WO2020207543A1 - Pompe pour un véhicule à moteur et procédé pour fabriquer une pompe - Google Patents

Pompe pour un véhicule à moteur et procédé pour fabriquer une pompe Download PDF

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Publication number
WO2020207543A1
WO2020207543A1 PCT/DE2020/200023 DE2020200023W WO2020207543A1 WO 2020207543 A1 WO2020207543 A1 WO 2020207543A1 DE 2020200023 W DE2020200023 W DE 2020200023W WO 2020207543 A1 WO2020207543 A1 WO 2020207543A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
pump housing
groove
discharge line
area
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.)
Ceased
Application number
PCT/DE2020/200023
Other languages
German (de)
English (en)
Inventor
Max Scheller
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
Vitesco 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 Vitesco Technologies GmbH filed Critical Vitesco Technologies GmbH
Publication of WO2020207543A1 publication Critical patent/WO2020207543A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F02M59/48—Assembling; Disassembling; Replacing
    • F02M59/485—Means for fixing delivery valve casing and barrel to each other or to pump casing
    • 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
    • F04B1/0448—Sealing means, e.g. for shafts or housings
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering

Definitions

  • a pump for a motor vehicle is specified, in particular one
  • High pressure fuel pump Furthermore, a method for producing a pump for a motor vehicle is specified, in particular for producing a fuel high pressure pump.
  • a pump is used in motor vehicles, for example, in order to be able to inject fuel at high pressure into the combustion chambers of an internal combustion engine.
  • Such pumps are set up to supply the fuel with a pressure
  • the pump is attached, for example, to the internal combustion engine and is driven by it.
  • DE 91 07 284 U1 relates to a piston pump for high-pressure delivery consisting of a housing with a cylindrical interior, which is provided with seals that seal the liquid-filled interior from the surrounding atmosphere, and a piston which is oscillated back and forth by an external force , as well as an inlet and an outlet valve.
  • DE 10 2004 015 440 A1 relates to a welded connection between a
  • thick-walled component and a thin-walled component which is more resilient due to the suitable preparation of the components in the area of a joint and can be carried out in series production with minimal variation.
  • a pump for a motor vehicle is specified, which is designed to transfer a fluid from a low-pressure region to a
  • the pump is designed, for example, to deliver gasoline from a fuel tank and to apply a pressure of up to 300 bar or more, in particular of up to 500 bar or more.
  • the pump has a pump housing.
  • the pump has a connector for the high pressure area of the pump. By means of the connector it is
  • a fuel collecting line also called common rail
  • injectors it is possible to connect pipes or the like in the high pressure area to the pump.
  • the fluid is guided, for example, to a fuel collecting line (also called common rail) in order to be injected from there into combustion chambers of an internal combustion engine of the motor vehicle by means of injectors.
  • the pump has an interference fit between the connector and the pump housing.
  • the press fit is used to secure the
  • the interference fit can also be referred to as an interference fit. These are the press fit
  • the pump has a welded connection between the connector and the pump housing.
  • the welded connection is used to seal between the connector and the pump housing.
  • the welded connection is used in particular to seal against the fluid in a low pressure range of, for example, 30 bar or less.
  • the fluid in a low pressure range of, for example, 30 bar or less.
  • welded joint for sealing at pressures of 10 bar or less At the welded connection, the pump housing and the connection piece are at least materially connected to one another.
  • connection piece has a radially circumferential groove.
  • the groove is arranged axially between the interference fit and the weld joint.
  • the pump housing has a discharge to the low-pressure area. The derivation is with the groove connected to drain fluid from the groove by means of the drain in the low pressure area.
  • connection piece The interference fit between the connection piece and the pump housing enables the connection piece to be securely fastened to and in the
  • the interference fit keeps the high pressure off the weld joint.
