EP1022457A2 - Kraftstofffördereinheit - Google Patents
Kraftstofffördereinheit Download PDFInfo
- Publication number
- EP1022457A2 EP1022457A2 EP00100871A EP00100871A EP1022457A2 EP 1022457 A2 EP1022457 A2 EP 1022457A2 EP 00100871 A EP00100871 A EP 00100871A EP 00100871 A EP00100871 A EP 00100871A EP 1022457 A2 EP1022457 A2 EP 1022457A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stage
- fuel
- preliminary stage
- delivery unit
- unit 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
Links
Images
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
- F02M37/04—Feeding by means of driven pumps
- F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary pumps
-
- 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
- F02M37/20—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 characterised by means for preventing vapour lock
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86187—Plural tanks or compartments connected for serial flow
- Y10T137/86228—With communicating opening in common walls of tanks or compartments
Definitions
- the invention relates to a fuel delivery unit for a motor vehicle with a for mounting in a fuel tank provided a preliminary and a main level having fuel pump, with one for filling provided by the pre-stage surge to collect of fuel for the intake from the swirl pot Main stage, with the preliminary stage and the main stage of a vertical shaft can be driven.
- the preliminary stage and the main stage of the fuel pump are in the known fuel delivery unit designed as peripheral pumps and point to the vertical Shaft attached impellers.
- the vertical wave is a motor shaft one also in the baffle arranged electric motor.
- the preliminary stage is usually below arranged in the main stage and fills the baffle via a riser pipe.
- the main stage sucks from the Baffle and creates one for an internal combustion engine of the motor vehicle necessary pressure.
- the fuel delivery unit is very compact.
- a disadvantage of the known fuel delivery unit is that it has very large dimensions and that the wheels the feed pump very high in the fuel feed unit are arranged. This is in the fuel tank and a very high one in the surge pot Level of fuel required so that Can promote fuel delivery unit. Especially with one Cornering of the fuel tank or when hot There is fuel in the fuel tank even at a very high level Fuel tank the risk that the precursor air or Fuel vapors suck in and foam with the fuel generated and promoted in the surge pot.
- the invention is based on the problem of a fuel delivery unit of the type mentioned at the beginning that it is particularly compact and that the impellers of the feed pump are arranged as low as possible are.
- the preliminary stage has a radially outward pointing and has an upwardly increasing outlet channel.
- This design allows existing prepress Gas bubbles discharged very easily through its outlet channel become.
- the outlet channel can be in outside of the feed pump the vertical riser of the known fuel delivery unit be redirected.
- An existing one in the riser Liquid column can go up because of the rising outlet channel the escape of the gas bubbles do not interfere.
- the impellers of the preliminary stage and the main level very close together and together Place very close to the bottom of the fuel tank. This is for the operation of the invention Fuel delivery unit a particularly low level required in the fuel tank.
- the invention Fuel delivery unit is also special compact.
- Fuel delivery unit helps when the Main stage a vertical one, from a delivery chamber of the Main stage led to the bottom area of the baffle Has inlet duct.
- Another advantage of this design is that the feed pump, aside of the deflection on the riser pipe, straight inlet channels and Has outlet channels. This increases the risk of evaporation kept particularly low by hot fuel.
- the feed pump is advantageous according to another Further development of the invention is structurally simple, if the outlet channel of the preliminary stage differs from its Delivery chamber from constantly expanding.
- the preliminary stage could, for example, be a peripheral pump with blade chambers arranged in the circumference of the impeller be designed. However, this is an exact setting of the impeller on an axial play of the feed pump is required.
- Such an attitude can be according to one other advantageous development of the invention simply avoid if the preliminary stage is designed as a side channel pump and the delivery chamber only in one of their End faces is arranged. Hereby rule on the End faces of the impeller of the preliminary stage are different Press so that the impeller is to the side of the lesser Pressure is pressed. This effect is also caused by a Leakage from the main stage on the shaft to the preliminary stage overflowing fuel supported.
- the feed pump can be advantageous according to another Further development of the invention is particularly inexpensive manufacture if the impeller of the preliminary stage together with a part of a delivery chamber housing part the fuel pump as a thrust bearing for the fuel pump and one driving the fuel pump Electric motor is designed.
- the impeller and the housing part can for example to form the thrust bearing have a lubricious coating or pockets for Have generation of a sliding film from fuel.
- Heating the fuel in the preliminary stage can be according to another advantageous one Avoid further development of the invention if a housing wall between the pre-stage and the main stage from one heat insulating material is made. This will the risk of fuel evaporating in the intake port the preliminary stage was kept particularly low.
- a swirl of the fuel drawn in by the preliminary stage can be according to another advantageous development avoid the invention particularly reliably, if the baffle is one in the center of its base area Recess for the intake of fuel through the preliminary stage has and if an inlet channel of the preliminary stage is vertical the impeller of the preliminary stage is arranged tapered. Farther this creates the inventive Fuel delivery unit particularly compact.
- the invention Conveyor unit is also easy to manufacture and assemble.
- FIG. 1 shows schematically an inventive, in a fuel tank 1 mounted fuel delivery unit 2 in longitudinal section.
- the fuel delivery unit 2 has a flange 3 and a swirl pot 4.
- the flange 3 serves for fastening in a recess 5 of an upper one Wall 6 of the fuel tank 1.
- the surge pot 4 is biased against a bottom 7 of the fuel tank 1.
- In the surge pot 4 is one of an electric motor 8 driven feed pump 9 with a preliminary stage 10 and a main stage 11.
- Prepress 10 serves to deliver fuel from the fuel tank 1 into the baffle 4.
- the main stage 11 sucks Fuel from the surge pot 4 and promotes this one on the outside of the flange 3 of the fuel delivery unit 2 arranged connecting piece 12.
- connection piece 12 can be one of a not shown Connect the flow line leading the internal combustion engine. Furthermore, the flange 3 has a connection piece 13 for a likewise not shown, of the Internal combustion engine returned to the fuel tank 1 Return line. Backflowing fuel arrives either directly into the surge pot 4 or initially to a fuel tank, also not shown 1 mounted suction jet pump. The suction jet pump then pumps fuel into the Swirl pot 4.
- the preliminary stage 10 and the main stage 11 are each as Side channel pumps are designed and each have one a shaft 14 mounted impeller 15, 16.
- In the shaft 14 is a motor shaft of the electric motor.
- the precursor 10 has one of the bottom area of the fuel tank 1 taper perpendicular to the impeller 15 Inlet channel 17.
- An outlet channel 18 of the preliminary stage 10 has radially outwards and rises upwards. Then the outlet channel 18 opens into an open at the top Riser 19.
- One from the inlet duct 17 to the outlet duct 18 guided delivery chamber 20 is exclusive on the side of the impeller facing away from the main stage 11 15 arranged.
- the delivery chamber 20 is each for Half in the impeller 15 and one opposite the impeller 15 Housing part 21.
- the housing part 21 and that Impeller 15 form an axial bearing for the feed pump 9 and the electric motor 8.
- the main stage 11 has two that Impeller 16 opposite housing parts 22, 23 with a through the impeller 16 from an inlet channel 24 to one Outlet channel 25 guided delivery chamber 26.
- In the lower Housing part 23 is the inlet channel 24 of the main stage 11 arranged, while in the upper housing part 22nd the outlet channel 25 is located.
- the cross-sectional area of the Delivery chamber 20 of precursor 10 has approximately twice as much large dimensions such as the cross-sectional area of the delivery chamber 26 of the main level 11.
- FIG 2 shows a sectional view through the Feed pump 9 of Figure 1 along the line II - II that the impeller 15 of the preliminary stage 10 has a plurality of vane chambers 27 Has.
- the blade chambers 27 are each of guide vanes 28 limited. Generate when the impeller 15 rotates the guide vanes 28 a circulation flow in the delivery chamber 20.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
- Fig.1
- eine schematische Darstellung einer erfindungsgemäßen Kraftstoffördereinheit in einem Längs schnitt
- Fig.2
- eine Schnittdarstellung durch eine Vorstufe der Kraftstoffördereinheit aus Figur 1 entlang der Linie II - II.
Claims (8)
- Kraftstoffördereinheit für ein Kraftfahrzeug mit einer zur Montage in einem Kraftstoffbehälter vorgesehenen, eine Vorstufe und eine Hauptstufe aufweisenden Kraftstoffpumpe, mit einem zur Befüllung durch die Vorstufe vorgesehenen Schwalltopf zum Sammeln von Kraftstoff für die aus dem Schwalltopf ansaugende Hauptstufe, wobei die Vorstufe und die Hauptstufe von einer vertikalen Welle antreibbar sind, dadurch gekennzeichnet, daß die Vorstufe (10) einen radial nach außen hin weisenden und nach oben hin ansteigenden Auslaßkanal (18) hat.
- Kraftstoffördereinheit nach Anspruch 1, dadurch gekennzeichnet, daß die Hauptstufe (11) einen vertikalen, von einer Förderkammer (26) der Hauptstufe (11) bis zu dem Bodenbereich des Schwalltopfes (4) geführten Einlaßkanal (24) hat.
- Kraftstoffördereinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sich der Auslaßkanal (18) der Vorstufe (10) von deren Förderkammer (20) aus stetig erweitert.
- Kraftstoffördereinheit nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Vorstufe (10) als Seitenkanalpumpe ausgebildet und die Förderkammer (20) ausschließlich in einer ihrer Stirnseiten angeordnet ist.
- Kraftstoffördereinheit nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Laufrad (15) der Vorstufe (10) zusammen mit einem einen Teil der Förderkammer (20) aufweisenden Gehäuseteil (21) der Förderpumpe (9) als Axiallager für die Förderpumpe (9) und einem die Förderpumpe (9) antreibenden Elektromotor (8) gestaltet ist.
- Kraftstoffördereinheit nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein Gehäuseteil (23) zwischen der Vorstufe (10) und der Hauptstufe (11) aus einem wärmeisolierenden Material gefertigt ist.
- Kraftstoffördereinheit nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Schaufelkammern (27) der Vorstufe (10) an der der Hauptstufe (11) abgewandten Stirnseite angeordnet sind.
- Kraftstoffördereinheit nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schwalltopf (4) im Zentrum seines Bodenbereichs eine Ausnehmung zur Ansaugung von Kraftstoff durch die Vorstufe (10) hat und daß ein Einlaßkanal (17) der Vorstufe (10) vertikal auf das Laufrad (15) der Vorstufe (10) zulaufend angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19902427 | 1999-01-22 | ||
DE1999102427 DE19902427C1 (de) | 1999-01-22 | 1999-01-22 | Kraftstofffördereinheit |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1022457A2 true EP1022457A2 (de) | 2000-07-26 |
EP1022457A3 EP1022457A3 (de) | 2000-12-20 |
EP1022457B1 EP1022457B1 (de) | 2003-01-02 |
Family
ID=7895040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000100871 Revoked EP1022457B1 (de) | 1999-01-22 | 2000-01-18 | Kraftstofffördereinheit |
Country Status (6)
Country | Link |
---|---|
US (1) | US6425377B1 (de) |
EP (1) | EP1022457B1 (de) |
AU (1) | AU754374B2 (de) |
BR (1) | BR0000133A (de) |
DE (2) | DE19902427C1 (de) |
ES (1) | ES2189707T3 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004002459A1 (de) * | 2004-01-16 | 2005-08-11 | Siemens Ag | Verfahren zur Einstellung der Fördermenge einer aus einem Kraftstofftank Kraftstoff ansaugenden Kraftstoffpumpeneinheit und Kraftstoffpumpeneinheit für das Verfahren |
US7165932B2 (en) * | 2005-01-24 | 2007-01-23 | Visteon Global Technologies, Inc. | Fuel pump having dual single sided impeller |
US7632060B2 (en) * | 2005-01-24 | 2009-12-15 | Ford Global Technologies, Llc | Fuel pump having dual flow channel |
DE102006003669A1 (de) * | 2006-01-26 | 2007-08-02 | Bayerische Motoren Werke Ag | Kraftstoff-Fördersystem, insbesondere für ein Kraftfahrzeug |
JP4552906B2 (ja) * | 2006-02-24 | 2010-09-29 | 株式会社デンソー | 燃料供給装置 |
US9279420B2 (en) | 2013-05-31 | 2016-03-08 | Intellectual Property Holdings, Llc | Natural gas compressor |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4125345A (en) * | 1974-09-20 | 1978-11-14 | Hitachi, Ltd. | Turbo-fluid device |
DE8705763U1 (de) * | 1987-04-18 | 1987-07-23 | Pierburg GmbH, 4040 Neuss | Brennstoffördereinrichtung für eine Brennkraftmaschine |
US5009575A (en) * | 1988-11-07 | 1991-04-23 | Aisan Kogyo Kabushiki Kaisha | Vapor lock preventing mechanism in motor-driven fuel pump |
JPH02103194U (de) * | 1989-01-31 | 1990-08-16 | ||
DE3941147A1 (de) * | 1989-12-13 | 1991-06-20 | Bosch Gmbh Robert | Vorrichtung zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges |
US5050567A (en) * | 1991-02-01 | 1991-09-24 | Aisan Kogyo Kabushiki Kaisha | Fuel supply system |
US5111844A (en) * | 1991-10-28 | 1992-05-12 | General Motors Corporation | Automotive fuel system |
DE4242242C2 (de) * | 1992-12-15 | 2003-04-30 | Bosch Gmbh Robert | Vorrichtung zum Versorgen der Brennkraftmaschine eines Kraftfahrzeuges mit in einem Vorratstank vorhandenem Kraftstoff |
DE4304334A1 (de) * | 1993-02-13 | 1994-08-18 | Bosch Gmbh Robert | Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs |
US5525039A (en) * | 1993-07-21 | 1996-06-11 | Roy E. Roth Company | Hermetically sealed magnetic drive pump |
DE4344777C2 (de) * | 1993-12-28 | 1998-06-04 | Technoflow Tube Systems Gmbh | Kraftstoff-Versorgungssystem für ein Kraftfahrzeug mit Ottomotor |
DE19501353C2 (de) * | 1995-01-18 | 2003-04-10 | Pierburg Gmbh | Brennstoffördereinrichtung für eine Brennkraftmaschine |
US5718208A (en) * | 1996-09-16 | 1998-02-17 | Ford Motor Company | Fuel vapor management system |
US5960775A (en) * | 1997-12-08 | 1999-10-05 | Walbro Corporation | Filtered fuel pump module |
-
1999
- 1999-01-22 DE DE1999102427 patent/DE19902427C1/de not_active Revoked
-
2000
- 2000-01-17 AU AU12441/00A patent/AU754374B2/en not_active Ceased
- 2000-01-18 DE DE50000987T patent/DE50000987D1/de not_active Revoked
- 2000-01-18 EP EP20000100871 patent/EP1022457B1/de not_active Revoked
- 2000-01-18 ES ES00100871T patent/ES2189707T3/es not_active Expired - Lifetime
- 2000-01-21 BR BR0000133A patent/BR0000133A/pt not_active IP Right Cessation
- 2000-01-24 US US09/490,339 patent/US6425377B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None |
Also Published As
Publication number | Publication date |
---|---|
EP1022457B1 (de) | 2003-01-02 |
ES2189707T3 (es) | 2003-07-16 |
AU1244100A (en) | 2000-07-27 |
EP1022457A3 (de) | 2000-12-20 |
BR0000133A (pt) | 2000-10-17 |
US6425377B1 (en) | 2002-07-30 |
AU754374B2 (en) | 2002-11-14 |
DE50000987D1 (de) | 2003-02-06 |
DE19902427C1 (de) | 2000-08-24 |
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