KR100892819B1 - LPI engine fuel hose construction structure - Google Patents

LPI engine fuel hose construction structure Download PDF

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Publication number
KR100892819B1
KR100892819B1 KR1020070079161A KR20070079161A KR100892819B1 KR 100892819 B1 KR100892819 B1 KR 100892819B1 KR 1020070079161 A KR1020070079161 A KR 1020070079161A KR 20070079161 A KR20070079161 A KR 20070079161A KR 100892819 B1 KR100892819 B1 KR 100892819B1
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South Korea
Prior art keywords
fuel hose
ring
bracket
insertion hole
lpi engine
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KR1020070079161A
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Korean (ko)
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KR20090014860A (en
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서유진
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현대자동차주식회사
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Priority to KR1020070079161A priority Critical patent/KR100892819B1/en
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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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
    • 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
    • F02M21/0296—Manufacturing or assembly; Materials, e.g. coatings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Abstract

본 발명의 LPI 엔진 연료호스 조립구조는 일측에 연료호스(101)가 연결되며, 타측으로 갈수록 외경이 줄어드는 테이퍼의 형상으로 형성되고, 외주면에 다수의 오링(110)이 구비되는 금구(100); 및 상기 금구(100)가 삽입되도록 내측으로 갈수록 내경이 줄어드는 테이퍼의 형상으로 형성되는 삽입공(200);으로 구성됨을 특징으로 한다. 본 발명은 연료호스 끝단의 금구를 통해 각각의 장치와 조립되어 가스 누출 방지성능 및 양산작업성을 개선하는 효과를 제공한다.LPI engine fuel hose assembly structure of the present invention is connected to the fuel hose 101 on one side, is formed in the shape of a taper of which the outer diameter is reduced toward the other side, the bracket 100 is provided with a plurality of O-ring 110 on the outer peripheral surface; And an insertion hole 200 formed in the shape of a taper whose inner diameter decreases toward the inner side so that the bracket 100 can be inserted therein. The present invention is assembled with each device through the bracket at the end of the fuel hose to provide the effect of improving the gas leakage prevention performance and mass production workability.

LPI, 연료호스, 금구, 오링, 삽입공 LPI, fuel hose, bracket, O-ring, insert hole

Description

ＬＰＩ 엔진 연료호스 조립구조{LPI engine fuel hose construction structure}LPI engine fuel hose construction structure

도 1은 일반적인 LPI 연료시스템의 구성도이다.1 is a block diagram of a general LPI fuel system.

도 2는 종래의 LPI 엔진 연료호스 조립구조를 도시한 도면이다.2 is a view showing a conventional LPI engine fuel hose assembly structure.

도 3은 본 발명에 따른 LPI 엔진 연료호스 조립구조를 도시한 도면이다.3 is a view showing the LPI engine fuel hose assembly structure according to the present invention.

*도면중 주요부분에 관한 부호의 설명** Description of symbols on main parts of the drawings *

A - LPI 엔진 연료호스 조립구조 100 - 금구A-LPI Engine Fuel Hose Assembly 100-Bracket

101 - 연료호스 102 - 오링안착홈101-Fuel Hose 102-O-Ring Home

111 - 제1오링 112 - 제2오링111-First O-ring 112-Second O-ring

200 - 삽입공 211 - 제1단턱부200-Insertion hole 211-First step

212 - 제2단턱부212-second step

본 발명은 LPI 엔진 연료호스 조립구조에 관한 것으로, 더욱 상세하게는 연 료호스 끝단의 금구를 통해 각각의 장치와 조립되어 가스 누출 방지성능 및 양산작업성을 개선하는 LPI 엔진 연료호스 조립구조에 관한 것이다.The present invention relates to an LPI engine fuel hose assembly structure, and more particularly, to an LPI engine fuel hose assembly structure which is assembled with each device through a metal fitting at the end of a fuel hose to improve gas leakage prevention performance and mass production workability. will be.

