KR20080020452A - Piston pump with deposition protection - Google Patents

Piston pump with deposition protection Download PDF

Info

Publication number
KR20080020452A
KR20080020452A KR1020070052036A KR20070052036A KR20080020452A KR 20080020452 A KR20080020452 A KR 20080020452A KR 1020070052036 A KR1020070052036 A KR 1020070052036A KR 20070052036 A KR20070052036 A KR 20070052036A KR 20080020452 A KR20080020452 A KR 20080020452A
Authority
KR
South Korea
Prior art keywords
pump
piston
cylinder
piston pump
recess
Prior art date
Application number
KR1020070052036A
Other languages
Korean (ko)
Other versions
KR101455857B1 (en
Inventor
토르스텐 그리츠코
슈테판 하스
토마스 하만
빌프리드 카우프만
루드비그 마이어
홀거 샤르
Original Assignee
만 디젤 에스이
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 만 디젤 에스이 filed Critical 만 디젤 에스이
Publication of KR20080020452A publication Critical patent/KR20080020452A/en
Application granted granted Critical
Publication of KR101455857B1 publication Critical patent/KR101455857B1/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
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/18—Lubricating
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

A piston pump for blocking deposition is provided to prevent lacquering from occurring between a pump cylinder and a pump piston. A piston pump is provided with a supply member(8) passing through a pump housing(1) in order to guide a fluid into a ring-type groove(7) formed in a pump cylinder. At least one recess(9) is provided in a guide area between the pump cylinder and the pump piston. The fluid moves in a shaft direction in the recess. The fluid is lubricant conveyed such that the fluid is gradually distanced from a stroke volume. Fuel is discharged through pressure reducing grooves(3,6) connected to fuel exhaust holes(4,5). The pressure reducing grooves are provided in the pump cylinder.

Description

침착물 방지식 피스톤 펌프{PISTON PUMP WITH DEPOSITION PROTECTION}Deposition-resistant piston pump {PISTON PUMP WITH DEPOSITION PROTECTION}

도 1은 본 발명의 실시예에 따른 피스톤 펌프의 개략도.1 is a schematic diagram of a piston pump according to an embodiment of the invention.

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

1: 펌프 하우징 2: 펌프 피스톤1: pump housing 2: pump piston

3, 6: 감압 홈 4, 5: 배출구3, 6: decompression groove 4, 5: outlet

7: 윤활유 링 홈 8: 윤활유 공급구7: Lube oil ring groove 8: Lube oil supply port

9: 리세스 11: 캠 구동부9: recess 11: cam drive

12: 펌프 실린더 13: 행정 체적12: pump cylinder 13: stroke volume

본 발명은, 특히 선박 엔진용 내연기관의 커먼 레일 연료 분사 시스템에 사용하기 위한 윤활식 피스톤 펌프에 관한 것이다.The invention relates in particular to lubricated piston pumps for use in common rail fuel injection systems of internal combustion engines for ship engines.

선행 기술에는 커먼 레일 시스템에 사용하기 위한 고압 펌프가 공지되어 있다. 상기 펌프는 일반적으로 펌프 실린더와 펌프 피스톤 사이의 홈 밀봉으로 인해 낮은 누설 손실을 나타내는 피스톤 펌프 또는 행정 펌프이다. 펌프 피스톤 운동은 펌프 피스톤 또는 피스톤 로드에 있는 캠 구동부에 의해 발생한다.Prior art is known high pressure pumps for use in common rail systems. The pump is generally a piston pump or stroke pump which exhibits low leakage losses due to the groove sealing between the pump cylinder and the pump piston. Pump piston movement is generated by the cam drive on the pump piston or piston rod.

선행 기술에 공지된 펌프를 육상 차량에 사용하는 경우, 펌프 실린더와 펌프 피스톤 사이의 낮은 누설 손실은 긍정적으로 평가된다. 그러나, 내연기관이, 예컨대 선박 엔진에서와 같이 중유(HFO)로 작동되는 경우, 펌프 실린더와 펌프 피스톤 사이로 누설 연료로서 들어가기 때문에, 펌핑될 연료에 의해 펌프 실린더와 펌프 피스톤 사이의 안내면 상에 침착물이 생긴다. 안내면 상에 중유에 의해 침착물이 형성되는 것을 래커링이라 한다.When a pump known in the prior art is used in a land vehicle, the low leakage loss between the pump cylinder and the pump piston is evaluated positively. However, when the internal combustion engine is operated with heavy oil (HFO), for example in a marine engine, it enters as leaking fuel between the pump cylinder and the pump piston, and therefore deposits on the guide surface between the pump cylinder and the pump piston by the fuel to be pumped. This occurs. The formation of deposits by heavy oil on the guide surface is called lacquering.

