EP1834090B1 - 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 Download PDF

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Publication number
EP1834090B1
EP1834090B1 EP05821583.1A EP05821583A EP1834090B1 EP 1834090 B1 EP1834090 B1 EP 1834090B1 EP 05821583 A EP05821583 A EP 05821583A EP 1834090 B1 EP1834090 B1 EP 1834090B1
Authority
EP
European Patent Office
Prior art keywords
holding body
piston pump
contact surface
pump
fastening flange
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.)
Expired - Lifetime
Application number
EP05821583.1A
Other languages
German (de)
English (en)
Other versions
EP1834090A1 (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
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

  • 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 out of the DE 103 22 599 A1 in the form of a single-cylinder piston pump, which can be fixed by means of a mounting flange to 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 designed as a bulge, so that an increased rigidity in the connection region is achieved.
  • 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.
  • a piston pump carries in FIG. 1 Overall, the reference numeral 10. It is used as a high-pressure fuel pump in an internal combustion engine of a motor vehicle, the latter are not shown in the figure.
  • the piston pump 10 has a pump housing 12, which in an in FIG. 1 lower portion 14 has a circular outer contour. In this lower region 14, a centering portion 16 is formed, which in a receiving opening 18 (see FIG. 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 FIGS. 3 and 4 ), in which a circular opening 26 is present, the edge region of which is formed as a welding section 28, which is shown in FIG. FIG. 2 ) is welded to 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. Below, therefore, for the sake of simplicity, only in the FIGS. 2 to 4 left wing portion 34a will be described in detail.
  • the wing portion 34 a has a circular contour in plan view bulge 36 is impressed. In this concentric with the outer contour, a through hole 37 is present. At the top of the bulge 36 is supported via an integrally formed collar 38 (or optionally with the interposition of a washer) from 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 passed through the through hole 37 and bolted in the cylinder head 20. Since the screw 42, which forms a connecting element to the cylinder head 20, supported on the bulge 36 and acts on this, the bulge 36 is also referred to as a connection region. By the configuration of the connection region as a bulge 36 has this in the in FIG. 2 shown installation position relative to the cylinder head 20 a distance D.
  • contact area 46 The lying outside of the bulge 36 areas of the mounting flange 22 may, with the exception of the welding section 28, be referred to as contact area 46, since these rest in the installed position at least partially on the cylinder head 20, so contact this.
  • the contact region 46 has a total of two dotted filled contact surfaces 48 and 50 and a base surface 52 which are provided on the side facing in the installed position to the cylinder head 20 of the contact portion 46 of the mounting flange 20.
  • 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.
  • FIG. 5 As can be seen, are the contact surfaces 48 and 50 and the base surface 52 seen in the direction of a longitudinal axis 54 before mounting the mounting flange 22 on the cylinder head 20, so before tightening the screw (s) 42, in different planes.
  • a reference plane 56 is defined by the base surface 52.
  • a plane 58, in which the first contact surface 48 is located, has a larger section D 48 from the reference plane 56 to the cylinder head 20 than a plane 60 in which the contact surface 50 lies and which only has a distance D 50 from the reference plane 56 ,
  • 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 portion 28 is compared to the immediately adjacent to him first contact surface 48 seen from the cylinder head 20 from something set back. As a result, damage to the first contact surface 48 is prevented during the production of the weld seam 30.
  • FIG. 6 an alternative embodiment of a mounting flange 22 is shown.
  • 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.
  • fastening flange 22 has at the radially projecting edge of the wing portions (in FIG. 6 is again only the wing portion 34 a shown) in the region of the second contact surface 50 a sharp and in the installed position in the direction of the cylinder head 20 projecting edge, 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 be made in the second contact surface 50 by conical impressions 64.
  • conical impressions 64 By a corresponding arrangement of these conical impressions 64, a waffle-iron-like configuration of the second contact surface 50 can be produced.
  • the contact surface 48 may be interrupted in the region of the bulge 36 by a portion 66 which is set back relative to the first plane 58, for example in the reference plane 56 or in the second plane 60 is located.
  • the portion 66 extends in the present embodiment over an angular range of 20 ° on both sides of a central axis 68 of the wing portions 34a and 34b (the central axis 68 extends through the centers of the two bulges 36 and the screw (s) 42). It is also conceivable, however, an extent of 10 ° on both sides of this central axis 68 up to 45 ° on both sides of the central axis 68th

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

Claims (11)

  1. Pompe à piston (10), en particulier pompe à carburant haute pression pour un moteur à combustion interne d'un véhicule automobile, avec un carter de pompe (12) et une bride de fixation (22) qui est fixée et soudée sur le carter de pompe (12) et qui présente au moins une zone de raccordement (36) sur laquelle, dans la position montée, agit un élément de raccordement (42) par le biais duquel la pompe à piston (10) peut être fixée sur un corps de retenue (20), la zone de raccordement (36) étant, dans la position montée, à distance du corps de retenue (20), caractérisée en ce que la zone de raccordement est constituée en tant qu'indentation (36) dans ou sur une zone de contact (46) qui, dans la position montée, est au moins par tronçons adjacente au corps de retenue (20) .
  2. Pompe à piston (10) selon la revendication 1, caractérisée en ce que la zone de raccordement est estampée en tant qu'indentation (36) dans ou sur une zone de contact (46) qui, dans la position montée, est au moins par tronçons adjacente au corps de retenue (20) .
  3. Pompe à piston (10) selon l'une des revendications 1 et 2, caractérisée en ce qu'une zone de contact (46) présente au moins deux surfaces de contact (48, 50) dirigées vers le corps de retenue (20) qui, après le montage sur le corps de retenue (20), sont adjacentes au moins par tronçons à ce dernier et qui, au moins avant le montage, sont situées dans des plans (58, 60) qui ont des distances (D48, D50) différentes par rapport à un plan de référence (56) commun de telle sorte que, lors du montage, la bride de fixation (22) est serrée sur le corps de retenue (20) et/ou s'enfonce dans le corps de retenue (20).
  4. Pompe à piston (10) selon la revendication 3, caractérisée en ce que la zone de contact (46) comprend une première surface de contact (48) voisine du carter de pompe (12) et de préférence concentrique à celui-ci, une deuxième surface de contact (50) disposée derrière la zone de raccordement (36) vu à partir du carter de pompe (12), et une surface de base (52), la surface de base (52) étant située dans le plan de référence (56) et, avant le montage, le plan (58) de la première surface de contact (48) présentant, vu en direction du corps de retenue (20), une distance (D48) au plan de référence (56) plus grande que le plan (60) de la deuxième surface de contact (50).
  5. Pompe à piston selon la revendication 4, caractérisée en ce que, à proximité de la zone de raccordement (36), la première surface de contact (48) est interrompue par un tronçon (66) qui est situé dans un plan (56) en retrait par rapport au plan (58) de la première surface de contact (48), et en ce que le tronçon (66) s'étend de préférence sur une plage angulaire d'environ 20° à environ 90°.
  6. Pompe à piston (10) selon l'une des revendications précédentes, caractérisée en ce que, sur au moins une surface de contact (50), il y a au moins une arête d'accrochage (62), en particulier une pluralité d'arêtes d'accrochage (62) qui se croisent ou qui ont une forme de gaufrier.
  7. Pompe à piston (10) selon la revendication 6, caractérisée en ce qu'au moins une arête d'accrochage (62) est formée sur un bord de la bride de fixation (22) par une arête, en particulier une arête estampée, qui, dans la position montée, fait saillie vers le corps de retenue (20).
  8. Pompe à piston (10) selon l'une des revendications précédentes, caractérisée en ce que, en direction du carter de pompe (12), la bride de fixation (22) présente un tronçon soudé (28), réalisé en particulier par estampage, qui présente une épaisseur plus faible que la bride de fixation (22) restante, et en ce qu'un cordon de soudure (30) est soudé entre le tronçon soudé (28) et le carter de pompe (12).
  9. Pompe à piston (10) selon la revendication 8, caractérisée en ce que le tronçon soudé (28) est en retrait par rapport à une surface de contact (48) voisine et dirigée vers le corps de retenue (20).
  10. Pompe à piston (10) selon l'une des revendications précédentes, caractérisée en ce que la bride de fixation (22) est réalisée en tôle métallique, de préférence en tôle d'acier fin, par découpage et formage à froid, en particulier estampage.
  11. Pompe à piston (10) selon l'une des revendications précédentes, caractérisée en ce que la bride de fixation (22) est disposée à l'extérieur autour du carter de pompe (12) et présente au moins deux tronçons d'ailette (34a, 34b) qui dépassent, dans lesquels il y a respectivement une zone de raccordement (36).
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 Expired - Lifetime 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 EP1834090A1 (fr) 2007-09-19
EP1834090B1 true EP1834090B1 (fr) 2018-09-12

Family

ID=35929717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05821583.1A Expired - Lifetime 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)

Cited By (1)

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KR20230036743A (ko) * 2021-09-08 2023-03-15 주식회사 현대케피코 다중 면 접촉식 고압펌프 마운팅 장치

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DE102016206456B4 (de) * 2016-04-18 2017-11-09 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
DE102016206470B3 (de) * 2016-04-18 2017-10-05 Continental Automotive Gmbh Kombination, umfassend ein Gehäuse und einen Flansch, und Anordnung
DE102016213451A1 (de) 2016-05-19 2017-11-23 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
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
DE102018216583A1 (de) * 2018-09-27 2020-04-02 Continental Automotive Gmbh Verfahren zum Herstellen einer Pumpenanordnung für eine Brennkraftmaschine und Pumpenanordnung
DE102018216582A1 (de) * 2018-09-27 2020-04-02 Continental Automotive Gmbh Pumpenanordnung für eine Brennkraftmaschine
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
GB2631716A (en) * 2023-07-10 2025-01-15 Perkins Engines Co Ltd Retainer plate for retaining a pump body within a pump housing

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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

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
KR20230036743A (ko) * 2021-09-08 2023-03-15 주식회사 현대케피코 다중 면 접촉식 고압펌프 마운팅 장치
KR102604769B1 (ko) 2021-09-08 2023-11-21 주식회사 현대케피코 다중 면 접촉식 고압펌프 마운팅 장치

Also Published As

Publication number Publication date
EP1834090A1 (fr) 2007-09-19
ES2701345T3 (es) 2019-02-21
WO2006069913A1 (fr) 2006-07-06
DE102005007806A1 (de) 2006-07-06

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