KR20020073727A - Pusatiion damper structure integrated with a fuel dilivery pipe of a fuel system - Google Patents

Pusatiion damper structure integrated with a fuel dilivery pipe of a fuel system Download PDF

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Publication number
KR20020073727A
KR20020073727A KR1020010013482A KR20010013482A KR20020073727A KR 20020073727 A KR20020073727 A KR 20020073727A KR 1020010013482 A KR1020010013482 A KR 1020010013482A KR 20010013482 A KR20010013482 A KR 20010013482A KR 20020073727 A KR20020073727 A KR 20020073727A
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South Korea
Prior art keywords
fuel
damper
delivery pipe
diaphragm
pipe
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KR1020010013482A
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Korean (ko)
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유재웅
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현대자동차주식회사
기아자동차주식회사
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Priority to KR1020010013482A priority Critical patent/KR20020073727A/en
Publication of KR20020073727A publication Critical patent/KR20020073727A/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
    • F02M55/00Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • 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
    • F02M37/00Apparatus 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
    • F02M37/0011Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0041Means for damping pressure pulsations

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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

PURPOSE: A structure of a pulsating damper integrated with a fuel delivery pipe for a fuel device is provided to decrease the number of parts and to prevent the leakage of fuel by installing the pulsating damper at the fuel delivery pipe by curling pressing method. CONSTITUTION: A structure of a pulsating damper integrated with a fuel delivery pipe(200) is composed of a diaphragm(10) supported by an elastic spring(11), and a container-shaped damper cap(20) for covering the diaphragm(10) and the elastic spring(11). A curling is formed at the joint surface of the damper cap(20) and fuel delivery pipe(200).

Description

연료 장치용 연료 전달 파이프 일체형 맥동 댐퍼 구조{Pusatiion damper structure integrated with a fuel dilivery pipe of a fuel system}Fuel damper structure integrated with a fuel dilivery pipe of a fuel system

본 발명은 연료 장치용 연료 전달 파이프 일체형 맥동 댐퍼 구조에 관한 것으로, 더욱 상세하게는 댐퍼 캡을 연료 전달 파이프에 커링(curling) 압착하여 고정시킬 수 있도록 한 연료 장치용 연료 전달 파이프 일체형 맥동 댐퍼 구조에 관한 것이다.The present invention relates to a fuel delivery pipe-integrated pulsation damper structure for a fuel device, and more particularly to a fuel delivery pipe-integrated pulsation damper structure for enabling a damper cap to be pressed and fixed to a fuel delivery pipe. It is about.

일반적으로 엔진에 구성되는 연료 장치는 기화기식 연료 장치와 전자연료 분사 장치로 대별할 수 있다.In general, a fuel device configured in an engine can be roughly classified into a vaporizer fuel device and an electronic fuel injection device.

상기 전자 연료 분사 장치(MPI)는 연료탱크 내에 장착된 연료펌프의 구동으로 연료를 고압의 연료필터에 공급하고, 필터링이 끝난 연료는 공급 파이프(delivery pipe)를 거쳐 각 인젝터에 분배되어 연소실 내부에 분사가 이루어지게 된다.The electronic fuel injection device (MPI) supplies fuel to a high pressure fuel filter by driving a fuel pump mounted in a fuel tank, and the filtered fuel is distributed to each injector through a delivery pipe to be inside the combustion chamber. Injection is made.

특히, 상기 공급 파이프는 다수개의 인젝터에 연료를 분배해 주는 작용과 함께 규정 압력 이상으로 압송되는 연료를 리턴 파이프를 통해 연료탱크로 다시 송출시켜 주는 압력 조절기(pressure regulator)가 구비되어 있다.In particular, the supply pipe is provided with a pressure regulator for dispensing fuel to a plurality of injectors and for delivering the fuel pushed over a predetermined pressure back to the fuel tank through the return pipe.

또한, 상기 공급 파이프에는 연료를 압송시켜 주는 파이프 내에서 발생되는 맥동을 없애 주기 위해 일단부에 맥동 댐퍼가 구비되어 있다.In addition, the supply pipe is provided with a pulsation damper at one end to eliminate the pulsation generated in the pipe for pumping fuel.

즉, 상기 공급 파이프는 일단이 고압 연료 필터를 통해 압송된 연료를 공급받아 인젝터를 통해 분사를 시켜 주게 되고, 이때 상기 맥동 댐퍼는 이러한 연료의압송중에 인젝터가 개구되는 상황과 같이 연료 라인에서 발생되는 압력 맥동을 없애 연료 분사를 안정시켜 주게 되며 상기 압력 조절기는 규정 압력 이상으로 올라가게 되면 여분의 연료를 연료탱크로 재순환시켜 주게 되는 것이다.That is, the supply pipe is supplied with the fuel pushed through the high-pressure fuel filter is injected through the injector, the pulsation damper is generated in the fuel line, such as the situation in which the injector is opened during the injection of the fuel It eliminates pressure pulsation and stabilizes fuel injection. When the pressure regulator rises above a specified pressure, the excess fuel is recycled to the fuel tank.

