EP2971747B1 - Pompe haute pression, en particulier pompe enfichable, pour système d'injection de carburant d'un moteur à combustion interne - Google Patents

Pompe haute pression, en particulier pompe enfichable, pour système d'injection de carburant d'un moteur à combustion interne Download PDF

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Publication number
EP2971747B1
EP2971747B1 EP14701157.1A EP14701157A EP2971747B1 EP 2971747 B1 EP2971747 B1 EP 2971747B1 EP 14701157 A EP14701157 A EP 14701157A EP 2971747 B1 EP2971747 B1 EP 2971747B1
Authority
EP
European Patent Office
Prior art keywords
flange
pressure pump
housing
flange parts
pump
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.)
Active
Application number
EP14701157.1A
Other languages
German (de)
English (en)
Other versions
EP2971747A1 (fr
Inventor
Siamend Flo
Stefan PFUHL
Tamim Latif
Peter ANDRETZKY
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 EP2971747A1 publication Critical patent/EP2971747A1/fr
Application granted granted Critical
Publication of EP2971747B1 publication Critical patent/EP2971747B1/fr
Active legal-status Critical Current
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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
    • F02M59/44—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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—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
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws

Definitions

  • the invention relates to a high-pressure pump according to the preamble of claim 1, and a flange according to the independent claims.
  • the problem underlying the invention is solved by a high-pressure pump according to claim 1.
  • Advantageous developments are specified in subclaims.
  • the invention has the advantage that a flange on a housing of a high-pressure fuel pump ("high-pressure pump") by means of caulking form fit or non-positively by means of press-fitting instead of each cohesively.
  • a welded connection between the flange and the housing is not required.
  • the elimination of welding eliminates the introduction of thermal energy and a resulting structural change in a material of the welding partners. As a result, unwanted deformations of the flange or of the housing as a result of microstructural changes are simultaneously reduced.
  • a sequence of assembly steps in the manufacture of the high-pressure pump can be made more flexible, which can result in manufacturing simplifications and cost savings.
  • inventive caulking or press-fitting of flange on the housing of the high pressure pump a dirt entry is avoided, as is possible, for example, in a welding operation as a result of welding spatter and smoke.
  • the flange can be made inexpensively and with relatively little mass of another material instead of stainless steel.
  • the at least two-part flange according to the invention with respect to a one-piece design has the advantage that in the production of the flange parts by means of punching a comparatively low material waste can be achieved.
  • each of the flange parts has only one, for example, a semicircular recess.
  • an optimal arrangement of a flange contour on a strip of material during punching is possible.
  • no additional connecting elements for the arrangement of the flange on the housing of the high pressure pump are required.
  • Such fasteners would be pins, for example.
  • a required positioning accuracy between the flange and the housing of the high-pressure pump is comparatively low, since no holes for pressing in said pins must be aligned. Likewise, additional holes can be omitted on the housing for pressing in the pins.
  • One Another advantage is that the flange can be applied before caulking with the housing with clearance, which may be tolerances compensated component tolerances.
  • the invention relates to a high-pressure pump, in particular plug-in pump, for a fuel system for an internal combustion engine, wherein the high-pressure pump comprises a housing and a flange arranged rigidly on the housing.
  • the flange has at least two parts, the high-pressure pump having a groove-like receiving region ("groove"), in which a radially inward region of the flange parts is accommodated.
  • the flange parts are held on the housing by a caulking connection and / or a press connection.
  • a welded joint for the arrangement of the flange on the housing is unnecessary, which eliminates the specific disadvantages.
  • the flange parts have recesses which are arranged on the flange parts in such a way that the recesses of the flange parts are partially covered by the groove in their installed position, wherein a material of the housing is caulked in the recesses. This creates space for the material changes made by the caulking in a simple and cost-effective way.
  • the recesses are designed as circular holes. Circular holes can be produced in a particularly simple and cost-effective manner during the course of a stamping process, as a result of which the production of the high-pressure pump can be made cheaper.
  • the radially inward regions of the flange parts have sections which have a greater material thickness and / or a different type of embossing than regions lying laterally thereof.
  • the flange parts are pressed into the groove.
  • the press-fit forces can be greatly reduced, since the contact surface between the flange on the one hand and the housing on the other hand reduced or even minimized and also the flange parts in the region of said sections are much more elastic.
  • the housing of the high-pressure pump is generally designed for sufficient corrosion protection for contact with ethanol-containing fuel made of stainless steel. Because a connection between the flange and the housing according to the invention does not require a welded connection, therefore, the flange can be advantageously made of a different material to the housing.
  • the housing and the flange are made of different stainless steels.
  • a cheaper stainless steel can be used for the flange, whereby material costs can be reduced accordingly. It is not absolutely necessary that the stainless steel has the property of weldability.
  • the flange is provided that it is made of aluminum or an aluminum compound or steel.
  • the stainless steel for the material of the flange part are described, whereby the production of the high pressure pump can be simplified and costs can be reduced. This is possible in particular because the flange is not connected to the housing by means of a welded connection.
  • the flange part is produced by stamping and / or embossing.
  • Previously known embodiments of flanges are generally made in one piece and therefore have at their center a circular hole which serves to connect the flange to the housing of the high-pressure pump.
  • each flange part has only one example semi-circular recess on.
  • FIGS. 1A and 1B show a designed as a plug-pump high-pressure pump 10 for a fuel system for a (not shown) internal combustion engine in a first and second view.
