US20040101416A1 - Pump fluid pipe for an ejector pump and two methods for producing said pump fluid pipe - Google Patents

Pump fluid pipe for an ejector pump and two methods for producing said pump fluid pipe Download PDF

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Publication number
US20040101416A1
US20040101416A1 US10/466,639 US46663904A US2004101416A1 US 20040101416 A1 US20040101416 A1 US 20040101416A1 US 46663904 A US46663904 A US 46663904A US 2004101416 A1 US2004101416 A1 US 2004101416A1
Authority
US
United States
Prior art keywords
fuel line
mold
nozzle
fuel
piece
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.)
Abandoned
Application number
US10/466,639
Other languages
English (en)
Inventor
Karl Eck
Dieter Keller
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KELLER, DIETER, ECK, KARL
Publication of US20040101416A1 publication Critical patent/US20040101416A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
    • B29C45/1711—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles and removing excess material from the mould cavity by the introduced fluid, e.g. to an overflow cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
    • B29C2045/1724—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles hollows used as conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4242—Means for deforming the parison prior to the blowing operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/004—Bent tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans

Definitions

  • the invention relates to a fuel line for a suction jet pump having a connection piece for connection of a connection line which leads onward, having a nozzle, which is intended to be mounted upstream of a mixer tube of the suction jet pump, and having a bend piece for connecting the connection piece to the nozzle.
  • the invention also relates to an advantageous process for producing the fuel line from a plastic material, in which molten plastic is introduced into a mold provided for this purpose.
  • the invention relates to a process for producing the fuel line from plastics, in which a blank which is in the form of a flexible tube is inflated in a mold.
  • Fuel lines of this type are often used to convey fuel within fuel tanks of modern motor vehicles and are known in practice.
  • the connection line leads to a feed line to a fuel pump or to a return line, via which fuel is returned from an internal combustion engine of the motor vehicle to the fuel tank.
  • the suction jet pump is used to feed fuel from one chamber of the fuel tank into another chamber or into a splash pot.
  • the bend piece is in this case adapted for simple mounting of the connection line on the connection piece and is matched to the spatial conditions in the fuel tank.
  • the bend piece is generally of undulating design or has a 90° or 180° bend.
  • the end piece is produced as single component by welding together two half-shells which are produced by injection molding. The bend piece is then prestressed with respect to the nozzle.
  • a drawback of this arrangement is that considerable turbulence is imparted to a flow of fuel in the fuel line. As a result, the suction jet pump provided with the fuel line has a very low efficiency.
  • the invention is based on the problem of designing a fuel line of the type described in the introduction in such a way that flows of fuel in this line are guided with particularly low turbulence. Furthermore, it is intended to provide two processes, which are as simple and inexpensive as possible, for producing the fuel line.
  • the first problem is solved by the fact that the nozzle, the bend piece and the connection piece are produced integrally from plastics.
  • This configuration means that the fuel line according to the invention does not have any shoulders between the bend piece and the nozzle, and consequently no turbulence is imparted to the flow of fuel at this location. Therefore, as a result of the invention, fuel passes from the connection piece to the nozzle with low levels of flow losses. Consequently, the suction jet pump provided with the fuel line according to the invention is particularly highly efficient. Furthermore, swirling of the flow is reliably avoided in the region between the nozzle and the bend piece, which further increases the efficiency of the suction jet pump having the fuel line according to the invention.
  • the second problem namely that of providing a process which is as simple and inexpensive as possible for producing the fuel line from plastics is solved, according to the invention, by the fact that the cross section of the mold, at least at one end, is completely filled with the molten plastic, and that after the plastic at the wall of the mold has cooled, liquid plastic located in the core region of the mold is forced out by a high-pressure gaseous or liquid medium.
  • This process makes it possible to produce virtually any desired form of bends and cross-sectional changes in the fuel line.