  • the welded joint therefore only has to be stable with respect to the pressures in the low-pressure range.
  • the interference fit has a slight leak, allowing fluid to flow through the interference fit
  • the fluid is caught in the groove and guided to the low-pressure area, for example an inlet area on the damper of the pump, by means of the discharge line.
  • the welded connection seals the connection between the connection piece and the pump housing to the outside and ensures that no fluid escapes from the groove to the outside of the pump on the connection piece. There is therefore no high pressure at the weld seam.
  • the weld seam is therefore not loaded axially as well as in the shear direction.
  • Geometries and large connection diameters can be implemented. In particular, it is possible to increase the high pressure to 500 bar or more when the pump is operating.
  • High pressure area and the low pressure area is arranged.
  • the welded connection follows the press fit.
  • the residual leakage is caught in the groove and diverted into the low pressure area before the pressure in the groove adjusts to the high pressure.
  • the groove is in particular annular and runs radially completely around the connection piece.
  • the connector has a
  • the contact area on which the interference fit is formed is designed as a flat surface. A large contact area between the connector and the pump housing can thus be achieved at the press fit.
  • the contact area has notches.
  • the contact area is, for example, sawtooth-shaped. It is thus possible, for example, to reduce the press-in forces and at the same time to form a sufficiently stable press fit.
  • the contact area has one or more
  • a pressure control valve is arranged in the discharge line.
  • the pressure control valve can also be referred to as a safety pressure relief valve. If the pump malfunctions, the pressure regulating valve opens in order to avoid an overpressure greater than a specified maximum system pressure. In this case, the welded connection is made somewhat stronger in order to be able to withstand the short-term pressures of up to 50 bar. It is thus possible to save installation space.
  • the derivation is also used to arrange the pressure control valve in a space-saving manner, which is conventionally already provided at other points in pumps.
  • the pump housing surrounds a piston chamber.
  • the connection piece is arranged on the outlet side of the piston chamber.
  • An outlet valve is arranged on the connection piece.
  • the internal combustion engine is arranged downstream of the exhaust valve.
  • a method for lowering a pump for a motor vehicle is specified, in particular a method for
  • a pump housing with a recessed one Recording area is provided.
  • a fitting is provided.
  • the connection piece is pressed into the receiving area.
  • An interference fit is thereby formed between the connector and the pump housing. This attaches the connector to the pump housing.
  • connection piece is welded to the pump housing. As a result, the connection piece and the pump housing are sealed against one another.
  • connection piece is both mechanically connected and fluidically sealed to the pump by pressing in and welding.
  • connection piece The sealing between the connection piece and the pump housing is primarily realized by means of welding. Simple welding with simple geometries is therefore necessary, since only low pressure is applied to the weld seam during operation. The high pressure is due to the interference fit. During operation, the press fit acts like a throttle between a high pressure area of the pump and the welded connection which is formed by means of the welding.
  • the pump housing has a discharge.
  • the connection piece has a radially circumferential groove. The connection piece is pressed in such that the groove is arranged axially between the press fit and the welded connection. The connecting piece is pressed in such that the discharge line is connected to the groove in order to divert fluid from the groove by means of the discharge line into the low-pressure area.
  • gases are discharged through the groove and the discharge line during welding. Gases occurring during welding can thus be discharged in a controlled manner. This prevents the gases from pushing the connector out of the pump housing.
  • the groove can serve as a collecting container for welding particles which can occur during welding on a side of the welded connection facing the press fit. The sweat particles can thus be caught in a controlled manner and do not significantly affect the attachment of the connector to the pump housing.
  • Figure 1 is a schematic representation of a pump according to a
  • Figure 2 is a schematic representation of a detail of the pump according to an embodiment
  • FIG. 3 shows a schematic illustration of a contact area according to an exemplary embodiment
  • FIG. 4 shows a schematic illustration of a contact area according to an exemplary embodiment.
  • FIG. 1 shows a schematic representation of a pump 100 according to an embodiment.
  • the pump 100 is, for example, one
  • High-pressure gasoline pump for an internal combustion engine of a motor vehicle The pump 100 is designed in particular to provide pressures of 300 bar or more, in particular pressures of 500 bar or more in one
  • the pump 100 has a pump housing 101.
  • the pump housing 101 surrounds a piston chamber 104 in which a piston is displaceable in order to apply pressure to fluid (FIG. 2).
  • the pump has an inlet 120 which is connected to a low-pressure region 102 in which pressures of 20 bar or less, in particular 10 bar or less, prevail.
  • a prefeed pump is connected to the inlet 120.
  • the pump 100 has a connection piece 106.
  • the connection piece 106 is arranged on the output side of the pump 100 and in operation with the
  • High pressure area 103 fluidically connected.
  • Pressure manifold (common rail) connected to the connector 106.
  • FIG. 2 shows a schematic representation of the region of the pump 100 on the connection piece 106.
  • the connection piece 106 is a sleeve which is provided with a
  • Contact area 112 is arranged in a receiving area 118 of the pump housing 101.
  • Another area of the connection piece 106 is arranged outside the pump housing 101 and is used for coupling to further pipes or lines.
  • the receiving area 118 is connected to the piston chamber 104 in such a way that fluid can pass from the piston chamber 104 to the connection piece 106.
  • connection piece 106 is fastened to the pump housing 101 by means of a press fit 107.
  • the press fit 107 serves to hold the connection piece 106 on the pump housing 101.
  • the press fit 107 is formed on the contact area 112.
  • the contact area 112 is on one of the piston chamber 104
  • connection piece 106 facing end region of the connection piece 106 arranged.
  • a lateral surface 113 of the connection piece 106 in the contact area 112 is in contact with an inner wall 119 of the pump housing 101.
  • the inner wall 119 surrounds the receiving area 118.
  • a diameter with which the inner wall 119 surrounds the receiving area 118 is smaller than a diameter of the
  • Welded connection 108 formed.
  • the welded connection is formed in particular on an outer side of the pump housing 101.
  • the welded joint is formed in particular on an outer side of the pump housing 101.
  • connection piece 106 serves in particular to seal between the connection piece 106 and the pump housing 101 against fluid. Fluid from inside the
  • the welded connection 108 is for example as a so-called
  • a groove 109 is formed on the connection piece 106.
  • the groove 109 extends annularly radially to a longitudinal axis 1 1 1 of the connection piece 106.
  • the groove 109 is along the longitudinal axis 1 1 1 between the contact area 1 12 and the
  • Weld 108 is formed. From the outside to the inside, first the welded connection 108 is arranged along the longitudinal axis 1 1 1, then the groove 109 and then the press fit 107. Fluid from the piston chamber 104 first meets the press fit 107. Fluid that passes through the press fit 107 is in the groove 109 collected. This fluid does not pass through the weld joint 108.
  • the pump housing 101 has a discharge line 110.
  • the discharge line 110 is introduced into the pump housing 101 as a bore, for example.
  • the discharge line 1 10 is arranged in the pump housing 101 such that the discharge line 1 10 and the groove
  • the groove 109 are in direct contact with one another.
  • the groove 109 is connected to the discharge line 110 in such a way that fluid can pass from the groove 109 directly into the discharge line 110.
  • the fluid reaches the low-pressure region 102 from the discharge line 110.
  • Low-pressure area 102 Low-pressure area 102.
  • the pressure values of high-pressure area 103 are kept from groove 109 by means of press fit 107.
  • the seal by means of the welded connection 108 therefore only has to withstand the pressures of the
  • Low pressure area 102 be stable.
  • the connecting piece 106 is first pressed into the receiving area 118 in order to form the press fit 107.
