EP1834090A1 - Pompe a piston, en particulier pompe a carburant haute pression pour un moteur a combustion interne d'un vehicule automobile - Google Patents

Pompe a piston, en particulier pompe a carburant haute pression pour un moteur a combustion interne d'un vehicule automobile

Info

Publication number
EP1834090A1
EP1834090A1 EP05821583A EP05821583A EP1834090A1 EP 1834090 A1 EP1834090 A1 EP 1834090A1 EP 05821583 A EP05821583 A EP 05821583A EP 05821583 A EP05821583 A EP 05821583A EP 1834090 A1 EP1834090 A1 EP 1834090A1
Authority
EP
European Patent Office
Prior art keywords
piston pump
holding body
pump
mounting flange
contact surface
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
EP05821583A
Other languages
German (de)
English (en)
Other versions
EP1834090B1 (fr
Inventor
Heinz Siegel
Markus Schaumann
Siamend Flo
Andreas Altmann
Ruthard Bonn
Bruno Holzwarth
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 EP1834090A1 publication Critical patent/EP1834090A1/fr
Application granted granted Critical
Publication of EP1834090B1 publication Critical patent/EP1834090B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof
    • 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
    • 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
    • F02M59/025—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

Definitions

  • Piston pump in particular high-pressure fuel pump for a Brcnnkraftmaschinc a motor vehicle
  • the invention relates to a piston pump, in particular a high-pressure fuel pump for an internal combustion engine of a motor vehicle, according to the preamble of claim 1.
  • Such a piston pump is known from DE 103 22 599 A1 in the form of a single-cylinder piston pump, which can be fastened by means of a mounting flange on a cylinder head of an internal combustion engine.
  • the mounting flange is welded to a pump housing of the piston pump and is fully installed in the installation position on the cylinder head.
  • Object of the present invention is to provide a piston pump of the type mentioned in such a way that it can be securely attached over a long time, for example, to a cylinder head, builds small, is lightweight, and has low production costs.
  • the inventively provided distance between the connecting portion and the holding body allows the realization of an increased strain length of the connecting element.
  • a screw or a bolt is used as a connecting element, is prevented by this measure, that the connecting element through Setting operations relaxes. In this way, a good connection of the piston pump can be ensured with the holding body over a long period.
  • connection region is formed as a bulge, an increased rigidity in the connection region is already achieved by the shaping.
  • contact surfaces lead during assembly to a tension of the mounting flange by this applies to the holding body at least partially and thereby deformed. This leads to an additional clamping force on the connecting element.
  • the arranged in different levels contact surfaces also form in the holding body slightly, resulting in increased friction between the mounting flange of the piston pump and the holding body. This prevents the piston pump from being moved by transverse accelerations, thereby loosening the connection of the connecting element.
  • Verkrallkanten provided according to the invention can increase the friction between mounting flange and holding body again, which also reduces the strength requirements of the connecting element.
  • a welded-through weld ensures a good weld between the mounting flange and the pump housing, which has a high dynamic strength.
  • the flange in the region of the weld can be reduced to weld depth, for example by embossing in the wall thickness. The basic rigidity of the mounting flange is still preserved.
  • Figure 1 is a perspective view of a piston pump with a mounting flange
  • Figure 2 is a section through the mounting flange and a pump housing of the piston pump of Figure 1;
  • Figure 3 is a bottom view of the mounting flange of Figure 1;
  • Figure 4 is a section along the line IV-IV of Figure 3;
  • Figure 5 is a detail V of Figure 4.
  • Figure 6 is a view similar to Figure 5 of an alternative embodiment
  • Figure 7 is a view similar to Figure 5 of yet another alternative embodiment
  • FIG. 8 shows a detail VIII from FIG. 7
  • Figure 9 is a view similar to Figure 3 of an alternative embodiment of a mounting flange.
  • a piston pump in FIG. 1 has the overall reference numeral 10. It is used as a high-pressure
  • Fuel pump used in an internal combustion engine of a motor vehicle are not shown in the figure. - A -
  • the piston pump 10 has a pump housing 12, which has a circular outer contour in a lower region 14 in FIG. In this lower region 14, a centering portion 16 is formed, which in a Aufiiahmeö réelle 18 (see Figure 2) of a holding body, which in the present case is designed as a cylinder head 20 shown only schematically, can be introduced.
  • a mounting flange 22 is welded to this.
  • This has a central portion 24 (see Figures 3 and 4), in which a circular opening 26 is present, the edge region is formed as a welded portion 28 which is welded in Figure 30 ( Figure 2) with the pump housing 12.