  • the invention means that it is not necessary to weld together shell parts of the fuel line, as in the known process. Consequently, the process entails a particularly small number of working steps and can therefore be used very economically in particular in series production, as is used for suction jet pumps for motor vehicles.
  • a further advantage of this design is that the inner wall of the entire fuel line is formed by the flow of the medium and therefore does not have any seam. Consequently, turbulence in the flow of fuel within the fuel line produced using the process according to the invention is kept at a particularly low level. If there are high demands imposed on external dimensions of the fuel line, the mold may initially be completely filled with liquid plastic. In this way, moreover, it is also possible to produce holding elements and latching elements.
  • This process according to the invention makes it possible to ensure a uniform wall thickness of the fuel line. This leads to a particularly low use of material for the production of the fuel line.
  • the fuel line produced using this process has a particularly smooth inner wall. Consequently, turbulence in the flow of fuel within the fuel line is kept at a particularly low level.
  • the blank In order for the blank to be preshaped, the latter can be heated in zones if necessary. Then, the preshaped blank can be deformed in the mold to form the fuel line.
  • FIG. 1 shows a longitudinal section through a fuel line according to the invention
  • FIG. 2 shows a liquid plastic which has been introduced into a mold for the fuel line before the core region is blown out
  • FIG. 3 shows a blank of a mold which is in the form of a flexible tube, for a further embodiment of the fuel line.
  • FIG. 1 shows a fuel line 1 with a nozzle 2 , a bend piece 3 and a connection piece 4 in longitudinal section, as well as components of a fuel tank 5 , which are indicated by dot-dashed lines.
  • the fuel line 1 is produced as a single part from plastics.
  • Holding elements 6 and latching elements 7 are arranged on the outer side of the bend piece 3 .
  • dot-dashed lines in FIG. 1 show a mixer tube 8 , which is directed onto the nozzle 2 , of a suction jet pump arranged in the fuel tank 5 .
  • the suction jet pump is used, for example, to feed fuel from one chamber of the fuel tank 5 to a second chamber or into a splash pot.
  • a line 9 which is likewise indicated by dot-dashed lines, is fitted onto the connection piece 4 .
  • the line 9 may, for example, be a branch from a feedline of a fuel pump.
  • FIG. 2 shows a mold 11 , which has been filled with molten plastic 10 , for a further embodiment of the fuel line during production of the latter.
  • a pressure line 12 is connected to one end of the mold 11 .
  • the edge region of the plastic solidifies first. This edge region forms the fuel line which is to be produced and is illustrated in dot-dashed lines in the drawing.
  • a gas is forced into the mold 11 at high pressure via the pressure line 12 . This gas forces the plastic 10 which is still in liquid form in the core region out of the mold 11 at the other end.
  • the fuel line can then be removed from the mold 11 . This process allows the outer contour of the fuel line to be designed virtually as desired and provided with latching elements 13 .
  • FIG. 3 shows a blank 14 , which is in the form of a flexible tube, and half of a mold 15 for a further embodiment of the fuel line.
  • the blank 14 extends over the entire length of the mold 15 and is preshaped in accordance with the fuel line which is to be produced.
  • the blank 14 is fitted onto a pressure line 16 and in a further operation can be inserted into the mold 15 .
  • the blank 14 is inflated via the pressure line 16 until it bears uniformly against the inner wall of the mold 15 .
  • the inflated blank 14 has been removed from the mold 15 , its ends have to be processed further in order to complete the fuel line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reciprocating Pumps (AREA)
US10/466,639 2001-01-19 2002-01-18 Pump fluid pipe for an ejector pump and two methods for producing said pump fluid pipe Abandoned US20040101416A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10117968A DE10117968A1 (de) 2001-01-19 2001-01-19 Treibmittelleitung für eine Saugstrahlpumpe und zwei Verfahren zur Herstellung der Treibmittelleitung
DE10117968.5 2001-01-19
PCT/DE2002/000142 WO2002057061A2 (de) 2001-01-19 2002-01-18 Treibmittelleitung für eine saugstrahlpumpe und zwei verfahren zur herstellung der treibmitteilleitung

Publications (1)

Publication Number Publication Date
US20040101416A1 true US20040101416A1 (en) 2004-05-27

Family

ID=7681149

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/466,639 Abandoned US20040101416A1 (en) 2001-01-19 2002-01-18 Pump fluid pipe for an ejector pump and two methods for producing said pump fluid pipe

Country Status (8)

Country Link
US (1) US20040101416A1 (de)
EP (1) EP1401625B1 (de)
JP (1) JP2004523685A (de)
CN (1) CN1524034A (de)
AT (1) ATE335580T1 (de)
BR (1) BR0206522A (de)
DE (2) DE10117968A1 (de)
WO (1) WO2002057061A2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017114636A1 (de) * 2015-12-29 2017-07-06 Robert Bosch Gmbh Komponente für brennstoffeinspritzanlage und verfahren zum herstellen einer komponente einer brennstoffeinspritzanlage
US20190048768A1 (en) * 2016-04-19 2019-02-14 ElringKIinger AG Ejector device and combination of a cylinder head cover and an ejector device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1926356A1 (de) * 2006-11-22 2008-05-28 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO Produkt mit Festkörper und einem oder mehreren Innenräumen
EP1925419A1 (de) * 2006-11-22 2008-05-28 Nederlandse Organisatie voor Toegepast-Natuuurwetenschappelijk Onderzoek TNO Produkt mit Festkörper und internen Hohlkammern
EP1937044A1 (de) * 2006-12-22 2008-06-25 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO Verfahren zur Herstellung eines Leiters

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090886A (en) * 1989-04-21 1992-02-25 Klockner Ferromatik Desma Gmbh Apparatus for the injection molding of fluid-filled plastic bodies
US5522417A (en) * 1994-04-21 1996-06-04 Nifco Inc. Anti-spilling valve for vehicle fuel tank
US6058911A (en) * 1997-04-07 2000-05-09 Nissan Motor Co., Ltd. Fuel chamber for automotive vehicle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1837290U (de) * 1958-07-16 1961-09-07 Karl Maegerle Fa Behaelter aus thermoplastistichem kunststoff.
FR1584765A (de) * 1968-07-08 1970-01-02
DE3612194C1 (de) * 1986-04-11 1986-10-16 Daimler-Benz Ag, 7000 Stuttgart Im Kraftstoffbehälter eines Kraftfahrzeuges vorgesehene Kraftstoffstauvorrichtung
DE8815751U1 (de) * 1988-12-20 1989-02-16 Gebr. Jordan Gmbh & Co Kg, 5860 Iserlohn, De
DE4204627C2 (de) * 1992-02-15 1994-12-22 Happich Gmbh Gebr Lagerachse für Sonnenblenden von Fahrzeugen und Verfahren zum Herstellen einer solchen
JP3395981B2 (ja) * 1992-07-31 2003-04-14 株式会社ニフコ プラスチック製チューブ，およびその製造方法
DE4400958C1 (de) * 1994-01-14 1995-04-06 Bayerische Motoren Werke Ag Saugstrahlpumpe
JPH0985768A (ja) * 1995-09-27 1997-03-31 Bando Chem Ind Ltd 中空品成形金型
DE19851665C2 (de) * 1998-11-10 2002-12-12 Ulrich Stieler Verfahren zur Herstellung von medienführenden Leitungen unter Einsatz des Gasinnendruckverfahrens, dabei verwendete Spritzgießform und damit hergestellte Leitung
AU714337B3 (en) * 1999-09-14 1999-12-23 Zoltans Pool Products Pty Ltd Fluid flow pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090886A (en) * 1989-04-21 1992-02-25 Klockner Ferromatik Desma Gmbh Apparatus for the injection molding of fluid-filled plastic bodies
US5522417A (en) * 1994-04-21 1996-06-04 Nifco Inc. Anti-spilling valve for vehicle fuel tank
US6058911A (en) * 1997-04-07 2000-05-09 Nissan Motor Co., Ltd. Fuel chamber for automotive vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017114636A1 (de) * 2015-12-29 2017-07-06 Robert Bosch Gmbh Komponente für brennstoffeinspritzanlage und verfahren zum herstellen einer komponente einer brennstoffeinspritzanlage
US11365709B2 (en) 2015-12-29 2022-06-21 Robert Bosch Gmbh Component for a fuel injection system and method for manufacturing a component of a fuel injection system
US20190048768A1 (en) * 2016-04-19 2019-02-14 ElringKIinger AG Ejector device and combination of a cylinder head cover and an ejector device
US10982575B2 (en) * 2016-04-19 2021-04-20 Elringklinger Ag Ejector device and combination of a cylinder head cover and an ejector device

Also Published As

Publication number Publication date
JP2004523685A (ja) 2004-08-05
EP1401625B1 (de) 2006-08-09
WO2002057061A2 (de) 2002-07-25
CN1524034A (zh) 2004-08-25
BR0206522A (pt) 2004-02-17
DE10117968A1 (de) 2002-08-01
ATE335580T1 (de) 2006-09-15
DE50207802D1 (de) 2006-09-21
EP1401625A2 (de) 2004-03-31
WO2002057061A3 (de) 2004-01-22

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ECK, KARL;KELLER, DIETER;REEL/FRAME:014959/0395;SIGNING DATES FROM 20021128 TO 20031211

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION