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KR101628560B1 - Fuel rail having noise and vibration reducing structure - Google Patents

Fuel rail having noise and vibration reducing structure Download PDF

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Publication number
KR101628560B1
KR101628560B1 KR1020140174621A KR20140174621A KR101628560B1 KR 101628560 B1 KR101628560 B1 KR 101628560B1 KR 1020140174621 A KR1020140174621 A KR 1020140174621A KR 20140174621 A KR20140174621 A KR 20140174621A KR 101628560 B1 KR101628560 B1 KR 101628560B1
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South Korea
Prior art keywords
fuel
damper
socket
flow path
injector
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Korean (ko)
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구광원
강영일
오연지
윤성현
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주식회사 현대케피코
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/01—Arrangement of fuel conduits
    • 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
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The present invention relates to a fuel rail having a structure for reducing noise and vibration. The fuel rail having a structure for reducing noise and vibration comprises: a fuel transport pipe having a flow passage formed on the inside thereof, in which fuel flows, and a connection hole formed on an outer circumferential surface thereof, to which a plurality of injectors are connected; a socket having a flow passage disposed on the inside thereof and connected to the connection hole, and a mounting groove connected to the flow passage, in which the injectors are mounted; and a damper inserted into the mounting groove while forming a portion of the flow passage connected to the mounting groove and mounted on the inside of the socket to reduce noise and vibration produced when the fuel flows. Therefore, the damper is disposed on the inside of the socket having the flow passage of a rectangular shape to reduce an impact by a flow of the fuel in the flow passage in which the fuel flows to prevent vibration and noise produced by the flow of the fuel.

Description

소음 및 진동 저감 구조를 갖는 연료레일 {FUEL RAIL HAVING NOISE AND VIBRATION REDUCING STRUCTURE}FIELD OF THE INVENTION [0001] The present invention relates to a fuel rail,

본 발명은 연료레일에 관한 것으로, 더욱 상세하게는 연료레일에서 인젝터가 결합되는 소켓과 연료레일 사이에 댐핑수단을 구비하여 인젝터를 통해 분사되는 연료에 의한 충격을 저감시키길 수 있는 소음 및 진동 저감구조를 갖는 연료레일에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel rail, and more particularly, to a fuel rail, which is provided with a damping means between a fuel rail and a socket to which an injector is coupled, thereby reducing the impact of fuel injected through the injector. To the fuel rail.

일반적으로, 자동차의 연료탱크로부터 펌핑되어 일정한 압력으로 압송되는 연료는 연료레일에 유입되어 엔진의 각 실린더로 분사되는데, 리턴 연료공급장치에서는 일측에 연료탱크로부터 연료가 진입되는 유입구가 마련되고, 엔진의 각 실린더로 연료를 공급하는 다수의 유출구가 마련되는 연료레일에서 엔진으로 분사되고 남은 연료가 압력 레귤레이터를 통해 다시 연료탱크로 회수된다.Generally, the fuel pumped from the fuel tank of the automobile and pumped at a constant pressure is introduced into the fuel rail and injected into each cylinder of the engine. In the return fuel supply device, an inlet through which fuel enters from the fuel tank is provided, And the remaining fuel is injected into the engine at the fuel rail where a plurality of outlets for supplying fuel to each cylinder of the cylinder are provided, and the remaining fuel is returned to the fuel tank through the pressure regulator.

최근에는 연료레일의 일측에 압력을 제어하여 잉여연료를 연료탱크로 회수할 수 있도록 하는 압력 레귤레이터가 장착되지 않는 리턴레스 연료공급장치가 많이 사용되고 있다.BACKGROUND ART [0002] In recent years, a returnless fuel supply apparatus is often used in which a pressure regulator is not equipped to control the pressure on one side of a fuel rail to recover surplus fuel to a fuel tank.

이러한 종래의 연료레일이 도 1과 도 2에 도시되어 있다. These conventional fuel rails are shown in Figs. 1 and 2. Fig.

