EP3014107A1 - Pumping device, in particular high pressure fuel pumping device for a fuel injection device - Google Patents

Pumping device, in particular high pressure fuel pumping device for a fuel injection device

Info

Publication number
EP3014107A1
EP3014107A1 EP14720621.3A EP14720621A EP3014107A1 EP 3014107 A1 EP3014107 A1 EP 3014107A1 EP 14720621 A EP14720621 A EP 14720621A EP 3014107 A1 EP3014107 A1 EP 3014107A1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
eccentric
cam
plunger
outer contour
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
EP14720621.3A
Other languages
German (de)
French (fr)
Other versions
EP3014107B1 (en
Inventor
Andreas Dutt
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 EP3014107A1 publication Critical patent/EP3014107A1/en
Application granted granted Critical
Publication of EP3014107B1 publication Critical patent/EP3014107B1/en
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
    • 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
    • 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
    • F02M59/04—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • 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
    • 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
    • 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
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/02—Fuel-injection apparatus having means for reducing wear
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/0265—Pumps feeding common rails

Definitions

  • the invention is based on a pumping device, in particular
  • a fuel high-pressure pumping device for a fuel injection device according to the preamble of claim 1.
  • Such a pumping device in the form of a high-pressure fuel pumping device is known from DE 102 56 528 AI.
  • This pumping device has at least one pump element, which via a plunger through a
  • Drive shaft is driven in a lifting movement.
  • the drive shaft in this case has a cam or eccentric on which the plunger is supported.
  • the drive shaft is rotatably mounted via at least one bearing, wherein the at least one bearing point is supplied lubricating medium.
  • Lubricating medium for example, lubricating oil is provided, which is supplied under pressure of at least one bearing point.
  • Lubricating oil is provided, which is supplied under pressure of at least one bearing point.
  • Lubrication is also required, which takes place in the known pumping device by due to the Drehbwegung the drive shaft fluidized or lubricating oil mist.
  • the pumping device according to the invention with the features according to claim 1 has the advantage that directed by the outer contour of the drive shaft from the bearing outlet lubricant is directed to the plunger and thus its lubrication and the lubrication of its support is ensured. For this purpose, no additional components are required.
  • the training according to claim 3 allows a directed outflow of the
  • the embodiment according to claim 7 ensures lubrication of the bearing of the roller in the plunger in a simple manner.
  • the embodiment according to claim 8 allows a directed introduction of lubricating medium between the roller and the plunger.
  • the embodiment according to claim 9 ensures lubrication of the bearing of the roller and of the bolt in the plunger in a simple manner.
  • Lubricating medium between the roller and the ram further improved.
  • FIG. 1 shows a detail of a pump device in a longitudinal section according to a first exemplary embodiment
  • FIG. 2 shows a partial view of the pump device according to a second exemplary embodiment
  • FIG. 3 shows the pump device in a cross-section along line III-III in FIG. Description of the embodiment
  • the pumping device has at least one
  • Pump element 10 which in turn has a pump piston 12 which is at least indirectly driven by a drive shaft 14 in a lifting movement.
  • the drive shaft 14 has one or more cams 16 or eccentric, via which the rotational movement of the drive shaft 14 in the
  • the pump piston 12 is supported via a plunger 18 on the cam 16 or eccentric of the drive shaft 14.
  • the pump element 10 has a housing 20 in which in a
  • Housing part 20 is referred to below as the cylinder head.
  • the pump piston 12 in the cylinder bore 22 defines a pump working space 24.
  • the pump working space 24 has an inlet valve 26, which is an inlet check valve opening into the pump working space 24, with an inlet 28 via which the Pump workspace 24 while radially inward to
  • the pump working chamber 24 also has an outlet valve 30 which, for example, opens out of the pump working chamber 24
  • Outlet check valve is, a connection to a drain 32, which can lead to a high-pressure accumulator 34 and over the radially outward of the drive means 14 directed away delivery stroke of the pump piston 12, fuel is displaced from the pump working chamber 24.
  • the plunger 18 is preferably designed as a roller tappet and has a plunger body 40, which is formed as a hollow cylinder. Within the plunger body 40, a bottom 42 is provided, on whose side facing away from the drive shaft 14, the pump piston 12 is supported at least indirectly with the piston foot. Surrounding the pump piston 12 is in the tappet body 40th also arranged a spring 44, which is for example a helical compression spring, and which is supported on the one hand at the bottom 42 and on the other hand on the cylinder head 20. By the spring 44 of the pump piston 12 and the plunger body 40 to the drive shaft 14 are acted upon.
  • a roller 46 is rotatably mounted, wherein the axis of rotation 47 of the roller 46 extends at least approximately parallel to the axis of rotation 15 of the drive shaft 14.
  • the roller 46 is arranged in the tappet body 40 on the side facing away from the pump piston 12 side of the bottom 42.
  • the roller 46 may be mounted on a bolt 48 inserted in the plunger body 40, wherein between the roller 46 and the bolt 48, a plain bearing bushing 50 may be arranged.
  • the bolt 48 is received in its end in two coaxial with each other in respect to the axis of rotation 47 of the roller 46 opposite walls 52 of the plunger body 40 provided holes 54.
  • the roller 46 may also be rotatably mounted via its outer jacket in a concavely concaved recess 56 of the tappet body 40 or a support element 57 inserted into the tappet body 40, in which case the pin 48 is omitted.