LPI 엔진의 연료시스템은 주지된 바와 같이 LP가스가 저장된 봄베로부터 연료를 펌핑하여 연료호스를 통해 인젝터로 공급시키고, 인젝터로 과잉공급된 연료는 리턴연료호스를 통하여 봄베로 회수되도록 구성된다.As is well known, the fuel system of the LPI engine is configured to pump fuel from a cylinder in which LP gas is stored and to supply the fuel to the injector through the fuel hose, and the fuel supplied to the injector is recovered to the cylinder through the return fuel hose.

도 1은 일반적인 LPI 엔진의 연료시스템을 도시한 도면으로서, 봄베(10) 내부에는 연료의 펌핑을 위한 연료펌프(11)가 형성되고, 상기 연료펌프(11)에서 펌핑된 연료가 각 연소실에 마련된 인젝터(14)까지 공급하도록 연료호스(12)가 배관된다. 한편, 연료호스(12)로 공급된 연료의 압력이 일정수준 이상이 될 경우에는 과잉공급된 연료가 봄베(10)로 회수되도록 리턴연료호스(13)가 배관된다. 상기한 리턴연료호스(13)를 통한 연료의 회수는 상기 리턴연료호스(13)의 도중에 장착되는 레귤레이터(15)에 의해서 이루어진다.1 is a view illustrating a fuel system of a general LPI engine, in which a fuel pump 11 for pumping fuel is formed inside a cylinder 10, and fuel pumped from the fuel pump 11 is provided in each combustion chamber. The fuel hose 12 is piped to supply the injector 14. On the other hand, when the pressure of the fuel supplied to the fuel hose 12 is above a certain level, the return fuel hose 13 is piped so that the excess fuel is recovered to the cylinder 10. The recovery of the fuel through the return fuel hose 13 is performed by the regulator 15 mounted in the middle of the return fuel hose 13.

한편, 연료호스(12,13)는 각각의 장치(봄베, 연료펌프, 인젝터, 레귤레이터)와 가스의 누출을 방지하도록 결합되는바, 초기 LPI엔진에서는 아이 볼트 방식으로 연료호스(12,13)를 각각의 장치(봄베, 연료펌프, 인젝터, 레귤레이터)에 조립되었다. 하지만, 연료호스(12,13) 끝단의 아이 볼트에 풀림 토크가 가해져 아이 볼트는 헐거워지고 이로 인해 가스누출이 발생하는 문제점이 제기되었다.On the other hand, the fuel hose (12, 13) is coupled to each device (bomb, fuel pump, injector, regulator) to prevent the leakage of the gas, the initial LPI engine in the eye bolt method to the fuel hose (12, 13) Each unit (bomb, fuel pump, injector, regulator) was assembled. However, a loosening torque is applied to the eye bolts at the ends of the fuel hoses 12 and 13, and the eye bolts become loose, thereby causing a problem of gas leakage.

이와 같은 문제점을 개선하기 위해 도 2의 LPI 엔진 연료호스 조립구조가 개발되었다.In order to improve this problem, the LPI engine fuel hose assembly structure of FIG. 2 has been developed.

도 2는 종래의 LPI 엔진 연료호스 조립구조를 도시한 도면으로서, 연료호 스(12,13)의 끝단에는 금구(16)가 결합되고, 상기 금구(16)의 외측으로 2개의 오링(16a,16b)이 설치되었다. 또한, 2개의 오링(16a,16b)이 설치된 금구(16)는 장치(봄베, 연료펌프, 인젝터, 레귤레이터)의 삽입공(17)에 삽입되어 오링(16a,16b)과 삽입공(17)이 밀착되어 가스의 노출을 방지하는 구성이다.FIG. 2 is a view illustrating a conventional LPI engine fuel hose assembly structure, in which the metal fittings 16 are coupled to the ends of the fuel hoses 12 and 13, and two O-rings 16a and the outside of the metal fittings 16. 16b) was installed. In addition, the bracket 16 provided with the two O-rings 16a and 16b is inserted into the insertion hole 17 of the device (bomb, fuel pump, injector, regulator) so that the O-rings 16a and 16b and the insertion hole 17 are provided. It is in close contact and prevents gas exposure.

그러나, 종래의 LPI 엔진 연료호스 조립구조는 금구(16)가 삽입공(17)에 삽입되면 2개의 오링(16a,16b)이 순차적으로 조립되는 구조로서, 첫번째 삽입되는 오링(16a)은 두번째 삽입되는 오링(16b)이 삽입될 때까지 압축력을 이기며 전진해야 하므로 상대적으로 큰 힘(압축력*삽입길이)이 필요해 조립이 힘들어 양산성이 떨어지는 문제점이 있게 된다.However, in the conventional LPI engine fuel hose assembly structure, when the bracket 16 is inserted into the insertion hole 17, two O-rings 16a and 16b are sequentially assembled, and the first O-ring 16a inserted is the second insertion. Since the O-ring (16b) is to be pushed forward until the compression force is inserted, it requires a relatively large force (compression force * insertion length) is difficult to assemble, there is a problem that the productivity is inferior.

또한, 오링(16a,16b)과 삽입공(17)의 내면 사이의 마찰력에 의해 오링(16a,16b)이 삽입 반대방향으로 밀려남에 따라 오링(16a,16b) 끼임이 발생하여 조립성이 떨어질 수 있으며, 마찰력에 의해 오링(16a,16b)이 밀려나 오링(16a,16b)의 위치가 변경되었을 경우 기밀유지가 어려워져 가스 압력이 상승될 경우 누출의 위험이 발생하는 문제점이 있게 된다.In addition, as the O-rings 16a and 16b are pushed in the opposite direction to the insertion by the frictional force between the O-rings 16a and 16b and the inner surface of the insertion hole 17, the O-rings 16a and 16b may be caught, resulting in poor assembly. In addition, when the O-rings 16a and 16b are pushed by the frictional force and the positions of the O-rings 16a and 16b are changed, it is difficult to maintain the airtightness, and thus there is a problem that a risk of leakage occurs when the gas pressure is increased.

따라서, 본 발명은 전술한 종래의 제반 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 연료호스 끝단의 금구를 통해 각각의 장치와 조립되어 가스 누출 방지성능 및 양산작업성을 개선하는 LPI 엔진 연료호스 조립구조를 제공함에 있다.Therefore, the present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to be assembled with the respective devices through the bracket of the fuel hose end of the LPI engine to improve the gas leakage performance and mass production workability To provide a fuel hose assembly structure.

이러한 목적을 달성하기 위한 본 발명의 LPI 엔진 연료호스 조립구조는, 일측에 연료호스(101)가 연결되며, 타측으로 갈수록 외경이 줄어드는 테이퍼의 형상으로 형성되고, 외주면에 다수의 오링(110)이 구비되는 금구(100); 및 상기 금구(100)가 삽입되도록 내측으로 갈수록 내경이 줄어드는 테이퍼의 형상으로 형성되는 삽입공(200);으로 구성됨을 특징으로 한다.LPI engine fuel hose assembly structure of the present invention for achieving this purpose, the fuel hose 101 is connected to one side, is formed in the shape of a taper of which the outer diameter is reduced toward the other side, a plurality of O-ring 110 on the outer peripheral surface Bracket 100 is provided; And an insertion hole 200 formed in the shape of a taper whose inner diameter decreases toward the inner side so that the bracket 100 can be inserted therein.

또한, 상기 삽입공(200)에는 상기 다수의 오링(110)에 대응되는 계단형태의 다수의 단턱부(210)가 형성된다.In addition, the insertion hole 200 has a plurality of stepped portions 210 having a step shape corresponding to the plurality of O-rings 110.

그리고, 상기 다수의 오링(110)은 상기 금구(100)의 상단부에 설치되는 제1오링(111)과, 하단부에 설치되는 제2오링(112)으로 구성되며, 상기 다수의 단턱부(210)는 상기 제1오링(111)에 대응되도록 상기 삽입공(200) 상단부에 형성되는 제1단턱부(211)와, 상기 제2오링(112)에 대응되도록 상기 삽입공(200) 하단부에 형성되는 제2단턱부(212)로 구성됨을 특징으로 하는 LPI 엔진 연료호스 조립구조.The plurality of O-rings 110 may include a first O-ring 111 installed at an upper end of the bracket 100 and a second O-ring 112 installed at a lower end of the bracket 100. The first stepped portion 211 is formed on the upper end of the insertion hole 200 to correspond to the first O-ring 111 and is formed on the lower end of the insertion hole 200 to correspond to the second O-ring 112. LPI engine fuel hose assembly structure, characterized in that consisting of the second step (212).

이하, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있을 정도로 본 발명의 바람직한 실시 예를 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

도 3은 본 발명에 따른 LPI 엔진 연료호스 조립구조를 도시한 도면이다.3 is a view showing the LPI engine fuel hose assembly structure according to the present invention.

도 3에 도시된 바와 같이 본 발명에 따른 LPI 엔진 연료호스 조립구조(A)는 크게 LPG연료 주입을 위한 연료호스(101)에 연결되며, 상기 연결호스(101)에 연결되지 않은 방향으로 외경이 줄어드는 테이퍼의 형상으로 다수의 오링(110)이 구비되는 금구(100)와, 상기 금구(100)가 삽입되도록 내측으로 갈수록 내경이 줄어드는 테이퍼의 형상으로 상기 다수의 오링(110)에 대응되는 다수의 단턱부(210)가 형성되는 삽입공(200)으로 구성된다.As shown in FIG. 3, the LPI engine fuel hose assembly structure A according to the present invention is largely connected to the fuel hose 101 for LPG fuel injection, and has an outer diameter in a direction not connected to the connection hose 101. A plurality of metal rings corresponding to the plurality of O-rings 110 in the shape of a taper that is provided with a plurality of O-ring 110 in the shape of a tapered taper, the inner diameter decreases toward the inside so that the bracket 100 is inserted The stepped portion 210 is formed of the insertion hole 200 is formed.

또한, 상기 삽입공은 LPG연료가 주입되도록 각각의 장치(봄베, 연료펌프, 인젝터, 레귤레이터)에 형성되는 것이다.In addition, the insertion hole is formed in each device (bomb, fuel pump, injector, regulator) so that LPG fuel is injected.

그리고, 상기 다수의 오링(110)은 상기 금구(100)의 상단부에 설치되는 제1오링(111)과, 하단부에 설치되는 제2오링(112)으로 구성되며, 상기 금구(100)에는 다수의 오링(110)이 설치되어 이탈되지 않도록 오링안착홈(102)이 형성된다.The plurality of O-rings 110 may include a first O-ring 111 installed at an upper end of the bracket 100 and a second O-ring 112 installed at a lower end of the bracket 100. O-ring 110 is installed so that the O-ring seating groove 102 is not separated.

한편, 다수의 오링(110)은 가스의 누출을 방지하기 위한 구성으로서 탄성력을 가지는 고무재가 사용되는 것이 바람직하다.On the other hand, the plurality of O-ring 110 is preferably a rubber material having an elastic force as a configuration for preventing the leakage of gas.

또한, 상기 다수의 단턱부(210)는 상기 제1오링(111)에 대응되도록 상기 삽입공(200) 상단부에 형성되는 제1단턱부(211)와, 상기 제2오링(112)에 대응되도록 상기 삽입공(200) 하단부에 형성되는 제2단턱부(212)로 구성된다.In addition, the plurality of stepped portions 210 may correspond to the first stepped portions 211 formed at the upper end of the insertion hole 200 and the second O-rings 112 so as to correspond to the first O-rings 111. It consists of a second stepped portion 212 formed in the lower end of the insertion hole (200).

