EP2825773A1 - Pompe enfichable - Google Patents

Pompe enfichable

Info

Publication number
EP2825773A1
EP2825773A1 EP13819023.6A EP13819023A EP2825773A1 EP 2825773 A1 EP2825773 A1 EP 2825773A1 EP 13819023 A EP13819023 A EP 13819023A EP 2825773 A1 EP2825773 A1 EP 2825773A1
Authority
EP
European Patent Office
Prior art keywords
space
pump
piston
cylinder
plug
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
EP13819023.6A
Other languages
German (de)
English (en)
Other versions
EP2825773B1 (fr
Inventor
Ngoc-Tam Vu
Uwe Nigrin
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.)
Vitesco Technologies GmbH
Original Assignee
Continental Automotive Technologies 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 Continental Automotive Technologies GmbH filed Critical Continental Automotive Technologies GmbH
Publication of EP2825773A1 publication Critical patent/EP2825773A1/fr
Application granted granted Critical
Publication of EP2825773B1 publication Critical patent/EP2825773B1/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
    • 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
    • F02M59/02—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
    • F02M59/025—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 a single piston
    • F02M59/027—Unit-pumps, i.e. single piston and cylinder pump-units, e.g. for cooperating with a camshaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F04B1/0421—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
    • 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
    • F04B1/0439—Supporting or guiding means for the 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
    • F04B1/0448—Sealing means, e.g. for shafts or housings
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • 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
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/20—Other positive-displacement pumps
    • F04B19/22—Other positive-displacement pumps of reciprocating-piston type
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • 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
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • 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
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams

Definitions

  • the invention relates to a plug-in pump with a cylinder and a pump housing.
  • the cylinder has a cavity in which a movable piston is received, wherein one end of the piston defines a pump chamber and the other end is connected to a drive for the piston.
  • an inlet valve is arranged in the cylinder, which connects the pump chamber with a feed for a fluid, and an outlet valve, which connects the pump chamber with an outlet.
  • the pump housing has a cavity which is divided into a first space, a second space separated from the first space, and a connecting area connecting the first space and the second space, wherein different fluids flow in both spaces.
  • the plug-in pump has a piston which is arranged in a cavity of a cylinder head and is driven on a camshaft via a roller tappet. In the cavity, the piston can be moved linearly to open an inlet for the fuel into a pump working space during a suction stroke. During a subsequent delivery stroke, the fuel is transferred from the pump working space through a pump outlet to another unit of the engine.
  • the pump piston has, at its facing away from the pump working space end to a surrounding him sealing member which, for example, camshaft seals the piston ge ⁇ genüber lubricating engine oil to prevent fuel from entering the engine oil, and vice versa.
  • the invention relates to a plug-in pump with a cylinder and a separate pump housing, wherein the cylinder has a cavity in which a movable piston is preferably received sealingly.
  • the piston can move in the cavity at least linearly, wherein the cavity forms a guide for the piston, with a shape and an inner diameter which substantially corresponds to the shape and the outer diameter of the piston.
  • a cylinder-facing first end of the piston defines a pump working space. That is, the first end, prior to commencement of a suction stroke of the piston, in a first end position, completely occludes the pumping work because prior to the commencement of the suction stroke, the first end of the piston lies within and substantially completely fills the pump working space.
  • the piston moves in a direction away from the cylinder and from the pump chamber out so that now can flow through an open inlet valve fuel in the pump chamber a ⁇ .
  • the piston is in a second end position and the pump working space has its maximum volume.
  • the fuel in the pump chamber is displaced from the pump working space by an exhaust valve.
  • the inlet and the outlet valve are arranged in the cylinder ⁇ and the inlet valve connects the pump working chamber with an inlet for a first fluid.
  • the second end of the piston is connected to a drive device for the piston, which moves the piston linearly in the cavity from the second to the first position, and vice versa.
  • the drive device may be, for example, a camshaft of an engine.
  • the pump housing of the plug-in pump has a cavity which forms at least a first space and a separate second space separate from the first space. The first space is fluidly sealed from the second space.
  • the pump housing is connected to the cylinder and preferably surrounds a part of the cylinder, in particular a cylin ⁇ derförmigen part of the cylinder, in which the cavity for the piston is at least partially formed. This part of the cylinder can protrude, for example, in the first cavity of the pump housing.
  • the housing and / or the cylinder can have a sealing element on ⁇ , which prevents the first fluid entering into the first space can escape through the joint between the cylinder and pump housing of the plug-in pump.
  • the first fluid can flow through the inlet in the pump housing, for example in an annular channel, which is formed in the pump housing.
  • the first fluid flow through just ⁇ if formed in the pump housing connecting channels in a further annular channel in the connection area between the cylinder and the pump housing is formed.
  • At least one side wall of the annular channel may be formed by an outer side of the cylinder and at least one other side wall by an Au ⁇ Hzseite of the housing.
  • the fluid can flow in supply channels, which direct the fluid to a supply space for the fluid in the region of the inlet valve for the pump working space.
  • This feed channels may be additionally connected with return channels, direct the excess fluid back to a Be ⁇ woman on top container.
  • the inlet valve is connected to an actuator that controls the opening and closing of the inlet valve, which is preferably a digital inlet valve (DIV), according to prescriptive criteria.
  • DIV digital inlet valve
  • the second end of the piston may be connected to an intermediate piece which transmits the movements of the drive unit to the piston.
  • “To be connected” can mean that they are two separate parts whose opposite end faces abut touching each other, or that the piston and the intermediate piece are integrally formed, or that the piston with the intermediate piece, for example via positive engagement and / or adhesion connected is.
  • the intermediate piece is arranged in the cavity of the pump housing and extends from the first space to the second space.
  • the intermediate piece may be, for example, a cylindrical body, n
  • the intermediate piece may have a second section which connects the first section to the third section and which projects through a connecting region formed in the cavity of the pump housing between the first space and the second space.
  • the connecting portion may have the shape of a hollow cylinder, with a preferably constant over its length inner diameter, which corresponds to an outer diameter of the cylindrical intermediate piece substantially.
  • a sealing member may be in the inner wall of the connecting portion and / or on a top ⁇ surface of the outer periphery of the second section of the intermediate ⁇ be attached piece so as to separate the first chamber in fluid from the second space.
  • the sealing element may be a simple wiper or, for example, a sealing ring.
  • a spring element can be arranged in the first space and / or in the second space of the cavity of the pump housing.
  • the one or more spring elements may be, for example, coil springs, which surround the intermediate piece, or a part of the first portion of the intermediate piece and / or a part of the third portion of the intermediate piece.
  • the one or more spring elements are tensioned by the drive device during the delivery stroke of the piston and push the intermediate piece back in the opposite direction after the end of the delivery stroke, that is, cause or assist the suction stroke of the piston when it follows the movement of the intermediate piece.
  • the spring forces of both Fe ⁇ deretti act in the same direction. This has the advantage that the individual spring element can be made smaller, which can lead to a smaller overall length and / or a smaller circumference of the pump housing.
  • the spring element in the first space may e.g. supported on an underside of the cylinder or an inner wall of the cylinder facing the end face of the cavity of the pump housing and on the piston end facing the intermediate piece.
  • the intermediate piece may comprise a spring holder, that is to say a circumferential widening which is connected to the intermediate piece, e.g. attached to the intermediate piece, or is mitge strict by the intermediate piece, on which the cylinder facing away from the end of the spring element can be supported.