이러한 맥동 댐퍼(100)는, 첨부도면 도 3에 도시한 바와 같이, 2단 실린더 형상으로 내부에 유입구멍(111)이 형성된 댐퍼 몸체(110)와, 탄성스프링(121)의 탄성 지지를 받으면서 상기 댐퍼 몸체(110)의 일측에 장착되는 다이어프램(120)과, 이 다이어프램(120)을 감싸주면서 상기 댐퍼 몸체(110)에 고정되어 그 단부를 마감시켜 주는 댐퍼 캡(130)으로 구성되어 있다.The pulsation damper 100, as shown in the accompanying drawings, a two-stage cylindrical shape in which the inlet hole 111 is formed therein and receiving the elastic support of the elastic spring 121, The diaphragm 120 is mounted on one side of the damper body 110, and the damper cap 130 is fixed to the damper body 110 while covering the diaphragm 120 to close the end thereof.

이와 같이 이루어진 맥동 댐퍼(100)는 상기 댐퍼 몸체(110)에 다이어프램(120)과 탄성스프링(121)을 순차적으로 올려 놓고, 그 위로 댐퍼 캡(130)을 씌워 마감하여 댐퍼 어셈블리로서 조립하여 사용하게 되며, 이렇게 조립된 댐퍼 어셈블리는 연료 파이프(200)의 단부에 볼트로 고정시켜 이 연료 파이프(200)로부터 유입되는 압력 변화에 따라 발생되는 맥동을 없애주게 된다.The pulsation damper 100 formed as described above sequentially puts the diaphragm 120 and the elastic spring 121 on the damper body 110, and covers the damper cap 130 to finish and assemble it as a damper assembly. The damper assembly thus assembled is bolted to the end of the fuel pipe 200 to eliminate pulsation caused by the pressure change flowing from the fuel pipe 200.

즉, 상기 연료 파이프(200)에는 엔진 회전수나 인젝터를 통해 연료가 분사됨에 따라 내부압력이 변하게 되고 이에 따라 연료에 맥동이 발생하게 되는데, 이렇게 발생된 맥동은 탄성 지지를 받는 상기 댐퍼(100)의 다이어프램(120)이 작동에 의해 흡수되게 된다.That is, the internal pressure changes as the fuel is injected through the engine speed or the injector to the fuel pipe 200, and thus the pulsation occurs in the fuel. The pulsation generated by the fuel pipe 200 is elastically supported by the damper 100. The diaphragm 120 is absorbed by the operation.

그러나, 종래의 맥동 댐퍼(100)는 댐퍼 어셈블리 조립체로서 조립하고 다시 이 조립체를 욘료 파이프(200)에 체결하는 구조로 이루어져 있기 때문에 댐퍼 몸체(110)를 필요로 하게 되고, 이에 따라 조립 부품수가 증가하게 될 뿐만 아니라여러개의 부품을 조립하다 보니 각 조립 부위에서 연료가 새어 나오는 누압 성능이 떨어지게 되어 이에 대한 개선이 필요하게 되었다.However, the conventional pulsation damper 100 requires a damper body 110 because it is configured as a damper assembly assembly and then fastens the assembly to the yollyo pipe 200, thereby increasing the number of assembly parts. In addition, as a result of assembling several components, the pressure leakage performance of the fuel leaking from each assembly site is reduced, which requires improvement.

본 발명은 이러한 점을 감안하여 안출한 것으로, 종래의 댐퍼 몸체를 삭제하고 맥동 댐퍼를 직접 연료 파이프에 커링 압착 방식으로 장착함으로써, 부품수를 줄여 줄 수 있을 뿐만 아니라 체결 부위를 줄여 연료의 누압 현상을 막을 수 있도록 한 연료 장치용 연료 전달 파이프 일체형 맥동 댐퍼 구조를 제공하는데 그 목적이 있다.The present invention has been made in view of this point, and by removing the conventional damper body and mounting the pulsation damper directly to the fuel pipe by curing crimping, the number of parts can be reduced and the pressure of the fuel can be reduced by reducing the fastening part. It is an object of the present invention to provide a pulsation damper structure with an integrated fuel delivery pipe for a fuel device, which can be prevented.