  • the gaps 56 increase starting from the bores 54 to the drive shaft 14. This can be achieved by increasing the distance between the mutually facing inner sides 53 of the walls 52 of the tappet body 40, starting from the bores 54 to the drive shaft 14.
  • the inner sides 53 of the walls 52 of the plunger body 40 may be, for example, beveled at least approximately conically. Alternatively, the inner sides 53 of the walls 52 of the plunger body 40 may also be curved.
  • the inner sides 53 of the walls 52 of the plunger body 40 extend approximately radially to the axis of rotation 47 of the roller 46 and the inner sides 53 facing end faces of the roller 46 are chamfered such that the column 58 to the drive shaft 14 increase ,
  • the drive shaft 14 is rotatably supported by at least one bearing point 60 in a housing 62, wherein the housing 62 may be a housing of the pump device or a housing of the internal combustion engine.
  • the drive shaft 14 is rotatably supported by two spaced apart in the direction of its axis of rotation 15 bearing points 60, wherein the bearing points 60 are arranged on opposite sides of the cam 16 or eccentric.
  • the bearings 60 are preferably designed as plain bearings and these may each comprise a bearing bush 64.
  • the bearings 60 respectively, as illustrated in Figures 1 and 2 by arrows liquid lubricant supplied, for example, lubricating oil from the lubricating oil circuit of
  • the lubricating medium is preferably supplied to the bearings 60 under elevated pressure so that it is pressed through the bearings 60. From the bearings 60 lubricant enters the direction of the axis of rotation 15 of the drive shaft 14 to the cam 16 or eccentric out. According to the invention, it is provided that the drive shaft 14 between at least one bearing point 60 and the cam 16 or eccentric having a shaped outer contour 66 that emerging from the bearing 60
  • Lubricant is selectively directed to the plunger 18 to ensure the lubrication of the plunger 18 or improve.
  • the outer contour 66 is designed in such a way that the diameter of the outer contour 66 increases away from the bearing point 60 and towards the cam 16 or eccentric. It can be provided that only between a bearing 60 and the cam 16 or eccentric an outer contour 66 may be provided. Preferably, between the cam 16 or eccentric and each bearing 60 each have an outer contour 66 is provided, both outer contours 66 are arranged and formed mirror images of each other.
  • the drive shaft 14 is shown with the outer contour 66 according to a first embodiment.
  • the outer contour 66 is at least approximately conical, so that its diameter increases linearly from the bearing 60 to the cam 16 or eccentric.
  • the outer contour 66 closes in the direction of the axis of rotation 15 of the drive shaft 14 seen directly or at a small distance to the bearing point 60 at.
  • the drive shaft 14, viewed in the direction of its axis of rotation 15, as viewed from the bearing point 60, starts toward the cam 16 or eccentric is first formed with a constant diameter and it is followed by the outer contour 66. The transition to the drive shaft 14 for
  • Outer contour 66 may be formed in a kink or rounded. Preferably, between the bearing 60 facing the end face of the cam 16 or eccentric and the bearing 60 facing away from the end
  • Diameter provided so that the outer contour 66 to the cam 16 or eccentric ends in an edge 70.
  • the section 68 forms a puncture on the drive shaft 14 between the cam 16 or eccentric and the edge 70 of the outer contour 66.
  • the edge 70 is arranged at least approximately in the region of the gap 56 between the roller 46 and the wall 52 of the tappet body 40.
  • the lubrication in the plunger 18 is improved or ensured, ie the bearing of the roller 46 on the pin 48 or in the recess 56 of the plunger body 40 or the support member 57 and / or the axial bearing of the roller 46 in the direction of its axis of rotation 47 in the plunger body 40th and / or the mounting of the bolt 48 in the bores 54 of the plunger body 40th
  • the drive shaft 14 is shown with the outer contour 66 according to a second embodiment, in which the outer contour 66 is concave, so that the diameter of the cam 16 or eccentric towards non-linearly increases but increases closer to the cam 16 or eccentric ,

Abstract

The pumping device, in particular high pressure fuel pumping device, has at least one pump element (10) which has a pump piston (12) which is driven in a reciprocating movement by a drive shaft (14) via a tappet (18), wherein the drive shaft (14) has at least one cam (16) or eccentric, on which the tappet (18) is supported at least indirectly. The drive shaft (14) is mounted rotatably via at least one bearing point (60), wherein the at least one bearing point (60) is fed lubricating medium which exits from the at least one bearing point (60) towards the at least one cam (16) or eccentric. Between the at least one bearing point (60) and the at least one cam (16) or eccentric, the drive shaft (14) has an outer contour (66) which increases in diameter from the at least one bearing point (60) towards the at least one cam (16) or eccentric and ends in the region of the tappet (18) as viewed in the direction of the rotational axis (15) of the drive shaft (14). Lubricating medium is guided in a targeted manner to the tappet (18) by way of the outer contour (66).

Description

Beschreibung Titel  Description title
Pumpyorrichtung, insbesondere Kraftstoffhochdruckpumpyorrichtung für eine Kraftstoffeinspritzeinrichtung Pump device, in particular high-pressure fuel pump device for a fuel injection device
Stand der Technik State of the art
Die Erfindung geht aus von einer Pumpvorrichtung, insbesondere The invention is based on a pumping device, in particular
Kraftstoffhochdruckpumpvorrichtung für eine Kraftstoffeinspritzeinrichtung, nach der Gattung des Anspruchs 1. A fuel high-pressure pumping device for a fuel injection device, according to the preamble of claim 1.