  • a "lower" side of the high pressure pump 10 which in a mounted state of the high pressure pump 10 of a mounting structure 12 (see FIG. 1B ) facing the internal combustion engine.
  • the high-pressure pump 10 has a housing 14 and in the present case two identical flange parts 16a and 16b.
  • the two flange portions 16a and 16b together form a rigidly arranged on the housing 14 flange 16 of the high-pressure pump 10.
  • the high pressure pump 10 has a groove-like receiving area 18 ("groove") (see FIG. 1B ).
  • Groove groove-like receiving area 18
  • the flange portions 16a and 16b each have two recesses 20, which are designed here as circular holes.
  • the recesses 20 are arranged on the flange parts 16a and 16b such that the recesses 20 of the flange parts 16a and 16b are partially covered by the groove in their installation position. In this case, a material of the housing 14 is caulked in the recesses 20 ("clamping connection").
  • the flange parts 16a and 16b of Figures 1A and 1B are similar to each other, and that mirror-symmetrical to one in the Figures 1A and 1B not shown vertical center line.
  • the flange parts 16a and 16b are produced here by means of stamping and embossing.
  • An in the Figures 1A and 1B Left and right areas, the flange portions 16a and 16b on edge portions 22 which are lifted by means of a stamping operation of other areas of the flange 16a and 16b, and thus allow a three-dimensional geometry of the flange 16a and 16b.
  • the flange portions 16a and 16b are stiffened by the edge portions 22, resulting in greater strength.
  • each of the flange parts 16a and 16b has a circular attachment hole 24.
  • the fastening holes 24 By means of the fastening holes 24, the flange parts 16a and 16b, and thus the high-pressure pump 10, can be screwed to the mounting structure 12.
  • the fastening holes 24 By means of the fastening holes 24, the flange parts 16a and 16b, and thus the high-pressure pump 10, can be screwed to the mounting structure 12.
  • screws are in the Figure 1A and the FIG. 1B but not shown.
  • FIG. 1B shows the arrangement of the high-pressure pump 10 after the Figure 1A in a partial sectional view tilted by 90 °.
  • the groove-like receiving region 18 is arranged radially circumferentially on a radially outer region of the housing 14.
  • the housing 14 of the high-pressure pump 10 is shown only in a region of the flange parts 16a and 16b.
  • the embodiment of the high-pressure pump 10 corresponds to the Figures 1A and 1B
  • conventional embodiments of high-pressure fuel pumps which are designed as piston pumps, in particular as plug-in pumps.
  • An assembly of the flange parts 16a and 16b on the housing 14 takes place for example by means of the following steps: In a first step, the two flange parts 16a and 16b are applied to the groove-like receiving area 18 in a defined position. In a second step, a material of the housing 14 is caulked by Kreisverstemmitch in the space provided for recesses 20. Preferably, at least two recesses 20 per flange 16a and 16b used to prevent a radial displacement and / or a tangential rotation of the flange portions 16a and 16b relative to the housing 14. In this case, the recesses 20 only a partial overlap with the groove-like receiving area 18.
  • the groove-like receiving portion 18 can be made with a comparatively small radial depth, whereby a required for the production of the housing 14 machining is facilitated.
  • the Figures 1A and 1B describe a substantially positive connection between the housing 14 and the flange 16a and 16b.
  • FIGS. 2A and 2B show one to the Figures 1A and 1B Alternative embodiment of the flange parts 16a and 16b and the high-pressure pump 10.
  • the flange part 16b is shown in a perspective view.
  • the flange portion 16b has in a radially inward region present three sections 26, which have a greater material thickness or a different type of embossing as lying laterally of their areas.
  • the two flange parts 16a and 16b are also in the FIGS. 2A and 2B similarly executed.
  • the two flange portions 16a and 16b in the radially encircling groove-like receiving portion 18 is pressed ("press connection"). Accordingly, in each case at least three radially inward areas, by means of which the flange parts 16a and 16b are held on the housing 14.
  • a welded connection for fastening the flange parts 16a and 16b to the housing 14 is in the FIGS. 2A and 2B and also in the Figures 1A and 1B not mandatory.
  • sections 26, deviating from the example of FIGS. 2A and 2B in almost any number, arrangement and shape can be arranged on the flange 16a and 16b.
  • elements comparable to the sections 26 in a region of the groove-like receiving region 18 of the housing 14 instead of the flange parts 16a and 16b. This is in the FIGS. 2A and 2B but not shown.
  • the housing 14 of the high-pressure pump 10 is made of a comparatively high-grade stainless steel, which makes it possible for the high-pressure pump 10 to be operated without corrosion with an ethanol-containing fuel.
  • the two flange parts 16a and 16b are made of a different and relatively inexpensive stainless steel.
  • the flange 16a and 16b are also produced by punching and / or embossing.
  • the assembly of the flange 16a and 16b on the housing 14 is carried out for the embodiment of the high pressure pump 10 after the FIGS. 2A and 2B by pressing in, in particular with the participation of the above-described Sections 26.
  • For this required pressing forces are comparatively low, because a sum of contact surfaces (pressing zones) between the flange 16a and 16b and the sections 26 and the housing 14 of the high pressure pump 10 is also relatively small.
  • the flange parts 16a and 16b are structurally relatively elastic in the region of the sections 26. By such a reduction of the press-fit forces, elaborate post-processing, for example by means of grinding, may possibly be dispensable.
  • the FIGS. 2A and 2B describe a substantially frictional connection between the housing 14 and the flange portions 16a and 16b, respectively.
  • FIG. 3 shows a section of a schematically illustrated material strip 28 for the production of flange parts 16a and 16b arranged therein finished stamped and stamped flange parts 16a and 16b. From the material strip 28 flange portions 16a and 16b can be continuously produced by punching and embossing. In the present case, two flange parts 16a and 16b are shown completely.
  • the flange parts 16a and 16b are arranged continuously on the material strip 28, the arrangement being particularly optimal.
  • the edge portions 22 of a respective flange portion 16a and 16b can be arranged comparatively closely adjacent to a semicircular recess 30 of a flange portion 16b or 16a disposed adjacent to the material band 28.
  • a particularly small material waste is made possible, whereby manufacturing costs of the flange parts 16a and 16b and the high-pressure pump 10 can be reduced.

