EP2585707A1 - Pompe, en particulier pompe à carburant haute pression - Google Patents

Pompe, en particulier pompe à carburant haute pression

Info

Publication number
EP2585707A1
EP2585707A1 EP11720792.8A EP11720792A EP2585707A1 EP 2585707 A1 EP2585707 A1 EP 2585707A1 EP 11720792 A EP11720792 A EP 11720792A EP 2585707 A1 EP2585707 A1 EP 2585707A1
Authority
EP
European Patent Office
Prior art keywords
pump
plunger body
lubricant
receptacle
drive shaft
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP11720792.8A
Other languages
German (de)
English (en)
Other versions
EP2585707B1 (fr
Inventor
Eberhard Maier
Markus Schetter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2585707A1 publication Critical patent/EP2585707A1/fr
Application granted granted Critical
Publication of EP2585707B1 publication Critical patent/EP2585707B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B23/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • 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
    • 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
    • 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
    • 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
    • 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
    • F04B1/0408—Pistons
    • 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
    • F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
    • 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
    • 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
    • F04B53/20—Filtering

Definitions

  • the invention is based on a pump, in particular
  • Such a pump in the form of a high-pressure fuel pump is through
  • This pump includes at least one
  • a plunger is arranged with a plunger body, which in a receptacle in the direction of the lifting movement of the
  • Plunger body is supplied via a supply line lubricant and from the recording is via a derivative lubricant into the plunger body to
  • Support element directed to a lubrication between the support element and
  • plunger body In case of wear of the plunger body and / or the receptacle or other components of the pump or internal combustion engine particles may be contained in the lubricant, which can then pass between the support member and the plunger body and there increased wear
  • the pump according to the invention with the features according to claim 1 has the advantage that the possible entry of particles between the support member and the plunger body is prevented by the annular gap filter or at least reduced and thus the wear of the pump is reduced.
  • the dependent claims are advantageous embodiments and
  • the annular gap filter is formed in a simple manner.
  • the embodiment according to claim 4 ensures that the inflow of lubricant into the tappet body between the support element and the tappet body is not hindered by the annular gap filter.
  • FIG. 1 shows a pump in a longitudinal section
  • Figure 2 shows a designated II in Figure 1 section of the pump in an enlarged view
  • Figure 3 shows a further enlarged section III of Figure 2.
  • a pump is shown, in particular a
  • the pump has at least one pump element 10, which in turn has a pump piston 12 which is driven at least indirectly by a drive shaft 14 in a lifting movement in at least approximately radial direction with respect to the axis of rotation 15 of the drive shaft 14.
  • the drive shaft 14 may be part of the pump or alternatively may also be provided that the pump does not have its own drive shaft and the drive shaft 14 is part of the internal combustion engine.
  • the drive shaft 14 can thereby For example, be a shaft of the internal combustion engine through which the gas exchange valves of the internal combustion engine are actuated.
  • the drive shaft 14 may have a cam 16 or eccentric for driving the pump piston 12.
  • the pump piston 12 is tightly guided in a cylinder bore 20 of a housing part 22 of the pump. With its end remote from the drive shaft 14, the pump piston 12 in the cylinder bore 20 defines a
  • the pump working chamber 24 has an inlet check valve 26 which opens into the latter and connects to an inlet 28 leading, for example, from a feed pump, via which the pump working space 24 moves radially inwards towards the axis of rotation 15
  • the pump working chamber 24 also has an outlet check valve 30 opening out therefrom and communicating with a drain 32 leading, for example, to a high-pressure fuel accumulator 34 and fuel via the delivery stroke of the pump piston 12 directed radially outward from the rotation axis 15 of the drive shaft 14 the
  • the pump piston 12 is supported indirectly via a plunger 40 on the cam 16 of the drive shaft 14 from.
  • the plunger 40 comprises a plunger body 42, in which a support element 44 is arranged, which is preferably designed in the form of a roll.
  • the plunger body 42 has an at least substantially circular cylindrical outer contour and is displaceably guided in a receptacle 46 in the direction of the stroke movement of the pump piston 12.
  • the receptacle 46 may be designed in the form of a bore, which is introduced in a housing part of the pump or in a housing part of the internal combustion engine. In the receptacle 46 opens a supply line 48 for lubricant, which is designed for example in the form of at least one bore.
  • lubricant is supplied into the receptacle 46 for lubrication between the plunger body 42 and the receptacle.
  • the lubricant may be fuel or lubricating oil of the internal combustion engine.
  • the support member 44 may be rotatably mounted directly in the plunger body 42 or in a carrier element inserted into the plunger body 42, for example a roller shoe.
  • the support member 44 is formed in the form of a cylindrical roller which is rotatably supported by a pin 50 in the plunger body 42.
  • the axis of rotation 45 of the roller 44 extends at least approximately parallel to the axis of rotation 15 of the drive shaft 14.
  • the roller 44 is hollow and optionally mounted on the bolt 50 via a bearing bush 52.
  • the tappet body 42 In its end region facing the drive shaft 14, the tappet body 42 has a bottom region 54 and, following this from the drive shaft 14, subsequently a jacket region 56.
  • the pump piston 12 is formed at least substantially hollow cylindrical and in this projecting the pump piston 12 with its emerging from the cylinder bore 20 end portion.
  • the pump piston 12 may be a his from the
  • Cylinder bore 20 projecting end portion have an enlarged diameter relative to the cylinder bore 20 Kolbenfuß 58, which at the bottom region
  • a sealing element 59 may be clamped, which is provided in particular when lubricating oil of the internal combustion engine is used as a lubricant for the plunger body 42 in the receptacle 46.
  • Sealing element 59 serves to prevent mixing of lubricating oil and fuel or at least keep it low.
  • a prestressed spring 60 is arranged through which the
  • the spring 60 is formed for example as a helical compression spring and protrudes into the
  • Pump piston 12 approximately coaxially and is located on a spring plate 62 on the radially outer edge of the bottom portion 54 of the plunger body 42 at.
  • the spring plate 62 supports Thus, in its central region on the piston 58 of the foot Pump piston 12 and holds it in abutment on the bottom portion 54 of the plunger body 42.
  • the plunger body 42 and the pump piston 12 are pressed to the drive shaft 12 out.
  • the plunger body 42 may be provided against rotation, which prevents the plunger body 42 can rotate in the receptacle about its longitudinal axis.
  • Such a rotation can be formed for example in a known manner by a arranged in the receptacle 46 pin in a
  • the plunger body 42 has a bottom portion 54 on the
  • Half shell trained recess 66 is mounted.
  • the plunger body 42 has in its outer shell an annular groove 70, which extends in the axial direction, for example, starting from the bottom portion 54 into the shell region 56 of the plunger body 42.
  • the annular groove 70 is in axial
  • Stroke movement of the plunger body 42 and thus of the pump piston 12 with the mouth of the supply line 48 of the lubricant in the receptacle 46 is in register.
  • the discharge 72 may be formed by at least one bore, wherein a plurality of, in particular two diametrically opposite bores may be provided which open into the recess 66 in each case in the region of the axial ends of the roller 44.
  • About the derivative 72 thus the storage of the roller 44 in the plunger body 42nd
  • a radial web 74 or collar is arranged in the annular groove 70, which has a larger diameter D3 than the annular groove 70, but the diameter D3 is only slightly smaller than the diameter D1.
  • the web 74 forms together with the receptacle 46 surrounding it an annular gap filter 76 for the over the discharge line 72 in the plunger body 42 for lubricating the roller 44 flowing lubricant.
  • the web 74 is arranged in the axial direction of the tappet body 42 near the mouth of the discharge line 72 on the tappet body 42 in the annular groove 70.
  • the difference between the diameter Dl of the guide portions 71 of the plunger body 42 and the diameter D3 of the web 74 is determined so that on the one hand a sufficiently large flow area for the lubricant is present and on the other hand sufficient particles from the
  • Lubricant are retained so that they can not get into the discharge line 72 and the plunger body 42.

Landscapes

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

Abstract

L'invention concerne une pompe comprenant au moins un élément de pompe qui comporte un piston de pompe qui est entraîné au moins indirectement par un arbre d'entraînement pour effectuer un mouvement alternatif. Un poussoir, disposé entre l'arbre d'entraînement et le piston de pompe, est doté d'un corps de poussoir qui est guidé de manière coulissante dans un logement dans la direction du mouvement alternatif du piston de pompe et prend appui contre l'arbre d'entraînement par l'intermédiaire d'un élément d'appui. Du lubrifiant est acheminé dans le logement par l'intermédiaire d'une conduite d'amenée et, par l'intermédiaire d'une conduite d'évacuation, le lubrifiant est dirigé du logement dans le corps de poussoir vers l'élément d'appui. Entre le corps de poussoir et le logement, un filtre à fente annulaire est disposé entre la conduite d'amenée de lubrifiant dans le logement et la conduite d'évacuation de lubrifiant dans le corps de poussoir.
EP11720792.8A 2010-06-24 2011-05-24 Pompe, en particulier pompe à carburant haute pression Active EP2585707B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010030498A DE102010030498A1 (de) 2010-06-24 2010-06-24 Pumpe, insbesondere Kraftstoffhochdruckpumpe
PCT/EP2011/058397 WO2011160908A1 (fr) 2010-06-24 2011-05-24 Pompe, en particulier pompe à carburant haute pression

Publications (2)

Publication Number Publication Date
EP2585707A1 true EP2585707A1 (fr) 2013-05-01
EP2585707B1 EP2585707B1 (fr) 2014-12-10

Family

ID=44144887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11720792.8A Active EP2585707B1 (fr) 2010-06-24 2011-05-24 Pompe, en particulier pompe à carburant haute pression

Country Status (7)

Country Link
US (1) US9074474B2 (fr)
EP (1) EP2585707B1 (fr)
JP (1) JP5529346B2 (fr)
KR (1) KR20130086542A (fr)
CN (1) CN102959227B (fr)
DE (1) DE102010030498A1 (fr)
WO (1) WO2011160908A1 (fr)