본 발명의 과제는 사용되는 연료에 의해 야기되는, 펌프 실린더와 펌프 피스톤 사이의 래커링을 방지하는 피스톤 펌프를 제공하는 것이다.It is an object of the present invention to provide a piston pump which prevents lacquering between the pump cylinder and the pump piston caused by the fuel used.

상기 과제는 본 발명의 독립 청구항에 의해 해결된다. 종속 청구항은 본 발명의 바람직한 실시예를 제시한다.The problem is solved by the independent claims of the present invention. The dependent claims present preferred embodiments of the invention.

본 발명에 따라 하나 이상의 펌프 실린더가 형성된 펌프 하우징을 포함하는 펌프 피스톤이 제공된다. 펌프 실린더 내에서 펌프 피스톤은 축 방향으로 왕복 안내된다. 펌프 피스톤은 캠 구동부, 예컨대 편심으로 지지된 디스크 또는 캠에 의해 구동된다. 펌프 피스톤과 펌프 실린더 사이에는 공간, 소위 작동 공간 또는 행정 체적이 형성된다. 본 발명에 따른 펌프는 하나 이상의 피스톤을 가진 레이디얼 피스톤 펌프 또는 액시얼 피스톤 펌프일 수 있다. 펌프 실린더와 펌프 피스톤 사이에는 하나 이상의 리세스가 제공되고, 상기 리세스 내에서 유체, 바람직하게는 윤활제가 축 방향으로 이송된다.According to the present invention there is provided a pump piston comprising a pump housing in which at least one pump cylinder is formed. In the pump cylinder the pump piston is reciprocally guided in the axial direction. The pump piston is driven by a cam drive, such as an eccentrically supported disk or cam. A space, a so-called working space or stroke volume, is formed between the pump piston and the pump cylinder. The pump according to the invention may be a radial piston pump or an axial piston pump with one or more pistons. One or more recesses are provided between the pump cylinder and the pump piston, in which fluid, preferably lubricant, is transferred in the axial direction.

펌프 실린더와 펌프 피스톤 사이의 공간에서 연료를 축 방향으로, 즉 펌프 피스톤의 운동 방향으로 안내할 수 있는 리세스가 펌프 실린더와 펌프 피스톤 사이에 제공됨으로써, 펌프 실린더와 펌프 피스톤 사이의 가이드면 또는 가이드 영역이, 예컨대 윤활유로 세척된다. 윤활유로 안내면을 세척함으로써, 안내면의 영역에서의 침착이 일어나지 않을 수 있고 래커링이 효과적으로 방지될 수 있다. 바람직하게는 윤활유가 펌프 실린더의 내벽에 있는 리세스를 통해 분배된 다음, 피스톤 펌프의 행정 체적으로부터 펌프 피스톤 로드를 향해 배출된다. 본 발명에 따른 피스톤 펌프는 펌프 피스톤과 펌프 실린더 사이의 갭 내에 침착하는 경향을 갖는 모든 연료에 적합하다. 즉, 예컨대 유채유(rape oil)와 같은 대체 연료로 구동되는 육상용 차량의 피스톤 펌프에도 적합하다.In the space between the pump cylinder and the pump piston, a recess is provided between the pump cylinder and the pump piston to guide fuel axially, ie in the direction of movement of the pump piston, thereby providing a guide surface or guide between the pump cylinder and the pump piston. The area is washed with lubricating oil, for example. By washing the guide surface with lubricating oil, deposition in the area of the guide surface may not occur and lacquering can be effectively prevented. Preferably the lubricant is dispensed through a recess in the inner wall of the pump cylinder and then discharged from the stroke volume of the piston pump towards the pump piston rod. The piston pump according to the invention is suitable for all fuels which tend to deposit in the gap between the pump piston and the pump cylinder. That is, it is also suitable for piston pumps of land vehicles driven by alternative fuels such as rape oil, for example.

본 발명의 실시예에 따르면, 가급적 적은 제조 비용으로 펌프 피스톤 내에 리세스가 제공된다. 전술한 구성에 따라 리세스가 펌프 피스톤 내에 제공되지만, 본 발명에 따른 펌프 피스톤 및 펌프 실린더 내의 리세스들과의 조합도 가능하다. 또한, 리세스들은 조합될 수 있는 다양한 형태로 피스톤에 구현될 수 있다. 예컨대, 종방향 홈, 횡방향 홈 및 나선형 홈이 펌프 피스톤의 종방향으로 제공될 수 있다. 상기 홈들은 불연속적인 형태일 수 있다. 또한, 펌프 피스톤 상에 형성된 오목부에 의해 연료를 안내면을 따라 이송하는 이송 컵이 형성될 수 있다.According to an embodiment of the invention, a recess is provided in the pump piston at the lowest possible manufacturing cost. A recess is provided in the pump piston according to the above arrangement, but combinations with recesses in the pump piston and pump cylinder according to the invention are also possible. The recesses may also be embodied in the piston in various forms that may be combined. For example, longitudinal grooves, transverse grooves and helical grooves may be provided in the longitudinal direction of the pump piston. The grooves may be in discrete form. In addition, a transfer cup for transferring fuel along the guide surface may be formed by a recess formed on the pump piston.

이하에서는, 첨부한 도면을 참고로 본 발명을 구체적으로 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 피스톤 펌프의 실시예를 도시하고, 이 실시예에서는 불연속적인 나선형 홈이 펌프 피스톤(2)의 외주면 상에 리세스(9)로서 형성되어 있 다. 본 실시예에서는 타원형 캠인 캠 구동부(11)에 의해, 펌프 피스톤(2)이 펌프 하우징(1) 내에서, 즉 펌프 실린더(12) 내에서 상하로 이동된다. 펌프 실린더(12) 및 펌프 피스톤(2)은 펌프 하우징(1) 내의 행정 체적(13)을 형성한다. 펌프 실린더 내에 링형으로 형성된 제 1 감압 홈(3) 및 제 2 감압 홈으로부터 제 1 배출구(4) 및 제 2 배출구(5)를 통해 연료가 배출된다. 연료의 누설압력은 바람직하게는 1 bar 이상이다. 그러나, 연료의 누설압력은 적어도 배출구(4, 5)에서의 압력 보다 더 높아야 한다.1 shows an embodiment of a piston pump according to the invention, in which a discontinuous spiral groove is formed as a recess 9 on the outer circumferential surface of the pump piston 2. In this embodiment, the pump piston 2 is moved up and down in the pump housing 1, that is, in the pump cylinder 12, by the cam drive 11, which is an elliptical cam. The pump cylinder 12 and the pump piston 2 form a stroke volume 13 in the pump housing 1. Fuel is discharged from the first pressure reducing groove 3 and the second pressure reducing groove formed in a ring shape in the pump cylinder through the first outlet 4 and the second outlet 5. The leakage pressure of the fuel is preferably at least 1 bar. However, the leakage pressure of the fuel should be at least higher than the pressure at the outlets 4, 5.

윤활유는 윤활유 공급구(8)를 통해 윤활유 링 홈(7)에 공급된다. 이렇게 공급된 윤활유는 리세스(9)를 통해 펌프 피스톤(2)과 펌프 실린더(12) 사이의 영역 내로 이른다. 초과량의 윤활유는 캠 구동부(11)의 방향으로 배출된다.Lubricant is supplied to the lubricating oil ring groove 7 via the lubricating oil supply port 8. The lubricant thus supplied reaches through the recess 9 into the region between the pump piston 2 and the pump cylinder 12. The excess amount of lubricant is discharged in the direction of the cam drive unit 11.

감압 홈들(3, 6)은 바람직하게는 펌프 피스톤(2)의 실린더측 단부, 즉 펌프 하우징(1)과 함께 행정 체적(13)을 형성하는 펌프 피스톤의 단부와 윤활유 링 홈(7) 사이에 형성된다.The pressure reducing grooves 3, 6 are preferably between the cylinder side end of the pump piston 2, ie the end of the pump piston forming the stroke volume 13 together with the pump housing 1 and the lubricant ring groove 7. Is formed.

본 발명에 따르면, 낮은 누설 손실을 나타내며 사용 연료에 의해 야기되는 펌프 실린더와 펌프 피스톤 사이의 래커링을 방지할 수 있는 피스톤 펌프를 얻는다.According to the present invention, a piston pump is obtained which exhibits low leakage loss and can prevent lacquering between the pump cylinder and the pump piston caused by the fuel used.