도 1은 본 발명에 따르는 맥동 댐퍼 구조를 나타내는 사시도,1 is a perspective view showing a pulsation damper structure according to the present invention,

도 2는 본 발명에 따르는 맥동 댐퍼 구조의 적용예를 보여주는 단면도,2 is a cross-sectional view showing an application example of the pulsation damper structure according to the present invention,

도 3은 종래의 맥동 댐퍼 구조를 나타내는 사시도.3 is a perspective view showing a conventional pulsation damper structure.

[도면의 주요 부분에 대한 부호의 설명][Description of Symbols for Main Parts of Drawing]

10, 120 : 다이어프램 11, 121 : 탄성스프링10, 120: diaphragm 11, 121: elastic spring

20, 130 : 댐퍼 캡 100 : 맥동 댐퍼20, 130: damper cap 100: pulsation damper

110 : 댐퍼 몸체 111 : 유입 구멍110: damper body 111: inlet hole

200 : 딜리버리 파이프200: delivery pipe

이를 실현하기 위한 본 발명은 탄성스프링의 지지를 받는 다이어프램과, 이 탄성스프링과 다이어프램을 감싸주는 용기 형상의 댐퍼 캡으로 이루어지되, 상기 댐퍼 캡은 딜리버리 파이프에 결합되는 면에 커링(curling)이 형성되어 있는 것을 특징으로 한다.The present invention for realizing this consists of a diaphragm supported by an elastic spring, and a damper cap of a container shape surrounding the elastic spring and the diaphragm, wherein the damper cap is formed on a surface coupled to the delivery pipe. It is characterized by that.

이하, 첨부도면을 참조하여 본 발명의 구성 및 작용에 대해 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention with reference to the accompanying drawings.

첨부도면 도 1은 본 발명에 따르는 맥동 댐퍼 구조를 나타내는 사시도이고, 첨부도면 도 2는 본 발명에 따르는 맥동 댐퍼 구조의 적용예를 보여주는 단면도로, 도면부호 200은 딜리버리 파이프를 나타낸다.1 is a perspective view showing a pulsation damper structure according to the present invention, Figure 2 is a cross-sectional view showing an application example of the pulsation damper structure according to the present invention, reference numeral 200 denotes a delivery pipe.

본 발명은 상기 딜리버 파이프(200)의 개구된 일단에 탄성스프링(11)의 탄성 지지를 받는 다이어프램(10)과, 이 다이어프램(10)을 감싸주면서 상기 딜리버리 파이프(200)의 단부에 고정되는 댐퍼 캡(20)으로 이루어져 있다.The present invention is a diaphragm (10) receiving the elastic support of the elastic spring 11 in the open end of the delivery pipe 200, and the damper is fixed to the end of the delivery pipe 200 while wrapping the diaphragm (10) It consists of a cap 20.

여기서, 상기 다이어프램(10)과 탄성스프링(11)은 종래의 맥동 댐퍼에 사용되는 통상적인 것을 사용하게 된다.Here, the diaphragm 10 and the elastic spring 11 is to use the conventional one used in the conventional pulsation damper.

상기 댐퍼 캡(20)은 얇은 용기 형상으로 이루어져서 상술한 다이어프램(10)과 탄성스프링(11)을 감싸주게 되며, 특히 상기 댐퍼 캡(20)은 딜리버리 파이프(200)에 커링(curling) 가공으로 장착되게 된다.The damper cap 20 has a thin container shape to surround the diaphragm 10 and the elastic spring 11 described above. In particular, the damper cap 20 is mounted to the delivery pipe 200 by a curling process. Will be.

특히, 상기 댐퍼 캡(20)은, 첨부도면 도 2에서 도시한 바와 같이, 면접촉이 아닌 선접촉을 하도록 딜리버리 파이프(200)에 커링 처리되어 있으며, 이는 상기 댐퍼 캡(20)과 딜리버리 파이프(200) 사이에 소정의 간격을 둠으로써 연료의 누유가 바로 이루어지지 않도록 하기 위한 것이다.In particular, as shown in FIG. 2, the damper cap 20 is cured to the delivery pipe 200 so as to make a line contact instead of a surface contact, which is the damper cap 20 and the delivery pipe ( By providing a predetermined interval between the 200) to prevent the leakage of fuel is made immediately.

따라서, 상기 댐퍼 캡(20)은 내부에 탄성스프링(11)과 다이어프램(10)을 순차적으로 감싸주는 형태로 딜리버리 파이프(200)의 단부에 장착되게 된다.Therefore, the damper cap 20 is mounted to the end of the delivery pipe 200 in a form that sequentially wraps the elastic spring 11 and the diaphragm 10 therein.