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ES2545122T3 (es) * 2012-04-25 2015-09-08 Delphi International Operations Luxembourg S.À R.L. Conjunto de bomba de combustible de alta presión
DE102012223413A1 (de) * 2012-12-17 2014-06-18 Robert Bosch Gmbh Rollenstößel für eine Pumpe, insbesondere Kraftstoffhochdruckpumpe, und Pumpe mit Rollenstößel
KR101428378B1 (ko) * 2013-04-05 2014-08-07 현대자동차주식회사 커먼레일 시스템용 고압펌프의 윤활장치
EP2821646A1 (fr) * 2013-07-01 2015-01-07 Delphi International Operations Luxembourg S.à r.l. Pompe haute pression
FR3020095B1 (fr) * 2014-04-18 2016-04-01 Renault Sas Pompe d'injection de carburant a piece de blocage en rotation et de lubrification du poussoir
EP2937566B1 (fr) * 2014-04-22 2016-10-19 Aktiebolaget SKF Dispositif de galet suiveur de came, notamment pour un pompe à injection de carburant
DE102014218489A1 (de) 2014-09-15 2016-03-17 Robert Bosch Gmbh Kolbenpumpe
WO2016055294A1 (fr) * 2014-10-09 2016-04-14 Robert Bosch Gmbh Unité de pompe pour fournir du carburant, de préférence du carburant diesel, à un moteur à combustion interne
WO2016105355A1 (fr) * 2014-12-23 2016-06-30 Cummins Inc. Approche de retenue de galet de poussoir
DE102015204321A1 (de) * 2015-03-11 2016-09-15 Robert Bosch Gmbh Kraftstoffhochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE102015210721A1 (de) * 2015-06-11 2016-12-15 Robert Bosch Gmbh Rollenstößel für eine Kolbenpumpe, Kolbenpumpe
GB201518964D0 (en) * 2015-10-27 2015-12-09 Delphi Internat Operations Luxembourg S À R L High pressure fuel pump
DE102016203768B4 (de) * 2015-11-12 2017-10-26 Robert Bosch Gmbh Pumpe, insbesondere Hochdruckpumpe eines Kraftstoffeinspritzsystems, mit einem Montageverbund von Stößel-Baugruppe und Pumpenzylinderkopf, insbesondere durch eine Rastverbindung zwischen Federteller und Stößelkörper
EP3173592B1 (fr) 2015-11-24 2021-01-06 Aktiebolaget SKF Dispositif de levier à galet ou à came suiveur avec trous d'alimentation en lubrifiant et procédé de lubrification
GB2548900A (en) * 2016-04-01 2017-10-04 Delphi Int Operations Luxembourg Sarl Tappet, high pressure pump comprising at least one tappet, engine comprising at least one tappet, engine comprising a high pressure pump having at least one
DE102016225633A1 (de) 2016-12-20 2018-06-21 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe
CN110709598B (zh) 2017-03-29 2021-08-06 瓦锡兰芬兰有限公司 用于向内燃活塞发动机供应燃料的燃料泵
KR102216489B1 (ko) 2017-03-29 2021-02-16 바르실라 핀랜드 오이 내연 피스톤 기관에 연료를 공급하기 위한 연료 펌프
EP3601777B1 (fr) 2017-03-29 2021-10-27 Wärtsilä Finland Oy Ensemble pompe à carburant haute pression pour moteur à piston à combustion interne
DE102017219367A1 (de) 2017-10-27 2019-05-02 Robert Bosch Gmbh Stößel, insbesondere Rollenstößel, für eine Pumpe und Pumpe mit Stößel
DE112018006859T5 (de) 2018-02-13 2020-10-01 Cummins Inc. Kraftstoffpumpe mit unabhängiger Kolbenabdeckung und -dichtung
DE102018204505A1 (de) 2018-03-23 2019-09-26 Robert Bosch Gmbh Rollenstößel, insbesondere für eine Pumpe und Pumpe mit Rollenstößel
DE102018120777A1 (de) * 2018-08-24 2020-02-27 Volkswagen Aktiengesellschaft Hochdruckpumpe umfassend eine Druckumlaufschmierung
IT201800009454A1 (it) * 2018-10-15 2020-04-15 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
DE102019130684A1 (de) * 2019-11-14 2021-05-20 Man Energy Solutions Se Kolbenpumpe

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Also Published As

Publication number Publication date
JP2013533417A (ja) 2013-08-22
CN102959227A (zh) 2013-03-06
US9074474B2 (en) 2015-07-07
EP2585707B1 (fr) 2014-12-10
US20130104730A1 (en) 2013-05-02
CN102959227B (zh) 2015-07-08
JP5529346B2 (ja) 2014-06-25
KR20130086542A (ko) 2013-08-02
DE102010030498A1 (de) 2011-12-29
WO2011160908A1 (fr) 2011-12-29

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