Claims (11)

하나 이상의 펌프 실린더(12)가 형성된 펌프 하우징(1)을 포함하며 공통의 압력관을 구비하는 시스템에 연료를 이송하기 위한 내연기관의 연료 분사 장치용 펌프 피스톤으로서, 상기 펌프 실린더 내에 펌프 피스톤(2)이 배치되며, 상기 펌프 피스톤은 안내면을 따라 축 방향으로 움직일 수 있고 상기 펌프 피스톤(2)의 실린더측 단부에서 상기 펌프 실린더(12)와 함께 행정 체적(13)을 형성하는 것인 연료 분사 장치용 피스톤 펌프에 있어서,A pump piston for a fuel injection device of an internal combustion engine for delivering fuel to a system comprising a pump housing (1) in which at least one pump cylinder (12) is formed and having a common pressure tube, in which the pump piston (2) Is arranged, wherein the pump piston is movable axially along the guide surface and forms a stroke volume 13 with the pump cylinder 12 at the cylinder side end of the pump piston 2. In a piston pump, 상기 펌프 실린더(12)에 형성된 링형 홈(7) 내로 유체를 안내하기 위해, 상기 펌프 하우징(1)을 통해 공급구(8)가 제공되며, 상기 펌프 실린더(12)와 상기 펌프 피스톤(2) 사이의 가이드 영역에는 하나 이상의 리세스(9)가 제공되고, 상기 리세스 내에서 유체가 축 방향으로 이송되는 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.In order to guide the fluid into the ring-shaped groove 7 formed in the pump cylinder 12, a supply port 8 is provided through the pump housing 1, the pump cylinder 12 and the pump piston 2. A piston pump for a fuel injection device, characterized in that at least one recess (9) is provided in the guide region therebetween, in which fluid is conveyed in the axial direction. 제1항에 있어서, 상기 유체는 축 방향으로 상기 행정 체적(13)으로부터 멀어지는 방향으로 이송되는 윤활유인 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.2. The piston pump of claim 1, wherein the fluid is a lubricating oil conveyed in a direction away from the stroke volume in the axial direction. 제1항 또는 제2항에 있어서, 상기 펌프 실린더(12) 내에 형성되며 상기 펌프 하우징(1)을 통해 배출구(4, 5)에 연결된 하나 이상의 링형 감압 홈(3, 6)을 통해 누설된 연료가 배출되는 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.Fuel leaked through at least one ring-shaped pressure reducing groove (3, 6) formed in the pump cylinder (12) and connected to the outlet (4, 5) through the pump housing (1). Piston pump for fuel injector, characterized in that the discharge. 제3항에 있어서, 상기 하나 이상의 감압 홈(3, 6)이 상기 링형 홈(7)과 상기 행정 체적(13) 사이에 제공되는 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.4. A piston pump according to claim 3, characterized in that said at least one pressure reducing groove (3, 6) is provided between said ring-shaped groove (7) and said stroke volume (13). 제1항 내지 제4항 중 어느 하나의 항에 있어서, 상기 리세스(9)가 상기 펌프 피스톤(2) 및/또는 상기 펌프 실린더(12)에 제공되는 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.5. The piston pump according to claim 1, wherein the recess 9 is provided in the pump piston 2 and / or the pump cylinder 12. 6. . 제5항에 있어서, 상기 리세스(9)가 적어도 부분적으로 종방향 홈의 형태로 제공되는 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.6. A piston pump according to claim 5, characterized in that the recess (9) is provided at least partially in the form of a longitudinal groove. 제5항 또는 제6항에 있어서, 상기 리세스(9)가 적어도 부분적으로 방사방향 홈의 형태로 제공되는 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.7. A piston pump as claimed in claim 5 or 6, characterized in that the recess (9) is provided at least partially in the form of a radial groove. 제5항 내지 제7항 중 어느 하나의 항에 있어서, 상기 리세스(9)가 적어도 부분적으로 나선형 홈의 형태로 및/또는 중단된 나선형 홈의 형태로 제공되는 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.8. The fuel injector according to claim 5, wherein the recess 9 is provided at least partially in the form of a spiral groove and / or in the form of a suspended spiral groove. 9. Piston pump. 제1항 내지 제8항 중 어느 하나의 항에 있어서, 상기 피스톤 펌프가 고압 영역에 사용하기 위한 레이디얼 피스톤 펌프 또는 액시얼 피스톤 펌프인 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.The piston pump for a fuel injection device according to any one of claims 1 to 8, wherein the piston pump is a radial piston pump or an axial piston pump for use in the high pressure region. 제1항 내지 제9항 중 어느 하나의 항에 있어서, 상기 내연기관이 중유로 작동되는 선박 엔진인 것을 특징으로 하는 연료 분사 장치용 피스톤 펌프.The piston pump for a fuel injection device according to any one of claims 1 to 9, wherein the internal combustion engine is a marine engine operated with heavy oil. 제1항 내지 제10항 중 어느 하나의 항에 따른 피스톤 펌프를 포함하는 내연기관.An internal combustion engine comprising a piston pump according to any one of claims 1 to 10.
KR1020070052036A 2006-08-29 2007-05-29 Piston pump with deposition protection KR101455857B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006040468A DE102006040468A1 (en) 2006-08-29 2006-08-29 Lubricating piston pump for fuel injection device, particularly for application in common rail fuel injection device of internal combustion engine, pump housing in which pump cylinder is formed, and recess is provided in guiding area
DE102006040468.8 2006-08-29

