KR100704564B1 - Dynamic damper - Google Patents

Dynamic damper Download PDF

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KR100704564B1
KR100704564B1 KR1020050088746A KR20050088746A KR100704564B1 KR 100704564 B1 KR100704564 B1 KR 100704564B1 KR 1020050088746 A KR1020050088746 A KR 1020050088746A KR 20050088746 A KR20050088746 A KR 20050088746A KR 100704564 B1 KR100704564 B1 KR 100704564B1
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South Korea
Prior art keywords
fuel
diaphragm
damper
pressure
supply line
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KR1020050088746A
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Korean (ko)
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KR20070034261A (en
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김판상
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현대자동차주식회사
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Priority to KR1020050088746A priority Critical patent/KR100704564B1/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
    • 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
    • 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
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/09—Reducing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
    • F16K7/17—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids

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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

본 발명은 LPI 시스템의 고압맥동 노이즈 제거용 댐퍼에 관한 것으로서, 특히 봄베에서 배출된 연료가 인젝터로 공급되는 연료공급라인의 도중에 높은 연료압에 의한 맥동 노이즈의 감소를 위한 댐퍼를 형성하되, 상기 댐퍼는 입력니플과 출력니플이 서로 대향되는 위치에 형성된 하우징을 구비하고, 상기 하우징의 중간부에는 단면이 웨이브타입으로 형성된 스테인레스 재질의 다이아프램을 용접 결합하며, 다이아프램의 상부에는 고압 제어용 압력제어스프링을 탄지시켜 구성하므로서, 내구성이 뛰어나고, LPI 시스템의 연료공급라인으로 공급되는 고압의 연료 맥동음을 효율적으로 감쇄시킬 수 있으며, 다이아프램을 웨이브타입으로 형성하여 넓은 표면적 확보를 통해 댐핑효율을 향상시킴은 물론 연료압이 가해지는 방향을 분산시켜 하중 집중에 의한 제품의 불량 및 고장율이 하락하도록 한 LPI 시스템의 고압맥동 노이즈 제거용 댐퍼에 관한 것이다.The present invention relates to a damper for removing high pressure pulsation noise of an LPI system, and particularly, to form a damper for reducing pulsation noise due to high fuel pressure in the middle of a fuel supply line in which fuel discharged from a bomb is supplied to an injector. Has a housing formed at a position where the input nipple and the output nipple are opposed to each other, and an intermediate portion of the housing is welded to a diaphragm made of a stainless steel having a cross section in a wave type, and a pressure control spring for high pressure control at the upper portion of the diaphragm. It is composed of carbon steel, which is durable and can effectively attenuate the high pressure fuel pulsation supplied to the fuel supply line of LPI system, and improves the damping efficiency by securing a large surface area by forming a diaphragm into a wave type. Of course, the direction in which the fuel pressure is applied is dispersed to concentrate the load. A product is defective and that the failure rate of decline relates to a high-pressure pulsation damper for noise removal of the LPI system.

LPI, 고압 맥동, 댐퍼, 다이아프램, 스레인레스, 압력제어스프링, 내구성 향상, LPI, high pressure pulsation, damper, diaphragm, strainless, pressure control spring, improved durability,

Description

엘피아이 시스템의 고압 맥동 노이즈 제거용 댐퍼{Dynamic damper}High pressure pulsation noise damper of Elpia system {Dynamic damper}

도 1 은 종래의 엘피아이 시스템을 보인 도면.1 is a view showing a conventional ELPAI system.

도 2 는 본 발명의 댐퍼가 설치된 엘피아이 시스템을 보인 도면.2 is a view showing the Elpia system installed damper of the present invention.

도 3 은 본 발명의 댐퍼를 보인 단면도.3 is a cross-sectional view showing a damper of the present invention.

도 4 는 본 발명에 적용된 다이아프램을 보인 단면도.Figure 4 is a cross-sectional view showing a diaphragm applied to the present invention.

도 5 는 본 발명에 적용된 다이아프램을 보인 사시도.5 is a perspective view showing a diaphragm applied to the present invention.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

1: 인젝터, 2: 연료공급라인,1: injector, 2: fuel supply line,

3: 연료리턴라인, 4: 댐퍼,3: fuel return line, 4: damper,

5: 봄베, 10: 하우징,5: cylinder, 10: housing,

11: 입력니플, 12: 출력니플,11: input nipple, 12: output nipple,

13: 결합부, 14: 다이아프램,13: coupling, 14: diaphragm,

15: 압력제어스프링, 16: 볼록부,15: pressure control spring, 16: convex,

17: 오목부,17: concave,

본 발명은 LPI 시스템의 고압맥동 노이즈 제거용 댐퍼에 관한 것으로서, 특히 내구성이 뛰어나고, LPI 시스템의 연료공급라인으로 공급되는 고압의 연료 맥동음을 효율적으로 감쇄시킬 수 있으며, 다이아프램을 웨이브타입으로 형성하여 넓은 표면적 확보를 통해 댐핑효율을 향상시킴은 물론 연료압이 가해지는 방향을 분산시켜 하중 집중에 의한 제품의 불량 및 고장율이 하락하도록 한 LPI 시스템의 고압맥동 노이즈 제거용 댐퍼에 관한 것이다.The present invention relates to a damper for removing high pressure pulsation noise of an LPI system. The present invention is particularly durable and can effectively attenuate high pressure fuel pulsation supplied to a fuel supply line of an LPI system, and forms a diaphragm in a wave type. The present invention relates to a high pressure pulsation noise removal damper of an LPI system that improves the damping efficiency by securing a large surface area, as well as dispersing the direction in which the fuel pressure is applied to reduce the defect and failure rate of the product due to load concentration.

도 1 은 종래의 LPI 차량의 연료시스템을 도시한 것으로서,1 shows a fuel system of a conventional LPI vehicle,

연료(LPG 가스)가 저장된 봄베(20)에서 펌핑된 연료가 연료공급라인(21)을 통해 엔진의 인젝터(23)로 공급되고, 인젝터(23)에서 분사되고 남은 잉여분의 연료는 연료리턴라인(24)을 통해 다시 봄베(20)로 리턴되도록 구성되고,Fuel pumped from the cylinder 20 in which the fuel (LPG gas) is stored is supplied to the injector 23 of the engine through the fuel supply line 21, and the surplus fuel remaining from the injector 23 is supplied to the fuel return line ( 24) is configured to return back to the cylinder 20,

상기 연료공급라인(21)의 도중에는 연료의 온도를 감지하는 온도센서(22)가 설치되며, 연료리턴라인(24)의 도중에는 연료압을 감지하는 압력센서(25)와 연료압이 일정하게 유지되도록 하면서 잉여분의 연료가 봄베(20) 측으로 리턴되도록 하는 레귤레이터(26)가 설치된 구성이다.The temperature sensor 22 for sensing the temperature of the fuel is installed in the middle of the fuel supply line 21, and the pressure sensor 25 for detecting the fuel pressure and the fuel pressure are kept constant in the middle of the fuel return line 24. While the regulator 26 is installed so that the surplus fuel is returned to the cylinder 20 side.

이와같이 구성된 종래의 LPI 시스템은 연료공급라인(21)에 장착된 온도센서(22)와 리턴라인에 장착된 압력센서(25)의 감지정보에 따라 ECU가 연료분사량 제어를 위한 인젝터 오픈 타이밍 및 점화시기를 연산하여 제어하므로서 정상적인 연료분사가 이루어져 엔진이 구동하게된다.In the conventional LPI system configured as described above, the injector opening timing and ignition timing for controlling the fuel injection amount by the ECU according to the detection information of the temperature sensor 22 mounted on the fuel supply line 21 and the pressure sensor 25 mounted on the return line. By calculating and controlling, the engine is driven by normal fuel injection.

