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KR100569012B1 - High Pressure Fuel Pumps for Common Rail Systems - Google Patents

High Pressure Fuel Pumps for Common Rail Systems Download PDF

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Publication number
KR100569012B1
KR100569012B1 KR1020030085144A KR20030085144A KR100569012B1 KR 100569012 B1 KR100569012 B1 KR 100569012B1 KR 1020030085144 A KR1020030085144 A KR 1020030085144A KR 20030085144 A KR20030085144 A KR 20030085144A KR 100569012 B1 KR100569012 B1 KR 100569012B1
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South Korea
Prior art keywords
plunger
roll
shoe
pressure fuel
high pressure
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Expired - Fee Related
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KR1020030085144A
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KR20050051372A (en
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권선동
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현대자동차주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85Mounting of fuel injection apparatus
    • F02M2200/856Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa

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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)
  • Reciprocating Pumps (AREA)

Abstract

본 발명의 커먼 레일 시스템용 고압연료펌프는, 롤 및 슈의 마모를 방지하여 내구 신뢰성 향상 및 주행 중 출력 저하 문제를 해결하기 위한 것으로서, 캠프로 파일에 연결 작동되는 롤, 이 롤을 감싸고 있는 슈, 및 이 롤과 슈를 통하여 전달되는 캠의 작동력에 의하여 왕복 운동하면서 고압을 발생시키며, 롤의 하중 방향(b)과 플런저의 지지 방향(c)을 일치시키는 2개의 제1, 2 플런저(17a, 17b)로 구성되어 있다.The high-pressure fuel pump for the common rail system of the present invention is to prevent wear of the roll and the shoe, to improve durability reliability and to reduce the power output problem while driving. And two first and second plungers 17a which generate high pressure while reciprocating by the operating force of the cam transmitted through the roll and the shoe, and matching the load direction b of the roll with the support direction c of the plunger. , 17b).

캠, 롤, 슈, 편심, 플런저Cam, Roll, Shoe, Eccentric, Plunger

Description

커먼 레일 시스템용 고압연료펌프 {HIGH PRESSURE FUEL PUMP FOR COMMON RAIL SYSTEM}High Pressure Fuel Pump for Common Rail System {HIGH PRESSURE FUEL PUMP FOR COMMON RAIL SYSTEM}

도 1은 종래기술에 따른 커먼 레일 시스템용 고압연료펌프의 플런저부 단면도.1 is a cross-sectional view of a plunger portion of a high-pressure fuel pump for a common rail system according to the prior art.

도 2는 본 발명에 따른 커먼 레일 시스템용 고압연료펌프의 플런저부 단면도.Figure 2 is a cross-sectional view of the plunger portion of the high-pressure fuel pump for a common rail system according to the present invention.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

11 : 롤 13 : 슈11: roll 13: shoe

15 : 캠프로 파일 17 : 플런저15: File to Camp 17: Plunger

17a, 17b : 제1, 2 플런저 a : 롤 진행 방향17a, 17b: 1st, 2nd plunger a: roll advancing direction

b : 롤 하중 방향 c : 플런저 지지 방향b: Roll load direction c: Plunger support direction

본 발명은 커먼 레일 시스템용 고압연료펌프에 관한 것으로서, 보다 상세하게는 롤의 하중 방향과 플런저 지지 방향을 일치시키는 커먼 레일 시스템용 고압연료펌프에 관한 것이다.The present invention relates to a high pressure fuel pump for a common rail system, and more particularly to a high pressure fuel pump for a common rail system to match the load direction of the roll and the plunger support direction.

일반적으로, 커먼 레일 시스템용 고압연료펌프는 연료 압축용 플런저를 구비하고 있으며, 이 플런저의 왕복 운동으로 고압을 발생시키게 된다.In general, the high-pressure fuel pump for the common rail system is provided with a fuel compression plunger, which generates high pressure by reciprocating movement of the plunger.

이 고압연료펌프의 플러저부에는 도 1에 도시된 바와 같이, 플런저(1)가 캠프로 파일(3)로부터 롤(5) 및 슈(7)를 개재하여 연결되는 구조를 이루고 있다.As shown in FIG. 1, the plunger 1 of the high pressure fuel pump has a structure in which a plunger 1 is connected from a campfire pile 3 via a roll 5 and a shoe 7.

