WO2009115355A2 - Pompe à carburant - Google Patents

Pompe à carburant Download PDF

Info

Publication number
WO2009115355A2
WO2009115355A2 PCT/EP2009/050685 EP2009050685W WO2009115355A2 WO 2009115355 A2 WO2009115355 A2 WO 2009115355A2 EP 2009050685 W EP2009050685 W EP 2009050685W WO 2009115355 A2 WO2009115355 A2 WO 2009115355A2
Authority
WO
WIPO (PCT)
Prior art keywords
housing part
fuel pump
pump according
gear
housing
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/EP2009/050685
Other languages
German (de)
English (en)
Other versions
WO2009115355A3 (fr
Inventor
Johann Warga
Friedrich Boecking
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
Priority to EP09723140.1A priority Critical patent/EP2252795B1/fr
Publication of WO2009115355A2 publication Critical patent/WO2009115355A2/fr
Publication of WO2009115355A3 publication Critical patent/WO2009115355A3/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material

Definitions

  • the invention relates to a fuel pump, in particular an external gear pump for fuel injection systems. Specifically, the invention relates to the field of fuel injection systems of air compressing, self-igniting internal combustion engines.
  • the known from DE 197 36 160 Al pump assembly has the disadvantage that the manufacture and assembly of the pump housing is expensive. It is conceivable that the pump housing is formed of aluminum, which must be braced and additionally sealed. A seal of the pump housing is conceivable, for example, by a compaction of the pores in the casting by an adhesive. However, such concepts are complex and lead to increased costs in the manufacture and assembly of a known pump assembly.
  • the housing part formed from the deep-drawn sheet metal is preferably not or only selectively reworked.
  • the housing part may be a selective post-processing of the housing part in the region of a bearing bolt advantageous, which is formed by deep drawing, wherein the gear is mounted on the selectively reworked bearing pin.
  • a trained by deep drawing bearing pin receives a bearing sleeve on which the gear is mounted.
  • the bearing sleeve can be pressed in an advantageous manner on the bearing pin, with a further post-processing of the bearing pin is not required.
  • a bearing pin is provided which is connected by welding, in particular friction welding, with the housing part, wherein a gear is mounted on the bearing pin.
  • This has the advantage of a certain flexibility in the arrangement of the bearing pin.
  • a toothed wheel it is also possible for a toothed wheel to be accommodated on a bearing pin designed by deep drawing, while another toothed wheel is mounted on the bearing pin.
  • a fastening of another component, in particular for receiving a coupling is also possible in a corresponding manner.
  • the gear wheel which is mounted at least indirectly on the receptacle, on a front side, which faces the housing part, designed rounded.
  • the configured by deep drawing housing part may have a certain radius in the region of the gear, wherein the rounded gear is adjusted accordingly. This allows a further simplification of the production and a stable configuration of the housing part.
  • At least one sealing ring is provided between the housing part and a further housing part or the like, which is inserted into a formed by deep drawing bead of the housing part.
  • the bead can be designed so that it additionally stiffened the housing.
  • the deep-drawn sheet metal is formed from a steel sheet which is coated with a coating.
  • a coating may for example consist of nickel.
  • Fig. 1 is a side view of a fuel pump according to a first
  • FIG. 2 shows a partial section through the fuel pump of the first exemplary embodiment shown in FIG. 1 along the section line designated by II;
  • FIG. 2 shows a partial section through the fuel pump of the first exemplary embodiment shown in FIG. 1 along the section line designated by II;
  • Fig. 3 in Fig. 2 designated III section corresponding to a second
  • FIG. 6 shows the section of a fuel pump according to a fifth exemplary embodiment of the invention, indicated by VI in FIG. 2;
  • FIG. 6 shows the section of a fuel pump according to a fifth exemplary embodiment of the invention, indicated by VI in FIG. 2;
  • FIG. 7 shows the detail of a fuel pump according to a sixth embodiment of the invention shown in FIG. 3;
  • Fig. 8 shows the detail shown in Fig. 6 corresponding to a seventh
  • Fig. 9 shows the section shown in Fig. 2 by a housing part of a
  • the fuel pump 1 has a gear 7 and a further gear 8, which are arranged within the housing 2 and whose position is illustrated with respect to the housing part 3 of the housing 2 in FIG. 1 by broken lines.
  • the gears 7, 8 are engaged, so that an operative connection between them, to form a gear pump.
  • the fuel pump 1 of the first embodiment is described below in further detail with reference to FIG. 2.
  • FIG. 2 shows a partial section through the fuel pump 1 shown in FIG. 1 along the section line designated by II.
  • the housing part 3 of the housing 2 is formed from a deep-drawn sheet metal, which may be coated with a coating of nickel or the like.
  • a receptacle 10 and a further receptacle 11 are formed on the housing part 3.
  • the gear 7 is mounted on the receptacle 10.
  • the further gear 8 is mounted on the receptacle 11.
  • the receptacle 10 is selectively refinished on a bearing surface 12, while the further receptacle 11 is selectively refinished on a bearing surface 13.
  • the housing part 3 in the area of the bearing surfaces 12, 13 of the receptacles 10, 11 selectively refinished.
  • the housing part 3 is preferably not further refinished, so that a cost-effective production is possible.
  • the housing part 3 has punched fixing holes 14, 15, which serve for fastening the housing part 3 to the further housing part 4.
  • the fixing hole 15 is reinforced by means of an eye 16 in the illustrated embodiment.
  • the eye 16 is connected to an outer side 17 of the housing part 3 by welding to the housing part 3. Further, on the housing part 3 by deep drawing dents 18, 18 'are formed, which serve as Zulaufnuten.
  • the deep-drawn housing part 3, the gears 7, 8 in the area of the receptacles 10, 11 at least substantially.
  • the gears 7, 8 may protrude into the further housing part 4 via an inner side 19 of the housing part 3.
  • the receptacles 10, 11 may also be formed on the inside 19 also. Further, it is possible that the receptacles 10, 11 are reset, as illustrated in FIG. 9.
  • the gears 7, 8 are in an engaging portion 20 with each other. Further openings, in particular bores, for example the bore 6, can be configured by stamping, cutting or the like in the housing part 3.
  • the receptacles 10, 11 designed as a bearing pin.
  • the design can be achieved at least essentially by deep drawing.
  • the bearing pin that is, the receptacles 10, 11, to the bearing surfaces 12, 13, an advantageous storage of the gears 7, 8 can be achieved.
  • the receptacles 10, 11, which are designed as bearing pins also serve for the indirect storage of the gears 7, 8, as described with reference to FIG. 6 in further detail.
  • Fig. 3 shows the designated in Fig. 2 with III section of a fuel pump 1 according to a second embodiment of the invention.
  • the punched fixing hole 14 is reinforced with a sleeve-shaped eye 16 ', which is fixed, for example by welding on the outside 17 of the housing part 3.
  • the housing part 3 of the housing 2 is surrounded by a Kunststoffvergussmasse 25, which may also extend over the further housing part 4, so that the housing 2 is at least substantially cast in plastic.
  • Fig. 4 shows the designated in Fig. 2 with IV section of a fuel pump 1 according to a third embodiment of the invention.
  • the gear 8 is configured rounded on an end face 26 which faces the housing part 3.
  • a radius 27 is predetermined for the gear 8, so that in contrast to the embodiment shown in FIG. 3, a significant edge rounding of the gear 8 is.
  • This has the advantage that the housing part 3 in the embodiment of the receptacle 11 in a region 28 with a certain radius 29 can be thermoformed. This is the production of the housing part 3 simplified.
  • the radius 29 is predetermined by the radius 27 of the gear 8.
  • a corresponding embodiment can also be specified for the receptacle 10 and the gear 7.
  • Fig. 6 shows the detail in Fig. 2 denoted by VI section of a fuel pump 1 according to a fifth embodiment of the invention.
  • the further receptacle 11 is not refinished. It is pressed onto the receptacle 11, a bearing sleeve 38, on which the gear 8 is mounted.
  • Fig. 7 shows the detail shown in Fig. 3 of a fuel pump 1 according to a sixth embodiment of the invention.
  • the housing part 3 is stiffened with at least one stiffening rib 39.
  • the stiffening rib 39 can be connected to the housing part 2 at a plurality of points 40, of which only the point 40 is marked in FIG. 7 for the purpose of simplifying the illustration.
  • the stiffening ribs 39 are preferably designed and arranged so that the forces acting on the housing part 3 during operation of the fuel pump 1, in particular by the gears 7, 8, are absorbed.
  • Fig. 8 shows the detail shown in Fig. 6 of a fuel pump 1 according to a seventh embodiment of the invention. While, for example, in FIG. 2, the receptacles 10, 11 are designed as bearing pins 10, 11, in the embodiment shown in FIG. 8, at least the receptacle 11 is formed by a bearing pin 41, on which the gear 8 is mounted.
  • the bearing pin 41 can by friction welding be connected to the housing part 3.
  • Fig. 9 shows the section shown in Fig. 2 by a housing part 3 of a fuel pump 1 according to an eighth embodiment of the invention.
  • the receptacle 11 is configured shortened, so that it is set back from the inside 19 of the housing part 3.
  • the further receptacle 11 is thus configured as a shortened bearing pin.
  • the receptacle 11 serve to receive a coupling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne une pompe à carburant (1) réalisée de préférence sous la forme d'une pompe à engrenages extérieurs pour des systèmes d'injection de carburant de moteurs à combustion interne à autoallumage par compression. La pompe à carburant (1) comprend un élément de corps (3), au niveau duquel sont placées des roues dentées (7, 8). L'élément (3) du corps est réalisé à partir d'une tôle métallique emboutie profond, des évidements (10, 11), sur lesquels les roues dentées (7, 8) sont montées, étant ménagés sur ledit élément (3).
PCT/EP2009/050685 2008-03-17 2009-01-22 Pompe à carburant Ceased WO2009115355A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09723140.1A EP2252795B1 (fr) 2008-03-17 2009-01-22 Pompe à carburant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810000701 DE102008000701A1 (de) 2008-03-17 2008-03-17 Brennstoffpumpe
DE102008000701.3 2008-03-17

Publications (2)

Publication Number Publication Date
WO2009115355A2 true WO2009115355A2 (fr) 2009-09-24
WO2009115355A3 WO2009115355A3 (fr) 2009-11-19

Family

ID=40977248

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/050685 Ceased WO2009115355A2 (fr) 2008-03-17 2009-01-22 Pompe à carburant

Country Status (3)

Country Link
EP (1) EP2252795B1 (fr)
DE (1) DE102008000701A1 (fr)
WO (1) WO2009115355A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1022681B1 (nl) * 2015-01-14 2016-07-14 Atlas Copco Airpower N.V. Behuizing voor een compressor- of expanderinstallatie, vacuümpomp, generator of dergelijke
DE102016225883A1 (de) * 2016-12-21 2018-06-21 Robert Bosch Gmbh Zahnradpumpe für ein Abwärmerückgewinnungssystem
DE102017203004A1 (de) * 2017-02-24 2018-08-30 Robert Bosch Gmbh Zahnradpumpe für ein Abwärmerückgewinnungssystem
DE102023105779A1 (de) * 2023-03-08 2024-09-12 Valeo Embrayages Zahnradpumpe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759426A (en) * 1955-11-17 1956-08-21 Tuxco Corp Rotary pump
US4366779A (en) * 1978-01-16 1983-01-04 Knecht John E Wind driven heating system
EP0159968A3 (fr) * 1984-04-24 1987-05-13 CORINT S.r.l. Pompe pneumatique à palettes avec carter en tôle métallique estampée
DE19736160A1 (de) 1997-08-20 1999-02-25 Bosch Gmbh Robert Pumpenanordnung zur Kraftstoffhochdruckversorgung bei Kraftstoffeinspritzsystemen von Brennkraftmaschinen
DE10341841A1 (de) * 2003-09-09 2005-04-07 Siemens Ag Nach dem Gerotorprinzip arbeitende Kraftstoffpumpe
US7220111B2 (en) * 2004-08-02 2007-05-22 Production Research, Llc Hydraulic pump
US20070098586A1 (en) * 2005-10-28 2007-05-03 Autotronic Controls Corporation Fuel pump

Also Published As

Publication number Publication date
DE102008000701A1 (de) 2009-09-24
WO2009115355A3 (fr) 2009-11-19
EP2252795B1 (fr) 2016-07-13
EP2252795A2 (fr) 2010-11-24

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