도시된 바와 같이, 종래의 연료레일(10)은 연료를 안내하는 위한 연료 이송관(20), 연료 이송관(20)의 양단부에 결합되는 엔드캡(30), 연료 이송관(20)의 외주면에 돌출 형성되며 인젝터(50)가 결합되는 소켓(40)을 포함한다. As shown in the drawing, the conventional fuel rail 10 includes a fuel transfer pipe 20 for guiding fuel, an end cap 30 coupled to both ends of the fuel transfer pipe 20, And a socket 40 to which the injector 50 is coupled.

연료 이송관(20)는 양단부로 관통되는 파이프 형상으로 내측에 연료가 흐르는 유로가 형성되며, 양단부가 엔드캡(30)에 의해 폐쇄된다.The fuel transfer pipe (20) is formed in a pipe shape passing through both ends, and a flow path through which fuel flows inward is formed, and both ends are closed by the end cap (30).

소켓(40)은 엔진의 각 실린더로 연료를 분사하기 위한 인젝터(50)가 각각 결합하기 위한 것으로 복수로 구성된다. 그리고 소켓(40)은 인젝터(50)가 끼워져 결합되도록 개구된 입구가 마련되고, 개구된 입구가 연료 이송관(20)의 내측 유로로 연통되도록 형성된다.The socket 40 is constituted by a plurality of injectors 50 for injecting fuel into respective cylinders of the engine, respectively. The socket 40 is provided with an inlet opened to be engaged with the injector 50, and the opened inlet is formed so as to communicate with the inner flow path of the fuel transfer pipe 20.

상기와 같은 종래의 연료레일(10)은, 인젝터(50)를 결합하는 소켓(40)과 연료 이송관(20)의 내측 구조를 보면, 연료 이송관(20)의 유로(21)에서 소켓(40)의 유로(41)가 서로 직각 형태를 이루고, 소켓(40)과 인젝터(50)의 유로 구조도 직각 형태를 이루게 되므로, 이러한 직각 형태의 유로로 인하여 연료가 흐를 때, 소음과 진동이 발생되는 문제점이 있었다.The conventional fuel rail 10 has a structure in which the inner surface of the socket 40 connecting the injector 50 and the inner surface of the fuel feed pipe 20 is connected to the socket 21 of the fuel feed pipe 20 The flow path of the sockets 40 and the injector 50 forms a rectangular shape so that noise and vibration are generated when the fuel flows due to such a rectangular flow path. .

한국 공개특허공보 1999-0022714 (1999.03.25.)Korean Unexamined Patent Application Publication No. 1999-0022714 (Mar. 25, 1999)

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출한 것으로, 연료가 직각 형태의 유로를 지날 때 연료의 흐름을 부드럽게 하면서 연료의 흐름에 따른 압력을 저감시켜 연료레일에서 소음과 진동이 발생되는 것을 방지할 수 있도록 한 소음 및 진동 저감 구조를 갖는 연료레일을 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a fuel rail which is capable of reducing noise, And a fuel rail which has a noise and vibration reduction structure for preventing the noise and vibration.