이 고압연료펌프는 캠(미도시)의 회전 방향과 슈(7)의 상하 운동 관계에 있어서, 슈(7)가 기울어진 상태로 플런저(1)와 편접촉 되기 때문에 롤(5)의 진행 방향(a)에 대한 롤(5)의 하중 방향(b)과 슈(7)에 가해지는 플런저(1)의 지지 방향(c)을 서로 어긋나게 한다.This high-pressure fuel pump is in the direction of rotation of the cam (not shown), and in the vertical motion relationship of the shoe 7, in which the shoe 7 is in one-sided contact with the plunger 1 in an inclined state, so that the direction of the roll 5 travels. The load direction b of the roll 5 with respect to (a) and the support direction c of the plunger 1 applied to the shoe 7 are shift | deviated from each other.

즉, 슈(7)가 롤(5)로부터 하중을 받아 하강 운동할 때, 슈(7)가 편심 됨으로서 슈(7)의 일측면에 편심 마모 흔적이 남게 되고, 이로 인하여 슈(7)가 편마모 되고, 롤(5) 페일이 발생된다.That is, when the shoe 7 moves downward under the load of the roll 5, the shoe 7 is eccentric to leave an eccentric wear mark on one side of the shoe 7, which causes the shoe 7 to wear unevenly. The roll 5 fail is generated.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 롤 및 슈의 마모를 방지하여 내구 신뢰성 향상 및 주행 중 출력 저하 문제를 해결하는 커먼 레일 시스템용 고압연료펌프를 제공하는 데 있다.The present invention is to solve the above problems, an object of the present invention is to provide a high-pressure fuel pump for a common rail system for preventing the wear of the rolls and shoes to improve the durability reliability and solve the problem of output degradation during driving. .

본 발명의 커먼 레일 시스템용 고압연료펌프는, 캠프로 파일에 연결 작동되는 롤,The high-pressure fuel pump for a common rail system of the present invention, the roll is connected to the operation of the camp to the pile,

상기 롤을 감싸고 있는 슈, 및A shoe surrounding the roll, and

상기 롤 및 슈를 통하여 전달되는 캠의 작동력에 의하여 상하 운동하면서 고 압을 발생시키며, 롤의 하중 방향과 플런저의 지지 방향을 일치시키는 플런저를 포함하고 있다.It generates a high pressure while moving up and down by the operating force of the cam transmitted through the roll and the shoe, and includes a plunger to match the load direction of the roll and the support direction of the plunger.

상기 플런저는 롤의 하중이 슈에 편심되게 작용하는 위치에 설치되는 제1 플런저, 및The plunger may include a first plunger installed at a position where the load of the roll acts eccentrically on the shoe, and

상기 제1 플런저의 일측에 구비되어 편심되는 슈의 반대측 위치에 설치되는 제2 플런저를 포함한다.And a second plunger provided at one side of the first plunger and installed at a position opposite to the eccentric shoe.

상기 제1 플런저가 설치되는 위치는 롤의 중심 위치로부터 롤의 진행 방향 반대측에 형성되는 것이 바람직하다.It is preferable that the position where the said 1st plunger is installed is formed on the opposite side to the advancing direction of a roll from the center position of a roll.

상기 제1, 2 플런저는 동일하게 형성되는 것이 바람직하다.The first and second plungers are preferably formed in the same manner.

본 발명의 이점과 장점은 이하의 바람직한 실시 예를 첨부한 도면에 의거하여 상세히 설명함으로서 보다 명확하게 될 것이다.Advantages and advantages of the present invention will be more apparent from the following detailed description based on the accompanying drawings.

도 2는 본 발명에 따른 커먼 레일 시스템용 고압연료펌프의 플런저부 단면도로서, 롤(11)과 슈(13)를 개재하여 캠프로 파일(15)에 연결되는 플런저(17)의 왕복 운동으로 고압을 발생시키도록 구성되어 있다.2 is a cross-sectional view of the plunger portion of the high-pressure fuel pump for the common rail system according to the present invention, the high pressure by the reciprocating motion of the plunger 17 connected to the camp furnace pile 15 via the roll 11 and the shoe 13 It is configured to generate.

