구가 닫혀진 상태를 도시하는 횡단면도이다.3 is a cross-sectional view showing a state in which the residual pressure treatment mechanism according to the present invention is closed.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 연소실 11 : 연료분사기10 combustion chamber 11 fuel injector
12 : 하우징(HOUSING) 13 : 밸브시트(VALVE SEAT)12: HOUSING 13: VALVE SEAT
14 : 관통공 15 : 스프링14: through hole 15: spring
16 : 밸브 17 : 혼합실16 valve 17 mixing chamber
18 : 배기통로 19 : 카바18: exhaust passage 19: cover
20 : 연료유입구 21 : 압축공기 유입구20: fuel inlet 21: compressed air inlet
22 : 스프링 23 : 분사밸브22: spring 23: injection valve
본 고안은 가솔린을 연료로 사용하는 2행정기관에 있어서, 압축공기를 이용한 연료분사기(AIR ASSISTED INJECTOR)용 잔압처리장치에 관한 것으로, 특히 연료분시기내의 혼합실의 잔압을 신속히 배기할 수 있도록 하여 정확한 연료계량을 하기 위한 것이다.The present invention relates to a residual pressure treatment apparatus for a fuel injection machine (AIR ASSISTED INJECTOR) using compressed air in a two-stroke engine that uses gasoline as a fuel, and in particular, to quickly exhaust the residual pressure of the mixing chamber in the fuel dispenser. It is for accurate fuel metering.
일반적으로 가솔린을 연료로 사용하는 2행정기관의 연료 계통에 있어서, 연료분사기 내에 계량된 연료를 압축공기를 이용하여 연소실내로 분사하는 연료분사기(AIR ASSISTED INJECTOR)가 사용되고 있다.In general, in a fuel system of a two-stroke engine that uses gasoline as a fuel, an AIR ASSISTED INJECTOR is used that injects fuel metered in the fuel injector into the combustion chamber using compressed air.
한편 기존의 연료분사기에 있어서는 상부에 연료유입구(20)과 압축공기 유입구(21)가 형성되어 있고 하부에는 스프링(22)에 의하여 지지되는 분사밸브(23)가 형성되어 있다.Meanwhile, in the conventional fuel injector, a fuel inlet 20 and a compressed air inlet 21 are formed at an upper portion thereof, and an injection valve 23 supported by a spring 22 is formed at a lower portion thereof.
이와같은 연료분사기에 있어서, 정확한 연료계량을 위해서는 혼합실과 연료라인의 압력차, 즉 P = Pfuel - Pmix 를 일정하게 유지하여야 한다.In such a fuel injector, the pressure difference between the mixing chamber and the fuel line, i.e., P = Pfuel-Pmix, must be kept constant for accurate fuel metering.
그러나 기존의 연료분사기에 있어서는 압축공기에 의하여 계량된 연료가 분사된 후, 일부 압축공기가 혼합실 내부에 남아있어, 혼합실과 연료라인의 압력차가 일정하게 유지되지 않으므로 다시 연료분사를 위하여 연료분사기 내에 연료를 계량할때 정확한 연료계량이 되지 않는 문제점이 있었다.However, in the conventional fuel injector, after the fuel metered by the compressed air is injected, some compressed air remains in the mixing chamber, and the pressure difference between the mixing chamber and the fuel line is not kept constant. There was a problem that the fuel is not accurate when weighing fuel.
본 고안은 이와같은 종래의 문제점을 해결하기 위한 것으로, 연료분사기의 내부에 형성되어 있는 혼합실의 잔압을 신속히 배기할 수 있도록 한 가솔린 엔진의 연료분사기용 잔압처리장치의 제공을 목적으로 한다.The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a residual pressure treatment apparatus for a fuel injector of a gasoline engine capable of quickly exhausting the residual pressure of a mixing chamber formed inside the fuel injection machine.
이와같은 본 고안의 목적은 상기 연료분사기의 일측면에 밸브하우징을 설치하고 상기 하우징의 내부에 밸브를 형성하여 상기 밸브의 일단은 하우징에 형성되어 있는 밸브시트에 접촉되도록 하고, 타단은 스프링에 의하여 지지되도록 하는 한편, 혼합실 내의 잔압이 배기될 수 있도록 상기 밸브의 내부에 배기통로를 형성하고, 상기 스프링이 지지될 수 있도록 상기 하우징의 외부에 카바를 설치함으로써 달성된다.The purpose of the present invention is to install a valve housing on one side of the fuel injector and to form a valve inside the housing so that one end of the valve is in contact with the valve seat formed in the housing, the other end by a spring While being supported, it is achieved by forming an exhaust passage inside the valve so that residual pressure in the mixing chamber can be exhausted, and installing a cover outside the housing so that the spring can be supported.
이하 본 고안의 구성을 첨부도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, the configuration of the present invention in detail based on the accompanying drawings.