  • the welded connection 108 is then formed by means of welding. Gases that arise during welding are discharged from the receiving area 118 via the groove 109 and the discharge line 110. It is thus possible to prevent the gases in the receiving area 118 from pressing the connection piece 106 out of the receiving area 118 when the welded connection 108 is sealing.
  • Welding particles which can also occur during welding, can also collect in the groove 107.
  • An outlet valve 117 is arranged on the connection piece 106. This is, for example, a digital valve which, in cooperation with the movement of the piston 105 in the piston chamber 104, enables the fluid to be subjected to high pressure.
  • the internal combustion engine is arranged downstream of the outlet valve 117.
  • a pressure control valve 116 is arranged on the connection piece 106, for example.
  • the pressure control valve 1 16 is used to protect the pump 100 and the
  • the pressure regulating valve 116 is arranged in the discharge line 110. Installation space can thus be saved.
  • the inlet side of the pressure regulating valve 116 faces the groove 109.
  • Pressure control valve 116 faces the low-pressure region 102.
  • the pressure regulating valve 116 is arranged in the discharge line 110, higher pressures of up to 50 bar can occur in the groove 109 if the fault occurs. However, these only occur occasionally and for a short time. The weld seam 108 is therefore also able to reliably seal off these somewhat higher pressures.
  • the lateral surface 1 13 is a smooth surface
  • the contact area 112 can also be formed with notches 114.
  • the notches 114 are designed, for example, as circumferential grooves. This results in a zigzag pattern in the contact area 112. Thus, the press-in forces can be reduced and nevertheless a sufficiently stable press fit 112 can be realized.
  • FIG. 4 shows a further exemplary embodiment of the contact area 112.
  • Two protruding areas 115 are formed on the contact area 112. It is also possible for more than two or fewer than two protruding areas 115 to be formed.
  • the protruding areas serve to reduce the press-in forces during the lowering position and at the same time to form a sufficiently strong press fit 107.
  • Contact area 112 is possible, for example an area designed as a flat lateral surface 113 adjacent to an area with notches 114 and / or protruding regions 115.
  • the pump 100 in which the connection piece 106 is coupled to the pump housing 101 both by means of the press fit 107 and by means of the welded connection 108, enables reliable operation even at system pressures of 500 bar or more. There is no floch pressure at the weld 108. The weld seam is therefore comparatively little stressed. Loads both axially and in the shear direction can be avoided. No complex geometries are necessary for reliable fastening of the connection piece 106 to the pump housing 108. Comparatively large diameters can also be used for the connection piece 106 and nevertheless a sufficiently stable fastening of the connection piece 106 can be realized.
  • the weld seam 108 is relieved of stress by the press and sealing connection arranged upstream.
  • the residual leakage that passes through the press fit 107 is caught in the groove 109 and diverted into the low pressure area 102 by means of the discharge line 110 in the pump housing 101 before the pressure in the groove 109 adapts to the high pressure.
  • the connection to the low pressure region 102 also serves as a drainage for the hot gases that form during welding to form the weld joint 108. This prevents the gases from pressing out the weld seam 108.
  • the discharge line 110 is connected, for example, to a drainage bore which is already conventionally provided in the pump housing 101.
  • the drainage hole is connected, for example, to the low-pressure damper of the pump 100.
  • the discharge line 110 can thus be easily integrated into the pump 101 without the need for additional long bores.
  • connection piece 106 The sealing function and the holding function for the connection piece 106 are thus divided. It is no longer necessary to combine both functions in a single weld seam. This increases the degree of freedom in design. The additional installation space that is gained in this way can be used, for example, to integrate the valves 1 16, 1 17. The requirements for the
  • Welded joints 108 can be reduced with respect to conventional pumps or higher with identical, similar welded joints 108
  • the press fit 107 enables the axial forces that act on the welded connection 108 to be reduced.
  • the press fit 107 holds the connector 106 and acts as a throttle with respect to the fluid from the
  • Connection piece 106 realized on the pump housing 101.

