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KR101033321B1 - Pump bracket - Google Patents

Pump bracket Download PDF

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Publication number
KR101033321B1
KR101033321B1 KR1020090036167A KR20090036167A KR101033321B1 KR 101033321 B1 KR101033321 B1 KR 101033321B1 KR 1020090036167 A KR1020090036167 A KR 1020090036167A KR 20090036167 A KR20090036167 A KR 20090036167A KR 101033321 B1 KR101033321 B1 KR 101033321B1
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KR
South Korea
Prior art keywords
pump
seating surface
fuel pump
bracket
pump bracket
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Expired - Fee Related
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KR1020090036167A
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Korean (ko)
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KR20100117418A (en
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박재용
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현대자동차주식회사
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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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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

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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 펌프 브래킷에 관한 것으로, 더 상세하게는 GDI엔진의 연료펌프가 장착되는 펌프 브래킷의 상부면에 부분적으로 돌출된 안착면을 대칭되도록 형성하여 연료펌프와 펌프 브래킷의 접촉면이 균일하게 유지되도록 구성된 펌프 브래킷에 관한 것이다.The present invention relates to a pump bracket, and more particularly, to form a mounting surface partially protruded from the upper surface of the pump bracket on which the fuel pump of the GDI engine is mounted so as to maintain a uniform contact surface between the fuel pump and the pump bracket. It relates to a configured pump bracket.

본 발명에 의한 펌프 브래킷을 이용하면, 연료펌프의 플랜지부가 펌프 브래킷 상부면에 국부적으로 접촉되어 접촉되는 면의 조도만 높게 가공함으로써 생산원가를 절감할 수 있다.When the pump bracket according to the present invention is used, the flange part of the fuel pump is locally contacted with the upper surface of the pump bracket, so that only the roughness of the contacted surface can be reduced to reduce the production cost.

또한, 연료펌프의 플랜지부가 접촉되는 안착면을 펌프 브래킷의 상부면에 부분적으로 대칭되도록 형성하고, 삽입부의 안착면을 결합부의 안착면보다 높게 형성하여 진동을 균일하게 분산시켜 진동에 의한 파손 및 누유를 방지할 수 있다. In addition, the seating surface in contact with the flange portion of the fuel pump is formed to be partially symmetrical to the upper surface of the pump bracket, and the seating surface of the insertion portion is formed higher than the seating surface of the coupling portion to evenly distribute the vibration to prevent breakage and leakage caused by vibration It can prevent.

연료펌프, 브래킷, 안착면, 단차 Fuel pump, bracket, seating surface, step

Description

펌프 브래킷{Pump bracket}Pump bracket

본 발명은 펌프 브래킷에 관한 것으로, 더 상세하게는 GDI엔진의 연료펌프가 장착되는 펌프 브래킷의 상부면에 부분적으로 돌출된 안착면을 대칭되도록 형성하여 연료펌프와 펌프 브래킷의 접촉면이 균일하게 유지되도록 구성된 펌프 브래킷에 관한 것이다.The present invention relates to a pump bracket, and more particularly, to form a mounting surface partially protruded from the upper surface of the pump bracket on which the fuel pump of the GDI engine is mounted so as to maintain a uniform contact surface between the fuel pump and the pump bracket. It relates to a configured pump bracket.

일반적으로 GDI엔진이라고 불리는 직접 분사식 가솔린엔진은 연소실에 연료를 직접 분사하여 실린더 내에 강한 소용돌이를 발생시켜 연료의 양과 분사시기를 정밀하게 조절할 수 있어 연비와 출력이 높은 엔진이다. 이러한 GDI엔진에서는 연료를 연소실 내에 직접 분사하기 위해 고압의 연료압력을 필요로 하며, 고압을 발생시키기 위한 고압연료펌프가 구비된다. In general, the direct injection gasoline engine, called GDI engine, is a high fuel economy and high power engine because it can inject the fuel directly into the combustion chamber to generate strong vortex in the cylinder to precisely control the amount of fuel and the injection timing. In such a GDI engine, a high pressure fuel pressure is required to directly inject fuel into a combustion chamber, and a high pressure fuel pump for generating a high pressure is provided.