Claims (7)

  1. Pompe (10) à haute pression, en particulier pompe enfichable pour système de carburant d'un moteur à combustion interne, la pompe (10) à haute pression comportant un boîtier (14) et une bride (16) disposée sur le boîtier (14),
    la bride (16) étant réalisée en au moins deux parties,
    la pompe (10) à haute pression présentant une partie de réception (18) en forme de rainure dans laquelle une partie radialement intérieure des parties (16a, 16b) de la bride sont reprises,
    caractérisée en ce que
    les parties (16a, 16b) de la bride sont maintenues rigidement sur le boîtier (14) par une liaison matée et/ou une liaison sous pression.
  2. Pompe (10) à haute pression selon la revendication 1, caractérisée en ce que les parties (16a, 16b) de la bride présentent des découpes (20) qui sont disposées sur les parties (16a, 16b) de la bride de telle sorte qu'en position de montage, les découpes (20) des parties (16a, 16b) de la bride soient recouvertes axialement par la rainure (18), et en ce qu'un matériau du boîtier (14) est maté dans les découpes (20).
  3. Pompe (10) à haute pression selon la revendication 2, caractérisée en ce que les découpes (20) sont réalisées sous la forme de trous circulaires.
  4. Pompe (10) à haute pression selon la revendication 1, caractérisée en ce que les parties radialement intérieures des parties (16a, 16b) de la bride présentent des sections (26) de plus grande épaisseur et/ou dont le est gaufrage est différent de celui de leurs parties situées latéralement, les parties (16a, 16b) de la bride étant enfoncées dans la rainure (18) au moyen de ces sections (26).
  5. Pompe (10) à haute pression selon l'une des revendications précédentes, caractérisée en ce que le boîtier (14) et la bride (16) sont réalisés en des aciers alliés différents.
  6. Pompe à haute pression selon l'une des revendications précédentes, caractérisée en ce qu'au moins l'une des parties (16a, 16b) de la bride est réalisée en aluminium, en un alliage d'aluminium ou en acier.
  7. Pompe à haute pression selon l'une des revendications précédentes, caractérisée en ce qu'au moins l'une des parties (16a, 16b) de la bride est réalisée par estampage et/ou frappe.
EP14701157.1A 2013-03-15 2014-01-14 Pompe haute pression, en particulier pompe enfichable, pour système d'injection de carburant d'un moteur à combustion interne Active EP2971747B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013204549.2A DE102013204549A1 (de) 2013-03-15 2013-03-15 Hochdruckpumpe, insbesondere Steckpumpe, für ein Kraftstoffsystem für eine Brennkraftmaschine
PCT/EP2014/050527 WO2014139697A1 (fr) 2013-03-15 2014-01-14 Pompe haute pression, en particulier pompe enfichable, pour système d'injection de carburant d'un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2971747A1 EP2971747A1 (fr) 2016-01-20
EP2971747B1 true EP2971747B1 (fr) 2017-07-05

