KR100692140B1 - A nozzle for lpi injecter - Google Patents

A nozzle for lpi injecter Download PDF

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Publication number
KR100692140B1
KR100692140B1 KR1020050080192A KR20050080192A KR100692140B1 KR 100692140 B1 KR100692140 B1 KR 100692140B1 KR 1020050080192 A KR1020050080192 A KR 1020050080192A KR 20050080192 A KR20050080192 A KR 20050080192A KR 100692140 B1 KR100692140 B1 KR 100692140B1
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South Korea
Prior art keywords
nozzle
teflon tube
fuel
injector
icing
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KR1020050080192A
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Korean (ko)
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KR20070028676A (en
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김현
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현대자동차주식회사
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Publication of KR20070028676A publication Critical patent/KR20070028676A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M53/00Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04Injectors with heating, cooling, or thermally-insulating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for

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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

A nozzle for an LPI injector is provided to prevent the emission of hydrocarbon caused due to inflow of icing particles by preventing an end of the nozzle from being frozen. A nozzle for an LPI injector comprises a Teflon tube(12) which is made of a plastic material and connected to the LPI injector so as to allow for passage of fuel; and an icing tip(14) which covers the Teflon tube excluding a bottom of the Teflon tube excluding an injection hole, so as to transfer high temperature heat of an engine to the Teflon tube. The icing tip is made of brass material for transferring heat transferred from an engine joint member(10) to the Teflon tube without loss of heat.

Description

엘피아이 인젝터의 노즐{A Nozzle For LPI Injecter}A Nozzle For LPI Injecter}

도 1은 본 발명에 의한 인젝터의 단면도.1 is a cross-sectional view of the injector according to the present invention.

도 2는 본 발명의 요부 단면도.2 is a cross-sectional view of main parts of the present invention.

도 3은 종래 인젝터의 단면도이다.3 is a cross-sectional view of a conventional injector.

본 발명은 엘피아이 인젝터의 노즐에 관한 것으로서, 보다 상세하게는 노즐의 끝단이 결빙되는 것을 방지할 수 있도록 한 엘피아이 인젝터의 노즐에 관한 것이다.The present invention relates to a nozzle of an Elpia injector, and more particularly, to an nozzle of an Elpia injector that can prevent the tip of the nozzle from freezing.

엘피아이(LPI, LPG Injection) 인젝터는 LPG 차량의 연료시스템에 적용되어 연료펌프에 의하여 가압된 액체상태의 연료를 연소실에 분사시켜 주는 것이다.LPPI Injection (LPI) injectors are applied to the fuel system of LPG vehicles to inject liquid fuel pressurized by the fuel pump into the combustion chamber.

그리고 LPI의 경우에는 연료의 특성상 인젝터에서 연료가 분사되면 순간적인 압력 차이로 인하여 기화가 발생되고, 이때 기화 잠열에 의하여 분사된 연료가 주변의 열을 빼앗게 된다.In the case of LPI, when the fuel is injected from the injector due to the characteristics of the fuel, vaporization occurs due to an instantaneous pressure difference, and the fuel injected by the latent heat of vaporization deprives the surrounding heat.

이에 따라 연료가 분사되는 부위의 주위 공기중의 수분이 결빙되면서 아이싱이 발생하게 된다.As a result, the ice in the surrounding air of the portion where the fuel is injected freezes, thereby causing icing.

이러한 문제점을 해결하기 위하여 인젝터(100)의 노즐(102)을 구성함에 있어서, 종래에는 도 3에서와 같이 연료가 지나가는 플라스틱 계열 재질의 테프론 튜브(104)가 있으며, 이 외부에는 황동재질의 아이싱 팁(106)이 감싸는 형태로 이루어져 있다.In order to solve this problem in configuring the nozzle 102 of the injector 100, there is conventionally a Teflon tube 104 of a plastic-based material through which the fuel passes, as shown in Figure 3, the outside of the brass icing tip 106 consists of a wrapping form.

상기에서 테프론 튜브(104)를 아이싱 팁(106)으로 감싸는 것은 황동 재질의 아이싱 팁(106)이 인테이크 매니폴드와 접촉되어 열전달을 통하여 연료분사 지점의 수분 응결로 인한 아이싱 발생을 억제하기 위함이다.The Teflon tube 104 is wrapped in the icing tip 106 in order to prevent the icing generation due to moisture condensation at the fuel injection point through heat transfer by contacting the intake manifold of the brass material.

그러나 상기와 같은 인젝터의 노즐에 있어서는 테프론 튜브의 끝단이 연료분사 지점까지 나와 있는 바, 연료 분사시 테프론 튜브 끝단에서 아이싱 현상이 발생하도 있다.However, in the nozzle of the injector as described above, the end of the Teflon tube extends to the fuel injection point, so that the icing phenomenon may occur at the end of the Teflon tube during fuel injection.