고압연료펌프는 펌프 브래킷에 장착되며, 캠축에 장착된 캠의 회전운동에 의해 펌프의 피스톤이 상하이동하여 압력을 발생시킨다. 그러나, 피스톤의 상하이동에 의해 펌프의 플랜지부에 지속적인 진동이 발생하며, 진동으로 인한 플랜지부 및 펌프 브래킷의 균열을 방지하기 위해 종래에는 플랜지부와 펌프 브래킷의 접촉면의 조도를 높게 가공하거나 두께를 두껍게 형성하였다.The high pressure fuel pump is mounted on the pump bracket, and the piston of the pump is moved by the rotational movement of the cam mounted on the cam shaft to generate pressure. However, the vibration of the piston causes continuous vibration to occur in the flange portion of the pump, and in order to prevent cracking of the flange portion and the pump bracket due to vibration, conventionally, the roughness of the contact surface between the flange portion and the pump bracket is increased or the thickness is increased. It formed thick.

이하 첨부된 도면을 참조하여 종래기술에 의한 연료펌프의 장착구조를 설명한다.Hereinafter, the mounting structure of the fuel pump according to the prior art will be described with reference to the accompanying drawings.

도 1은 종래기술에 의한 펌프 브래킷에 연료펌프가 장착된 구조를 나타낸 단면도이다.1 is a cross-sectional view showing a structure in which a fuel pump is mounted on a pump bracket according to the prior art.

펌프 브래킷은 캠캐리어(미도시)에 장착되며, 펌프 브래킷(10)에 연료펌프(200)가 장착된다. 펌프 브래킷(10)은 연료펌프(200)의 피스톤(220)이 삽입되는 삽입구(11), 연료펌프(200)와의 결합을 위한 나사가 삽입되는 결합구(12)가 형성되어 있다. 연료펌프의 피스톤(220)은 캠(30)의 회전에 의해 상하이동되며, 피스톤(220)의 상하이동으로 진동이 발생한다. The pump bracket is mounted on a cam carrier (not shown), and the fuel pump 200 is mounted on the pump bracket 10. The pump bracket 10 has an insertion hole 11 into which the piston 220 of the fuel pump 200 is inserted, and a coupling hole 12 into which a screw for coupling with the fuel pump 200 is inserted. The piston 220 of the fuel pump is moved up and down by the rotation of the cam 30, the vibration occurs in the up and down movement of the piston 220.

이에 따라 연료펌프 플랜지부(210)의 하단면과 펌프 브래킷(10)의 상단면이 우수한 표면조도를 갖도록 형성하거나, 플랜지부(210)의 두께를 두껍게 형성하여, 기밀하게 밀착되고 진동이 균일하게 분배될 수 있도록 구성된다. Accordingly, the bottom surface of the fuel pump flange portion 210 and the top surface of the pump bracket 10 are formed to have excellent surface roughness, or the thickness of the flange portion 210 is formed thick, so that the airtightness and vibration are uniform. It is configured to be distributed.

그러나, 플랜지부(210)의 하부면과 펌프 브래킷(10)의 상부면 전체의 표면조도를 높게 가공하거나 플랜지부(210)의 두께를 두껍게 형성하는 것은 생산원가를 높이게 되는 문제점이 있다. 또한, 가공이 제대로 되지 않아 플랜지부(210)와 펌프 브래킷(10)의 접촉이 불균일할 경우에는 접촉되는 면에 진동이 균일하게 전달되지 않아 엔진의 효율을 떨어뜨리고 균열이 발생하는 문제점이 발생한다. However, processing the surface roughness of the lower surface of the flange portion 210 and the entire upper surface of the pump bracket 10 or forming the thickness of the flange portion 210 thickly has a problem of increasing the production cost. In addition, when the flange portion 210 and the pump bracket 10 are unevenly contacted due to poor machining, vibrations are not uniformly transmitted to the contacting surface, thereby reducing the efficiency of the engine and causing cracks. .

본 발명은 상기와 같은 문제점을 해결하기 위하여 제안된 것으로, 연료펌프의 플랜지부와 접촉되는 펌프 브래킷 상부면에 돌출된 안착면이 부분적으로 형성된 펌프 브래킷을 제공하는데 목적이 있다.The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a pump bracket in which a seating surface protruding from a pump bracket upper surface in contact with a flange portion of a fuel pump is partially formed.

GDI엔진의 연료펌프가 장착되는 펌프 브래킷에 있어서,In the pump bracket to which the fuel pump of the GDI engine is mounted,

중앙에 상기 연료펌프의 피스톤이 삽입되는 삽입구가 형성된 삽입부;An insertion part having an insertion hole in which a piston of the fuel pump is inserted in the center;

상기 삽입구의 중심축을 중심으로 대칭되도록 상기 삽입부의 둘레면에 마련되며, 나사홀이 형성된 복수개의 결합부;A plurality of coupling parts provided on a circumferential surface of the insertion part so as to be symmetric about a central axis of the insertion hole, and having a screw hole;

를 포함하며, 상기 삽입부 및 상기 결합부의 상부면 가장자리 일부에는 상향으로 돌출된 안착면이 형성된 것을 특징으로 한다.It includes, characterized in that the seating surface protruding upward from a portion of the upper surface edge of the insertion portion and the coupling portion.

상기 안착면은,The seating surface,

상기 삽입부의 상부면 가장자리에 형성된 제1 안착면과, 상기 결합부의 상부면 가장자리에 형성된 제2 안착면을 포함하되, 상기 제1 안착면이 상기 제2 안착면보다 높게 형성된다.It includes a first seating surface formed on the upper surface edge of the insertion portion, and a second seating surface formed on the upper surface edge of the coupling portion, wherein the first seating surface is formed higher than the second seating surface.

상기 제1 안착면은 상기 삽입구의 중심축을 중심으로 대칭되도록 형성되며, 상기 결합부가 형성된 방향과 직각을 이루는 방향에 형성된다.The first seating surface is formed to be symmetric about a central axis of the insertion hole, and is formed in a direction perpendicular to the direction in which the coupling portion is formed.

상기 제2 안착면은 상기 삽입부에서 가장 멀리 떨어진 상기 결합부의 상부면 가장자리에 형성된다.The second seating surface is formed at an edge of the upper surface of the coupling portion furthest from the insertion portion.

본 발명에 의한 펌프 브래킷을 이용하면, 연료펌프의 플랜지부가 펌프 브래킷 상부면에 국부적으로 접촉되어 접촉되는 면의 표면조도만 높게 가공함으로써 생산원가를 절감할 수 있다.By using the pump bracket according to the present invention, the flange portion of the fuel pump is locally contacted with the upper surface of the pump bracket, so that only the surface roughness of the contacted surface can be reduced to reduce the production cost.

또한, 연료펌프의 플랜지부가 접촉되는 안착면을 펌프 브래킷의 상부면에 대칭되도록 형성하고, 제1 안착면을 제2 안착면보다 높게 형성하여 진동을 균일하게 분산시켜 진동에 의한 파손 및 누유를 방지할 수 있다. In addition, the seating surface in contact with the flange portion of the fuel pump is formed to be symmetrical to the upper surface of the pump bracket, and the first seating surface is formed higher than the second seating surface to evenly distribute the vibration to prevent breakage and leakage due to vibration Can be.

이하 첨부된 도면을 참조하여 본 발명에 의한 펌프 브래킷의 실시예를 상세히 설명한다.Hereinafter, embodiments of the pump bracket according to the present invention will be described in detail with reference to the accompanying drawings.

도 2는 GDI엔진의 일부 구성을 나타낸 분해사시도이고, 도 3은 GDI엔진의 연료펌프 작동을 설명하기 위한 단면사시도이며, 도 4는 본 발명에 의한 펌프 브래킷의 사시도이다. Figure 2 is an exploded perspective view showing a part of the configuration of the GDI engine, Figure 3 is a cross-sectional perspective view for explaining the operation of the fuel pump of the GDI engine, Figure 4 is a perspective view of a pump bracket according to the present invention.

GDI엔진은 연료를 연소실에 직접 공급하기 위한 고압연료펌프(이하 연료펌 프)가 구비된다. 연료펌프(200)는 내측에 실린더 및 피스톤(220)이 구비되며, 연료펌프(200) 중단부에 외측으로 돌출된 플랜지부(210)가 형성되어 있다. 플랜지부(210)에는 볼트가 삽입되는 홀(211)이 형성되어 있다. 연료펌프(200)는 캠(30)의 회전에 의해 피스톤(210)이 상하이동 할 수 있도록 피스톤(210)의 단부가 캠(30)의 회전운동을 전달받을 수 있도록 캠캐리어(400) 상측에 위치된다. The GDI engine is equipped with a high pressure fuel pump (hereinafter referred to as a fuel pump) for supplying fuel directly to the combustion chamber. The fuel pump 200 is provided with a cylinder and a piston 220 therein, and a flange portion 210 protruding outward is formed at a stop portion of the fuel pump 200. The flange portion 210 is formed with a hole 211 into which the bolt is inserted. The fuel pump 200 is positioned above the cam carrier 400 so that the end of the piston 210 can receive the rotational movement of the cam 30 so that the piston 210 can be moved by the rotation of the cam 30. Is located.

본 실시예에 의하면 연료펌프(200)의 플랜지부(210)는 캠캐리어(400)에 장착된 펌프 브래킷(100)에 고정되되, 캠캐리어(400) 상부에 엔진의 소음저감 및 누유방지를 위해 장착되는 실린더헤드커버(300)의 상부에 시일접촉되도록 위치한다. According to the present embodiment, the flange portion 210 of the fuel pump 200 is fixed to the pump bracket 100 mounted on the cam carrier 400, so as to reduce noise and leakage of the engine on the cam carrier 400. The cylinder head cover 300 is mounted so as to be in contact with the seal.

실린더헤드커버(300)에는 펌프 브래킷(100)의 상부면이 외부로 노출되도록 브래킷 가이드(310)가 형성되며, 연료펌프(200)는 펌프 브래킷(100)에 장착되어 펌프 브래킷(100) 상부면 및 브래킷 가이드(310) 상부면에 밀착된다. 브래킷 가이드(310) 상부면에는 누유 방지 및 확실한 밀폐를 위해 시일(320)이 더 구비된다. The cylinder head cover 300 has a bracket guide 310 formed to expose the upper surface of the pump bracket 100 to the outside, the fuel pump 200 is mounted to the pump bracket 100 to the upper surface of the pump bracket 100 And it is in close contact with the upper surface of the bracket guide 310. The upper surface of the bracket guide 310 is further provided with a seal 320 to prevent leakage and secure sealing.

캠캐리어(400)에 장착된 펌프 브래킷(100)에 연료펌프(200)가 장착되면, 캠축(20)에 구비된 연료펌프용 캠(30)의 회전에 의해 캠(30) 외주면에 접촉된 롤러태핏(40)이 캠(30)의 회전운동을 직선운동으로 전환하여 연료펌프의 피스톤(220)으로 전달한다. 피스톤(220)의 상하운동에 의해 고압이 발생되어 연소실 내로 연료를 고압분사 시킬 수 있다.When the fuel pump 200 is mounted on the pump bracket 100 mounted on the cam carrier 400, the roller contacts the outer circumferential surface of the cam 30 by the rotation of the fuel pump cam 30 provided on the camshaft 20. The tappet 40 converts the rotational movement of the cam 30 into a linear movement and transmits it to the piston 220 of the fuel pump. The high pressure is generated by the vertical movement of the piston 220 to high-pressure injection of fuel into the combustion chamber.

펌프 브래킷(100)은 중앙에 연료펌프의 피스톤(220) 및 롤러태핏(40)이 삽입 위치되는 삽입구(111)가 형성된 삽입부(110)와, 삽입부(110)의 둘레면에 형성되고, 길이방향으로 삽입구(111)의 중심축과 나란한 중심축을 갖는 나사홀(121)이 형성된 한쌍의 결합부(120)가 형성되어 있다. The pump bracket 100 is formed in the insertion part 110 and the insertion part 110 formed with an insertion hole 111 into which the piston 220 and the roller tappet 40 of the fuel pump are inserted, and are formed on the circumferential surface of the insertion part 110. A pair of coupling parts 120 having a screw hole 121 having a central axis parallel to the central axis of the insertion hole 111 is formed in the longitudinal direction.

결합부(120)는 삽입구(111)의 중심축에 대칭되도록 형성되며, 대칭되는 나사홀(121)과 연료펌프 플랜지부의 홀(211)에 나사가 삽입되어 연료펌프(200)를 펌프 브래킷(100)에 장착시킬 수 있다. 삽입부(110)와 결합부(120) 하단에는 캠 캐리어(400)에 장착되도록 하나 이상의 장착홀(131)이 마련된 장착부(130)가 형성되어 있다.Coupling portion 120 is formed to be symmetrical to the central axis of the insertion hole 111, the screw is inserted into the symmetrical screw hole 121 and the hole of the fuel pump flange portion 211 to the fuel pump 200 pump bracket ( 100) can be mounted. At the bottom of the insertion part 110 and the coupling part 120, a mounting part 130 having one or more mounting holes 131 is formed to be mounted on the cam carrier 400.

펌프 브래킷(100)의 상부면에는 연료펌프의 플랜지부(210) 하부면과 부분적으로 밀착되도록 상향돌출된 안착면(112, 122)이 형성되며, 안착면(112, 122)은 삽입부(110)와 결합부(120)의 상부면 가장자리에 부분적으로 형성된다. The upper surface of the pump bracket 100 is formed with mounting surfaces 112 and 122 protruded upward to partially contact the lower surface of the flange 210 of the fuel pump, and the mounting surfaces 112 and 122 are inserted into the insert 110. ) And the edge of the upper surface of the coupling portion 120 is partially formed.

안착면은 삽입부(110)에 형성된 제1 안착면(112)과 결합부(120)에 형성된 제2 안착면(122)을 포함하며, 연료펌프 피스톤(220)의 왕복이동에 의한 진동이 안착면(112, 122) 및 연료펌프 플랜지부(210)에 균일하게 전달되도록 안착면(112, 122)과 연료펌프 플랜지부(210)의 하부면은 높은 표면조도를 갖도록 형성된다. 제1 안착면(112)과 제2 안착면(122)을 부분적으로 형성함으로써, 높은 표면조도를 필요로 하는 안착면(112, 122)의 가공면적이 줄어들어 원가가 절감되는 효과가 있다.The seating surface includes a first seating surface 112 formed in the insertion unit 110 and a second seating surface 122 formed in the coupling unit 120, and vibrations due to reciprocating movement of the fuel pump piston 220 are seated. The mounting surfaces 112 and 122 and the lower surfaces of the fuel pump flange 210 are formed to have high surface roughness so as to be uniformly transmitted to the surfaces 112 and 122 and the fuel pump flange 210. By partially forming the first seating surface 112 and the second seating surface 122, the processing area of the seating surfaces 112 and 122 requiring high surface roughness is reduced, thereby reducing the cost.

도 5는 본 발명에 의한 펌프 브래킷의 평면도이고, 도 6은 A-A 단면도이다.5 is a plan view of the pump bracket according to the present invention, Figure 6 is a cross-sectional view A-A.

제1 안착면(112)은 삽입부(110)의 상부면 가장자리에 삽입구(111)의 중심축을 중심으로 대칭되도록 쌍으로 형성되되, 결합부(120)의 배열방향과 직각을 이루는 방향에 형성된다. 제2 안착면(122)은 삽입부(110)와 가장 멀리 떨어진 결합부(120)의 상부면 가장자리를 따라 c자 형태로 형성된다. 이와 같이 제1 안착 면(112)과 제2 안착면(122)이 삽입구(111)의 중심축을 중심으로 좌우가 대칭되도록 형성되며, 연료펌프 플랜지부(210)와 안착면(112, 122)의 접촉부분을 연결하였을 때, 서로 대칭되는 삼각형을 이루도록 구성됨으로써 안정적으로 결합되어, 안착면(112, 122)과 플랜지부(210)에 진동을 균일하게 분산시킬 수 있다.The first seating surface 112 is formed in a pair to be symmetrical about the central axis of the insertion hole 111 at the edge of the upper surface of the insertion portion 110, is formed in a direction perpendicular to the arrangement direction of the coupling portion 120. . The second seating surface 122 is formed in a c-shape along the edge of the upper surface of the coupling part 120 farthest from the insertion part 110. As such, the first seating surface 112 and the second seating surface 122 are formed to be symmetrical with respect to the central axis of the insertion hole 111, and the fuel pump flange portion 210 and the seating surfaces 112 and 122 are formed. When the contact portion is connected, it is configured to form a triangle that is symmetrical to each other is coupled stably, it is possible to uniformly distribute the vibration on the seating surface (112, 122) and the flange portion (210).

본 실시예에서는 삽입부(110)의 지름(R)을 제1 안착면(112)의 바깥지름(r)보다 작게 형성하여 중량 및 원가를 감소시킬 수 있도록 구성하였으나, 삽입부(110)의 지름(R)과 제1 안착면(112)의 바깥지름(r)을 동일하게 형성하도록 구성될 수도 있다.In this embodiment, the diameter (R) of the insertion portion 110 is formed to be smaller than the outer diameter (r) of the first seating surface 112, but configured to reduce the weight and cost, the diameter of the insertion portion 110 (R) and the outer diameter r of the 1st mounting surface 112 may be comprised so that it may be formed the same.

한편, 제1 안착면(112)과 제2 안착면(122)의 높이를 삽입부(110) 및 결합부(120)의 상부면을 기준으로 서로 다르게 형성하되, 제1 안착면(112)의 돌출높이(T)가 제2 안착면(122)의 돌출높이(t)보다 높게 형성됨이 바람직하다. 이는 피스톤(220)의 상하운동에 의해 피스톤(220)의 축 방향의 진동뿐 아니라 축 방향과 수직, 즉, 플랜지부(210)와 안착면(112, 122)의 접촉면과 수평방향으로의 진동이 발생되는데, 제2 안착면(122)과 제1 안착면(112)을 단차지게 형성함으로써 수평방향의 진동 발생을 감소시킬 수 있다.On the other hand, the height of the first seating surface 112 and the second seating surface 122 is formed differently based on the upper surface of the inserting portion 110 and the coupling portion 120, the first seating surface 112 It is preferable that the protrusion height T is formed higher than the protrusion height t of the second seating surface 122. This is due to the vertical movement of the piston 220 as well as the vibration in the axial direction of the piston 220 as well as perpendicular to the axial direction, that is, the contact surface of the flange portion 210 and the seating surfaces 112 and 122 in the horizontal direction. In this case, the second seating surface 122 and the first seating surface 112 may be stepped to reduce the occurrence of vibration in the horizontal direction.

도 7은 본 발명에 의한 펌프 브래킷에 연료펌프 장착시의 개략적인 단면도이다.7 is a schematic cross-sectional view of the fuel pump mounted on the pump bracket according to the present invention.

연료펌프의 피스톤(미도시)을 삽입구(121)에 삽입시켜 플랜지부(210)의 하부면이 제1 안착면(112)에 접촉되도록 위치시킨다. 피스톤을 삽입시킨 상태에서는 삽입구(111)의 내주면과 연료펌프의 외주면 사이에 오링이 위치하여 연료펌프와 펌프 브래킷(100) 사이에 밀폐가 유지된다(a). 이 상태에서 플랜지부의 홀(211)과 펌프 브래킷의 나사홀(121)에 나사(50)를 삽입시켜 조이면 제2 안착면(122)에 플랜지부(210)의 하부면이 밀착되면서 연료펌프(200)가 펌프 브래킷(100)에 고정된다(b). A piston (not shown) of the fuel pump is inserted into the insertion hole 121 to position the lower surface of the flange portion 210 in contact with the first seating surface 112. In the state in which the piston is inserted, the O-ring is positioned between the inner circumferential surface of the insertion port 111 and the outer circumferential surface of the fuel pump to maintain a seal between the fuel pump and the pump bracket 100 (a). In this state, when the screw 50 is inserted into the hole 211 of the flange portion and the screw hole 121 of the pump bracket and tightened, the lower surface of the flange portion 210 comes into close contact with the second seating surface 122 and the fuel pump ( 200 is fixed to the pump bracket 100 (b).

여기서 플랜지부(210)는 제1 안착면(112)과 제2 안착면(122)의 단차에 의해 제2 안착면(122) 쪽으로 휘어지면서 밀착되어 고정되며, 플랜지부(210) 하부면의 가장자리는 브래킷 가이드(미도시)의 상부면에 밀착된다. 브래킷 가이드(미도시) 상부면은 제2 안착면(122)보다 낮은 곳에 위치하되, 시일에 의해 플랜지부(210) 하부면과 밀착되어 밀폐되도록 구성된다.  Here, the flange portion 210 is bent toward the second seating surface 122 by a step between the first seating surface 112 and the second seating surface 122, and is fixed in close contact with the edge of the flange 210 bottom surface. Is in close contact with the upper surface of the bracket guide (not shown). The upper surface of the bracket guide (not shown) is positioned at a lower position than the second seating surface 122, and is configured to be in close contact with the lower surface of the flange portion 210 by a seal.

이상, 본 발명을 바람직한 실시 예를 사용하여 상세히 설명하였으나, 본 발명의 범위는 특정 실시 예에 한정되는 것은 아니며, 첨부된 특허청구범위에 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, Comprising: It 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.

도 1은 종래기술에 의한 펌프 브래킷에 연료펌프가 장착된 구조를 나타낸 단면도이다.1 is a cross-sectional view showing a structure in which a fuel pump is mounted on a pump bracket according to the prior art.

도 2는 GDI엔진의 일부 구성을 나타낸 분해사시도이다.2 is an exploded perspective view showing a part of the configuration of the GDI engine.

도 3은 GDI엔진의 연료펌프 작동을 설명하기 위한 단면사시도이다.3 is a cross-sectional perspective view for explaining the operation of the fuel pump of the GDI engine.

도 4는 본 발명에 의한 펌프 브래킷의 사시도이다.4 is a perspective view of a pump bracket according to the present invention.

도 5는 본 발명에 의한 펌프 브래킷의 평면도이다.5 is a plan view of the pump bracket according to the present invention.

도 6는 A-A 단면도이다.6 is a cross-sectional view taken along the line A-A.

도 7은 본 발명에 의한 펌프 브래킷과 연료펌프의 장착시의 개략적인 단면도이다.7 is a schematic cross-sectional view at the time of mounting the pump bracket and the fuel pump according to the present invention.

