KR200286773Y1 - LPG Liquid Injector - Google Patents
LPG Liquid Injector Download PDFInfo
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- KR200286773Y1 KR200286773Y1 KR2020010031554U KR20010031554U KR200286773Y1 KR 200286773 Y1 KR200286773 Y1 KR 200286773Y1 KR 2020010031554 U KR2020010031554 U KR 2020010031554U KR 20010031554 U KR20010031554 U KR 20010031554U KR 200286773 Y1 KR200286773 Y1 KR 200286773Y1
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Abstract
이 고안은 내연기관에서 액화석유가스(LPG)를 액체상태로 분사할 때, 인젝터(injector) 출구에서 발생되는 공기 중의 수분 및 연료의 응결(icing)현상을 억제하기 위한 응결방지장치와 응결방지 출구를 구비한 인젝터에 관한 것으로써, 적정한 LPG 분사량 제어가 가능하다.The present invention provides a condensation preventing device and a condensation preventing outlet for suppressing icing of water and fuel in the air generated from an injector outlet when injecting liquefied petroleum gas (LPG) into a liquid state in an internal combustion engine. The present invention relates to an injector equipped with an appropriate LPG injection amount control.
Description
LPG를 사용하는 내연기관의 다점분사(MPI) 또는 실린더 직접분사(DI) 연료분사 장치들에서는 LPG 연료가 액체상태로 직접 흡입공기 중에 분사된다. 인젝터 출구에서는 분사된 LPG가 급속하게 기화되면서 다량의 기화열을 흡수하고, 이로 인하여 공기 중의 수분 또는 LPG가 인젝터의 출구에 응결-부착된다. 이러한 응결현상은 LPG 인젝터에서 액체분사를 방해하므로, 내연기관의 대기공해방지에 관한 핵심기술인 정밀한 연료량 제어를 불가능하게 만든다.In multi-point injection (MPI) or cylinder direct injection (DI) fuel injection devices of an internal combustion engine using LPG, LPG fuel is injected directly into the intake air in the liquid state. At the injector outlet, the injected LPG vaporizes rapidly, absorbing a large amount of heat of vaporization, thereby condensing-attaching water in the air or LPG to the outlet of the injector. This condensation hinders liquid injection in LPG injectors, making precise fuel level control, a key technology for preventing air pollution in internal combustion engines.
이 고안에서는 LPG를 액체상태로 분사하는 인젝터(injector)에서 기화열 흡수로 인해 발생되는 공기 중의 수분 및 연료의 응결(icing)현상을 억제하여, 적정한 LPG 액체의 분사량 제어가 가능하도록 하기 위한 응결방지장치 및 응결방지 출구를 구비한 인젝터의 설계 및 제조에 관한 기술이다.In this design, a condensation preventing device for controlling the injection amount of LPG liquid is possible by suppressing the icing of water and fuel in the air caused by absorption of vaporization heat in the injector injecting LPG into the liquid state. And a technique related to the design and manufacture of an injector having a condensation preventing outlet.
도 1은 LPG 액체 인젝터가 설치된 내연기관의 연료분사장치이다.1 is a fuel injection device of an internal combustion engine provided with an LPG liquid injector.
도 2는 LPG 액체 인젝터의 응결방지장치(실시예-1)이다.2 is a condensation preventing apparatus (Example-1) of an LPG liquid injector.
도 3은 LPG 액체 인젝터의 응결방지장치(실시예-2)이다.3 is a condensation preventing apparatus (Example-2) of an LPG liquid injector.
도 4는 LPG 액체 인젝터의 응결방지장치(실시예-3)이다.4 is a condensation preventing device (Example-3) of an LPG liquid injector.
도 5는 분사출구에 응결방지장치가 설치된 일체형 LPG 액체 인젝터이다.5 is an integrated LPG liquid injector having a condensation preventing device installed at an injection outlet.
도 1은 이 고안에서 고안된 응결방지장치를 구비한 인젝터가 설치된 LPG 내연기관의 연료분사장치를 나타내고 있다. 주요부분은 응결방지장치(2)를 구비한 LPG 인젝터(1), 흡기다기관(3), 흡기밸브(4)로 구성되어 있으며, 인젝터에서 분사된 LPG와 공기가 혼합되면서 실린더로 유입된다. 응결방지장치(2)는 인젝터(1)의 출구에 설치되며, 분사시에 LPG 액체가 인젝터 출구에서 바로 대기 중에 노출되어 기화되지 않고, LPG를 흡기다기관 내부까지 유인되는 구조로 되어 있다. 응결방지 장치(2)에서의 연료 분사방향은 인젝터의 연료분사방향과 동일한 연장선상에 있다.1 shows the fuel injection value of an LPG internal combustion engine equipped with an injector equipped with a condensation preventing device designed in this design. The main part is composed of an LPG injector 1 having an anti-condensation device 2, an intake manifold 3, and an intake valve 4, and the LPG injected from the injector is mixed with air and introduced into the cylinder. The condensation preventing device 2 is installed at the outlet of the injector 1, and has a structure in which LPG liquid is exposed to the atmosphere at the outlet of the injector at the time of injection and is not vaporized, and attracts LPG to the inside of the intake manifold. The fuel injection direction in the condensation preventing device 2 is on the same extension line as the fuel injection direction of the injector.