즉, 본 고안은 제1도 및 제2도에 도시한 바와같이, 연소실(10)에 설치된 연료분사기(11)에 있어서 상기 연료분사기(11)의 일측면에 하우징(12)을 설치하고, 상기 하우징(12)의 내부에 밸브시트(13)가 있는 관통공(14)을 형성하여 일단은 상기 밸브시트(13)에 접촉되고, 타단은 스프링(15)에 의하여 지지되도록 밸브(16)를 설치하는 한편, 혼합실(17)내의 잔압이 대기중으로 배기될 수 있도록 상기 밸브(16)의 내부에 배기통로(18)을 형성하고, 상기 스프링(15)을 지지할 수 있도록 상기 하우징(12)의 외부에 카바(19)를 설치하여서 된 것이다.That is, according to the present invention, as shown in FIGS. 1 and 2, in the fuel injection machine 11 installed in the combustion chamber 10, the housing 12 is installed on one side of the fuel injection machine 11. A through hole 14 having a valve seat 13 is formed in the housing 12 so that one end thereof contacts the valve seat 13 and the other end is provided with a valve 16 so as to be supported by a spring 15. Meanwhile, an exhaust passage 18 is formed inside the valve 16 so that the residual pressure in the mixing chamber 17 can be exhausted to the atmosphere, and the housing 12 of the housing 12 is supported to support the spring 15. It is by installing a cover 19 on the outside.
또한, 상기 연료분사기(11)에 있어서, 연료계량시의 압력은 4바(BAR)이고, 압축공기의 압력은 8 내지 10바(BAR)이고, 상기 스프링(15)은 연료계량시의 압력부터 압축될 수 있도록 세팅되어 있다.In the fuel injector 11, the pressure at the time of fuel measurement is 4 bar (BAR), the pressure of the compressed air is 8 to 10 bar (BAR), and the spring 15 is from the pressure at the time of fuel measurement It is set to be compressed.
제2도는 연료분사기 내의 연료가 연소실내로 분사된 후의 상태를 도시하는 것으로, 상기 연소실(10)내로 연료가 분사되고 난 후 연료분사기(11)내에서 연료가 계량되기 전에 혼합실(17)내에 남아있는 잔압은 1-2바(BAR) 정도이므로 상기 스프링(15)이 밸브(16)를 밀어 상기 밸브(16)내부의 배기통로(18)가 대기중으로 개방되고 따라서 상기 혼합실(17)내의 잔압이 처리된다.2 shows the state after the fuel in the fuel injector is injected into the combustion chamber, and after the fuel is injected into the combustion chamber 10, the fuel is injected into the mixing chamber 17 before the fuel is metered in the fuel injector 11. The remaining residual pressure is about 1-2 bar (BAR), so the spring 15 pushes the valve 16 and the exhaust passage 18 inside the valve 16 opens to the atmosphere and thus the inside of the mixing chamber 17. The residual pressure is processed.
또한 제3도는 연료분사기 내로 연료가 계량되는 상태를 도시하는 것으로, 상기 밸브(16)는 연료계량 압력에 의하여 스프링(15)이 압축됨에 따라 뒤로 후퇴하고, 따라서 상기 밸브(16)내부에 형성되어 있는 배기통로(18)는 대기와 차단된다.3 also shows a state in which fuel is metered into the fuel injector, wherein the valve 16 is retracted back as the spring 15 is compressed by the fuel metering pressure, and thus is formed inside the valve 16. Exhaust passage 18 is blocked from the atmosphere.
이와같이 구성된 본 고안에 의하면, 연료분사기 내의 연료가 연소실로 분사된 후 혼합실 내에 남아있던 잔압이 신속히 제거되므로 혼합실과 연료라인의 압력차가 일정하게 유지되어 열료분사기내로 정확히 연료계량을 할 수 있는 효과가 생긴다.According to the present invention configured as described above, since the residual pressure remaining in the mixing chamber is rapidly removed after the fuel in the fuel injection is injected into the combustion chamber, the pressure difference between the mixing chamber and the fuel line is kept constant, so that the fuel metering can be accurately measured in the fuel injection. Occurs.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92027123U KR970000187Y1 (en) | 1992-12-29 | 1992-12-29 | Device for residual pressure of fuel injector in gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92027123U KR970000187Y1 (en) | 1992-12-29 | 1992-12-29 | Device for residual pressure of fuel injector in gasoline engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940016185U KR940016185U (en) | 1994-07-22 |
| KR970000187Y1 true KR970000187Y1 (en) | 1997-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR92027123U KR970000187Y1 (en) | 1992-12-29 | 1992-12-29 | Device for residual pressure of fuel injector in gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970000187Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7267501B2 (en) | 2004-11-23 | 2007-09-11 | Samsung Electronics Co., Ltd. | Image forming apparatus having a pickup roller for driving a discharge roller |
-
1992
- 1992-12-29 KR KR92027123U patent/KR970000187Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7267501B2 (en) | 2004-11-23 | 2007-09-11 | Samsung Electronics Co., Ltd. | Image forming apparatus having a pickup roller for driving a discharge roller |
Also Published As
| Publication number | Publication date |
|---|---|
| KR940016185U (en) | 1994-07-22 |
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