그리고 테프론 튜브 끝단의 경우 연료가 분사되면서 순간적으로 온도가 하강할 때 빙결핵이 생성되고, 성장하는 요인을 제공하고 있다.In the case of the end of the Teflon tube, the fuel is injected, and when the temperature drops momentarily, ice tuberculosis is formed and provides a growth factor.

이는 테프론 튜브의 끝단의 경우 주변과의 열전달이 거의 없어서, 순간적으로 주변온도가 하강할 때 빙결핵이 생성되고 성장하기에 좋은 여건을 제공하는 것이다.This is because the end of the Teflon tube has little heat transfer to the surroundings, which provides a good condition for the formation and growth of ice tuberculosis when the ambient temperature drops momentarily.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 엘피아이 인젝터의 노즐 끝단이 결빙되는 것을 방지하여 아이싱 파티클(Icing Particle)의 유입으로 인한 탄화수소 배출을 방지할 수 있도록 한 엘피아이 인젝터의 노즐을 제공함에 있다.Therefore, the present invention has been invented to solve the above problems, an object of the present invention is to prevent the discharge of hydrocarbons due to the inflow of the icing particles (Icing Particles) by preventing the pia of the nozzle end of the injector Elpia An Elpia is in providing the nozzle of the injector.

이를 실현하기 위하여 본 발명은, LPG 차량의 연료시스템에 적용되어 연료펌프에 의하여 가압된 액체상태의 연료를 연소실에 분사시켜 주는 엘피아이 인젝터의 노즐을 구성함에 있어서,In order to realize this, the present invention, in the configuration of the nozzle of the Elpia injector applied to the fuel system of the LPG vehicle to inject the fuel in the liquid state pressurized by the fuel pump in the combustion chamber,

연료가 지나가는 플라스틱 계열의 테프론 튜브와; Plastic teflon tube through which the fuel passes;

엔진의 고온의 열을 상기 테프론 튜브에 전달하기 위하여 상기 테프론 튜브의 외측 부분과 분사공을 제외한 하단부까지 은폐할 수 있도록 감싸는 아이싱 팁을 포함하여 이루어지는 엘피아이 인젝터의 노즐을 제공한다.In order to transfer the high temperature heat of the engine to the Teflon tube provides an nozzle of the Elpia injector comprising an icing tip wrapped around the outer portion of the Teflon tube and the lower end except the injection hole.

이하, 상기의 목적을 구체적으로 실현할 수 있는 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described in detail.

도 1은 본 발명에 의한 인젝터의 단면도로서, 인젝터(2)는 하우징(4)내에 삽입된 상태에서 캡(6)에 의하여 고정되고, 상기 하우징(4)의 하부와 노즐(8)의 상측은 엔진 체결구(10)에 의해 감싸여지는 형태로 이루어진다.1 is a cross-sectional view of the injector according to the present invention, in which the injector 2 is fixed by a cap 6 in a state of being inserted into the housing 4, and the lower part of the housing 4 and the upper side of the nozzle 8 are shown. It is made of a form wrapped by the engine fastener (10).

그리고 상기 노즐(8)은 상기 인젝터(2)와 연결되어 연료가 지나가는 플라스틱 계열의 테프론 튜브(12)와, 상기 테프론 튜브(12)를 접촉된 상태로 감싸는 황동재질의 아이싱 팁(14)를 포함하여 이루어진다.In addition, the nozzle 8 includes a plastic-based Teflon tube 12 connected to the injector 2 through which fuel passes, and a brass icing tip 14 covering the Teflon tube 12 in contact with the injector 2. It is done by

상기에서 아이싱 팁(14)은 상기 엔진 체결구(10)로부터 전달되는 열을 테프론 튜브(12)에 연손실 없이 접촉된 상태로 전달할 수 있도록 황동재질로 형성되는 것이다. The icing tip 14 is formed of a brass material so that the heat transmitted from the engine fastener 10 can be transferred to the Teflon tube 12 in a state without loss.

그리고 상기 아이싱 팁(14)의 하단 부분은 테프론 튜브(12)의 분사공(16)을 제외한 하단부까지 은폐시킬 수 있도록 도 2와 같이 구성된다.And the lower portion of the icing tip 14 is configured as shown in Figure 2 so as to cover up to the lower end except the injection hole 16 of the Teflon tube 12.

즉, 테프론 튜브(12)의 하단이 종래와 같이 연료 분사지점까지 노출되지 않게 되는 것이다.That is, the lower end of the Teflon tube 12 is not exposed to the fuel injection point as in the prior art.

이와같이 아이싱 팁(14)이 열전달을 통해 엔진의 고온의 열을 연료 분사지점까지 전달됨으로써, 테프론 튜브(12)의 끝단에서 연료가 분사되면서 순간적으로 발생하는 아이싱 억제함으로써, 노즐 끝단에서 빙결핵이 생성되는 것을 근본적으로 방지할 수 있게 되는 것이다.In this way, the icing tip 14 transmits the high temperature heat of the engine through the heat transfer to the fuel injection point, thereby suppressing the icing that occurs instantaneously while fuel is injected from the end of the Teflon tube 12, thereby generating ice tuberculosis at the nozzle end. It will be able to prevent the fundamentally.