  • the spring element in the second space may be supported on an underside of the connection region and secured to a spring holder, e.g. is connected to the drive device facing the end of the intermediate piece.
  • the drive device facing the end of the pump housing may form a guide bushing for a drive carriage, with a roller tappet, which is moved by a cam of a camshaft.
  • the drive slide can slide up and down in the guide bushing and thereby move the intermediate piece and tension the spring elements.
  • the spring holder for the spring element in the second space of the pump housing may be formed or connected to the end of the intermediate piece of the drive carriage facing the drive device.
  • the drive device may be a camshaft of an internal combustion engine, wherein a Cam of the camshaft preferably acts on a roller tappet and the roller tappet converts a rotational movement of the camshaft into a linear movement of the intermediate piece and the piston.
  • the first fluid is preferably a fuel for an internal combustion engine, such as gasoline or diesel or gas, in the second fluid to a lubricating oil.
  • the cylinder may be formed from a high quality steel, having a high strength
  • the pump housing for example, may be formed from cast ⁇ or sintered steel with a lower strength than that of the cylinder. This saves material and processing costs as well as weight.
  • the separate pump housing can be combined with cylinders for different combustibles in modular design, which leads to further savings and at the same time to a desired standardization of components.
  • the plug-in pump 1 shows a section through a plug-in pump 1 according to the invention.
  • the plug-in pump 1 consists of a cylinder 2 and a separate pump housing 3.
  • the cylinder 2 has a first part 2b, with a surface 2a, which faces the pump housing.
  • the first part 2b of the cylinder 2 has an inlet valve 7 on the causes opening and closing of the intake valve 7, an off ⁇ inlet valve 8 and a pump working space 6 with an actuator 9,.
  • the pump chamber 6 is part of a cavity 4.
  • the cylinder 2 also has a second part 2c, which is formed together with the first part 2b and extends the first part 2b on a side opposite the actuator 9 side.
  • the second part 2c also has the cavity 4.
  • the second part 2c has an outer circumference smaller than the outer circumference of the first part 2b and extends the first part 2b of the cylinder 2 in a central area.
  • the cavity 4 is a through hole in the second part 2c, in the first part 2b a blind bore, which opens into the pump working space 6.
  • a piston 5 is arranged, having a first end 5a, which has a shape corresponding substantially to the shape of the pump chamber 6, and a second end 5b of the end of the second part 2c of the cylinder 2 before ⁇ stands.
  • the piston 5 has an outer circumference, which essentially corresponds to the inner circumference of the cavity 4.
  • the piston 5 can move in the cavity 4 linearly in a first end position in which it completely fills the pump working chamber 6, and in a second end position in which the piston 5 is completely outside the pump working chamber 6.
  • In the second final Position forms the piston 5 and the pump working space 6 facing the end 5a, a rear wall of the pump working space. 6
  • the plug-in pump 1 further has a pump housing 3, with a cylinder facing the end face 3a.
  • the pump housing 3 has a cavity 10 which forms a first space 11, a second space 13 and a connection area 15 which connects the first space 11 to the second space 13.
  • the pump housing 3 further comprises a feed 12 for a fuel and at its end facing away from the cylinder 2, a guide bush 26 for a carriage 27, which comprises a roller tappet 28 which is linearly moved by a cam of a camshaft, not shown, in the guide bush 26
  • the second part 2c of the cylinder 2 protrudes.
  • the cylinder 2 in the region of the transition of the first part 2b in the second part 2c, a circumferential engagement member 29 and the pump housing 3 in the area of the plant
  • an intermediate piece 14 is arranged, which connects the piston 5 with the drive device or the carriage 27 with the roller tappet 28 and thus the An ⁇ driving force of the drive device to the piston 5 transmits.
  • the intermediate piece 14 has a first portion 14a, the cylinder 2 facing end face abuts against the second end 5b of the piston 5 or is positively and / or non-positively connected thereto.
  • the first section 14 a is adjoined by a second section 14 b, which forms a cavity 10 formed in the cavity 10 Extends through connection area 15.
  • the connecting region 15 is formed as a hollow cylinder, with an inner diameter that essentially corresponds to the outer diameter of the likewise cylindrical second section 14b.
  • the second section 14b has a sealing element 16 in the form of a scraper, which prevents a fluid located in the first space 11 from mixing with a fluid present in the second space 13.
  • connection ⁇ area 15 together with the second portion 14b of the intermediate piece fourteenth The second section 14b is adjoined by a third section 14c, which is arranged in the second space 13 and is connected directly or indirectly to the roller tappet 28 or the carriage 27.
  • a spring element 17 is arranged, which is supported on the pump housing 3 facing the outer side 2a of the Zy ⁇ Linders 2 and a spring holder 19 which is plugged in the embodiment shown on the piston 5 facing the end of the intermediate piece 14.
  • the spring element 17, which is a helical spring which engages around the second part 2 c of the cylinder, is compressed during a movement of the piston 5 into the pump working chamber 6, a delivery stroke of the piston 5, and can be restored after the delivery stroke has ended expand, and thereby move the piston 5 during a suction stroke and / or support.
  • the second part 2 c forms a guide for the spring element 17.
  • a spring element 18 is arranged, which is supported on an underside of the intermediate region 15 and on a Fe ⁇ derhalter 21, wherein the spring holder 21 is connected to the carriage 27 and / or the drive device facing the end of the intermediate piece 14. Also, the spring element 18 is compressed in the delivery stroke of the plug-in pump 1 and can then expand again and perform the suction stroke of the plug-in pump 1 and / or support. As shown, the intermediate portion 15 may be partially formed as projecting into the second space 13 cylindrical sleeve, which is encompassed by the spring element 18, so that the sleeve forms a guide for the spring ⁇ element 18.
  • FIG. 1 of FIG. 1 which shows by way of example a flow path of the fuel from the inlet 12, which can not be seen in this view, to the inlet valve 7.
  • From the inlet 12 of the fuel ⁇ material is passed into an annular channel formed in the pump housing 3 20 a, which extends in the pump housing 3 in the amount of the inflow 12 to the cavity 10.
  • annular channel 20 passed. From the annular channel 20 lead connecting channels 23 to supply channels 24, which conduct the fuel in a front of the inlet valve 7 fuel supply space 25.
  • the delivery channels 24 are connected to return passages that direct unused fuel back into a tank.