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)

Abstract

L'invention concerne une pompe pour un véhicule à moteur, destinée à refouler un fluide d'une zone basse pression (102) à une zone haute pression (103). La pompe présente : un carter (101) ; un élément de raccordement (106) pour la zone haute pression (103) de la pompe (100) ; un ajustement avec serrage (107) entre l'élément de raccordement (106) et le carter (101) de pompe pour fixer l'élément de raccordement (106) sur le carter (101) de pompe ; une liaison soudée (108) entre l'élément de raccordement (106) et le carter (101) de pompe pour assurer une étanchéité entre l'élément de raccordement (106) et le carter (101) de pompe, l'élément de raccordement (106) présentant une rainure (109) radialement périphérique, qui est disposée axialement entre l'ajustement avec serrage (107) et la liaison soudée (108), et le carter (101) de pompe présentant une dérivation (110) par rapport à la zone basse pression (102), laquelle dérivation est accouplée à la rainure (109) pour la communication fluidique.
PCT/DE2020/200023 2019-04-08 2020-04-02 Pompe pour un véhicule à moteur et procédé pour fabriquer une pompe Ceased WO2020207543A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019204995.8 2019-04-08
DE102019204995.8A DE102019204995B4 (de) 2019-04-08 2019-04-08 Pumpe für ein Kraftfahrzeug und Verfahren zum Herstellen einer Pumpe

Publications (1)

Publication Number Publication Date
WO2020207543A1 true WO2020207543A1 (fr) 2020-10-15

Family

ID=70464802

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2020/200023 Ceased WO2020207543A1 (fr) 2019-04-08 2020-04-02 Pompe pour un véhicule à moteur et procédé pour fabriquer une pompe

Country Status (2)

Country Link
DE (1) DE102019204995B4 (fr)
WO (1) WO2020207543A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9107284U1 (de) 1991-06-13 1991-08-29 BEB Erdgas und Erdöl GmbH, 3000 Hannover Kolbenpumpe
DE102004015440A1 (de) 2004-03-30 2005-10-20 Bosch Gmbh Robert Schweißverbindung zwischen einem dickwandigen Bauteil und einem dünnwandigem Bauteil sowie Kraftstoffhochdruckpumpe für eine Brennkraftmaschine
DE102005007806A1 (de) * 2004-12-28 2006-07-06 Robert Bosch Gmbh Kolbenpumpe, insbesondere Hochdruck-Kraftstoffpumpe für eine Brennkraftmaschine eines Kraftfahrzeugs
EP2341237A1 (fr) * 2008-10-30 2011-07-06 Hitachi Automotive Systems, Ltd. Pompe pour délivrer un carburant haute pression
WO2014207520A1 (fr) * 2013-06-27 2014-12-31 Toyota Jidosha Kabushiki Kaisha Pompe à carburant haute pression
DE112016004267T5 (de) * 2015-10-23 2018-05-30 Hitachi Automotive Systems, Ltd. Hochdruck-Kraftstoffversorgungspumpe, Herstellungsverfahren dafür und Verfahren zum Verbinden zweier Elemente

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9107284U1 (de) 1991-06-13 1991-08-29 BEB Erdgas und Erdöl GmbH, 3000 Hannover Kolbenpumpe
DE102004015440A1 (de) 2004-03-30 2005-10-20 Bosch Gmbh Robert Schweißverbindung zwischen einem dickwandigen Bauteil und einem dünnwandigem Bauteil sowie Kraftstoffhochdruckpumpe für eine Brennkraftmaschine
DE102005007806A1 (de) * 2004-12-28 2006-07-06 Robert Bosch Gmbh Kolbenpumpe, insbesondere Hochdruck-Kraftstoffpumpe für eine Brennkraftmaschine eines Kraftfahrzeugs
EP2341237A1 (fr) * 2008-10-30 2011-07-06 Hitachi Automotive Systems, Ltd. Pompe pour délivrer un carburant haute pression
WO2014207520A1 (fr) * 2013-06-27 2014-12-31 Toyota Jidosha Kabushiki Kaisha Pompe à carburant haute pression
DE112016004267T5 (de) * 2015-10-23 2018-05-30 Hitachi Automotive Systems, Ltd. Hochdruck-Kraftstoffversorgungspumpe, Herstellungsverfahren dafür und Verfahren zum Verbinden zweier Elemente

Also Published As

Publication number Publication date
DE102019204995B4 (de) 2024-03-07
DE102019204995A1 (de) 2020-11-12

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