  • the weld 30 is welded through. The production of such a weld 30 is facilitated by an immediately above the weld 30 on the pump housing 12 existing circumferential recess 32, which can be prepared for example by a puncture.
  • the mounting flange 22 is made as a sheet metal part made of stainless steel by stamping and cold forming. He has almost everywhere on a substantially equal thickness or sheet thickness. Only in the welding section 28, the thickness of the mounting flange 22 is significantly reduced.
  • wing portions 34a and 34b are formed, which are identical to each other.
  • left wing portion 34a in Figs. 2 to 4 will be described in detail.
  • a bulge 36 having a circular contour in plan view is embossed in the wing section 34a.
  • a through hole 37 is present.
  • a screw head 40 of a commercially available screw 42 for example, an M6 screw of strength class 8.8 from.
  • a threaded portion 44 of the screw 42 is through the
  • the lying outside of the bulge 36 areas of the mounting flange 22 may, with the exception of the welding portion 28, be referred to as the contact area 46, since these in
  • the contact region 46 has a total of two contact surfaces 48 and 50 shown in dotted form and a base surface 52 which are provided on the side of the contact region 46 of the fastening flange 20 facing the cylinder head 20 in the installed position.
  • the first contact surface 48 extends concentrically around the opening 26 in the central portion 24 of the mounting flange 22, the pump housing 12 immediately adjacent. In that regard, in this embodiment, at least a portion of the first contact surface 48 between the connecting portion forming a recess 36 and the pump housing 12 is arranged.
  • the second contact surface 50 is located at the outer edge of the wing portion 34a, so seen from the pump housing 12 from behind the bulge 36, and it has in plan view, the contour in about half a circular ring.
  • the base surface 52 lies in the region of the attachment flange 22 which is outside the first two contact surfaces 48 and 50 and outside the bulge 36 and the welding section 28.
  • the contact surfaces 48 and 50 and the base surface 52 lie in the direction of a longitudinal axis 54 before assembly of the fastening flange 22 on the cylinder head 20, ie before tightening the screw (s) 42, in different planes.
  • a reference plane 56 is defined by the base surface 52.
  • Contact surface 48 is located, seen from the reference plane 56 to the cylinder head 20 out a larger portion D 48 than a plane 60 in which the contact surface 50 is located and of the reference plane 56 has only a distance D 50 .
  • the mounting flange 22 deforms (this is not shown in the drawing), so that in addition to the first contact surface 48 and the second contact surface 50 comes into contact with the cylinder head 20 , At The contact surfaces 48 and 50 thus results in an increased surface pressure, which may even lead to a corresponding clamping force by the screw 42 that the first contact surface 48 and the second contact surface 50 at least partially einformen or dig into the cylinder head 20. As a result, a displacement of the mounting flange 22 in a direction transverse to the longitudinal axis 54 is effectively prevented during operation of the piston pump 10 and the internal combustion engine.
  • the surface pressure is particularly high in the region of the first contact surface 48 immediately adjacent to the bulge 36, since this first comes into contact with the cylinder head 20 during screwing.
  • the welding section 28 is set back slightly in relation to the first contact surface 48, which is directly adjacent to it, from the cylinder head 20. As a result, damage to the first contact surface 48 is prevented during the production of the weld seam 30.
  • FIG. 6 shows an alternative embodiment of a fastening flange 22.
  • those elements and regions which have equivalent functions to previously described elements and regions carry the same reference numerals. They are not explained again in detail.
  • the mounting flange 22 shown in Figure 6 has at the radially projecting edge of the
  • Wing sections (in FIG. 6 again only the wing section 34a is shown) have a sharp edge in the region of the second contact surface 50 and projecting in the installed position in the direction of the cylinder head 20, which forms a verkrallkante 62.
  • the frictional engagement between the mounting flange 22 and the cylinder head 20 is increased again and a displacement transverse to the longitudinal axis 54 again better prevented.
  • corresponding verkrallkanten 62 can also be produced in the second contact surface 50 by conical indentations 64.
  • conical indentations 64 By a corresponding arrangement of these conical impressions 64, a waffle-iron-like configuration of the second contact surface 50 can be produced.
  • a further embodiment of the attachment flange is shown in FIG. 9. Thereafter, the contact surface 48 in the region of the bulge 36 can be interrupted by a section 66 which is set back relative to the first plane 58, for example in the reference plane 56 or in the second plane 60 , As a result, two separate sections 48a and 48b of the first contact surface 48 are formed.
  • the section 66 extends in the present

Landscapes

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

Abstract

L'invention concerne une pompe à carburant haute pression (10) pour un moteur à combustion interne d'un véhicule automobile, comportant un carter de pompe (12) et une bride de fixation (22). Cette dernière est fixée au carter de pompe (12) et présente au moins une zone d'assemblage (36), avec laquelle un élément d'assemblage (42) est en prise, en position de montage. La pompe à piston (10) peut être fixée à un corps de maintien (20) au moyen dudit élément d'assemblage. Selon la présente invention, la zone d'assemblage (36) se situe à une certaine distance du corps de maintien (20), en position de montage.
EP05821583.1A 2004-12-28 2005-12-13 Pompe a piston, en particulier pompe a carburant haute pression pour un moteur a combustion interne d'un vehicule automobile Active EP1834090B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004063073 2004-12-28
DE102005007806A DE102005007806A1 (de) 2004-12-28 2005-02-21 Kolbenpumpe, insbesondere Hochdruck-Kraftstoffpumpe für eine Brennkraftmaschine eines Kraftfahrzeugs
PCT/EP2005/056734 WO2006069913A1 (fr) 2004-12-28 2005-12-13 Pompe a piston, en particulier pompe a carburant haute pression pour un moteur a combustion interne d'un vehicule automobile

Publications (2)

Publication Number Publication Date
EP1834090A1 true EP1834090A1 (fr) 2007-09-19
EP1834090B1 EP1834090B1 (fr) 2018-09-12

Family

ID=35929717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05821583.1A Active EP1834090B1 (fr) 2004-12-28 2005-12-13 Pompe a piston, en particulier pompe a carburant haute pression pour un moteur a combustion interne d'un vehicule automobile

Country Status (4)

Country Link
EP (1) EP1834090B1 (fr)
DE (1) DE102005007806A1 (fr)
ES (1) ES2701345T3 (fr)
WO (1) WO2006069913A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206456B4 (de) * 2016-04-18 2017-11-09 Continental Automotive Gmbh Kombination, umfassend ein Gehäuse und einen Flansch, und Anordnung
DE102016206470B3 (de) * 2016-04-18 2017-10-05 Continental Automotive Gmbh Kombination, umfassend ein Gehäuse und einen Flansch, und Anordnung
DE102016206459B3 (de) * 2016-04-18 2017-10-05 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
DE102016212468A1 (de) 2016-07-08 2018-01-11 Robert Bosch Gmbh Hochdruck-Kraftstoffpumpe für ein Kraftstoff-Einspritzsystem einer Brennkraftmaschine
DE102016213333A1 (de) 2016-07-21 2018-01-25 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
DE102017207207A1 (de) 2017-04-28 2018-10-31 Robert Bosch Gmbh Kraftstoffpumpe
DE102017210313A1 (de) 2017-06-20 2018-12-20 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
DE102018209264A1 (de) 2018-06-11 2019-12-12 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
DE102018211690A1 (de) 2018-07-13 2020-01-16 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
DE102018216582A1 (de) * 2018-09-27 2020-04-02 Continental Automotive Gmbh Pumpenanordnung für eine Brennkraftmaschine
DE102018216583A1 (de) * 2018-09-27 2020-04-02 Continental Automotive Gmbh Verfahren zum Herstellen einer Pumpenanordnung für eine Brennkraftmaschine und Pumpenanordnung
DE102018221702A1 (de) 2018-12-13 2020-06-18 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
DE102019204995B4 (de) * 2019-04-08 2024-03-07 Vitesco Technologies GmbH Pumpe für ein Kraftfahrzeug und Verfahren zum Herstellen einer Pumpe
KR102604769B1 (ko) * 2021-09-08 2023-11-21 주식회사 현대케피코 다중 면 접촉식 고압펌프 마운팅 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS191051B1 (en) * 1975-03-27 1979-06-29 Jaromir Indra Injection unit of the injection pump for the combustion engines
IT1226115B (it) * 1988-12-13 1990-12-11 O M A P Officine Meccaniche Al Pompa di iniezione ad alta pressione principalmente per motori diesel
DE10134066A1 (de) * 2001-07-13 2003-02-06 Bosch Gmbh Robert Kraftstoffpumpe, insbesondere Hochdruck-Kraftstoffpumpe für ein Kraftstoffsystem einer Brennkraftmaschine mit Benzin-Direkteinspritzung
DE10322599B4 (de) * 2003-05-20 2013-08-08 Robert Bosch Gmbh Kolbenpumpe, insbesondere Hochdruck-Kraftstoffpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006069913A1 *

Also Published As

Publication number Publication date
DE102005007806A1 (de) 2006-07-06
WO2006069913A1 (fr) 2006-07-06
EP1834090B1 (fr) 2018-09-12
ES2701345T3 (es) 2019-02-21

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