상기와 같은 목적을 달성하기 위한 본 발명은, 내측에 연료가 흐르는 유로가 형성되고, 외주면에 복수의 인젝터가 연결되는 연결홀이 형성되는 연료 이송관과, 내측에 연결홀에 연결되는 유로가 구비되고, 유로에 연결되고 인젝터가 결합하기 위한 결합홈이 형성되는 소켓과, 결합홈에 연결되는 유로의 일부를 형성하면서 결합홈에 끼워져 소켓의 내측에 결합되어, 연료가 유로를 흐를 때 발생되는 소음과 진동을 저감시키는 댐퍼를 포함하되, 댐퍼는, 결합홈에 결합되는 인젝터를 향하는 면에는 인젝터에 의해 마모되는 것을 방지하기 위한 보강부재가 구비되고, 보강부재는 인젝터의 단부에 마주하는 면에 구비되되, 인젝터에 접촉되지 않도록 댐퍼의 평면부의 하부면에서 일정거리 이격되는 내측에 댐퍼와 일체로 성형되는 것을 것을 특징으로 한다.According to an aspect of the present invention, there is provided a fuel supply system including: a fuel transfer tube having a passage through which fuel flows and a plurality of injectors connected to the outer circumference of the fuel transfer tube; A socket which is connected to the flow path and in which an engaging groove for engaging the injector is formed; and a noise absorbing member which is inserted into the engaging groove and forms a part of the flow path connected to the engaging groove, And a damper for reducing vibrations. The damper has a reinforcing member for preventing the damper from being worn by the injector on the surface facing the injector coupled to the coupling groove. The reinforcing member is provided on the surface facing the end of the injector And is formed integrally with the damper on the inner side spaced a certain distance from the lower surface of the plane portion of the damper so as not to contact the injector.

또한, 댐퍼는, 반구형이나 원뿔 형상으로 형성되되, 개구부가 평면부와 곡면부인 측면에 각각 형성되어 서로 연결되어 직각 형상의 유로로 형성되는 것을 특징으로 한다. The damper is formed in a hemispherical shape or a conical shape, and the opening is formed in a plane portion and a curved surface portion, respectively, and connected to each other to form a rectangular channel.

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본 발명에 따르면, 연료가 흐르는 유로에서 직각 형상의 유로가 구비되는 소켓 내측에 연료의 흐름에 의한 충격을 저감시키기 위한 댐퍼가 구비됨으로써, 연료레일에서 연료가 직각 형상의 유로를 흐를 때 진동과 소음이 발생되는 것을 방지할 수 있다.According to the present invention, since the damper for reducing the impact caused by the flow of the fuel is provided inside the socket provided with the right-angle flow path in the flow path for the fuel, when the fuel flows in the right-angle flow path, Can be prevented from being generated.

도 1은 종래의 연료레일을 도시한 사시도.
도 2는 도 1의 연료레일에서 소켓과 연료 이송관의 유로구조를 도시한 단면도.
도 3은 본 발명의 일실시예에 따른 연료레일을 도시한 단면도.
도 4는 도 3의 연료레일에서 댐핑부재를 도시한 사시도.
도 5는 도 4의 댐핑부재를 도시한 단면도.1 is a perspective view showing a conventional fuel rail;
Fig. 2 is a cross-sectional view showing a flow path structure of a socket and a fuel transfer pipe in the fuel rail of Fig. 1; Fig.
3 is a cross-sectional view of a fuel rail according to one embodiment of the present invention.
Fig. 4 is a perspective view showing the damping member in the fuel rail of Fig. 3; Fig.
5 is a cross-sectional view of the damping member of Fig.

본 발명의 실시를 위한 구체적인 실시예를 첨부된 도면들을 참조하여 설명한다. 이러한 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로써, 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

도 3은 본 발명의 일실시예에 따른 연료레일을 도시한 단면도이고, 도 4는 도 3의 연료레일에서 댐핑부재를 도시한 사시도이며, 도 5는 도 4의 댐핑부재를 도시한 단면도이다. FIG. 3 is a cross-sectional view showing a fuel rail according to an embodiment of the present invention, FIG. 4 is a perspective view showing a damping member in the fuel rail of FIG. 3, and FIG. 5 is a sectional view showing the damping member of FIG.

먼저, 연료레일(100)은, 일정길이로 형성되되 양단부가 관통되는 파이프 형상으로 형성되어 연료 이송관(110), 연료 이송관(110)의 양단부에 결합되는 엔드캡, 연료 이송관(110)의 외주면에 구비되며 연료를 분사하는 인젝터(200)가 결합되는 소켓(130)을 포함한다.The fuel rail 100 includes a fuel delivery pipe 110, an end cap coupled to both ends of the fuel delivery pipe 110, a fuel delivery pipe 110, And a sump 130 to which an injector 200 injecting fuel is coupled.