특히, 이 고압연료펌프의 플런저부는 고압을 발생시킬 때, 롤(11)의 진행 방향(a)에 대한 롤(11)의 하중 방향(b)과 슈(13)에 가해지는 플런저(17)의 지지 방향(c)을 일치시켜 슈(13)의 편마모를 방지할 수 있도록 구성되어 있다.In particular, when the plunger portion of the high pressure fuel pump generates high pressure, the plunger 17 applied to the load direction b of the roll 11 and the shoe 13 with respect to the traveling direction a of the roll 11 is generated. It is comprised so that uneven wear of the shoe 13 may be prevented by matching the supporting direction c.

롤(11)은 캠(미도시)의 작동에 의하여 형성되는 캠프로 파일(15)에 연결 작동된다.The roll 11 is operated by connecting to the pile 15 as a camp formed by the operation of a cam (not shown).

슈(13)는 이 롤을 감싸도록 형성되며, 롤(11)을 통하여 캠의 작동력을 플런 저(17)로 전달할 수 있도록 구성되어 있다.The shoe 13 is formed to surround this roll, and is comprised so that the actuation force of a cam can be transmitted to the plunger 17 via the roll 11.

상기 롤(11)과 슈(13)로부터 캠의 작동력을 전달받는 플런저(17)는 고압연료펌프에서 왕복 운동하면서 고압을 발생시키게 된다.The plunger 17 which receives the operating force of the cam from the roll 11 and the shoe 13 generates high pressure while reciprocating in the high pressure fuel pump.

이 플런저(17)는 상기한 바와 같이 롤(11)의 하중 방향(b)과 플런저(17)의 지지 방향(c)을 일치시킬 수 있도록 구성되어 있다.This plunger 17 is comprised so that the load direction b of the roll 11 and the support direction c of the plunger 17 can match.

이와 같은 플런저(17)의 구조는 다양하게 형성될 수 있으나, 도 2에는 제1, 2 플런저(17a, 17b)의 2개로 구성된 것이 예시되어 있다.Such a plunger 17 may have various structures, but FIG. 2 illustrates that the first and second plungers 17a and 17b are configured.

제1 플런저(17a)는 롤(11)의 하중(b)이 슈(13)에 편심되게 작용하는 위치(도 2에서 좌측)에 설치되어 있다.The 1st plunger 17a is provided in the position (left side in FIG. 2) which the load b of the roll 11 acts eccentrically on the shoe 13. As shown in FIG.

즉, 롤(11)이 슈(13)에 하중을 가하는 방향(b)에 제1 플런저(17a)를 배치함으로서 롤(11)의 하중(b)이 슈(13)에 편심되게 작용하더라도 슈(13)가 제1 플런저(17a)에 경사지게 작용하는 것을 방지할 수 있게 된다.That is, by arranging the first plunger 17a in the direction b in which the roll 11 applies the load to the shoe 13, even if the load b of the roll 11 acts eccentrically on the shoe 13, the shoe ( It is possible to prevent 13 from acting obliquely on the first plunger 17a.

이 제1 플런저(17a)가 설치되는 위치(c)는 롤(11)의 중심 위치로부터 롤(11)의 진행 방향(a)에 대하여 반대측에 형성되어 있다.The position c in which this 1st plunger 17a is provided is formed in the opposite side with respect to the advancing direction a of the roll 11 from the center position of the roll 11.

제2 플런저(17b)는 상기 제1 플런저(17a)의 일측에 구비되어, 편심되는 슈(13)의 반대측 위치(도 2에서 우측)에 설치되어 있다. 이 제2 플런저(17b)는, 롤(11) 하중(b)이 가해지고 플런저(17)가 작동하게 되면, 슈(13)가 왕복 운동하면서 발생되는 편접촉 가능성을 제거한다.The 2nd plunger 17b is provided in one side of the said 1st plunger 17a, and is provided in the opposite position (right side in FIG. 2) of the shoe 13 to be eccentric. When the load 11 of the roll 11 is applied and the plunger 17 is operated, this second plunger 17b eliminates the possibility of one-sided contact generated while the shoe 13 reciprocates.

즉, 이 제2 플런저(17b)는 슈(13)를 기준으로 제1 플런저(17a)의 대칭 반대 위치에 설치되고, 제1 플런저(17a)와 동일하게 구비되므로 균등한 플런저 스트로크 가 작용하게 된다.That is, the second plunger 17b is installed at a position opposite to the symmetry of the first plunger 17a with respect to the shoe 13, and is provided in the same manner as the first plunger 17a, so that an equal plunger stroke is applied. .

이와 같은 제1, 2 플런저(17a, 17b)는 양방향 압축 방식의 펌핑 구조에 적용될 수 있다. 이 경우 양측에 상기와 같은 펌핑 구조의 플런저(17), 슈(13), 및 롤(11)이 구비되어 있다.The first and second plungers 17a and 17b may be applied to a bidirectional compression pumping structure. In this case, the plunger 17, the shoe 13, and the roll 11 of the above-mentioned pumping structure are provided in both sides.

따라서, 이 고압연료펌프는 일측에 각각 2개의 제1, 2 플런저(17a, 17b)를 구비하여 양측에 모두 4개의 플런저를 구비하여 하나의 펌핑 챔버를 형성하게 된다.Therefore, the high-pressure fuel pump includes two first and second plungers 17a and 17b on one side and four plungers on both sides to form one pumping chamber.

이와 같이 본 발명은 슈를 지지하는 플런저를 동일한 2개로 구성하여 롤의 하중 방향과 플런저의 지지 방향을 일치시키므로 롤 및 슈의 마모를 방지하여 내구 신뢰성을 향상시키고, 차량의 주행 중 출력 저하 문제를 해결할 수 있다.As described above, the present invention comprises two plungers supporting the shoe to match the load direction of the roll and the support direction of the plunger, thereby preventing wear of the roll and the shoe, improving durability, and reducing the problem of output reduction while the vehicle is running. I can solve it.

Claims (4)

삭제delete 캠프로 파일에 연결 작동되는 롤, 상기 롤을 감싸고 있는 슈, 및 상기 롤 및 슈를 통하여 전달되는 캠의 작동력에 의하여 상하 운동하면서 고압을 발생시키며, 롤의 하중 방향과 플런저의 지지 방향을 일치시키는 플런저를 포함하는 커먼 레일 시스템용 고압연료펌프에 있어서,High pressure is generated while moving up and down by the actuation force of the roll connected to the pile to the camp, the shoe surrounding the roll, and the cam transmitted through the roll and the shoe, and the load direction of the roll coincides with the support direction of the plunger. A high pressure fuel pump for a common rail system comprising a plunger, 상기 플런저는 롤의 하중이 슈에 편심되게 작용하는 위치에 설치되는 제1 플런저, 및The plunger may include a first plunger installed at a position where the load of the roll acts eccentrically on the shoe, and 상기 제1 플런저의 일측에 구비되어 편심되는 슈의 반대측 위치에 설치되는 제2 플런저를 포함하는 커먼 레일 시스템용 고압연료펌프.A high pressure fuel pump for a common rail system including a second plunger provided at one side of the first plunger and installed at a position opposite to the eccentric shoe. 청구항 2에 있어서,The method according to claim 2, 상기 제1 플런저가 설치되는 위치는 롤의 중심 위치로부터 롤의 진행 방향 반대측에 형성되는 것을 특징으로 하는 커먼 레일 시스템용 고압연료펌프.Wherein the first plunger is installed is a high-pressure fuel pump for a common rail system, characterized in that formed on the opposite side of the roll direction from the center position of the roll. 삭제delete
KR1020030085144A 2003-11-27 2003-11-27 High Pressure Fuel Pumps for Common Rail Systems Expired - Fee Related KR100569012B1 (en)

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KR100569012B1 true KR100569012B1 (en) 2006-04-07

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KR101406595B1 (en) 2012-12-17 2014-06-11 현대자동차주식회사 Lubrication apparatus of high pressure pump for common rail system
KR101428378B1 (en) 2013-04-05 2014-08-07 현대자동차주식회사 Lubrication apparatus of high pressure pump for common rail system
KR101439038B1 (en) 2013-06-26 2014-09-05 현대자동차주식회사 Lubrication apparatus of high pressure pump for common rail system

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