Eine solche Pumpvorrichtung in Form einer Kraftstoffhochdruckpumpvorrichtung ist durch die DE 102 56 528 AI bekannt. Diese Pumpvorrichtung weist wenigstens ein Pumpenelement auf, das über einen Stößel durch eine Such a pumping device in the form of a high-pressure fuel pumping device is known from DE 102 56 528 AI. This pumping device has at least one pump element, which via a plunger through a
Antriebswelle in einer Hubbewegung angetrieben wird. Die Antriebswelle weist dabei einen Nocken oder Exzenter auf, an dem sich der Stößel abstützt. Die Antriebswelle ist über wenigstens eine Lagerstelle drehbar gelagert, wobei der wenigstens einen Lagerstelle Schmiermedium zugeführt wird. Als Drive shaft is driven in a lifting movement. The drive shaft in this case has a cam or eccentric on which the plunger is supported. The drive shaft is rotatably mounted via at least one bearing, wherein the at least one bearing point is supplied lubricating medium. When
Schmiermedium ist beispielsweise Schmieröl vorgesehen, das unter Druck der wenigstens einen Lagerstelle zugeführt wird. Für den Stößel sowie dessen Abstützung an der Antriebswelle ist ebenfalls eine Schmierung erforderlich, die bei der bekannten Pumpvorrichtung durch infolge der Drehbwegung der Antriebswelle aufgewirbeltes Schmiermedium oder Schmierölnebel erfolgt. Hierbei ist es schwierig eine ausreichende Schmierung des Stößels und dessen Abstützung sicherzustellen, so dass es zu Verschleiss kommen kann. Offenbarung der Erfindung Lubricating medium, for example, lubricating oil is provided, which is supplied under pressure of at least one bearing point. For the plunger and its support on the drive shaft lubrication is also required, which takes place in the known pumping device by due to the Drehbwegung the drive shaft fluidized or lubricating oil mist. Here it is difficult to ensure adequate lubrication of the plunger and its support, so that it can cause wear. Disclosure of the invention
Vorteile der Erfindung Advantages of the invention
Die erfindungsgemäße Pumpvorrichtung mit den Merkmalen gemäß Anspruch 1 hat demgegenüber den Vorteil, dass durch die Außenkontur der Antriebswelle aus der Lagerstelle austretendes Schmiermedium gezielt zum Stößel geleitet wird und somit dessen Schmierung sowie die Schmierung von dessen Abstützung sichergestellt ist. Hierzu sind keine zusätzlichen Bauteile erforderlich. The pumping device according to the invention with the features according to claim 1 has the advantage that directed by the outer contour of the drive shaft from the bearing outlet lubricant is directed to the plunger and thus its lubrication and the lubrication of its support is ensured. For this purpose, no additional components are required.
In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und In the dependent claims are advantageous embodiments and
Weiterbildungen der erfindungsgemäßen Pumpvorrichtung angegeben. Die Ausbildung gemäß Anspruch 3 ermöglicht einen gerichteten Abfluss des Further developments of the pump device according to the invention indicated. The training according to claim 3 allows a directed outflow of the
Schmiermediums von der Antriebswelle zum Stößel hin. Durch die Ausbildung gemäß Anspruch 7 ist auf einfache Weise eine Schmierung der Lagerung der Rolle im Stößel sichergestellt. Die Ausbildung gemäß Anspruch 8 ermöglicht eine gerichtete Einbringung von Schmiermedium zwischen die Rolle und den Stößel. Durch die Ausbildung gemäß Anspruch 9 ist auf einfache Weise eine Schmierung der Lagerung der Rolle sowie des Bolzens im Stößel sichergestellt. Durch die Ausbildung gemäß Anspruch 10 oder 11 wird die Einbringung von Lubricant from the drive shaft to the ram out. The embodiment according to claim 7 ensures lubrication of the bearing of the roller in the plunger in a simple manner. The embodiment according to claim 8 allows a directed introduction of lubricating medium between the roller and the plunger. The embodiment according to claim 9 ensures lubrication of the bearing of the roller and of the bolt in the plunger in a simple manner. The training according to claim 10 or 11, the introduction of
Schmiermedium zwischen die Rolle und den Stößel weiter verbessert. Lubricating medium between the roller and the ram further improved.