이상에서 본 바와 같이 본 발명은 탄성스프링의 지지를 받는 다이어프램과, 이 탄성스프링과 다이어프램을 감싸주는 용기 형상의 댐퍼 캡으로 이루어지되, 상기 댐퍼 캡은 딜리버리 파이프에 결합되는 면에 커링(curling)이 형성되어 있는 것을 특징으로 하는 연료 장치용 연료 전달 파이프 일체형 맥동 댐퍼 구조를 제공함으로써 다음과 같은 효과를 얻게 된다.As described above, the present invention comprises a diaphragm supported by an elastic spring, and a damper cap of a container shape surrounding the elastic spring and the diaphragm, wherein the damper cap is cured on a surface coupled to the delivery pipe. By providing a fuel delivery pipe integrated pulsation damper structure for a fuel device, the following effects are obtained.

1) 부품수의 감소로 비용 및 작업공수를 줄여 원가를 절감할 수 있게 된다.1) Reduction in the number of parts can reduce costs and labor.

2) 특히, 커링 형상을 통해 댐퍼 캡과 딜리버리 파이프가 결합되기 때문에 이들간에 결속력을 강화시켜 누유 및 누압되는 것을 현저하게 줄여 줄 수 있게 된다.2) In particular, because the damper cap and the delivery pipe are combined through the curling shape, it is possible to significantly reduce the leakage and leakage by strengthening the binding force between them.

Claims (2)

탄성스프링의 지지를 받는 다이어프램과, 이 탄성스프링과 다이어프램을 감싸주는 용기 형상의 댐퍼 캡으로 이루어지되,A diaphragm supported by an elastic spring and a container-shaped damper cap surrounding the elastic spring and the diaphragm, 상기 댐퍼 캡은 딜리버리 파이프에 결합되는 면에 커링(curling)이 형성되어 있는 것을 특징으로 하는 연료 장치용 연료 전달 파이프 일체형 맥동 댐퍼 구조.The damper cap is a fuel delivery pipe integrated pulsation damper structure for a fuel device, characterized in that the curling (curling) is formed on the surface coupled to the delivery pipe. 제 1 항에 있어서, 상기 댐퍼 캡은 딜리버리 파이프에 결합되는 부위에 선접촉이 이루어지도록 커링이 형성되어 있는 것을 특징으로 하는 연료 장치용 연료 전달 파이프 일체형 맥동 댐퍼 구조.2. The pulsation damper structure as recited in claim 1, wherein the damper cap is formed with a curing such that a line contact is made to a portion that is coupled to the delivery pipe.
KR1020010013482A 2001-03-15 2001-03-15 Pusatiion damper structure integrated with a fuel dilivery pipe of a fuel system KR20020073727A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190077988A (en) 2017-12-26 2019-07-04 (주)모토닉 Damping device for reducing fuel pulsation of gas engine
KR20200011762A (en) 2018-07-25 2020-02-04 (주)모토닉 Damping device for reducing pulsation of fuel rail

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JPH1162749A (en) * 1997-08-08 1999-03-05 Keihin Corp Method for positioning and mounting pressure control valve
JPH11315923A (en) * 1998-02-09 1999-11-16 Robert Bosch Gmbh Pressure buffer for pressure container
JP2000274332A (en) * 1999-03-19 2000-10-03 Keihin Corp Fuel feeding device for fuel injection device
KR20010043873A (en) * 1998-05-28 2001-05-25 웰스 러셀 씨 Fuel rail damper
KR20010077049A (en) * 2000-01-31 2001-08-17 김영봉 damper for fuel supply system of a car

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JPH08270523A (en) * 1995-03-31 1996-10-15 Toyoda Gosei Co Ltd Fuel delivery pipe
JPH08303313A (en) * 1995-05-09 1996-11-19 Walbro Corp Fuel supply system for internal combustion engine
JPH1162749A (en) * 1997-08-08 1999-03-05 Keihin Corp Method for positioning and mounting pressure control valve
JPH11315923A (en) * 1998-02-09 1999-11-16 Robert Bosch Gmbh Pressure buffer for pressure container
KR20010043873A (en) * 1998-05-28 2001-05-25 웰스 러셀 씨 Fuel rail damper
JP2000274332A (en) * 1999-03-19 2000-10-03 Keihin Corp Fuel feeding device for fuel injection device
KR20010077049A (en) * 2000-01-31 2001-08-17 김영봉 damper for fuel supply system of a car

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190077988A (en) 2017-12-26 2019-07-04 (주)모토닉 Damping device for reducing fuel pulsation of gas engine
KR20200011762A (en) 2018-07-25 2020-02-04 (주)모토닉 Damping device for reducing pulsation of fuel rail

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