EP2956667B1 - Baugruppe umfassend pumpelement und befestigungsflansch - Google Patents

Baugruppe umfassend pumpelement und befestigungsflansch Download PDF

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Publication number
EP2956667B1
EP2956667B1 EP13815776.3A EP13815776A EP2956667B1 EP 2956667 B1 EP2956667 B1 EP 2956667B1 EP 13815776 A EP13815776 A EP 13815776A EP 2956667 B1 EP2956667 B1 EP 2956667B1
Authority
EP
European Patent Office
Prior art keywords
housing
pump element
shoulder
assembly according
pumping element
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
EP13815776.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2956667A1 (de
Inventor
Waldemar Kiel
Hrvoje Lalic
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 EP2956667A1 publication Critical patent/EP2956667A1/de
Application granted granted Critical
Publication of EP2956667B1 publication Critical patent/EP2956667B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • 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
    • 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
    • F04B1/0404—Details or component parts
    • F04B1/0421—Cylinders
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • 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

Definitions

  • the invention is based on an assembly comprising a pumping element and a mounting flange for installation in a housing according to the preamble of patent claim 1 and also of a housing for such an assembly.
  • a mounting flange is required to permanently connect such a pumping element to the housing.
  • the outer body of the pumping element and the associated mounting flange is made in one piece as a forged part.
  • the disadvantage here is that the subsequently required for the corresponding forging forming rework, for example by machining, is associated with relatively high production costs.
  • the assembly with the characterizing features of claim 1 has the advantage that, in contrast to the prior art, in which the outer body of the pumping element and the mounting flange are designed integrated, by the present invention separately from each other making the pumping element and the associated mounting flange of the outer body of Pumping element cost reducing as a rotating part of rod material with low Zerspannvolumen can be manufactured and the fastening of the pumping element by means of the separately formed from the outer body of the pumping element and mounted on the pumping element mounting flange.
  • the mounting flange can be manufactured from a cost-effective and from a suitable for the mechanical stress occurring during operation of the mounting flange material.
  • the mounting flange In order to receive the pumping element in the mounting flange, the mounting flange has a central passage opening, which encloses a head region of the pumping element in the assembled state of the module.
  • the mounting flange has at least two mutually symmetrically with respect to the central passage opening opposite retaining tabs for fastening means on the housing.
  • the invention provides that on the outer body of the pumping element a circumferential shoulder on the outer circumference is formed, which is larger in diameter than the head portion and the head portion bounded axially downwards.
  • the shoulder of the pumping element provides a bearing surface for the mounting flange mounted in the intended position on the pumping element.
  • the central passage opening of the fastening flange is of circular design.
  • An embodiment of the invention may consist in that the shoulder of the pumping element when installed in a housing cooperates with a shoulder of the housing. In the intended installation position of the module, the shoulder of the pumping element rests on the shoulder formed in the mouth region of the housing.
  • the pumping element comprises a spring, which acts on the one hand on a formed in the lower region of the pumping element paragraph and on the other hand is provided for support on a stop within the opening of the housing.
  • the axial force generated by the spring acts upwards and presses the pumping element against the mounting flange.
  • An embodiment of the invention is that the mounting flange rests flat on the shoulder of the pumping element. As a result, the mounting flange acts as a rigid element, which fixes the pumping element in the axial direction.
  • the curvature between the central axis of the pumping element and the location of attachment of the mounting flange is formed on the housing.
  • the biasing force can thus be adjusted in this embodiment, depending on the pressure generated by the pumping element during operation, and indeed via the bending of the mounting flange. Due to the bending of the mounting flange, a relatively simple assembly of the assembly is made possible. In addition, the mounting flange exerts as a spring element or bending element from a downward axial force, so that the mounting flange presses against the shoulder of the pumping element. Advantageously, component tolerances in the axial direction can thereby be compensated. According to an expedient development of the mounting flange is formed of strip material, wherein individual lamellae of the strip material are stacked one above the other.
  • each retaining tab has at least one through hole for receiving a respective associated fastener.
  • the fastening means are designed as screws and anchored in corresponding holes in an outer side of the housing.
  • the shoulder and the heel each carry a radially encircling sealing ring. Structural tolerances can be compensated thereby, so that the pumping element is received tightly in the housing opening.
  • Fig. 1 shows in a longitudinal sectional view of an assembly according to the invention designated in its entirety by 10, which comprises a pumping element 11 and a pumping element receiving mounting flange 12.
  • This shows the left half of Fig. 1 a first embodiment of the mounting flange 12 which is flat in profile and thus rests flat on the outside of a housing 22, while the right-side half of Fig. 1 shows a second embodiment of the mounting flange 12, which is curved or arched in profile.
  • the assembly 10 is suitable for installation in a housing. In the intended assembled state of the assembly 10 surrounds in both embodiments of the mounting flange 12 with a centrally formed through hole 50, the head portion 21 of the pumping element 11, which is shown in the figures essentially on the basis of its outer body.
  • the passage opening 50 of the mounting flange 12 is circular, wherein the diameter thereof corresponds approximately to the diameter of the cylindrical head portion 21 of the pumping element 11.
  • the mounting flange 12 has two symmetrically with respect to the longitudinal central axis 24 oppositely arranged retaining tabs 37 with two through holes 23 which are arranged symmetrically to the longitudinal center axis 24 opposite each other and each receive a screw 25 therein with which the mounting flange 12 can be anchored in two blind holes 26 which are formed corresponding to the arrangement of the through holes 23 on the abutment side 27 of the housing 22.
  • the Pumping element 11 is accommodated in a housing opening 28 of the housing 22.
  • the pumping element 11 By means of a sealing ring 31 received on the outer circumference of a shoulder 30 of the pumping element 11, the pumping element 11 is supported in the mouth region of the housing opening 28 and by means of a second sealing ring 32 axially spaced therefrom, the pumping element 11 is supported with its lower region in the housing opening 28.
  • the first embodiment according to the left-side representation of Fig.1 is characterized in that the mounting flange 12 has a planar profile and thus the mounting flange rests flat on the shoulder 30 of the pumping element 11, wherein the through-hole encloses the smaller-diameter head portion 21 axially extending away from the shoulder 30.
  • the pump element 11 in the intended installation position of the assembly 10, the pump element 11 sunk so far into the opening of the housing 22, that in this embodiment, the head portion 21 facing top of the shoulder 30 is aligned with the contact side 27 of the housing 22.
  • a spring 34 is provided in the lower region of the pumping element 11, which on the one hand on - not shown in the figure - bottom or a shoulder of the housing opening and on the other hand on a second sealing ring supporting shoulder 35 and thereby generates an axially upward vertical force acting, with which the shoulder 30 of the pumping element 11 is placed in abutment against the underside of the mounting flange 12.
  • the mounting flange 12 is anchored by means of engaging in the blind holes 26 of the housing 22 screws 25 on the contact side 27 of the housing, that the bottom of the mounting flange is flush with the contact side 27.
  • the vertical force generated by the spring 34 prevents axial displacement of the pumping element downwardly within the housing opening.
  • the second embodiment according to the right side representation of Fig. 1 is characterized in that the mounting flange 12 has a curvature or a curved profile which extends symmetrically to the longitudinal central axis 24 of the assembly 10.
  • the profile is substantially curved like a trough, wherein the central region rests centrally on the shoulder 30 of the pumping element 11, while the off-center region is upwardly arched and thereby protrudes axially away from the shoulder 30 and the abutment side 27 and is spaced.
  • the shoulder 30 of the pumping element 11 Due to the curved profile and this inherent spring force, it is possible by adjusting the screws 25 overcoming the spring force to produce a correspondingly variable deflection of the curved flange profile, whereby an adjustable and axially downward biasing force between the mounting flange 12, the shoulder 30 of the Pumping element 11 and the housing 22 is generated.
  • the shoulder 30 of the pumping element 11 according to the second embodiment has a larger diameter than that of the first embodiment and the mouth area of the housing opening is larger than the axially lower area
  • the underside of the shoulder 30, which according to the second embodiment is formed as a diameter broadening 33 is on the thus formed in the vicinity of the mouth paragraph 38 in the housing opening.
  • the first sealing ring 31 is in the shoulder 30 sealingly on the inner circumference of the housing opening in the region of the mouth above the shoulder 38 at.
  • the in the lower part of the pumping element 11 at the formed there paragraph 35 with its one end acting spring 34 which at its other end in the opening of the housing to a wall portion such as a floor or a paragraph or at a deeper in the housing opening mounted and coupled to the pumping element component such as a shaft supports, generates an axial vertical force upwards, which presses the shoulder 30 of the pumping element 11 against the underside of the mounting flange 12 in the center of the shoulder 30 adjacent central portion.
  • the mounting flange is designed in this embodiment as a bending element or bending beam, axial component tolerances are compensated.
  • the mounting flange 12 is preferably formed from strip material and may be formed of lamellar superimposed individual elements, which are each formed from the strip material, wherein the individual elements can be inexpensively designed as stampings.
  • Fig. 2 shows a cross section through the pumping element 11 according to the first embodiment, wherein a key surface 40 is provided on the head portion of the pumping element 11, which serves to define an angular position of the pumping element 11.
  • Fig. 3 illustrates in a plan view of the built-in housing 22 assembly 10 according to the second embodiment.
  • the head portion 21 of the pumping element 11 protrudes from the central through hole 50 of the mounting flange 12 and the retaining tabs 37 by cross-screws 25 fix the mounting flange 12 to the housing 22.
  • the mounting flange 12 with the symmetrically opposed retaining tabs 37th an oval or elliptical shape.
  • the invention provides for the pumping element 11 and the fastening flange 12 of the assembly 10 to be designed separately from one another.
  • the mounting flange 12 has a central passage opening 50, which encloses a head portion 21 of the pumping element 11 in the assembled state of the assembly 10 and further at least two mutually symmetrically with respect to the central passage opening retaining tabs 37 for fastening means on the housing 22.
  • the pumping element 11 has a spring 34, which engages on the one hand at a lower portion of the pumping element 11 formed shoulder 35 and on the other hand is provided for support to a stop within the opening of the housing 22.
  • the pumping element 11 is received and anchored either in an opening of the housing 22 by means of a planar and thus rigid or by means of a curved and thus elastically formed profile of the mounting flange 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP13815776.3A 2013-02-18 2013-12-27 Baugruppe umfassend pumpelement und befestigungsflansch Active EP2956667B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310202569 DE102013202569A1 (de) 2013-02-18 2013-02-18 Baugruppe umfassend Pumpelement und Befestigungsflansch
PCT/EP2013/078046 WO2014124720A1 (de) 2013-02-18 2013-12-27 Baugruppe umfassend pumpelement und befestigungsflansch

Publications (2)

Publication Number Publication Date
EP2956667A1 EP2956667A1 (de) 2015-12-23
EP2956667B1 true EP2956667B1 (de) 2019-02-27

Family

ID=49917095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13815776.3A Active EP2956667B1 (de) 2013-02-18 2013-12-27 Baugruppe umfassend pumpelement und befestigungsflansch

Country Status (4)

Country Link
EP (1) EP2956667B1 (zh)
CN (1) CN104995404B (zh)
DE (1) DE102013202569A1 (zh)
WO (1) WO2014124720A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206459B3 (de) * 2016-04-18 2017-10-05 Continental Automotive Gmbh Kombination, umfassend ein Gehäuse und einen Flansch, und Anordnung
DE102016217409A1 (de) * 2016-09-13 2018-03-15 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
EP3578801B1 (en) * 2018-06-06 2021-11-10 Delphi Technologies IP Limited Fuel pump assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975776A (en) * 1958-03-20 1961-03-21 Cav Ltd Liquid fuel pumps of rinternal combustion engines
US3759637A (en) * 1971-12-16 1973-09-18 Sigma Injection pumps
JPS597266U (ja) * 1982-07-06 1984-01-18 株式会社ボッシュオートモーティブ　システム 燃料噴射ポンプ
JP5039507B2 (ja) * 2007-10-31 2012-10-03 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およびその製造方法
DE102008042626A1 (de) * 2008-05-29 2009-12-03 Robert Bosch Gmbh Hochdruck-Kraftstoffpumpe
CN102116308B (zh) * 2011-04-13 2012-08-29 襄樊五二五泵业有限公司 一种泵用可调式机械密封结构

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN104995404A (zh) 2015-10-21
CN104995404B (zh) 2017-08-01
EP2956667A1 (de) 2015-12-23
WO2014124720A1 (de) 2014-08-21
DE102013202569A1 (de) 2014-08-21

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