연료 이송관(110)는 양단부가 관통되는 파이프 형상의 부재가 일정길이로 형성된다. 즉, 연료 이송관(110)는 내측에 연료가 흐르는 유로(111)를 형성하는 공간이 구비된다. 연료 이송관(110)는 외주부에 내측 공간의 유로(111)와 후술하는 소켓(130)의 유로(131)가 연결되도록 하는 복수의 연결홀(112)이 형성된다. 여기서 연결홀(112)은 연료레일(100)이 설치되는 엔진의 실린더 숫자와 동일한 숫자로 형성되는 것이 바람직하다.The fuel conveyance pipe 110 is formed with a pipe-shaped member having a predetermined length through which both ends are passed. That is, the fuel transfer pipe 110 is provided with a space for forming a flow path 111 through which fuel flows. A plurality of connection holes 112 are formed in the outer circumferential portion of the fuel transfer pipe 110 to connect the flow path 111 of the inner space and the flow path 131 of the socket 130 to be described later. Here, the connection hole 112 is preferably formed in the same number as the cylinder number of the engine in which the fuel rail 100 is installed.

엔드캡(미도시)은 연료 이송관(110)의 개구된 양단부에 결합되어 연료 이송관(110)의 개구를 막아 폐쇄하며, 연료 이송관(110)의 양단부에 용접 고정된다.An end cap (not shown) is coupled to both open ends of the fuel feed pipe 110 to close and close the opening of the fuel feed pipe 110, and is welded to both ends of the fuel feed pipe 110.

소켓(130)은 연료 이송관(110)의 외주면에 일체로 형성되거나 별도로 형성되어 연료 이송관(110)의 외주면에 고정될 수 있다. 소켓(130)은 인젝터(200)가 연결하는 부분과 연료 이송관(110)에 연결되는 부분이 관통되어 연료가 흐르는 유로(131)를 형성한다. 본 발명의 일실시예에서의 소켓(130)은 별도로 형성되어 연료 이송관(110)에 고정된 것을 예로서 설명하기로 한다. The socket 130 may be integrally formed on the outer circumferential surface of the fuel transfer pipe 110 or may be separately formed and fixed to the outer circumferential surface of the fuel transfer pipe 110. The socket 130 connects the injector 200 and the fuel transfer pipe 110 to form a flow path 131 through which the fuel flows. The socket 130 in the embodiment of the present invention is separately formed and fixed to the fuel transfer pipe 110 as an example.

소켓(130)의 내측에는 인젝터(200)가 단부가 연결되는 결합홈(132)과, 연료 이송관(110)에서 결합홈(132)에 결합되는 인젝터(200)로 연료를 안내하는 유로(131)가 형성된다. 즉, 소켓(130)의 내측에 형성된 결합홈(132)과 유로(131)를 서로 연통된다.The fuel injector 200 includes a coupling groove 132 through which the injector 200 is connected to the inside of the socket 130 and a flow path 131 for guiding the fuel to the injector 200 coupled to the coupling groove 132 in the fuel transfer pipe 110. Is formed. That is, the coupling groove 132 formed in the inside of the socket 130 and the flow path 131 communicate with each other.

이 유로(131)는 연료 이송관(110)와 소켓(130)의 입구에 설치되는 인젝터(200) 사이에 연결되어 연료를 가이드하도록 형성되며, 도 3과 같이, 직각 형상으로 형성된다. 따라서 연료가 직각 부분과 같은 유로(141)를 지날 때 소음이 발생하게 된다.The flow path 131 is connected between the fuel transfer pipe 110 and the injector 200 installed at the inlet of the socket 130 to guide the fuel and is formed in a rectangular shape as shown in FIG. Therefore, noise occurs when the fuel passes through the oil passage 141 such as a right angle portion.

이러한 직각 형상의 유로를 연료가 지날 때 발생되는 소음을 방지하고자 본 발명의 일실시예에 따른 연료레일(100)은 소켓(130)의 내측에 구비되어 직각 형태의 유로를 지나는 연료로부터 발생되는 충격과 소음을 저감시키기 위한 댐퍼(140)를 더 포함한다. The fuel rail 100 according to an embodiment of the present invention is provided inside the socket 130 so as to prevent noise generated when the fuel passes through the right angle path, And a damper 140 for reducing noise.

댐퍼(140)는 도 3과 같이, 인젝터(200)가 결합되는 결합홈(132)과 소켓(130) 내측에 구비되는 유로(131) 사이에서 결합홈(132)의 위쪽에 직각 형상의 유로를 형성하는 부분에 구비된다.3, the damper 140 has a rectangular flow path between the coupling groove 132 to which the injector 200 is coupled and the flow passage 131 provided inside the socket 130, As shown in Fig.

댐퍼(140)는 별도의 물품으로 형성되며, 내측에 직각 형태의 유로(141)가 형성되되, 이 직각 형태의 유로(141)가 소켓(130)의 내측에 구비되는 유로(131)에 연결된다. 댐퍼(140)는 연료가 유로(141)를 흐를 때 발생되는 충격을 저감시키기 위하여 탄성력을 갖는 고무 재질로 형성되며, 사출 성형으로 형성된다.The damper 140 is formed as a separate article and has a right angle flow path 141 formed inside thereof and connected to a flow path 131 provided inside the socket 130 . The damper 140 is formed of a rubber material having an elastic force to reduce the impact generated when the fuel flows through the flow path 141, and is formed by injection molding.

상기 연료 이송관(110)와 소켓(130)은 금속 재질로 형성되며, 연료 이송관(110)에 소켓(130)이 용접에 의해 고정된다. 반면에 상기 댐퍼(140)는 고무재질로 형성됨으로 이 댐퍼(140)는 소켓(130)의 내측에 결합될 때 본드와 같은 접착제로 결합된다. The fuel transfer pipe 110 and the socket 130 are made of a metal material and the socket 130 is fixed to the fuel transfer pipe 110 by welding. On the other hand, the damper 140 is formed of a rubber material so that the damper 140 is coupled with an adhesive such as a bond when the damper 140 is coupled to the inside of the socket 130.

댐퍼(140)는 소켓(130)에 결합시 소켓(130)의 입구 즉, 결합홈(132)을 통하여 소켓(130)의 내측에 결합되며, 대략 반구나 원뿔 형상으로 형성된다. 댐퍼(140)는 평면부인 하부에 하나의 개구가 형성되고, 곡면부인 측면에 다른 개구가 형성되어 서로 연결되어 소켓(130)의 유로(131) 중 직각 형상의 유로를 형성한다. The damper 140 is coupled to the inside of the socket 130 through the opening of the socket 130 when the socket 130 is coupled to the socket 130. The damper 140 is formed in a substantially semicircular or conical shape. The damper 140 has one opening at the lower portion of the plane portion and another opening is formed at the side of the curved portion to be connected to each other to form a right channel of the flow path 131 of the socket 130.

댐퍼(140)는 소켓(130) 내에 결합될 때, 결합홈(132)과 연결되는 형태로 결합되어, 소켓(130)의 결합홈(132)에 인젝터(200)가 결합될 때, 인젝터(200)의 단부가 댐퍼(140)의 평면부인 하부에 접촉된다.When the injector 200 is coupled to the coupling groove 132 of the socket 130, the damper 140 is coupled to the coupling groove 132 when the injector 200 Is in contact with the lower portion of the plane of the damper 140.

한편, 댐퍼(140)는 인젝터(200)가 접촉되는 댐퍼(140)의 평면부인 하부에 금속재질로 형성되는 보강부재(150)를 더 포함한다. The damper 140 further includes a reinforcing member 150 formed of a metal material at a lower portion of a plane of the damper 140 to which the injector 200 contacts.