이상에서와 같이 본 발명에 의하면, 엔진의 고온의 열이 황동재질의 아이싱 팁의 열전달에 의하여 연료 분사지점까지 전달됨으로써, 연료가 분사되면서 테프론 튜브의 끝단에서 순간적으로 발생하는 아이싱 억제함으로써, 노즐 끝단에서 빙결핵이 생성되는 것을 근본적으로 방지하여 아이싱 파티클의 유입으로 인한 탄화수소 배출을 방지할 수 있는 발명인 것이다.As described above, according to the present invention, the high temperature heat of the engine is transferred to the fuel injection point by the heat transfer of the brass icing tip, thereby suppressing the icing that occurs instantaneously at the end of the Teflon tube while the fuel is injected, the nozzle end It is the invention that can prevent the emission of hydrocarbons due to the inflow of icing particles by essentially preventing the formation of tuberculosis in.

Claims (1)

LPG 차량의 연료시스템에 적용되어 연료펌프에 의하여 가압된 액체상태의 연료를 연소실에 분사시켜 주는 엘피아이 인젝터의 노즐을 구성함에 있어서,In constructing the nozzle of the Elpia injector, which is applied to the fuel system of the LPG vehicle and injects the liquid fuel pressurized by the fuel pump into the combustion chamber, 연료가 지나가는 플라스틱 계열의 테프론 튜브와;Plastic teflon tube through which the fuel passes; 엔진의 고온의 열을 상기 테프론 튜브에 전달하기 위하여 상기 테프론 튜브의 외측 부분과 분사공을 제외한 하단부까지 은폐할 수 있도록 접촉된 상태로 감싸는 아이싱 팁을 포함하여 이루어짐을 특징으로 하는 엘피아이 인젝터의 노즐.The nozzle of the Elpia injector, characterized in that it comprises an icing tip wrapped in contact to cover the outer portion of the Teflon tube and the lower end except the injection hole to transfer the high temperature heat of the engine to the Teflon tube .
KR1020050080192A 2005-08-30 2005-08-30 A nozzle for lpi injecter KR100692140B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100933714B1 (en) * 2008-04-22 2009-12-24 (주)모토닉 Icing tip assembly
KR200448860Y1 (en) 2008-04-21 2010-05-27 주식회사 이룸지엔지 Injecting apparatus for lpg in liquid phase
KR200455843Y1 (en) 2008-12-26 2011-09-27 주식회사 이룸지엔지 Gas fuel injecting system for vehicle
KR101425408B1 (en) * 2013-01-31 2014-08-01 한국기계연구원 De-Icing tip for LPi injector using material of PTFE (Poly Tetra Fluoro Ethylene)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100770802B1 (en) * 2007-02-16 2007-10-29 (주)에코스타 Lpi type lpg supply apparatus and lpg/gasoline car using the same
KR100878591B1 (en) * 2007-09-20 2009-01-15 (주)모토닉 An injector for a vehicle and the installation structure thereof
KR101130179B1 (en) * 2009-07-17 2012-03-28 한국기계연구원 Freezing prevention for Injection nozzle
KR101035572B1 (en) * 2009-07-17 2011-05-19 한국기계연구원 Single body form Injection nozzle of Freezing prevention
KR102108798B1 (en) 2014-04-28 2020-05-11 현대자동차주식회사 Injector for lpg engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010029478A (en) * 1996-09-06 2001-04-06 브루인스마 에이치 에이 Injection device
KR20010107813A (en) * 2001-10-16 2001-12-07 심한섭 LPG Liquid Injector
KR20030085176A (en) * 2002-04-29 2003-11-05 한국기계연구원 A nozzle which has keeping a liquid phase lpg injector free of ice
KR20040083228A (en) * 2003-03-21 2004-10-01 한국기계연구원 Liquid phase lpg injector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010029478A (en) * 1996-09-06 2001-04-06 브루인스마 에이치 에이 Injection device
KR20010107813A (en) * 2001-10-16 2001-12-07 심한섭 LPG Liquid Injector
KR20030085176A (en) * 2002-04-29 2003-11-05 한국기계연구원 A nozzle which has keeping a liquid phase lpg injector free of ice
KR20040083228A (en) * 2003-03-21 2004-10-01 한국기계연구원 Liquid phase lpg injector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200448860Y1 (en) 2008-04-21 2010-05-27 주식회사 이룸지엔지 Injecting apparatus for lpg in liquid phase
KR100933714B1 (en) * 2008-04-22 2009-12-24 (주)모토닉 Icing tip assembly
KR200455843Y1 (en) 2008-12-26 2011-09-27 주식회사 이룸지엔지 Gas fuel injecting system for vehicle
KR101425408B1 (en) * 2013-01-31 2014-08-01 한국기계연구원 De-Icing tip for LPi injector using material of PTFE (Poly Tetra Fluoro Ethylene)

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