도 2는 인젝터 출구에서 응결현상이 발생되지 않도록 제조된 응결방지장치(실시예-1)를 보여주고 있다. 분사구(1)는 LPG가 액체로 분사되는 출구이다. 응결방지장치는 단열효과가 우수한 고분자재료(플라스틱)로 제조되며, 고정구(2)는 응결방지장치가 인젝터 출구에 삽입되는 구조로 되어 있다.2 shows a condensation preventing device (Example-1) manufactured so that condensation does not occur at the injector outlet. The injection port 1 is an outlet through which LPG is injected into the liquid. The condensation preventing device is made of a polymer material (plastic) having excellent thermal insulation effect, and the fastener 2 has a structure in which the condensation preventing device is inserted into the injector outlet.
도 3은 인젝터 출구에서 응결현상이 발생되지 않도록 제조된 응결방지장치(실시예-2)를 보여주고 있다. 분사구(1)는 LPG가 액체로 분사되는 출구이다. 응결방지장치는 단열효과가 우수한 고분자재료(플라스틱)로 제조되며, 고정구(2)는 응결방지장치가 인젝터의 출구에 삽입되도록 하는 구조로 되어 있다. 단열효과를 향상시키기 위하여 원추형 분사구에 빈 공간인 단열홈(3)을 구비하고 있으며, 고정구와 분사구가 일체로 제조된 것이다.3 shows a condensation preventing device (Example-2) manufactured to prevent condensation from occurring at the injector outlet. The injection port 1 is an outlet through which LPG is injected into the liquid. The condensation preventing device is made of a polymer material (plastic) having excellent thermal insulation effect, and the fastener 2 has a structure such that the condensation preventing device is inserted into the outlet of the injector. In order to improve the thermal insulation effect is provided with a thermal insulation groove (3) which is a hollow space in the conical injection hole, the fixture and the injection hole is manufactured integrally.
도 4는 인젝터 출구에서 응결현상이 발생되지 않도록 제조된 응결방지장치(예-3)를 보여주고 있다. 분사구(1)는 LPG가 액체로 분사되는 출구이다. 응결방지장치는 단열효과가 우수한 고분자재료(플라스틱)로 제조되며, 고정구(2)는 응결방지장치가 인젝터의 출구에 삽입되도록 하는 구조로 되어 있다. 단열효과를 향상시키기 위하여 분사구(1)와 고정구(2)사이에 빈 공간인 단열홈(3)을 구비한 것이며, 분사구(1)와 고정구(2)가 별도로 제조되어 조립된 것이다.4 shows a condensation preventing device (Example-3) manufactured to prevent condensation from occurring at the injector outlet. The injection port 1 is an outlet through which LPG is injected into the liquid. The condensation preventing device is made of a polymer material (plastic) having excellent thermal insulation effect, and the fastener 2 has a structure such that the condensation preventing device is inserted into the outlet of the injector. In order to improve the thermal insulation effect is provided with an insulating groove (3), which is an empty space between the injection port (1) and the fixture (2), the injection port (1) and the fixture (2) is manufactured and assembled separately.
도 5는 인젝더(1)의 LPG 분사구(3)가 도 2, 도 3 및 도 4에서 설명된 응결방지장치(2) 구조 및 특징을 구비한 것으로, 인젝터와 일체로 설계-제조된 LPG 액체분사 인젝터이다.FIG. 5 shows that the LPG injection port 3 of the injector 1 has the structure and features of the condensation preventing device 2 described in FIGS. 2, 3 and 4, and is designed and manufactured integrally with the injector. Injection injector.
도 2, 도 3, 도 4 및 도 5의 응결방지장치 재질은 고분자(플라스틱)의 단열재료이며, 분사구의 끝은 원추형이고, 원추각도(A)는 180도 미만으로 설계-제조된다. 따라서 수분 또는 LPG 등이 소량으로 응결되어 부착되더라도 분사구를 방해하는 일이 극히 적어지며, 고속의 흡입공기에 의해 순조롭게 제거되는 구조로 되어 있다.2, 3, 4 and 5, the condensation preventing device material is a polymer (plastic) insulation material, the tip of the injection hole is conical, and the cone angle (A) is designed and manufactured to less than 180 degrees. Therefore, even if moisture or LPG is condensed and attached in a small amount, it is extremely difficult to obstruct the injection hole, and the structure is smoothly removed by high-speed intake air.
LPG 액체 분사장치의 인젝터의 출구에서 LPG가 분사될 때, 인젝터 출구에서 발생되는 응결현상은 제거하므로 써, 정밀한 LPG 분사량 제어가 가능하다.When LPG is injected from the injector of the LPG liquid injector, the condensation generated at the injector outlet is eliminated, so that precise LPG injection amount control is possible.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020010031554U KR200286773Y1 (en) | 2001-10-16 | 2001-10-16 | LPG Liquid Injector |
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| Application Number | Priority Date | Filing Date | Title |
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| KR2020010031554U KR200286773Y1 (en) | 2001-10-16 | 2001-10-16 | LPG Liquid Injector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101514719B1 (en) * | 2013-01-22 | 2015-05-04 | 주식회사 현대케피코 | nozzle tip of injector for lpi engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101514719B1 (en) * | 2013-01-22 | 2015-05-04 | 주식회사 현대케피코 | nozzle tip of injector for lpi engine |
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