그러나, 종래의 LPI 시스템은 기본 연료제어를 위한 연료압력을 약 9bar의 고압으로 제어하고 있기 때문에 고압에 의한 연료맥동 노이즈가 대쉬 판넬에 장착 되어 있는 레귤레이터 유닛을 통해 차내로 유입되고, 트렁크에 있는 봄베로부터 레귤레이터까지 연결되어 있는 연료공급라인의 언더바디를 통해 실내로 유입되어 고객에게 소음으로 작용하게되는 문제점이 발생하고 있었다.However, the conventional LPI system controls the fuel pressure for basic fuel control to a high pressure of about 9 bar, so that the fuel pulsation noise caused by the high pressure is introduced into the vehicle through the regulator unit mounted on the dash panel, and the bomb in the trunk From the underbody of the fuel supply line that is connected to the regulator from the room was introduced into the room to act as a noise to the customer.

이러한 고압에 의한 연료맥동 노이즈를 줄여주기 위하여 연료 리턴라인에 챔버를 추가하거나 레귤레이터 유닛의 장착부위(대쉬판넬)에 Isolator를 추가 장착하는 등의 여러가지 방법이 제공되고 있으나 큰 실효를 거두지 못하고 있는 실정이었다.In order to reduce the fuel pulsation noise caused by the high pressure, various methods such as adding a chamber to the fuel return line or adding an isolator to the mounting part (dash panel) of the regulator unit have been provided, but it has not been very effective. .

이상에서 설명한 바와같이 본 발명은 봄베에서 배출된 연료가 인젝터로 공급되는 연료공급라인의 도중에 높은 연료압에 의한 맥동 노이즈의 감소를 위한 댐퍼를 형성하되, 상기 댐퍼는 입력니플과 출력니플이 서로 대향되는 위치에 형성된 하우징을 구비하고, 상기 하우징의 중간부에는 단면이 웨이브타입으로 형성된 스테인레스 재질의 다이아프램을 용접 결합하며, 다이아프램의 상부에는 고압 제어용 압력제어스프링을 탄지시켜 구성하므로서, 내구성이 뛰어나고, LPI 시스템의 연료공급라인으로 공급되는 고압의 연료 맥동음을 효율적으로 감쇄시킬 수 있으며, 다이아프램을 웨이브타입으로 형성하여 넓은 표면적 확보를 통해 댐핑효율을 향상시킴은 물론 연료압이 가해지는 방향을 분산시켜 하중 집중에 의한 제품의 불량 및 고장율이 하락하도록 한 LPI 시스템의 고압맥동 노이즈 제거용 댐퍼를 제공함을 목적으로 한다.As described above, the present invention forms a damper for reducing pulsation noise due to high fuel pressure in the middle of a fuel supply line in which fuel discharged from a bomb is supplied to an injector, wherein the damper has an input nipple and an output nipple facing each other. It is provided with a housing formed in a position, and the middle portion of the housing is welded to the diaphragm made of stainless steel formed in the cross section of the wave type, the upper part of the diaphragm is constructed by holding a pressure control spring for high pressure control, excellent durability In addition, the high-pressure fuel pulsation supplied to the fuel supply line of the LPI system can be effectively attenuated, and the diaphragm is formed into a wave type to improve the damping efficiency through securing a large surface area and to adjust the direction in which the fuel pressure is applied. Even if product failure and failure rate by load concentration decrease It is an object of the present invention to provide a damper for removing high pressure pulsation noise of an LPI system.

상기 목적달성을 위한 본 발명은,The present invention for achieving the above object,

청구범위 제 1 항에 의하여,According to claim 1,

연료가 저장된 봄베에서 펌핑된 연료가 연료공급라인을 통해 엔진의 인젝터로 공급되고, 인젝터에서 분사되고 남은 잉여분의 연료는 연료리턴라인을 통해 다시 봄베로 리턴되도록 구성된 LPI 시스템에 있어서, In the LPI system, the fuel pumped from the cylinder in which the fuel is stored is supplied to the engine's injector through the fuel supply line, and the remaining fuel injected from the injector is returned to the cylinder through the fuel return line.

상기 연료공급라인의 도중에 높은 연료압에 의한 맥동 노이즈의 감소를 위해,In order to reduce pulsation noise caused by high fuel pressure in the middle of the fuel supply line,

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연료공급라인이 연결되는 입력니플과 출력니플이 서로 대향되는 위치에 형성된 하우징을 구비하고, 상기 하우징의 중간에 형성된 결합부에는 다이아프램을 결합하며, 다이아프램의 상부에는 고압 제어용 압력제어스프링을 탄지시키고, 상기 입력니플의 하우징 내측 위치에는 연료압이 다이아프램의 저면으로 인가되도록 안내하는 안내관을 절곡 형성한 댐퍼를 형성하되,It has a housing formed in a position where the input nipple and the output nipple connected to the fuel supply line is opposed to each other, the coupling portion formed in the middle of the housing is coupled to the diaphragm, the upper portion of the diaphragm is supported by a pressure control spring for high pressure control And a damper formed by bending a guide tube for guiding fuel pressure to be applied to the bottom surface of the diaphragm at a position inside the housing of the input nipple.

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상기 댐퍼의 다이아프램은 볼록부와 오목부를 가지도록 웨이브타입으로 형성한 것을 특징으로 한다.The diaphragm of the damper is formed in a wave type to have a convex portion and a concave portion.

이하, 첨부된 도면 도 2 내지 도 5 를 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 2 to 5.

도면부호 5 는 연료가 저장되는 봄베를 나타내고, 상기 봄베(5)에는 연료공급라인(2)과 연료리턴라인(3)이 연결되어 있으며, 상기 연료공급라인(2)으로 공급된 연료가 인젝터(1)에 의해 분사되고, 분사되지 못한 잉여분의 연료는 연료리턴라인(3)을 통해 봄베(5)로 회수되도록 LPI 연료 시스템이 구성된다.Reference numeral 5 denotes a cylinder in which fuel is stored, and the fuel supply line 2 and the fuel return line 3 are connected to the cylinder 5, and the fuel supplied to the fuel supply line 2 is injector ( The LPI fuel system is configured so that the excess fuel injected by 1) and not injected is recovered to the cylinder 5 through the fuel return line 3.

본 발명에서는 약 9bar에 이르는 연료제어압에 의한 고압 맥동 노이즈를 제거하기 위하여 상기 연료공급라인(2)의 도중에 고압의 연료압에 대해 내구성, 부피, 중량, 댐핑효율등이 최적화된 댐퍼(4)를 설치한 것이다.In the present invention, the damper (4) optimized for durability, volume, weight, damping efficiency, etc. for the high pressure fuel pressure in the middle of the fuel supply line (2) in order to remove the high pressure pulsation noise by the fuel control pressure of about 9 bar Is installed.

상기 댐퍼(4)는 도 3 및 도 4 에 도시된 바와같이,The damper 4 is shown in Figures 3 and 4,

연료공급라인(2)이 연결되는 입력니플(11)과 출력니플(12)이 서로 대향되는 위치에 형성된 하우징(10)을 구비하고, 상기 하우징(10)의 중간에 형성된 결합부(13)에는 다이아프램(14)을 결합하며, 다이아프램(14)의 상부에는 고압 제어용 압력제어스프링(15)을 탄지시키고, 상기 입력니플(11)의 출구측(하우징 내측 방향)에는 연료압이 다이아프램(14)의 저면으로 인가되도록 안내하는 안내관(18)을 절곡 형성한 것이다.The input nipple 11 and the output nipple 12 to which the fuel supply line 2 is connected are provided with a housing 10 formed at a position opposite to each other, and the coupling portion 13 formed in the middle of the housing 10 The diaphragm 14 is coupled to each other, the upper part of the diaphragm 14 holds the pressure control spring 15 for high pressure control, and the fuel pressure is supplied to the outlet side (housing inner direction) of the input nipple 11. The guide tube 18 guiding to be applied to the bottom of the 14 is bent to form.

즉, 상기 입력니플(11)과 출력니플(12)을 연료공급라인(2)의 도중에 연결하여 하우징(10) 내부로 연료압이 인가되도록 하고, 그 연료압이 다이아프램(14)의 저면으로 인가됨에 따라 연료압에 따라 다이아프램(14)이 상하로 움직이면서 연료압 고압화에 따른 맥동 노이즈가 제거되도록 한 것이다.That is, the input nipple 11 and the output nipple 12 are connected in the middle of the fuel supply line 2 so that fuel pressure is applied into the housing 10, and the fuel pressure is lowered to the bottom surface of the diaphragm 14. As it is applied, the diaphragm 14 moves up and down according to the fuel pressure, thereby pulsating noise due to the increase in the fuel pressure.

