EP1155230A1 - Pompe a jet aspirant - Google Patents

Pompe a jet aspirant

Info

Publication number
EP1155230A1
EP1155230A1 EP00976064A EP00976064A EP1155230A1 EP 1155230 A1 EP1155230 A1 EP 1155230A1 EP 00976064 A EP00976064 A EP 00976064A EP 00976064 A EP00976064 A EP 00976064A EP 1155230 A1 EP1155230 A1 EP 1155230A1
Authority
EP
European Patent Office
Prior art keywords
jet pump
mixing tube
suction jet
nozzle
pump according
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
EP00976064A
Other languages
German (de)
English (en)
Other versions
EP1155230B1 (fr
Inventor
Dirk Becker
Johannes Deichmann
Peter Marx
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
Publication of EP1155230A1 publication Critical patent/EP1155230A1/fr
Application granted granted Critical
Publication of EP1155230B1 publication Critical patent/EP1155230B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump

Definitions

  • the invention relates to a suction jet pump with a nozzle arranged in front of a mixing tube and with holding elements for aligning the nozzle with respect to the mixing tube, the nozzle and the mixing tube being made of plastic by injection molding.
  • Suction jet pumps of the above type are frequently used in fuel tanks in today's motor vehicles and are therefore known.
  • the suction jet pumps are mostly used to fill a baffle arranged in the fuel tank or in a multi-chamber tank to deliver fuel from one chamber to the other chamber.
  • the mixing tube and the nozzle are manufactured in separate molds, for example in the injection molding process, and then glued together.
  • the holding elements are designed as one-piece webs fastened to the nozzle and are supported on corresponding surfaces of the mixing tube after the assembly of the suction jet pump.
  • a disadvantage of the known suction jet pump is that the nozzle and the mixing tube each have tolerances and are therefore very difficult to align with one another. However, incorrect alignment of the nozzle relative to the mixing tube leads to a sharp drop in the efficiency of the suction jet pump.
  • the invention is based on the problem of designing a suction jet pump of the type mentioned at the outset in such a way that it has a particularly high degree of efficiency and is inexpensive to produce.
  • nozzle and the mixing tube are designed for production as a coherent component in a common tool shape.
  • the suction jet pump has a particularly high efficiency. Since all essential components of the suction jet pump according to the invention are manufactured in one piece, incorrect assembly likewise does not lead to a reduction in their efficiency.
  • the suction jet pump can also be manufactured particularly inexpensively due to its manufacture in a single mold. Another advantage of this design is that the suction jet pump according to the invention has a high stability and therefore holding forces in the fuel tank do not lead to a reduction in its efficiency.
  • annular sealing surface for sealing the suction jet pump mounted in the delivery unit or in the swirl pot is arranged on the outside of the mixing tube.
  • the suction jet pump according to the invention can easily be clamped in an adjacent component if latching means for fastening to the delivery unit or to the baffle are arranged on the outside of the mixing tube.
  • the latching means are structurally particularly simple if the latching means are designed as latching hooks.
  • the production of the suction jet pump according to the invention can be produced in a largely axially demoldable mold if the entire mixing tube from the suction area to its free end is designed to be straight or flared.
  • straight sections of the mixing tube and conical sections can alternate.
  • Intake openings for the intake of fuel could, for example, be arranged in the end of the mixing tube which receives the nozzle.
  • the suction jet pump according to the invention is particularly compact if the holding elements are designed to limit the suction openings arranged in the lateral surface of the mixing tube.
  • FIG. 1 shows a schematic illustration of a delivery unit with a suction jet pump according to the invention
  • FIG. 2 shows a perspective illustration of the suction jet pump from FIG. 1.
  • FIG. 1 schematically shows a delivery unit 3 mounted in a baffle 1 of a fuel tank 2 of a motor vehicle.
  • the delivery unit 3 has an impeller 5 of a feed pump 6 driven by an electric motor 4 and is sealingly inserted into an opening 7 in the bottom of the baffle 1.
  • a suction jet pump 8 is arranged in the holder for the delivery unit 3.
  • the suction jet pump 8 is supplied with fuel via a propellant line 9 connected to the impeller 5.
  • the fuel delivered to the suction jet pump via the propellant line first reaches a nozzle 10.
  • the suction jet pump 8 sucks fuel from the fuel tank 1 via suction openings 11 and delivers it into the swirl pot 1.
  • the feed pump 6 sucks fuel out of the swirl pot 1 via a line 12 and conveys this via a further line 13 to an internal combustion engine, not shown machine of the motor vehicle.
  • the suction jet pump 8 has on its end face near the nozzle 10 a sealing flange 14 with which it is biased against a correspondingly designed area of the delivery unit 3. With its end opposite the sealing flange 14, the suction jet pump 8 penetrates a recess 15 in the delivery unit 3. An O-ring 16 is arranged in the recess 15.
  • the suction jet pump 8 has an annular sealing surface 17 in this area.
  • FIG 2 shows the suction jet pump 8 of Figure 1 in a perspective view.
  • the suction jet pump has a mixing tube 18 opposite the nozzle 10.
  • the suction openings 11 are arranged in the mixing tube 18 in the region adjacent to the nozzle 10.
  • the suction openings 11 are laterally delimited by holding elements 19 designed as webs.
  • the mixing tube 18 has a latching hook 20 fastened to the outer lateral surface.
  • the radially outer and the inner surface of the mixing tube 18 are each cylindrical.
  • the nozzle 10 tapers towards the mixing tube 18.
  • the suction jet pump 8, with the exception of the suction openings 11, can be manufactured in one piece in an axially demoldable mold.
  • the suction openings 11 can be manufactured, for example, by means of cores to be inserted into the mold or by machining.

Abstract

L'invention concerne une pompe à jet aspirant (8) pour une unité d'alimentation placée dans le réservoir de carburant d'un véhicule. Ladite pompe est dotée d'une buse (10) formant une seule pièce avec un tube de mélange (18), qui se présente sous forme de cylindre tubulaire, si bien que la pompe (8) peut être presque entièrement formée en matière synthétique dans un moule à démoulage axial. Par conséquent, la buse (10) est située exactement en face du tube de mélange (18), conférant ainsi à la pompe à jet aspirant (8) un rendement particulièrement élevé.
EP00976064A 1999-11-26 2000-11-22 Pompe a jet aspirant Expired - Lifetime EP1155230B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19957066 1999-11-26
DE19957066A DE19957066A1 (de) 1999-11-26 1999-11-26 Saugstrahlpumpe
PCT/EP2000/011607 WO2001038719A1 (fr) 1999-11-26 2000-11-22 Pompe a jet aspirant

Publications (2)

Publication Number Publication Date
EP1155230A1 true EP1155230A1 (fr) 2001-11-21
EP1155230B1 EP1155230B1 (fr) 2006-01-18

Family

ID=7930502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00976064A Expired - Lifetime EP1155230B1 (fr) 1999-11-26 2000-11-22 Pompe a jet aspirant

Country Status (9)

Country Link
US (1) US6619927B1 (fr)
EP (1) EP1155230B1 (fr)
JP (1) JP2003515046A (fr)
KR (1) KR20010101711A (fr)
CN (1) CN1338026A (fr)
BR (1) BR0007712B1 (fr)
DE (2) DE19957066A1 (fr)
ES (1) ES2256058T3 (fr)
WO (1) WO2001038719A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10237050B3 (de) 2002-08-09 2004-04-15 Siemens Ag Saugstrahlpumpe
ES2245567B1 (es) * 2003-09-16 2007-04-01 Loramendi, S.A. Dispositivo expulsor de caja de machos con distribucion de agente desmoldeante.
KR100578540B1 (ko) * 2004-07-28 2006-05-15 한국뉴매틱(주) 진공 이젝터 펌프
US7914263B2 (en) * 2007-05-14 2011-03-29 Vladimir Berger Ejector-type rotary device
US8644260B2 (en) * 2009-05-01 2014-02-04 Qualcomm Incorporated Apparatus and method for increasing reliability of serving cell change
US9039385B2 (en) 2011-11-28 2015-05-26 Ford Global Technologies, Llc Jet pump assembly
DE102013203942B4 (de) * 2013-03-07 2014-12-04 Continental Automotive Gmbh In einem Kraftstoffbehälter eines Kraftfahrzeugs angeordnete Saugstrahlpumpe
DE102016206616A1 (de) 2016-04-19 2017-10-19 Elringklinger Ag Ejektorvorrichtung und Kombination aus einer Zylinderkopfhaube und einer Ejektorvorrichtung
DE102016206615A1 (de) * 2016-04-19 2017-10-19 Elringklinger Ag Ejektorvorrichtung und Kombination aus einer Zylinderkopfhaube und einer Ejektorvorrichtung
DE102021202671A1 (de) * 2021-03-18 2022-09-22 Vitesco Technologies GmbH Mischrohrrohling, Mischrohr, Mischrohraufnahme, Saugstrahlpumpe und Verfahren zu deren Herstellung

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530128A (en) * 1974-10-21 1978-10-25 Gen Electric Jet pumps and nozzles therefor
US4834132A (en) * 1986-09-25 1989-05-30 Nissan Motor Company, Limited Fuel transfer apparatus
DE3719809C1 (de) * 1987-06-13 1988-06-09 Daimler Benz Ag Stautopf fuer Kraftstoffbehaelter
JP2580021B2 (ja) * 1988-12-07 1997-02-12 日産自動車株式会社 自動車用燃料タンクの旋回槽
DE8815751U1 (fr) * 1988-12-20 1989-02-16 Gebr. Jordan Gmbh & Co Kg, 5860 Iserlohn, De
WO1992008037A1 (fr) * 1990-11-03 1992-05-14 Peco Machine Shop & Inspection Services Ltd. Systeme de pompe a jet au fond du puits utilisant un gaz comme fluide de commande
GB2271327A (en) * 1992-10-10 1994-04-13 Ford Motor Co A fuel tank reservoir.
DE4310761C2 (de) * 1993-04-01 1995-10-12 Kayser A Gmbh & Co Kg Strahlpumpe
DE4400958C1 (de) * 1994-01-14 1995-04-06 Bayerische Motoren Werke Ag Saugstrahlpumpe
DE19512700A1 (de) * 1995-04-07 1996-10-10 Teves Gmbh Alfred Strahlpumpe
DE19530423C2 (de) * 1995-08-18 1999-06-02 Mannesmann Vdo Ag Saugstrahlpumpe für den Einsatz in einem Kraftstofftank
DE19618649A1 (de) * 1996-05-09 1997-11-13 Bosch Gmbh Robert Kraftstoffördereinrichtung eines Kraftfahrzeuges
DE19714858C1 (de) * 1997-04-10 1998-11-19 Kayser Automotive Systems Gmbh Saugstrahlpumpe
DE19805072C2 (de) * 1998-02-09 1999-11-11 Bosch Gmbh Robert Kraftstoffördermodul
SE511716E5 (sv) * 1998-03-20 2009-01-28 Piab Ab Ejektorpump
DE19830504B4 (de) * 1998-07-08 2005-12-22 Siemens Ag Für den Einsatz in einem Kraftstoffbehälter eines Kraftfahrzeuges vorgesehener Schwalltopf
DE19833130A1 (de) * 1998-07-23 2000-01-27 Bosch Gmbh Robert Vorrichtung zum Fördern von Kraftstoff aus einem Vorratsbehälter zur Brennkraftmaschine eines Kraftfahrzeugs
EP1103717B1 (fr) * 1999-11-23 2005-03-23 Siemens Aktiengesellschaft Pompe disposée dans le réceptacle d'un réservoir de carburant d'un véhicule

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0138719A1 *

Also Published As

Publication number Publication date
DE19957066A1 (de) 2001-05-31
BR0007712A (pt) 2001-11-27
CN1338026A (zh) 2002-02-27
KR20010101711A (ko) 2001-11-14
ES2256058T3 (es) 2006-07-16
US6619927B1 (en) 2003-09-16
DE50012089D1 (de) 2006-04-06
WO2001038719A1 (fr) 2001-05-31
JP2003515046A (ja) 2003-04-22
EP1155230B1 (fr) 2006-01-18
BR0007712B1 (pt) 2010-04-06

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