Publications (2)

Publication Number Publication Date
KR20080020452A true KR20080020452A (en) 2008-03-05
KR101455857B1 KR101455857B1 (en) 2014-11-03

Family

ID=38212333

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070052036A KR101455857B1 (en) 2006-08-29 2007-05-29 Piston pump with deposition protection

Country Status (5)

Country Link
JP (1) JP2008057527A (en)
KR (1) KR101455857B1 (en)
CN (1) CN101135285A (en)
DE (1) DE102006040468A1 (en)
FI (1) FI122862B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4112936A4 (en) * 2020-02-28 2024-04-03 Yoshino Kogyosho Co Ltd Plunger pump and liquid blow molding device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012223334A1 (en) * 2012-12-17 2014-06-18 Robert Bosch Gmbh Piston-cylinder unit
DE102014010718B4 (en) * 2014-07-19 2020-03-19 Woodward L'orange Gmbh Piston pump for a fuel injection system
CN110645129A (en) * 2019-11-08 2020-01-03 重庆红江机械有限责任公司 Marine low-speed machine electric control single high-pressure oil pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123492A (en) * 1982-07-08 1984-02-01 Lucas Ind Plc Fuel injection pump
JPS59221459A (en) * 1983-05-28 1984-12-13 Mitsubishi Heavy Ind Ltd Fuel injection pump
DD264259A1 (en) * 1987-08-31 1989-01-25 Aken Einspritzgeraetewerk FUEL INJECTION PUMP FOR A PISTON PISTON ENGINE
DE4030951B4 (en) * 1990-09-29 2004-03-18 Robert Bosch Gmbh Heavy oil fuel injector for injection internal combustion engines
DE10032577A1 (en) * 2000-07-05 2002-01-24 Bosch Gmbh Robert Radial piston pump
KR100773437B1 (en) * 2001-02-26 2007-11-05 베르트질레 슈바이츠 악티엔게젤샤프트 A high pressure piston in cylinder unit
JP4013199B2 (en) * 2003-05-16 2007-11-28 ボッシュ株式会社 Fuel injection pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4112936A4 (en) * 2020-02-28 2024-04-03 Yoshino Kogyosho Co Ltd Plunger pump and liquid blow molding device

Also Published As

Publication number Publication date
FI122862B (en) 2012-08-15
FI20070476A0 (en) 2007-06-15
DE102006040468A1 (en) 2008-03-06
KR101455857B1 (en) 2014-11-03
JP2008057527A (en) 2008-03-13
FI20070476A (en) 2008-03-01
CN101135285A (en) 2008-03-05

Similar Documents

Publication Publication Date Title
CN101050746B (en) Piston pump flushed by fuel oil
US20110114046A1 (en) Internal combustion engine comprising at least one camshaft
EP3292298B1 (en) Fuel pump assembly
CN105008718A (en) High pressure pump
KR20240058173A (en) high pressure fuel pump
KR101455857B1 (en) Piston pump with deposition protection
KR20170044754A (en) High-pressure fuel pump, in particular for a fuel injection device of an internal combustion engine
JP6552932B2 (en) Fuel pump
JP5412570B2 (en) Fuel pump for turbocharged large two-stroke diesel engines
JP6605274B2 (en) Fuel pump
KR101375200B1 (en) Fuel pump
CN107345516B (en) Plunger sealing ring for high-pressure fuel pump and corresponding high-pressure fuel pump
KR20120096100A (en) Purging method and system for preventing formation of deposits inside fuel pump
EP1517039A1 (en) Pump assembly
CN110691904B (en) High-pressure fuel pump assembly for internal combustion piston engine
KR20190126013A (en) Fuel pump for fueling internal combustion piston engines
US10794347B1 (en) Roller reaction force lubrication system
JP2004502092A (en) Radial piston pump
KR102216495B1 (en) Fuel pump for fueling an internal combustion piston engine
KR20020017397A (en) High-pressure supply pump
KR20000026444A (en) High voltage fuel pump for directly injecting gasoline
JP2011226327A (en) Fuel feeder for gas engine
JP2016148268A (en) Fuel supply device

Legal Events

Date Code Title Description
A201 Request for examination
AMND Amendment
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
J201 Request for trial against refusal decision
B701 Decision to grant
GRNT Written decision to grant