상기 다이아프램(14)은 약 9bar에 이르는 연료압에 견딜 수 있도록 하기 위해 스테인레스 재질로서 형성하여 결합부(13) 용접 결합하였고,The diaphragm 14 was welded to the coupling part 13 by forming a stainless material to withstand the fuel pressure up to about 9 bar,

다이아프램(14)을 도 5 와같이 웨이브타입으로 형성하여 다이아프램(14)의 볼록부(16)와 오목부(17)로 연료압이 분산되어 인가되므로서, 다이아프램(14)의 파손을 방지할 수 있도록 하였다.As the diaphragm 14 is formed in a wave type as shown in FIG. 5, fuel pressure is distributed and applied to the convex portion 16 and the concave portion 17 of the diaphragm 14, thereby preventing damage to the diaphragm 14. Prevented.

또한 다이아프램(14)을 웨이브타입으로 형성함에 평판형의 다이아프램에 비해 더 넓은 표면적을 확보할 수 있게되어 연료압 댐핑효율이 향상되도록 하였다.In addition, since the diaphragm 14 is formed in a wave type, it is possible to secure a larger surface area than the flat diaphragm, thereby improving fuel pressure damping efficiency.

그리고, 상기 웨이브타입으로 형성된 다이아프램(14)이 도 5 와같이 연료공급방향과 선형을 이루며 전체면적에 리니어(Linear)하게 연속적으로 연료맥동에 작동하게 되어 있어 전영역에서 선형적으로 연료 맥동을 제어하여 정밀 연료분사를 실현시키고 더욱이 고객불만족 사항인 연료맥동 노이즈를 근본적으로 개선시킬 수 있게되는 것이다.In addition, the diaphragm 14 formed in the wave type is linear to the fuel supply direction as shown in FIG. 5 and linearly acts on the fuel pulsation continuously linearly over the entire area, thereby linearly pulsating fuel in all regions. By controlling it, it is possible to realize precise fuel injection and fundamentally improve fuel pulsation noise, which is not satisfied with customers.

이상에서 설명한 바와같이 본 발명은 봄베에서 배출된 연료가 인젝터로 공급되는 연료공급라인의 도중에 높은 연료압에 의한 맥동 노이즈의 감소를 위한 댐퍼를 형성하되, 상기 댐퍼는 입력니플과 출력니플이 서로 대향되는 위치에 형성된 하우징을 구비하고, 상기 하우징의 중간부에는 단면이 웨이브타입으로 형성된 스테인레스 재질의 다이아프램을 용접 결합하며, 다이아프램의 상부에는 고압 제어용 압력제어스프링을 탄지시켜 구성하므로서, 내구성이 뛰어나고, LPI 시스템의 연료 공급라인으로 공급되는 고압의 연료 맥동음을 효율적으로 감쇄시킬 수 있으며, 다이아프램을 웨이브타입으로 형성하여 넓은 표면적 확보를 통해 댐핑효율을 향상시킴은 물론 연료압이 가해지는 방향을 분산시켜 하중 집중에 의한 제품의 불량 및 고장율이 하락하도록 한 LPI 시스템의 고압맥동 노이즈 제거용 댐퍼를 제공하는 효과를 기대할 수 있다.As described above, the present invention forms a damper for reducing pulsation noise due to high fuel pressure in the middle of a fuel supply line in which fuel discharged from a bomb is supplied to an injector, wherein the damper has an input nipple and an output nipple facing each other. It is provided with a housing formed in a position, and the middle portion of the housing is welded to the diaphragm made of stainless steel formed in the cross section of the wave type, the upper part of the diaphragm is constructed by holding a pressure control spring for high pressure control, excellent durability In addition, the high-pressure fuel pulsation supplied to the fuel supply line of the LPI system can be effectively attenuated, and the diaphragm is formed into a wave type to improve the damping efficiency through securing a large surface area and to control the direction in which the fuel pressure is applied. Product defects and failure rate by load concentration decrease It can be expected the effect of providing a high-voltage pulse noise removal of the damper lock the LPI system.

Claims (5)

연료가 저장된 봄베(5)에서 펌핑된 연료가 연료공급라인(2)을 통해 엔진의 인젝터(1)로 공급되고, 인젝터(1)에서 분사되고 남은 잉여분의 연료는 연료리턴라인(3)을 통해 다시 봄베(5)로 리턴되도록 구성된 LPI 시스템에 있어서,Fuel pumped from the cylinder 5 in which the fuel is stored is supplied to the injector 1 of the engine through the fuel supply line 2, and the surplus fuel remaining from the injector 1 is passed through the fuel return line 3. In an LPI system configured to return back to the bombe (5), 상기 연료공급라인(2)의 도중에 높은 연료압에 의한 맥동 노이즈의 감소를 위해,In order to reduce the pulsation noise due to the high fuel pressure in the middle of the fuel supply line 2, 연료공급라인(2)이 연결되는 입력니플(11)과 출력니플(12)이 서로 대향되는 위치에 형성된 하우징(10)을 구비하고, 상기 하우징(10)의 중간에 형성된 결합부(13)에는 다이아프램(14)을 결합하며, 다이아프램(14)의 상부에는 고압 제어용 압력제어스프링(15)을 탄지시키고, 상기 입력니플(11)의 하우징 내측 위치에는 연료압이 다이아프램(14)의 저면으로 인가되도록 하는 안내관(18)을 절곡 형성한 댐퍼(4)를 형성하되,The input nipple 11 and the output nipple 12 to which the fuel supply line 2 is connected are provided with a housing 10 formed at a position opposite to each other, and the coupling portion 13 formed in the middle of the housing 10 The diaphragm 14 is coupled, and the upper part of the diaphragm 14 holds the pressure control spring 15 for high pressure control, and the fuel pressure is located at the bottom of the diaphragm 14 at a position inside the housing of the input nipple 11. To form a damper (4) formed by bending the guide tube 18 to be applied to, 상기 댐퍼(4)의 다이아프램(14)은 볼록부(16)와 오목부(17)를 가지도록 웨이브타입으로 형성한 것을 특징으로 하는 LPI 시스템의 고압맥동 노이즈 제거용 댐퍼.Diaphragm 14 of the damper (4) is a high-pressure pulsation noise damper of the LPI system, characterized in that formed in a wave type to have a convex portion 16 and the concave portion (17). 삭제delete 삭제delete 삭제delete 삭제delete
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62162767A (en) 1986-01-09 1987-07-18 Nippon Denso Co Ltd Fuel pressure control valve
JPH02223664A (en) * 1989-02-23 1990-09-06 Japan Electron Control Syst Co Ltd Fuel injection device
JPH1077927A (en) 1996-09-03 1998-03-24 Zexel Corp Diaphragm damper
JP2001056064A (en) 1999-08-16 2001-02-27 Keihin Corp Fuel pressure control valve
KR20010077049A (en) * 2000-01-31 2001-08-17 김영봉 damper for fuel supply system of a car
KR20050012335A (en) * 2003-07-25 2005-02-02 현대자동차주식회사 Returnless fuel system for LPI vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62162767A (en) 1986-01-09 1987-07-18 Nippon Denso Co Ltd Fuel pressure control valve
JPH02223664A (en) * 1989-02-23 1990-09-06 Japan Electron Control Syst Co Ltd Fuel injection device
JPH1077927A (en) 1996-09-03 1998-03-24 Zexel Corp Diaphragm damper
JP2001056064A (en) 1999-08-16 2001-02-27 Keihin Corp Fuel pressure control valve
KR20010077049A (en) * 2000-01-31 2001-08-17 김영봉 damper for fuel supply system of a car
KR20050012335A (en) * 2003-07-25 2005-02-02 현대자동차주식회사 Returnless fuel system for LPI vehicle

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