Zeichnung drawing
Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 ausschnittsweise eine Pumpvorrichtung in einem Längsschnitt gemäß einem ersten Ausführungsbeispiel, Figur 2 die Pumpvorrichtung ausschnittsweise gemäß einem zweiten Ausführungsbeispiel und Figur 3 die Pumpvorrichtung ausschnittsweise in einem Querschnitt entlang Linie III-III in Figur 1. Beschreibung des Ausführungsbeispiels Several embodiments of the invention are illustrated in the drawings and explained in more detail in the following description. FIG. 1 shows a detail of a pump device in a longitudinal section according to a first exemplary embodiment, FIG. 2 shows a partial view of the pump device according to a second exemplary embodiment and FIG. 3 shows the pump device in a cross-section along line III-III in FIG. Description of the embodiment
In den Figuren 1 bis 3 ist in vereinfachter Darstellung ausschnittsweise eine Pumpvorrichtung gezeigt, die vorzugsweise eine In the figures 1 to 3 in a simplified representation of a fragmentary pumping device is shown, preferably a
Kraftstoffhochdruckpumpvorrichtung für eine Kraftstoffeinspritzeinrichtung einerHigh-pressure fuel pump device for a fuel injection device of a
Brennkraftmaschine ist. Die Pumpvorrichtung weist wenigstens ein Internal combustion engine is. The pumping device has at least one
Pumpenelement 10 auf, das wiederum einen Pumpenkolben 12 aufweist, der zumindest mittelbar durch eine Antriebswelle 14 in einer Hubbewegung angetrieben wird. Die Antriebswelle 14 weist einen oder mehrere Nocken 16 oder Exzenter auf, über den die Drehbewegung der Antriebswelle 14 in die Pump element 10, which in turn has a pump piston 12 which is at least indirectly driven by a drive shaft 14 in a lifting movement. The drive shaft 14 has one or more cams 16 or eccentric, via which the rotational movement of the drive shaft 14 in the
Hubbewegung des Pumpenkolbens 12 umgesetzt wird. Der Pumpenkolben 12 stützt sich über einen Stößel 18 am Nocken 16 oder Exzenter der Antriebswelle 14 ab. Das Pumpenelement 10 weist ein Gehäuse 20 auf, in dem in einer  Lifting movement of the pump piston 12 is implemented. The pump piston 12 is supported via a plunger 18 on the cam 16 or eccentric of the drive shaft 14. The pump element 10 has a housing 20 in which in a
Zylinderbohrung 22 der Pumpenkolben 12 dicht geführt ist, wobei das  Cylinder bore 22 of the pump piston 12 is guided tight, the
Gehäuseteil 20 nachfolgend als Zylinderkopf bezeichnet wird. Mit seinem der Antriebswelle 14 abgewandten Ende begrenzt der Pumpenkolben 12 in der Zylinderbohrung 22 einen Pumpenarbeitsraum 24. Der Pumpenarbeitsraum 24 weist über ein Einlassventil 26, das ein in den Pumpenarbeitsraum 24 hinein öffnendes Einlassrückschlagventil ist, eine Verbindung mit einem Zulauf 28 auf, über den der Pumpenarbeitsraum 24 beim radial nach innen zur Housing part 20 is referred to below as the cylinder head. With its end facing away from the drive shaft 14, the pump piston 12 in the cylinder bore 22 defines a pump working space 24. The pump working space 24 has an inlet valve 26, which is an inlet check valve opening into the pump working space 24, with an inlet 28 via which the Pump workspace 24 while radially inward to
Antriebseinrichtung 14 gerichteten Saughub des Pumpenkolbens 12 mit Kraftstoff befüllt wird. Der Pumpenarbeitsraum 24 weist außerdem über ein Auslassventil 30, das beispielsweise ein aus dem Pumpenarbeitsraum 24 heraus öffnendesDrive device 14 directed suction stroke of the pump piston 12 is filled with fuel. The pump working chamber 24 also has an outlet valve 30 which, for example, opens out of the pump working chamber 24
Auslassrückschlagventil ist, eine Verbindung mit einem Ablauf 32 auf, der zu einem Hochdruckspeicher 34 führen kann und über den beim radial nach außen von der Antriebseinrichtung 14 weg gerichteten Förderhub des Pumpenkolbens 12 Kraftstoff aus dem Pumpenarbeitsraum 24 verdrängt wird. Outlet check valve is, a connection to a drain 32, which can lead to a high-pressure accumulator 34 and over the radially outward of the drive means 14 directed away delivery stroke of the pump piston 12, fuel is displaced from the pump working chamber 24.
Der Stößel 18 ist vorzugsweise als Rollenstößel ausgebildet und weist einen Stößelkörper 40 auf, der hohlzylinderförmig ausgebildet ist. Innerhalb des Stößelkörpers 40 ist ein Boden 42 vorgesehen, an dessen der Antriebswelle 14 abgewandter Seite sich der Pumpenkolben 12 zumindest mittelbar mit dem Kolbenfuß abstützt. Den Pumpenkolben 12 umgebend ist im Stößelkörper 40 außerdem eine Feder 44 angeordnet, die beispielsweise eine Schraubendruckfeder ist, und die sich einerseits am Boden 42 und andererseits am Zylinderkopf 20 abstützt. Durch die Feder 44 werden der Pumpenkolben 12 und der Stößelkörper 40 zur Antriebswelle 14 hin beaufschlagt. The plunger 18 is preferably designed as a roller tappet and has a plunger body 40, which is formed as a hollow cylinder. Within the plunger body 40, a bottom 42 is provided, on whose side facing away from the drive shaft 14, the pump piston 12 is supported at least indirectly with the piston foot. Surrounding the pump piston 12 is in the tappet body 40th also arranged a spring 44, which is for example a helical compression spring, and which is supported on the one hand at the bottom 42 and on the other hand on the cylinder head 20. By the spring 44 of the pump piston 12 and the plunger body 40 to the drive shaft 14 are acted upon.