Landscapes

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

Abstract

L'invention concerne une pompe enfichable (1) comprenant un cylindre (2) et un carter de pompe (3), le cylindre (2) comportant une cavité (4) dans laquelle est logé un piston (5) mobile, une première extrémité (5a) du piston (5) délimitant une chambre de pompe (6) et une deuxième extrémité (5b) du piston (5) étant reliée à un dispositif d'entraînement du piston (6). Dans le cylindre (2) sont agencées une soupape d'admission (7) qui relie la chambre de pompe (6) à une entrée (12) pour un premier fluide et une soupape d'évacuation (8) qui relie la chambre de pompe (6) à une évacuation (8a), le carter de pompe (3) comportant une cavité (10) qui forme une première chambre (11) qui est reliée à l'entrée (12) pour le premier fluide et au moins une deuxième chambre (13) séparée de la première chambre (12) et reliée à un système fluidique pour un deuxième fluide, la première chambre (11) étant rendue étanche aux fluides par rapport à la deuxième chambre (13).
EP13819023.6A 2012-12-21 2013-12-19 Pompe enfichable Active EP2825773B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012224317.8A DE102012224317B4 (de) 2012-12-21 2012-12-21 Steckpumpe
PCT/EP2013/077331 WO2014096162A1 (fr) 2012-12-21 2013-12-19 Pompe enfichable

Publications (2)

Publication Number Publication Date
EP2825773A1 true EP2825773A1 (fr) 2015-01-21
EP2825773B1 EP2825773B1 (fr) 2020-06-17

Family

ID=49949635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13819023.6A Active EP2825773B1 (fr) 2012-12-21 2013-12-19 Pompe enfichable

Country Status (4)

Country Link
US (1) US9951733B2 (fr)
EP (1) EP2825773B1 (fr)
DE (1) DE102012224317B4 (fr)
WO (1) WO2014096162A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012224317B4 (de) 2012-12-21 2015-07-23 Continental Automotive Gmbh Steckpumpe
DE102016201897A1 (de) * 2016-02-09 2017-08-10 Robert Bosch Gmbh Pumpe zur Förderung eines Fluids
DE102016203543B3 (de) * 2016-03-03 2017-08-31 Continental Automotive Gmbh Pumpenkolben für eine Kolben-Kraftstoffhochdruckpumpe sowie Kolben-Kraftstoffhochdruckpumpe
DE102017114177A1 (de) * 2017-06-27 2018-12-27 L'orange Gmbh Hochdruckpumpe, insbesondere zur Kraftstoffeinspritzung in Brennkraftmaschinen
DE102019117910A1 (de) * 2019-07-03 2021-01-07 Schaeffler Technologies AG & Co. KG Rollenstößel für eine Kraftstoffhochdruckpumpe

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DE4118555A1 (de) * 1991-06-06 1992-12-10 Bosch Gmbh Robert Foerderbeginnverstelleinrichtung einer kraftstoffeinspritzpumpe
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Also Published As

Publication number Publication date
EP2825773B1 (fr) 2020-06-17
US9951733B2 (en) 2018-04-24
DE102012224317B4 (de) 2015-07-23
DE102012224317A1 (de) 2014-06-26
WO2014096162A1 (fr) 2014-06-26
US20150345447A1 (en) 2015-12-03

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