Family

ID=50000965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14701157.1A Active EP2971747B1 (fr) 2013-03-15 2014-01-14 Pompe haute pression, en particulier pompe enfichable, pour système d'injection de carburant d'un moteur à combustion interne

Country Status (8)

Country Link
US (1) US20160032879A1 (fr)
EP (1) EP2971747B1 (fr)
JP (2) JP2016509161A (fr)
KR (1) KR20150123260A (fr)
CN (1) CN105143661A (fr)
DE (1) DE102013204549A1 (fr)
ES (1) ES2643312T3 (fr)
WO (1) WO2014139697A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013220600A1 (de) * 2013-10-11 2015-04-16 Continental Automotive Gmbh Steckpumpe für ein Common-Rail-System und Motoranordnung mit einem Verbrennungsmotor, einem Common-Rail-System und einer Steckpumpe
DE102015210805A1 (de) * 2015-06-12 2016-09-08 Continental Automotive Gmbh Verfahren zum Herstellen eines Pumpengehäuses für eine Kraftstoffhochdruckpumpe sowie Pumpengehäuse für eine Kraftstoffhochdruckpumpe.
DE102015210795B4 (de) 2015-06-12 2024-01-04 Vitesco Technologies GmbH Kraftstoffhochdruckpumpe
DE102016200905B4 (de) * 2016-01-22 2017-08-31 Continental Automotive Gmbh Kraftstoffhochdruckpumpe
DE102016206459B3 (de) * 2016-04-18 2017-10-05 Continental Automotive Gmbh Kombination, umfassend ein Gehäuse und einen Flansch, und Anordnung
DE102016206456B4 (de) * 2016-04-18 2017-11-09 Continental Automotive Gmbh Kombination, umfassend ein Gehäuse und einen Flansch, und Anordnung
DE102016213470A1 (de) * 2016-05-19 2017-11-23 Robert Bosch Gmbh Hochdruck-Kraftstoffpumpe für ein Kraftstoff-Einspritzsystem einer Brennkraftmaschine
DE102017208160A1 (de) * 2017-05-15 2018-11-15 Man Diesel & Turbo Se Dual-Fuel-Motor und Verfahren zum Betreiben desselben
DE102018216582A1 (de) * 2018-09-27 2020-04-02 Continental Automotive Gmbh Pumpenanordnung für eine Brennkraftmaschine
DE102019214751A1 (de) * 2019-09-26 2021-04-01 Mahle International Gmbh Gehäuse
CN115398090B (zh) * 2020-04-14 2023-10-20 日立安斯泰莫株式会社 高压燃料供给泵和制造方法

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ATE148203T1 (de) * 1992-04-14 1997-02-15 Ebara Corp Seitenströmungspumpe
JP2585151Y2 (ja) * 1992-06-05 1998-11-11 日産ディーゼル工業株式会社 内燃機関の燃料噴射装置
DE10310124B4 (de) * 2003-03-07 2009-09-10 Continental Automotive Gmbh Flachdichtung
JP5478051B2 (ja) * 2008-10-30 2014-04-23 日立オートモティブシステムズ株式会社 高圧燃料供給ポンプ
JP5408010B2 (ja) * 2010-04-08 2014-02-05 株式会社デンソー 高圧ポンプ
CA2825913C (fr) * 2011-02-07 2019-01-15 James E. Bohn Ensemble prise de force et pompe hydraulique combinees

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
JP2017223233A (ja) 2017-12-21
ES2643312T3 (es) 2017-11-22
JP6516801B2 (ja) 2019-05-22
WO2014139697A1 (fr) 2014-09-18
JP2016509161A (ja) 2016-03-24
EP2971747A1 (fr) 2016-01-20
CN105143661A (zh) 2015-12-09
KR20150123260A (ko) 2015-11-03
US20160032879A1 (en) 2016-02-04
DE102013204549A1 (de) 2014-09-18

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