따라서, 삽입공(100)에 연료호스(101)가 연결된 금구(100)가 삽입되고, 상기 금구(100)의 제1,2오링(111,112)은 상기 삽입공(200)의 제1,2단턱부(211,212)와 밀착되어 결합 된다.Therefore, the bracket 100 connected with the fuel hose 101 is inserted into the insertion hole 100, and the first and second O-rings 111 and 112 of the bracket 100 are first and second ends of the insertion hole 200. It is coupled in close contact with the jaw 211,212.

그리고, 제1단턱부(211)와 제2단턱부(212) 사이는 내경의 단차가 있는 계단 형상으로 제1오링(111)과 제2오링(112)이 제1단턱부와 제2단턱부(212)와 결합시 제 1,2오링(112)은 밀림이 발생하지 않으며 금구(100)와 삽입공(200)은 원활하게 결합되어 양산작업성이 향상된다.In addition, the first o-ring 111 and the second o-ring 112 have a first stepped portion and a second stepped portion between the first stepped portion 211 and the second stepped portion 212 in a step shape having a step diameter. When combined with 212, the first and second o-rings 112 do not generate rolling and the bracket 100 and the insertion hole 200 are smoothly coupled to improve mass production workability.

또한, 도 2에 도시된 종래의 LPI 엔진 연료호스 조립구조는 삽입공(17)과 2개의 오링(16a,16b)이 삽입공(17)의 내면과 밀착 결합되어 기밀구간이 2개 발생되지만, 본 발명은 도 3의 확대도에 도시된 바와 같이 제1오링(111)의 외주면과 삽입공(200)의 내주면이 결합되어 발생되는 기밀구간(a)과, 상기 제1오링(111)의 하단과 제1단턱부(211)가 결합되어 발생되는 기밀구간(b)과, 제2오링(112)의 외주면과 삽입공(200)의 내주면이 결합되어 발생되는 기밀구간(c)과, 상기 제2오링(112)의 하단과 제2단턱부(212)가 결합되어 발생되는 기밀구간(d)으로 총 4개의 기밀구간이 형성되어 종래 대비 가스 누출의 위험이 줄어든다.In addition, in the conventional LPI engine fuel hose assembly structure shown in FIG. 2, the insertion hole 17 and the two O-rings 16a and 16b are closely coupled to the inner surface of the insertion hole 17, but two airtight sections are generated. As shown in the enlarged view of FIG. 3, an airtight section a generated by combining an outer circumferential surface of the first O-ring 111 and an inner circumferential surface of the insertion hole 200 and a lower end of the first O-ring 111. And the airtight section (b) generated by combining the first stepped portion 211, the airtight section (c) generated by combining the outer circumferential surface of the second O-ring 112 and the inner circumferential surface of the insertion hole 200, and The airtight section (d) generated by combining the lower end of the second O-ring 112 and the second stepped portion 212 has a total of four airtight sections, thereby reducing the risk of gas leakage.

그리고, 금구(100)와 삽입공(200)의 결합은 제1,2오링(111,112)에 의해 억지 끼움 되어 결합이 견고히 유지되고, 이외에 볼트 및 추가적인 구성에 의해 더 견고하게 결합이 가능하다.In addition, the coupling between the bracket 100 and the insertion hole 200 is forcibly fitted by the first and second O-rings 111 and 112, so that the coupling is firmly maintained, and in addition to the bolt and the additional configuration, the coupling may be more firmly performed.

이상, 본 발명을 바람직한 실시 예를 사용하여 상세히 설명하였으나, 본 발명의 범위는 특정 실시 예에 한정되는 것은 아니며, 첨부된 특허 청구범위에 의하여 해석되어야 할 것이다. 또한, 이 기술분야에서 통상의 지식을 습득한 자라면, 본 발명의 범위에서 벗어나지 않으면서도 많은 수정과 변형이 가능함을 이해하여야 할 것이다.As mentioned above, although this invention was demonstrated in detail using the preferable embodiment, the scope of the present invention is not limited to a specific embodiment and should be interpreted by the attached claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

상술한 바와 같이 본 발명에 따른 LPI 엔진 연료호스 조립구조는, 연료호스 끝단의 금구를 통해 각각의 장치와 조립되어 가스 누출 방지성능 및 양산작업성을 개선하는 효과를 제공한다.As described above, the LPI engine fuel hose assembly structure according to the present invention is assembled with each device through the bracket at the end of the fuel hose, thereby providing an effect of improving gas leakage preventing performance and mass production workability.

또한, 단턱이 형성되므로 금구가 과도하게 삽입될 우려가 없어지는 효과를 제공한다.In addition, since the step is formed, there is an effect that there is no fear of excessive insertion of the bracket.

Claims (3)

삭제delete 일측에 연료호스(101)가 연결되며, 타측으로 갈수록 외경이 줄어드는 테이퍼의 형상으로 형성되고, 외주면에 다수의 오링(110)이 구비되는 금구(100); 및The fuel hose 101 is connected to one side, and is formed in the shape of a tapered taper outer diameter is reduced toward the other side, the bracket 100 is provided with a plurality of O-ring 110 on the outer peripheral surface; And 상기 금구(100)가 삽입되도록 내측으로 갈수록 내경이 줄어드는 테이퍼의 형상으로 형성되는 삽입공(200);으로 구성되고,Consisting of the insertion hole 200 is formed in the shape of a taper that the inner diameter is reduced toward the inside so that the bracket 100 is inserted, 상기 삽입공(200)에는 상기 다수의 오링(110)에 대응되는 계단형태의 다수의 단턱부(210)가 형성되는 것을 특징으로 하는 LPI 엔진 연료호스 조립구조.LPI engine fuel hose assembly structure, characterized in that the insertion hole 200 is formed with a plurality of stepped portion 210 of the step shape corresponding to the plurality of O-ring (110). 제 2항에 있어서,The method of claim 2, 상기 다수의 오링(110)은 상기 금구(100)의 상단부에 설치되는 제1오링(111)과, 하단부에 설치되는 제2오링(112)으로 구성되며,The plurality of O-rings 110 is composed of a first O-ring 111 is installed on the upper end of the bracket 100, the second O-ring 112 is installed on the lower end, 상기 다수의 단턱부(210)는 상기 제1오링(111)에 대응되도록 상기 삽입공(200) 상단부에 형성되는 제1단턱부(211)와, 상기 제2오링(112)에 대응되도록 상기 삽입공(200) 하단부에 형성되는 제2단턱부(212)로 구성됨을 특징으로 하는 LPI 엔진 연료호스 조립구조.The plurality of stepped portions 210 may include a first stepped portion 211 formed at an upper end of the insertion hole 200 to correspond to the first O-ring 111, and the insertion to correspond to the second O-ring 112. LPI engine fuel hose assembly structure, characterized in that consisting of the second stepped portion (212) formed in the lower end of the ball (200).
KR1020070079161A 2007-08-07 2007-08-07 LPI engine fuel hose construction structure KR100892819B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2864283B2 (en) * 1990-07-30 1999-03-03 ヤマハ発動機株式会社 Air fuel injection device for internal combustion engine
JP2002202030A (en) * 2000-10-13 2002-07-19 Nok Corp Combustion gas seal for injector
JP2002257239A (en) * 2000-12-26 2002-09-11 Toyota Motor Corp Gas seal and combustion gas seal for injector
WO2007055118A1 (en) 2005-11-11 2007-05-18 Bosch Corporation Connector for circulation, connection structure for connector for circulation, and fuel circulation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2864283B2 (en) * 1990-07-30 1999-03-03 ヤマハ発動機株式会社 Air fuel injection device for internal combustion engine
JP2002202030A (en) * 2000-10-13 2002-07-19 Nok Corp Combustion gas seal for injector
JP2002257239A (en) * 2000-12-26 2002-09-11 Toyota Motor Corp Gas seal and combustion gas seal for injector
WO2007055118A1 (en) 2005-11-11 2007-05-18 Bosch Corporation Connector for circulation, connection structure for connector for circulation, and fuel circulation system

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