Im Stößelkörper 40 ist eine Rolle 46 drehbar gelagert, wobei die Drehachse 47 der Rolle 46 zumindest annähernd parallel zur Drehachse 15 der Antriebswelle 14 verläuft. Die Rolle 46 ist im Stößelkörper 40 auf der dem Pumpenkolben 12 abgewandten Seite des Bodens 42 angeordnet. Die Rolle 46 kann auf einem in den Stößelkörper 40 eingesetzten Bolzen 48 gelagert sein, wobei zwischen der Rolle 46 und dem Bolzen 48 eine Gleitlagerbuchse 50 angeordnet sein kann. Der Bolzen 48 ist in seinen Endbereichen in zwei koaxial zueinander in bezüglich der Drehachse 47 der Rolle 46 einander gegenüberliegenden Wandungen 52 des Stößelkörpers 40 vorgesehenen Bohrungen 54 aufgenommen. Alternativ kann die Rolle 46 auch wie in Figur 2 dargestellt in einer konkav gewölbten Vertiefung 56 des Stößelkörpers 40 oder eines in den Stößelkörper 40 eingesetzten Stützelements 57 über ihren Außenmantel drehbar gelagert sein, wobei dann der Bolzen 48 entfällt. In the plunger body 40, a roller 46 is rotatably mounted, wherein the axis of rotation 47 of the roller 46 extends at least approximately parallel to the axis of rotation 15 of the drive shaft 14. The roller 46 is arranged in the tappet body 40 on the side facing away from the pump piston 12 side of the bottom 42. The roller 46 may be mounted on a bolt 48 inserted in the plunger body 40, wherein between the roller 46 and the bolt 48, a plain bearing bushing 50 may be arranged. The bolt 48 is received in its end in two coaxial with each other in respect to the axis of rotation 47 of the roller 46 opposite walls 52 of the plunger body 40 provided holes 54. Alternatively, as shown in FIG. 2, the roller 46 may also be rotatably mounted via its outer jacket in a concavely concaved recess 56 of the tappet body 40 or a support element 57 inserted into the tappet body 40, in which case the pin 48 is omitted.
Aus Toleranzgründen und um die Drehbewegung der Rolle 46 nicht zu behindern sind zwischen der Rolle 46 und den in Richtung ihrer Drehachse 47 an diese angrenzenden Wandungen 52 des Stößelkörpers 40 Spalte 58 vorhanden. Es kann vorgesehen sein, dass sich die Spalte 56 ausgehend von den Bohrungen 54 zur Antriebswelle 14 hin vergrößern. Dies kann erreicht werden indem sich der Abstand zwischen den einander zugewandten Innenseiten 53 der Wandungen 52 des Stößelkörpers 40 ausgehend von den Bohrungen 54 zur Antriebswelle 14 hin vergrößert. Die Innenseiten 53 der Wandungen 52 des Stößelkörpers 40 können dabei beispielsweise zumindest annähernd konisch angeschrägt sein. Alternativ können die Innenseiten 53 der Wandungen 52 des Stößelkörpers 40 auch gekrümmt ausgebildet sein. Weiterhin alternativ kann auch vorgesehen sein, dass die Innenseiten 53 der Wandungen 52 des Stößelkörpers 40 etwa radial zur Drehachse 47 der Rolle 46 verlaufen und die den Innenseiten 53 zugewandten Stirnseiten der Rolle 46 derart angeschrägt sind, dass sich die Spalte 58 zur Antriebswelle 14 hin vergrößern. Die Antriebswelle 14 ist über wenigstens eine Lagerstelle 60 in einem Gehäuse 62 drehbar gelagert, wobei das Gehäuse 62 ein Gehäuse der Pumpvorrichtung oder ein Gehäuse der Brennkraftmaschine sein kann. Vorzugsweise ist die Antriebswelle 14 über zwei in Richtung ihrer Drehachse 15 zueinander beabstandete Lagerstellen 60 drehbar gelagert, wobei die Lagerstellen 60 auf gegenüberliegenden Seiten des Nockens 16 oder Exzenters angeordnet sind. Die Lagerstellen 60 sind vorzugsweise als Gleitlagerstellen ausgebildet und diese können jeweils eine Lagerbuchse 64 umfassen. Den Lagerstellen 60 wird jeweils wie in den Figuren 1 und 2 durch Pfeile verdeutlicht flüssiges Schmiermedium zugeführt, beispielsweise Schmieröl aus dem Schmierölkreislauf der For reasons of tolerance and not to hinder the rotational movement of the roller 46 are between the roller 46 and in the direction of its axis of rotation 47 adjacent to these walls 52 of the plunger body 40 column 58 available. It can be provided that the gaps 56 increase starting from the bores 54 to the drive shaft 14. This can be achieved by increasing the distance between the mutually facing inner sides 53 of the walls 52 of the tappet body 40, starting from the bores 54 to the drive shaft 14. The inner sides 53 of the walls 52 of the plunger body 40 may be, for example, beveled at least approximately conically. Alternatively, the inner sides 53 of the walls 52 of the plunger body 40 may also be curved. Further alternatively, it may also be provided that the inner sides 53 of the walls 52 of the plunger body 40 extend approximately radially to the axis of rotation 47 of the roller 46 and the inner sides 53 facing end faces of the roller 46 are chamfered such that the column 58 to the drive shaft 14 increase , The drive shaft 14 is rotatably supported by at least one bearing point 60 in a housing 62, wherein the housing 62 may be a housing of the pump device or a housing of the internal combustion engine. Preferably, the drive shaft 14 is rotatably supported by two spaced apart in the direction of its axis of rotation 15 bearing points 60, wherein the bearing points 60 are arranged on opposite sides of the cam 16 or eccentric. The bearings 60 are preferably designed as plain bearings and these may each comprise a bearing bush 64. The bearings 60, respectively, as illustrated in Figures 1 and 2 by arrows liquid lubricant supplied, for example, lubricating oil from the lubricating oil circuit of
Brennkraftmaschine. Das Schmiermedium wird den Lagerstellen 60 vorzugsweise unter erhöhtem Druck zugeführt, so dass dieses durch die Lagerstellen 60 hindurchgepresst wird. Aus den Lagerstellen 60 tritt Schmiermedium in Richtung der Drehachse 15 der Antriebswelle 14 zum Nocken 16 oder Exzenter hin aus. Erfindungsgemäß ist vorgesehen, dass die Antriebswelle 14 zwischen wenigstens einer Lagerstelle 60 und dem Nocken 16 oder Exzenter eine derart geformte Außenkontur 66 aufweist, dass aus der Lagerstelle 60 austretendes Internal combustion engine. The lubricating medium is preferably supplied to the bearings 60 under elevated pressure so that it is pressed through the bearings 60. From the bearings 60 lubricant enters the direction of the axis of rotation 15 of the drive shaft 14 to the cam 16 or eccentric out. According to the invention, it is provided that the drive shaft 14 between at least one bearing point 60 and the cam 16 or eccentric having a shaped outer contour 66 that emerging from the bearing 60
Schmiermedium gezielt zum Stößel 18 geleitet wird, um die Schmierung des Stößels 18 sicherzustellen oder zu verbessern. Die Außenkontur 66 ist dabei derart ausgebildet, dass sich der Durchmesser der Außenkontur 66 von der Lagerstelle 60 weg und zum Nocken 16 oder Exzenter hin vergrößert. Es kann vorgesehen sein, dass nur zwischen einer Lagerstelle 60 und dem Nocken 16 oder Exzenter eine Außenkontur 66 vorgesehen sein. Vorzugsweise ist zwischen dem Nocken 16 oder Exzenter und jeder Lagerstelle 60 jeweils eine Außenkontur 66 vorgesehen, wobei beide Außenkonturen 66 spiegelbildlich zueinander angeordnet und ausgebildet sind. Lubricant is selectively directed to the plunger 18 to ensure the lubrication of the plunger 18 or improve. The outer contour 66 is designed in such a way that the diameter of the outer contour 66 increases away from the bearing point 60 and towards the cam 16 or eccentric. It can be provided that only between a bearing 60 and the cam 16 or eccentric an outer contour 66 may be provided. Preferably, between the cam 16 or eccentric and each bearing 60 each have an outer contour 66 is provided, both outer contours 66 are arranged and formed mirror images of each other.
In Figur 1 ist die Antriebswelle 14 mit der Außenkontur 66 gemäß einem ersten Ausführungsbeispiel dargestellt. Die Außenkontur 66 ist dabei zumindest annähernd konisch ausgebildet, so dass sich deren Durchmesser linear von der Lagerstelle 60 zum Nocken 16 oder Exzenter vergrößert. Die Außenkontur 66 schließt sich in Richtung der Drehachse 15 der Antriebswelle 14 gesehen direkt oder mit geringem Abstand an die Lagerstelle 60 an. Alternativ kann auch vorgesehen sein, dass die Antriebswelle 14 in Richtung ihrer Drehachse 15 gesehen von der Lagerstelle 60 ausgehend zum Nocken 16 oder Exzenter hin zunächst mit konstantem Durchmesser ausgebildet ist und sich daran die Außenkontur 66 anschließt. Der Übergang an der Antriebswelle 14 zur In Figure 1, the drive shaft 14 is shown with the outer contour 66 according to a first embodiment. The outer contour 66 is at least approximately conical, so that its diameter increases linearly from the bearing 60 to the cam 16 or eccentric. The outer contour 66 closes in the direction of the axis of rotation 15 of the drive shaft 14 seen directly or at a small distance to the bearing point 60 at. Alternatively, it can also be provided that the drive shaft 14, viewed in the direction of its axis of rotation 15, as viewed from the bearing point 60, starts toward the cam 16 or eccentric is first formed with a constant diameter and it is followed by the outer contour 66. The transition to the drive shaft 14 for
Außenkontur 66 kann dabei in einem Knick oder gerundet ausgebildet sein. Vorzugsweise ist zwischen der der Lagerstelle 60 zugewandten Stirnseite des Nockens 16 oder Exzenters und dem der Lagerstelle 60 abgewandten Ende derOuter contour 66 may be formed in a kink or rounded. Preferably, between the bearing 60 facing the end face of the cam 16 or eccentric and the bearing 60 facing away from the end
Außenkontur 66 ein Abschnitt 68 der Antriebswelle 14 mit verringertem Outer contour 66, a portion 68 of the drive shaft 14 with reduced
Durchmesser vorgesehen, so dass die Außenkontur 66 zum Nocken 16 oder Exzenter hin in einer Kante 70 endet. Der Abschnitt 68 bildet einen Einstich an der Antriebswelle 14 zwischen dem Nocken 16 oder Exzenter und der Kante 70 der Außenkontur 66. Diameter provided so that the outer contour 66 to the cam 16 or eccentric ends in an edge 70. The section 68 forms a puncture on the drive shaft 14 between the cam 16 or eccentric and the edge 70 of the outer contour 66.
In Richtung der Drehachse 15 der Antriebswelle 14 gesehen ist die Kante 70 zumindest annähernd im Bereich des Spalts 56 zwischen der Rolle 46 und der Wandung 52 des Stößelkörpers 40 angeordnet. Bei der Drehbewegung der Antriebswelle 14 wird aus der Lagerstelle 60 austretendes Schmiermedium von der Kante 70 infolge der Zentrifugalkraft wie in den Figuren 1 und 2 durch Pfeile verdeutlicht radial nach außen weggeschleudert und tritt in den Spalt 58 ein. Hierdurch wird die Schmierung im Stößel 18 verbessert oder sichergestellt, also der Lagerung der Rolle 46 auf dem Bolzen 48 oder in der Vertiefung 56 des Stößelkörpers 40 oder des Stützelements 57 und/oder die axiale Lagerung der Rolle 46 in Richtung ihrer Drehachse 47 im Stößelkörper 40 und/oder die Lagerung des Bolzens 48 in den Bohrungen 54 des Stößelkörpers 40. Viewed in the direction of the axis of rotation 15 of the drive shaft 14, the edge 70 is arranged at least approximately in the region of the gap 56 between the roller 46 and the wall 52 of the tappet body 40. During the rotational movement of the drive shaft 14 60 emerging lubricating medium from the edge of the bearing 70 as a result of the centrifugal force as shown in Figures 1 and 2 illustrated by arrows is thrown radially outwards and enters the gap 58 a. As a result, the lubrication in the plunger 18 is improved or ensured, ie the bearing of the roller 46 on the pin 48 or in the recess 56 of the plunger body 40 or the support member 57 and / or the axial bearing of the roller 46 in the direction of its axis of rotation 47 in the plunger body 40th and / or the mounting of the bolt 48 in the bores 54 of the plunger body 40th
In Figur 2 ist die Antriebswelle 14 mit der Außenkontur 66 gemäß einem zweiten Ausführungsbeispiel dargestellt, bei dem die Außenkontur 66 konkav gekrümmt ausgebildet ist, so dass deren Durchmesser zum Nocken 16 oder Exzenter hin nicht linear zunimmt sondern bei Annäherung zum Nocken 16 oder Exzenter stärker zunimmt. In Figure 2, the drive shaft 14 is shown with the outer contour 66 according to a second embodiment, in which the outer contour 66 is concave, so that the diameter of the cam 16 or eccentric towards non-linearly increases but increases closer to the cam 16 or eccentric ,

Claims

Ansprüche claims
1. Pumpvorrichtung, insbesondere Kraftstoffhochdruckpumpvorrichtung, mit wenigstens einem Pumpenelement (10), das einen Pumpenkolben (12) aufweist, der über einen Stößel (18) durch eine Antriebswelle (14) in einer Hubbewegung angetrieben wird, wobei die Antriebswelle (14) wenigstens einen Nocken (16) oder Exzenter aufweist, an dem sich der Stößel (18) zumindest mittelbar abstützt, wobei die Antriebswelle (14) über wenigstens eine Lagerstelle (60) drehbar gelagert ist, wobei der wenigstens einen Lagerstelle (60) Schmiermedium zugeführt wird, das aus der wenigstens einen Lagerstelle (60) zum wenigstens einen Nocken (16) oder Exzenter hin austritt, dadurch gekennzeichnet, dass die Antriebswelle (14) zwischen der wenigstens einen Lagerstelle (60) und dem wenigstens einen Nocken (16) oder Exzenter eine sich im Durchmesser von der wenigstens einen Lagerstelle (60) zum wenigstens einen Nocken (16) oder Exzenter hin vergrößernde Außenkontur (66) aufweist, die in Richtung der Drehachse (15) der Antriebswelle (14) gesehen im Bereich des Stößels (18) endet. A pump device, in particular high-pressure fuel pump device, with at least one pump element (10) which has a pump piston (12) which is driven by a plunger (18) by a drive shaft (14) in a lifting movement, wherein the drive shaft (14) at least one Cam (16) or eccentric, on which the plunger (18) is supported at least indirectly, wherein the drive shaft (14) via at least one bearing point (60) is rotatably mounted, wherein the at least one bearing point (60) is supplied lubricating medium, the from the at least one bearing point (60) to at least one cam (16) or eccentric out, characterized in that the drive shaft (14) between the at least one bearing point (60) and the at least one cam (16) or eccentric in the Diameter of the at least one bearing point (60) to at least one cam (16) or eccentric towards enlarging outer contour (66) which in the direction of Drehach se (15) of the drive shaft (14) seen in the region of the plunger (18) ends.
2. Pumpvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die 2. Pumping device according to claim 1, characterized in that the
Antriebswelle (14) beiderseits des wenigstens einen Nockens (16) oder Drive shaft (14) on either side of the at least one cam (16) or
Exzenters über jeweils eine Lagerstelle (60) gelagert ist und dass beiderseits des wenigstens einen Nockens (16) oder Exzenters eine Außenkontur (66) vorgesehen ist. Eccentric over a respective bearing point (60) is mounted and that on both sides of the at least one cam (16) or eccentric an outer contour (66) is provided.
3. Pumpvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die 3. Pumping device according to claim 1, characterized in that the
Außenkontur (66) der Antriebswelle (14) zum wenigstens einen Nocken (16) oder Exzenter hin in einer zumindest annähernd radial zur Drehachse (15) der Antriebswelle (14) von dieser weggerichteten Kante (70) endet. Outer contour (66) of the drive shaft (14) to at least one cam (16) or eccentric in an at least approximately radially to the axis of rotation (15) of the drive shaft (14) directed away from this edge (70) ends.
4. Pumpvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Außenkontur (66) der Antriebswelle (14) zumindest annähernd konisch ausgebildet ist. 4. Pump device according to one of claims 1 to 3, characterized in that the outer contour (66) of the drive shaft (14) is at least approximately conical.
5. Pumpvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Außenkontur (66) gekrümmt, insbesondere konkav gekrümmt ausgebildet ist. 5. Pumping device according to one of claims 1 to 3, characterized in that the outer contour (66) is curved, in particular concavely curved.
6. Pumpvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebswelle (14) zwischen dem wenigstens einen Nocken (16) oder Exzenter und dem diesem zugewandten Ende der 6. Pump device according to one of the preceding claims, characterized in that the drive shaft (14) between the at least one cam (16) or eccentric and the end facing the
Außenkontur (66) einen Abschnitt (68) mit geringerem Durchmesser als das Ende der Außenkontur (66) aufweist. Outer contour (66) has a portion (68) with a smaller diameter than the end of the outer contour (66).
7. Pumpvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass im Stößel (18) eine Rolle (46) drehbar gelagert ist, über die sich der Stößel (18) am Nocken (16) oder Exzenter abstützt, und dass die Außenkontur (66) der Antriebswelle (14) in Richtung der Drehachse (15) der7. Pump device according to one of the preceding claims, characterized in that in the plunger (18) has a roller (46) is rotatably supported, via which the plunger (18) on the cam (16) or eccentric is supported, and that the outer contour (66 ) of the drive shaft (14) in the direction of the axis of rotation (15) of the
Antriebswelle (14) gesehen im Bereich einer Lagerung der Rolle (46) im Stößel (18) endet. Drive shaft (14) seen in the region of a storage of the roller (46) in the plunger (18) ends.
8. Pumpvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Stößel (18) einen Stößelkörper (40) aufweist, der eine zur Antriebswelle (14) hin offene8. A pump device according to claim 7, characterized in that the plunger (18) has a plunger body (40) which is open to the drive shaft (14)
Aufnahme aufweist, in der die Rolle (46) zur Antriebswelle (14) hin angeordnet ist, dass in Richtung der Drehachse (47) der Rolle (46) gesehen zwischen der Stirnseite der Rolle (46) und dem Stößelkörper (40) ein Spalt (58) vorhanden ist und dass die Außenkontur (66) der Antriebswelle (14) in Richtung der Drehachse (15) der Antriebswelle (14) gesehen im Bereich des Spalts (58) endet. Receiving, in which the roller (46) is arranged to the drive shaft (14) that seen in the direction of the axis of rotation (47) of the roller (46) between the end face of the roller (46) and the plunger body (40) has a gap ( 58) is present and that the outer contour (66) of the drive shaft (14) in the direction of the axis of rotation (15) of the drive shaft (14) ends in the region of the gap (58) ends.
9. Pumpvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Rolle (46) im Stößelkörper (40) über einen Bolzen (48) gelagert ist und dass sich der Bolzen (48) durch den zwischen der Rolle (46) und dem Stößelkörper (40) vorhandenen Spalt (58) erstreckt. 9. A pump device according to claim 8, characterized in that the roller (46) in the plunger body (40) via a bolt (48) is mounted and that the bolt (48) by the between the roller (46) and the plunger body (40 ) existing gap (58) extends.
10. Pumpvorrichtung nach einem der Ansprüche 7 bis 9, dadurch 10. Pumping device according to one of claims 7 to 9, characterized
gekennzeichnet, dass sich die in Richtung der Drehachse (47) der Rolle (46) gesehene Breite innerhalb des Stößelkörpers (40) zur Antriebswelle (14) hin derart vergrößert, dass der Spalt (58) zur Antriebswelle (14) hin größer wird. in that the width seen in the direction of the axis of rotation (47) of the roller (46) increases in such a way within the tappet body (40) towards the drive shaft (14) that the gap (58) becomes larger towards the drive shaft (14).
11. Pumpvorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die einander zugewandten Innenseiten (53) des Stößelkörpers (40) zur 11. A pump device according to claim 10, characterized in that the mutually facing inner sides (53) of the tappet body (40) for
Vergrößerung des Spalts (58) angeschrägt oder gekrümmt ausgebildet sind. Enlargement of the gap (58) bevelled or curved.
EP14720621.3A 2013-06-25 2014-04-30 Pumping device, in particular high pressure fuel pumping device for a fuel injection device Active EP3014107B1 (en)

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DE102013212047.8A DE102013212047A1 (en) 2013-06-25 2013-06-25 Pump device, in particular high-pressure fuel pump device for a fuel injection device
PCT/EP2014/058926 WO2014206609A1 (en) 2013-06-25 2014-04-30 Pumping device, in particular high pressure fuel pumping device for a fuel injection device

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CN105358819B (en) 2019-01-01

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