이 보강부재(150)는 댐퍼(140)의 사출 성형시 인서트 성형으로 댐퍼(140)에 일체로 성형된다. 보강부재(150)는 소켓(130)의 결합홈(132)에 인젝터(200)가 결합될 때, 인젝터(200)의 단부에 접촉되도록 댐퍼(140)의 평면부인 하부에 구비되어 인젝터(200)에 의해 댐퍼(140)가 마모되는 것을 방지한다.The reinforcing member 150 is formed integrally with the damper 140 by insert molding at the time of injection molding of the damper 140. The reinforcing member 150 is disposed at a lower portion of the plane of the damper 140 so as to contact the end of the injector 200 when the injector 200 is coupled to the coupling groove 132 of the socket 130, Thereby preventing the damper 140 from being worn.

보강부재(150)는 도 5에 도시된 바와 같이, 댐퍼(140)의 평면부인 하부에 구비되되, 하부면에서 일정두께 이격되어 댐퍼(140)의 내측에 구비된다.
As shown in FIG. 5, the reinforcing member 150 is provided at a lower portion of the plane of the damper 140, and is disposed inside the damper 140 with a predetermined thickness spaced from the lower surface.

상기와 같은 구성을 갖는 본 발명의 일실시예에 따른 연료레일에 대한 작용을 간략하게 설명하기로 한다.The operation of the fuel rail according to an embodiment of the present invention having the above-described structure will be briefly described.

먼저, 연료레일에서 그 구성품인 연료 이송관(110), 소켓(130), 댐퍼(140), 보강부재는 각각 제작되어 준비된다. First, a fuel feed pipe 110, a socket 130, a damper 140, and a reinforcing member, which are components of the fuel rail, are prepared and prepared.

먼저, 보강부재(150)는 별도로 성형한 후에, 댐퍼(140)의 성형시 즉, 댐퍼(140)의 사출 성형시 댐퍼(140)와 함께 인서트 성형으로 댐퍼(140)에 일체로 성형한다.First, after the reinforcing member 150 is separately molded, the damper 140 is molded integrally with the damper 140 at the time of molding the damper 140, that is, insert molding with the damper 140 during injection molding of the damper 140.

이후에, 댐퍼(140)를 소켓(130)에 결합하게 되는데, 소켓(130)의 내측에 결합하여야 하는데, 소켓(130)의 하부 즉, 결합홈(132)의 입구를 통해서 댐퍼(140)를 소켓(130)의 결합홈(132)으로 넣어서 결합한다. 여기서, 댐퍼(140)를 소켓(130)의 결합홈(132)에 넣기 전에 댐퍼(140)의 외주면에 접착제를 도포하거나 소켓(130)의 내측에서 댐퍼(140)가 결합되는 부분에 접착제를 도포한다.The damper 140 is coupled to the socket 130 and must be coupled to the inside of the socket 130 so that the damper 140 is inserted through the lower portion of the socket 130, Into the coupling groove (132) of the socket (130). Before the damper 140 is inserted into the coupling groove 132 of the socket 130, an adhesive is applied to the outer circumferential surface of the damper 140 or an adhesive is applied to a portion of the socket 130 where the damper 140 is coupled do.

이렇게 소켓(130)이 완성되면, 소켓(130)을 연료 이송관(110)의 외주면에 결합하게 된다. 즉, 연료 이송관(110)의 외주면에 형성된 연결홀(112)에 각각 소켓(130)을 결합한다. 여기서, 소켓(130)과 연료 이송관(110)는 금속재질로 형성됨으로 용접 고정한다. When the socket 130 is completed, the socket 130 is coupled to the outer circumferential surface of the fuel transfer pipe 110. That is, the sockets 130 are respectively coupled to the connection holes 112 formed on the outer circumferential surface of the fuel transfer pipe 110. Here, the socket 130 and the fuel transfer pipe 110 are formed of a metal material and are welded and fixed.