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

100: 펌프 브래킷 110: 삽입부100: pump bracket 110: insertion portion

111: 삽입구 112: 제1 안착면111: insertion hole 112: the first seating surface

120: 결합부 121: 나사홀120: coupling portion 121: screw hole

122: 제2 안착면 130: 장착부122: second seating surface 130: mounting portion

Claims (4)

GDI엔진의 연료펌프가 장착되는 펌프 브래킷에 있어서,In the pump bracket to which the fuel pump of the GDI engine is mounted, 중앙에 상기 연료펌프의 피스톤이 삽입되는 삽입구가 형성된 삽입부;An insertion part having an insertion hole in which a piston of the fuel pump is inserted in the center; 상기 삽입구의 중심축을 중심으로 대칭되도록 상기 삽입부의 둘레면에 마련되며, 나사홀이 형성된 복수개의 결합부;A plurality of coupling parts provided on a circumferential surface of the insertion part so as to be symmetric about a central axis of the insertion hole, and having a screw hole; 를 포함하며, 상기 삽입부 및 상기 결합부의 상부면 가장자리 일부에는 상향으로 돌출된 안착면이 형성된 것을 특징으로 하는 펌프 브래킷.It includes, the pump bracket, characterized in that the seating surface protruding upwardly formed in a portion of the upper surface edge of the insertion portion and the coupling portion. 제 1 항에 있어서, 상기 안착면은,The method of claim 1, wherein the seating surface, 상기 삽입부의 상부면 가장자리에 형성된 제1 안착면과, 상기 결합부의 상부면 가장자리에 형성된 제2 안착면을 포함하되, 상기 제1 안착면이 상기 제2 안착면보다 높게 형성되는 펌프 브래킷.A pump bracket including a first seating surface formed on the upper surface edge of the insertion portion, and a second seating surface formed on the upper surface edge of the coupling portion, wherein the first seating surface is formed higher than the second seating surface. 제 2 항에 있어서,The method of claim 2, 상기 제1 안착면은 상기 삽입구의 중심축을 중심으로 대칭되도록 형성되며, 상기 결합부가 형성된 방향과 직각을 이루는 방향에 형성된 펌프 브래킷.The first seating surface is formed to be symmetrical about the central axis of the insertion hole, the pump bracket formed in a direction perpendicular to the direction in which the coupling portion is formed. 제 2 항에 있어서,The method of claim 2, 상기 제2 안착면은 상기 삽입부에서 가장 멀리 떨어진 상기 결합부의 상부면 가장자리에 형성된 펌프 브래킷.The second seating surface is a pump bracket formed on the upper edge of the coupling portion furthest from the insertion portion.
KR1020090036167A 2009-04-24 2009-04-24 Pump bracket Expired - Fee Related KR101033321B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000291503A (en) 1999-04-08 2000-10-17 Toyota Motor Corp Mounting structure of high-pressure fuel pump
JP2001271703A (en) 2000-03-28 2001-10-05 Aisin Seiki Co Ltd Engine high-pressure fuel pump mounting structure
JP2004028079A (en) * 2002-05-10 2004-01-29 Yamaha Motor Co Ltd Fuel pump fitting structure of fuel injection type engine
JP2008019842A (en) * 2006-07-14 2008-01-31 Toyota Motor Corp Fuel pump support structure for internal combustion engine and pump support bracket used for the support structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000291503A (en) 1999-04-08 2000-10-17 Toyota Motor Corp Mounting structure of high-pressure fuel pump
JP2001271703A (en) 2000-03-28 2001-10-05 Aisin Seiki Co Ltd Engine high-pressure fuel pump mounting structure
JP2004028079A (en) * 2002-05-10 2004-01-29 Yamaha Motor Co Ltd Fuel pump fitting structure of fuel injection type engine
JP2008019842A (en) * 2006-07-14 2008-01-31 Toyota Motor Corp Fuel pump support structure for internal combustion engine and pump support bracket used for the support structure

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