KR100655711B1 - Fuel pulsation reduction damper - Google Patents

Fuel pulsation reduction damper Download PDF

Info

Publication number
KR100655711B1
KR100655711B1 KR1020050075707A KR20050075707A KR100655711B1 KR 100655711 B1 KR100655711 B1 KR 100655711B1 KR 1020050075707 A KR1020050075707 A KR 1020050075707A KR 20050075707 A KR20050075707 A KR 20050075707A KR 100655711 B1 KR100655711 B1 KR 100655711B1
Authority
KR
South Korea
Prior art keywords
damper
delivery pipe
plug
fuel
press
Prior art date
Application number
KR1020050075707A
Other languages
Korean (ko)
Inventor
전동식
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020050075707A priority Critical patent/KR100655711B1/en
Application granted granted Critical
Publication of KR100655711B1 publication Critical patent/KR100655711B1/en

Links

Images

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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/07—Facilitating assembling or mounting
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • 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 fuel pulsation reduction damper is provided to allow for ease assembly of engine and improve resistance against vibration by press-fitting the damper into a damper plug so that the total length of a delivery pipe is shortened. A fuel pulsation reduction damper comprises a damper plug(10), a damper(20), and a sealing member. The damper plug has one side where an indentation portion to be press-fit into one end of a delivery pipe(11) is formed, and the other side where a plurality of curling portions are formed so that the curling portions are protruded in a circumferential direction. The damper is inserted into the damper plug and fixed at the curling portions by being transformed into a ring shape by forces applied from an external source. The sealing member is mounted on the damper so as to prevent leakage of fuel of the delivery pipe.

Description

연료 맥동 저감 댐퍼{FUEL PULSATION REDUCTION DAMPER}FUEL PULSATION REDUCTION DAMPER}

도 1은 본 발명의 바람직한 실시예에 따른 연료 맥동 저감 댐퍼를 개략적으로 도시한 도면.1 is a view schematically showing a fuel pulsation damper damper according to a preferred embodiment of the present invention.

도 2는 도 1의 분해 사시도.2 is an exploded perspective view of FIG.

도 3은 도 1의 A-A 선 단면도.3 is a cross-sectional view taken along the line A-A of FIG.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10...댐퍼 플러그 11...딜리버리 파이프10 ... damper plug 11 ... delivery pipe

13...압입부 17...컬링부13 Press-fit part 17 Curling part

20...댐퍼 21...실링부재20 ... damper 21 ... sealing member

본 발명은 연료 맥동 저감 댐퍼에 관한 것으로, 보다 상세하게는 딜리버리 파이프에 댐퍼의 압입 결합이 가능하도록 하여, 딜리버리 파이프의 전체 길이가 짧아지도록 하여, 내진동 신뢰성이 향상되며, 엔진의 조립성이 향상되도록 하는 연료 맥동 저감 댐퍼에 관한 것이다.The present invention relates to a fuel pulsation damper, and more particularly, to enable a press-fit coupling of a damper to a delivery pipe, to shorten the overall length of the delivery pipe, to improve vibration resistance, and to improve assembly of the engine. A fuel pulsation damper is provided.

일반적으로 엔진의 연료를 공급하는 딜리버리 파이프에 있어서, 연료가 리턴 되지 않는 타입의 딜리버리 파이프의 단부에는 댐퍼(DAMPER)가 장착된다.Generally, in a delivery pipe for supplying fuel for an engine, a damper (DAMPER) is mounted at an end of a delivery pipe of a type in which fuel is not returned.

상기 댐퍼는 연료의 맥동을 저감하도록 함으로써, 연료의 맥동 현상으로 인한 아이들 불안정과 같은 엔진의 이상 거동 현상의 발생을 방지하도록 한다. The damper reduces the pulsation of the fuel, thereby preventing occurrence of abnormal behavior of the engine such as idle instability due to the pulsation of the fuel.

상기 댐퍼의 장착은 댐퍼의 일 측에 기계가공에 의한 나사부를 만들어 딜리버리 파이프에 관통 나사이음으로 장착된다. 이러한 댐퍼의 나사부에는 연료의 누설을 방지하도록 하는 누설 방지물이 도포된다.Mounting of the damper is made of a threaded part by machining on one side of the damper is mounted as a through screw joint to the delivery pipe. The threaded portion of the damper is coated with a leakage preventing material to prevent leakage of fuel.