상기와 같이 형성되는 본 발명의 일실시예에 따른 연료레일(100)은 연료가 흐르는 유로에서 직각 형상의 유로가 구비되는 소켓(130) 내측에 연료의 흐름에 의한 충격을 저감시키기 위한 댐퍼(140)가 구비됨으로써, 연료레일(100)에서 발생되는 진동과 소음이 발생되는 것을 방지할 수 있다.The fuel rail 100 according to an embodiment of the present invention as described above includes a damper 140 for reducing an impact due to the flow of fuel to the inside of the socket 130 having the right- The vibration and noise generated in the fuel rail 100 can be prevented from being generated.

상술한 바와 같이 본 발명은 도면에 도시된 실시 예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

100 : 연료레일
110 : 연료 이송관 111 : 유로
112 : 연결홀
130 :소켓 131 : 유로
132 : 결합홈
140 : 댐퍼 141 : 유로
150 : 보강부재
200 : 인젝터100: fuel rail
110: fuel feed pipe 111:
112: connection hole
130: socket 131:
132: coupling groove
140: damper 141:
150: reinforcing member
200: injector

Claims (4)

내측에 연료가 흐르는 유로가 형성되고, 외주면에 복수의 인젝터가 연결되는 연결홀이 형성되는 연료 이송관;
내측에 연결홀에 연결되는 유로가 구비되고, 유로에 연결되고 인젝터가 결합하기 위한 결합홈이 형성되는 소켓;
결합홈에 연결되는 유로의 일부를 형성하면서 결합홈에 끼워져 소켓의 내측에 결합되어, 연료가 유로를 흐를 때 발생되는 소음과 진동을 저감시키는 댐퍼;를 포함하되,
댐퍼는, 결합홈에 결합되는 인젝터를 향하는 면에는 인젝터에 의해 마모되는 것을 방지하기 위한 보강부재가 구비되되,
보강부재는 인젝터의 단부에 마주하는 면에 구비되되, 인젝터에 접촉되지 않도록 댐퍼의 평면부의 하부면에서 일정거리 이격되는 내측에 댐퍼와 일체로 성형되는 것을 특징으로 하는 소음 및 진동 저감 구조를 갖는 연료레일.A fuel flow path in which a fuel flow path is formed inside and a connection hole in which a plurality of injectors are connected to an outer circumferential surface;
A socket having a flow path connected to a connection hole on an inner side thereof, a socket connected to the flow path and having an engaging groove for engaging the injector;
And a damper which is inserted into the coupling groove and which is coupled to the inside of the socket to form a part of a flow path connected to the coupling groove and reduces noise and vibration generated when the fuel flows through the flow path,
The damper is provided with a reinforcing member for preventing the surface of the damper, which faces the injector coupled to the coupling groove, from being worn by the injector,
Wherein the reinforcing member is formed on the surface facing the end of the injector and integrally formed with the damper on the inner side spaced apart from the lower surface of the plane portion of the damper so as not to contact the injector. rail. 제1항에 있어서,
댐퍼는,
반구형이나 원뿔 형상으로 형성되되, 개구부가 평면부와 곡면부인 측면에 각각 형성되어 서로 연결되어 직각 형상의 유로로 형성되는 것을 특징으로 하는 소음 및 진동 저감 구조를 갖는 연료레일.

The method according to claim 1,
In the damper,
Wherein the fuel rail is formed in a hemispherical shape or a conical shape, and the openings are formed in the planar portion and the curved side surface, respectively, and are connected to each other to form a rectangular channel.

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CN110159469A (en) * 2018-02-13 2019-08-23 丰田自动车株式会社 Fuel distribution tube
GB2581359A (en) * 2019-02-13 2020-08-19 Delphi Tech Ip Ltd Common rail for gasoline engine
CN113302393A (en) * 2019-01-24 2021-08-24 卡特彼勒公司 Fuel rail

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CN110159469A (en) * 2018-02-13 2019-08-23 丰田自动车株式会社 Fuel distribution tube
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