그러나, 종래 댐퍼의 장착을 위한 나사부의 형성시, 나사부의 토오크 관리의 부정확함이 발생되면, 나사부의 파손이 발생될 수 있는 문제점이 있다. 또한, 댐퍼의 나사부에 누설방지제의 도포시에 정확한 누설 방지제의 도포관리가 어려워, 누설방지제의 도포 불량에 의한 누설발생 및 암나사부에 과도한 토오크가 전달됨에 의한 2차 파손이 발생될 수 있는 문제점이 있다.However, when the screw portion for mounting the conventional damper is formed, if the torque management of the screw portion is inaccurate, there is a problem that the screw portion may be broken. In addition, it is difficult to accurately manage the application of the leakproof agent when the leakproof agent is applied to the threaded portion of the damper, so that leakage caused by poor application of the leakproof agent and secondary torque caused by excessive torque delivered to the female thread part may occur. have.

본 발명은 상기 전술한 바와 같은 문제점들을 해결하기 위해 창출된 것으로서, 딜리버리 파이프에 댐퍼의 압입 결합이 가능하도록 하여, 딜리버리 파이프의 전체 길이가 짧아지도록 하여, 내진동 신뢰성이 향상되며, 엔진의 조립성이 향상되도록 하는 연료 맥동 저감 댐퍼를 제공하는데 그 목적이 있다.The present invention has been made to solve the problems described above, it is possible to press the coupling of the damper to the delivery pipe, so that the overall length of the delivery pipe is shortened, vibration resistance is improved, the assembly of the engine It is an object of the present invention to provide a fuel pulsation damper that allows this to be improved.

상기 목적을 달성하기 위한 본 발명의 연료 맥동 저감 댐퍼는, 딜리버리 파이프에 장착되는 댐퍼에 있어서, 상기 딜리버리 파이프의 일단에 압입 장착되는 압입부가 일 측에 형성되며, 타 측에는 원주 방향으로 다수개 돌출된 컬링부가 형성 된 댐퍼 플러그; 상기 댐퍼 플러그에 삽입되며, 상기 컬링부에 외력의 작용에 의한 고리 형상의 변형됨으로 고정되는 댐퍼; 및 상기 댐퍼에 장착되며 상기 딜리버리 파이프의 연료의 누출을 방지하는 실링부재;를 구비하는 것을 특징으로 한다.The fuel pulsation damper of the present invention for achieving the above object is a damper mounted to a delivery pipe, the press-fitting portion is press-mounted to one end of the delivery pipe is formed on one side, the other side is protruded in a circumferential direction Damper plugs with curling portions; A damper inserted into the damper plug and fixed to the curled portion by deformation of an annular shape by an external force; And a sealing member mounted to the damper and preventing leakage of fuel of the delivery pipe.

본 발명에 있어서, 상기 컬링부는 상기 댐퍼 플러그의 외주면에 등간격으로 다수개 형성되어, 상기 댐퍼의 외주면에 결합되는 것을 특징으로 한다.In the present invention, the curling portion is formed on the outer circumferential surface of the damper plug a plurality of equal intervals, characterized in that coupled to the outer circumferential surface of the damper.

이하 본 발명의 바람직한 실시예에 따른 연료 맥동 저감 댐퍼를 첨부된 도면을 참조하여 상세히 설명한다. 그러나 본 발명은 이하에서 개시되는 실시예에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예는 본 발명의 개시가 완전하도록 하며, 통상의 지식을 가진자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이다.Hereinafter, a fuel pulsation damper according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you.

도 1은 본 발명의 바람직한 실시예에 따른 연료 맥동 저감 댐퍼를 개략적으로 도시한 도면이고, 도 2는 도 1의 분해 사시도이며, 도 3은 도 1의 A-A 선 단면도이다.1 is a view schematically showing a fuel pulsation damper damper according to a preferred embodiment of the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a cross-sectional view taken along line A-A of FIG.

도 1 내지 도 3에 도시된 바와 같이, 본 발명에 따른 연료 맥동 저감 댐퍼(100)는, 딜리버리 파이프에 장착되는 댐퍼에 있어서, 딜리버리 파이프(11)의 일단에 압입 장착되는 압입부(13)가 일 측에 형성되며 타 측에는 원주 방향으로 다수개 돌출된 컬링부(17)가 형성된 댐퍼 플러그(10)와, 댐퍼 플러그(10)에 삽입되며 컬링부(17)에 외력의 작용에 의한 고리 형상의 변형됨으로 고정되는 댐퍼(20)와, 댐퍼(20)에 장착되며 딜리버리 파이프(11)의 연료의 누출을 방지하는 실링부재(21)를 구비한다.As shown in FIGS. 1 to 3, the fuel pulsation damping damper 100 according to the present invention includes a press-fit part 13 which is press-fitted to one end of the delivery pipe 11 in the damper mounted to the delivery pipe. It is formed on one side and the damper plug 10 is formed with a plurality of curling portion 17 protruding in the circumferential direction, and inserted into the damper plug 10 of the annular shape by the action of an external force on the curling portion 17 It is provided with a damper 20 is fixed to the deformed, and the sealing member 21 mounted on the damper 20 to prevent the leakage of fuel in the delivery pipe (11).

상기 댐퍼 플러그(10)는 딜리버리 파이프(11)의 일단에 압입 장착된다. 상기 딜리버리 파이프(11)는 연료를 엔진에 공급하도록 하는 것으로서, 그 일단에는 댐퍼(20)의 결합을 위한 댐퍼 플러그(10)가 압입된다.The damper plug 10 is press-fit to one end of the delivery pipe 11. The delivery pipe 11 is to supply fuel to the engine, and a damper plug 10 for coupling the damper 20 is press-fitted at one end thereof.

상기 댐퍼 플러그(10)는 도 2에 도시된 바와 같이, 일 측에는 딜리버리 파이프(11)에 압입되는 압입부(13)가 형성되며, 타 측에는 직경 방향으로 확장된 확장부(15)가 형성되며, 확장부(15)의 외측으로는 돌출된 컬링부(17)가 마련된다. 상기 댐퍼 플러그(10)의 타 측에는 댐퍼(20)가 장착된다.As shown in FIG. 2, the damper plug 10 has a press-fitting part 13 press-fitted to the delivery pipe 11, and an extension part 15 extending in the radial direction is formed at the other side. A protruding curling portion 17 is provided outside the expansion portion 15. The damper 20 is mounted on the other side of the damper plug 10.

상기 댐퍼(20)는 댐퍼 플러그(10)의 타 측에 장착되는 것으로서, 확장부(15)의 컬링부(17)의 압입으로 결합된다. 즉, 상기 컬링부(17)는 외력에 의해 고리 형상으로 변형 가능한 것으로서, 댐퍼 플러그(10)의 타 측으로 댐퍼(20)의 삽입이 이루어지면 작업자는 외력을 가함으로 컬링부(17)가 고리 형상으로 변형되도록 함으로써, 댐퍼(20)와 댐퍼 플러그(10)의 결합이 가능하도록 한다. 즉, 상기 댐퍼(20)는 딜리버리 파이프(11)에 댐퍼 플러그(10)의 개재로 종래 나사 결합을 대체하여 결합되는 것이다. 여기서 댐퍼(20)는 딜리버리 파이프(11)에 압입 결합으로 결합 및 컬링부(17)의 걸림 작동으로 결합됨으로, 댐퍼(20)와 딜이버리 파이프(11)의 결합을 위한 종래 나사부의 삭제가 가능하여, 딜리버리 파이프(11)의 전체 길이가 짧아짐이 가능하다. 이러한 딜리버리 파이프(11)의 전체 길이의 짧아짐이 가능하여 엔진의 조립 편의성이 향상되며, 내진동 신뢰성의 향상이 가능하다. 상기 댐퍼(20)에는 연료의 누출을 방지하는 실링부재(21)가 구비된다.The damper 20 is mounted on the other side of the damper plug 10, and is coupled by indentation of the curling part 17 of the expansion part 15. That is, the curling part 17 is deformable in an annular shape by an external force. When the damper 20 is inserted into the other side of the damper plug 10, the curling part 17 is annular by applying an external force. By being deformed into, the damper 20 and the damper plug 10 can be coupled. That is, the damper 20 is coupled to the delivery pipe 11 by replacing the conventional screw coupling through the damper plug 10. Here, the damper 20 is coupled to the delivery pipe 11 by press-fitting and engaging by the locking operation of the curling unit 17, so that the conventional screw portion for coupling the damper 20 and the delivery pipe 11 is eliminated. As a result, the entire length of the delivery pipe 11 can be shortened. The overall length of the delivery pipe 11 can be shortened, thereby improving assembly convenience of the engine and improving vibration resistance. The damper 20 is provided with a sealing member 21 to prevent the leakage of fuel.

상기 실링부재(21)는 댐퍼(20)에 장착되어 딜리버리 파이프(11)에서 이동되 는 연료의 외부 누출을 방지하도록 한다. 상기 실링부재(21)는 0-RING으로 구비 가능하다. The sealing member 21 is mounted to the damper 20 to prevent the external leakage of the fuel that is moved in the delivery pipe (11). The sealing member 21 may be provided with a 0-ring.

상기의 구성을 갖는 본 발명에 따른 연료 맥동 저감 댐퍼의 작용을 설명한다.The operation of the fuel pulsation damper damper according to the present invention having the above configuration will be described.

엔진에 연료의 이동이 이루어지는 딜리버리 파이프(11)의 일단에 댐퍼 플러그(10)를 압입 결합한다.The damper plug 10 is press-fitted to one end of the delivery pipe 11 where fuel is moved to the engine.

다음, 상기 댐퍼 플러그(10)에 댐퍼(20)의 삽입이 이루어지도록 한다. 그리고 댐퍼 플러그(10)의 외주면에 형성된 컬링부(17)에 외력을 가하여, 컬링부(17)의 고리 형상으로의 변형이 발생되도록 함으로써, 컬링부(17)의 걸림 작용으로 댐퍼(20)와 댐퍼 플러그(10)의 결합이 가능하도록 한다. 상기 댐퍼(20)에는 실링부재(21)가 장착되어 연료의 누출이 발생되지 않도록 한다. 상기 실링부재(21)는 O-RING으로 구비되어 연료의 누출을 방지하도록 한다. 이러한 댐퍼 플러그(10)의 댐퍼(20)와의 압입 결합으로 종래 나사 결합에 의한 장착보다 장착 길이가 짧아짐이 가능함으로써, 딜리버리 파이프(11)의 전체 길이가 작아져 엔진의 조립 편의성이 향상된다. Next, the damper 20 is inserted into the damper plug 10. In addition, by applying an external force to the curling portion 17 formed on the outer circumferential surface of the damper plug 10 so that deformation of the curling portion 17 into a ring shape occurs, the damping portion 20 and the damping action of the curling portion 17 are generated. To allow the damper plug 10 to be coupled. The damper 20 is mounted with a sealing member 21 to prevent leakage of fuel. The sealing member 21 is provided with an O-ring to prevent leakage of fuel. By the press-fit coupling of the damper plug 10 with the damper 20, the mounting length can be shorter than that of the conventional screw coupling, so that the overall length of the delivery pipe 11 is reduced and the assembly convenience of the engine is improved.

상기와 같은 본 발명에 따른 연료 맥동 저감 댐퍼는 다음과 같은 효과를 갖는다.The fuel pulsation damper damper according to the present invention as described above has the following effects.

댐퍼의 댐퍼 플러그와의 압입 결합으로 딜리버리 파이프의 전체 길이가 짧아 지도록 함으로써, 엔진의 조립 편의성이 향상되며 내진동 신뢰성이 향상된다.By press-fitting the damper with the damper plug, the overall length of the delivery pipe is shortened, thereby improving the assembly convenience of the engine and improving vibration resistance.

이상, 본 발명을 도면에 도시된 실시예를 참조하여 설명하였다. 그러나, 본 발명은 이에 한정되지 않고 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명과 균등한 범위에 속하는 다양한 변형예 또는 다른 실시예가 가능하다. 따라서, 본 발명의 진정한 보호범위는 이어지는 특허청구범위에 의해 정해져야 할 것이다.The present invention has been described above with reference to the embodiments shown in the drawings. However, the present invention is not limited thereto, and various modifications or other embodiments falling within the scope equivalent to the present invention are possible by those skilled in the art. Therefore, the true scope of protection of the present invention should be defined by the following claims.

Claims (2)

딜리버리 파이프에 장착되는 댐퍼에 있어서,In the damper mounted on the delivery pipe, 상기 딜리버리 파이프의 일단에 압입 장착되는 압입부가 일 측에 형성되며, 타 측에는 원주 방향으로 다수개 돌출된 컬링부가 형성된 댐퍼 플러그;A damper plug having a press-fitting part mounted on one end of the delivery pipe at one side, and having a curling part protruding in a circumferential direction on the other side thereof; 상기 댐퍼 플러그에 삽입되며, 상기 컬링부에 외력의 작용에 의한 고리 형상의 변형됨으로 고정되는 댐퍼; 및A damper inserted into the damper plug and fixed to the curled portion by deformation of an annular shape by an external force; And 상기 댐퍼에 장착되며 상기 딜리버리 파이프의 연료의 누출을 방지하는 실링부재;를 구비하는 것을 특징으로 하는 연료 맥동 저감 댐퍼.And a sealing member mounted to the damper to prevent leakage of the fuel of the delivery pipe. 제1항에 있어서,The method of claim 1, 상기 컬링부는 상기 댐퍼 플러그의 외주면에 등간격으로 다수개 형성되어, 상기 댐퍼의 외주면에 결합되는 것을 특징으로 하는 연료 맥동 저감 댐퍼.The curling portion is formed on the outer peripheral surface of the damper plug a plurality of equal intervals, fuel pulsation reduction damper, characterized in that coupled to the outer peripheral surface of the damper.
KR1020050075707A 2005-08-18 2005-08-18 Fuel pulsation reduction damper KR100655711B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020050075707A KR100655711B1 (en) 2005-08-18 2005-08-18 Fuel pulsation reduction damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050075707A KR100655711B1 (en) 2005-08-18 2005-08-18 Fuel pulsation reduction damper

Publications (1)

Publication Number Publication Date
KR100655711B1 true KR100655711B1 (en) 2006-12-08

Family

ID=37732683

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020050075707A KR100655711B1 (en) 2005-08-18 2005-08-18 Fuel pulsation reduction damper

Country Status (1)

Country Link
KR (1) KR100655711B1 (en)

Cited By (4)

* 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
KR20210026632A (en) 2019-08-30 2021-03-10 (주)모토닉 Damper device for reducing pulsation of fuel delivery pipe
KR20220028820A (en) 2020-08-31 2022-03-08 (주)모토닉 Device for reducing delivery pipe pulsation of fuel system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001193598A (en) 1999-12-28 2001-07-17 Keihin Corp Pulsation damping device in fuel distribution pipe
JP2001311494A (en) 2000-04-28 2001-11-09 Kyosan Denki Co Ltd Pulsation attenuation device and its manufacturing method
JP2003003926A (en) 2001-06-25 2003-01-08 Piolax Inc Fuel delivery pipe with pulsation damper
JP2005076478A (en) 2003-08-28 2005-03-24 Otics Corp Delivery pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001193598A (en) 1999-12-28 2001-07-17 Keihin Corp Pulsation damping device in fuel distribution pipe
JP2001311494A (en) 2000-04-28 2001-11-09 Kyosan Denki Co Ltd Pulsation attenuation device and its manufacturing method
JP2003003926A (en) 2001-06-25 2003-01-08 Piolax Inc Fuel delivery pipe with pulsation damper
JP2005076478A (en) 2003-08-28 2005-03-24 Otics Corp Delivery pipe

Cited By (4)

* 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
KR20210026632A (en) 2019-08-30 2021-03-10 (주)모토닉 Damper device for reducing pulsation of fuel delivery pipe
KR20220028820A (en) 2020-08-31 2022-03-08 (주)모토닉 Device for reducing delivery pipe pulsation of fuel system

Similar Documents

Publication Publication Date Title
US10670175B2 (en) Plug connector for fluid lines, comprising an inner adapter sleeve
KR100597190B1 (en) Tube Joint
JP4145123B2 (en) Fitting
JP4906973B1 (en) Pipe fitting
US20060220380A1 (en) Piping joint device and manufacturing method thereof
KR100655711B1 (en) Fuel pulsation reduction damper
WO2017094171A1 (en) Shaft coupling
KR960006181B1 (en) Slender pipe connector
JP2006144972A (en) Vibration absorbing bush installation structure
JP4853633B2 (en) Sealing device
CN115703218A (en) Impact rotary tool
JP3492503B2 (en) Pipe fittings
KR20140134700A (en) Plug-in connection system, in particular for fluidic lines, fittings or assemblies
JP2020092515A (en) Cable gland
JP6594055B2 (en) Gasket unit and spherical joint unit
JP6656998B2 (en) Manufacturing method of fuel delivery pipe
JP7489185B2 (en) Press-fit collar structure
JP2020172954A (en) Dust-proof cap, attachment structure of the same, and attachment method of the same
JPH11223288A (en) Structure of fitting
KR102120723B1 (en) Different-Material Hose Connection Socket Assembling structure for Vehicle
CN214836613U (en) Engine oil filter
US11988305B2 (en) Fluid connector including internal retaining clip
JP2005076477A (en) Delivery pipe
JP2009079722A (en) Cylindrical vibration control device
JP4387993B2 (en) Piping joint

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20121130

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20131129

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20141128

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee