EP1342002B1 - Kraftstoffpumpe für ein kraftfahrzeug - Google Patents
Kraftstoffpumpe für ein kraftfahrzeug Download PDFInfo
- Publication number
- EP1342002B1 EP1342002B1 EP01984705A EP01984705A EP1342002B1 EP 1342002 B1 EP1342002 B1 EP 1342002B1 EP 01984705 A EP01984705 A EP 01984705A EP 01984705 A EP01984705 A EP 01984705A EP 1342002 B1 EP1342002 B1 EP 1342002B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- electric motor
- fuel pump
- stage
- main stage
- 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
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
- F02M37/04—Feeding by means of driven 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
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
- F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
- F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
Definitions
- the invention relates to a fuel pump for a motor vehicle, consisting of a preliminary stage and a main stage, for delivering the fuel to one Internal combustion engine of the motor vehicle and an electric motor for driving the preliminary and main stages.
- DE-U-9 104 511 describes such a fuel pump.
- Such fuel pumps known for gasoline or diesel fuel are in today's motor vehicles are often used.
- the fuel pump forms in the Usually with one to be inserted into an opening in the fuel tank Flange a pre-assembled, structural unit.
- the flange carries one Connection piece on which a flow line leading to the internal combustion engine can be connected, and a connector for one of the Internal combustion engine returning return line.
- the one from the internal combustion engine Returned fuel then becomes the fuel tank or fed to a baffle.
- the pre-stage and the main stage often as an axial flow side channel pump or peripheral pump trained and together on the bottom of the baffle facing end of the electric motor.
- a shaft of the electric motor drives an impeller of the pre-stage and the main stage.
- the prepress and the main stage are together with the electric motor Housing arranged.
- the electric motor is from that of the main stage flows through delivered fuel.
- a disadvantage of known fuel pumps is that on the internal combustion engine fuel that is not required, but is heated by it via the Return line is led back into the baffle. With renewed funding of this fuel by the fuel pump, the fuel is particularly in the main stage warmed even further. This can cause problems as a result the low heat resistance of the electric motor, especially the coal collector system and the adjacent electrical wiring. Because of this, the temperature of the fuel is up after the main stage limited a permissible value, or the returned fuel had to be cooled become.
- Another disadvantage is that the one promoted by the main stage Fuel swirls as it flows through the electric motor. This tends to Fuel to form vapor bubbles that form a foam with the fuel form the reliable supply of the internal combustion engine with fuel negatively affected.
- the fuel pump comes to a standstill due to leakage between the main and preliminary stages of the fuel pump to an idle Fuel pump, the engine compartment of the fuel pump between the Pressure outlet and the main stage fills with air. Furthermore, the baffle can run down the same way to the level of the main tier storage location. This leads to the low fill level in the surge pot at one Restart of the internal combustion engine at relatively long start times or misfires the internal combustion engine.
- the invention is based on the problems of a fuel pump at the outset mentioned type so that the electric motor of the fuel pump no longer thermally stressed by the fuel and a quick and secure supply of the internal combustion engine with fuel is guaranteed.
- the main stage the fuel pump directly with the flow line to the internal combustion engine is connected and is fluidically decoupled from the electric motor.
- the Intake manifold of the main stage connects to one of the preliminary stages Fuel-filled component, in particular a baffle or a fuel filter.
- An advantage of the fuel pump according to the invention is that Volume of the flow line between the main stage and the internal combustion engine can be kept very small.
- the Air cushions forming the fuel pump in the electric motor between the supply line and the main stage in previous fuel pumps is avoided. Therefore is when the engine starts with an almost empty fuel tank a delay in the delivery of fuel to the internal combustion engine kept particularly low.
- the baffle or the Fuel tank fuel returned from the internal combustion engine can be supplied to a higher temperature, because with renewed funding by the main stage of the fuel which is now hot due to the warming no longer through the electric motor, but directly into the flow line. So unnecessary heating of the electric motor is prevented. This leads to a particularly long service life of the electric motor.
- this design swirls the fuel delivered by the main stage avoided by the electric motor, so that foaming in the Flow line is prevented. With the fuel pump according to the invention thus ensuring a reliable supply of fuel to the internal combustion engine.
- the main stage arranged on the side of the electric motor opposite the preliminary stage.
- this arrangement has the advantage that this fuel pump is very quiet as it is mainly for noise Responsible main stage further from the bottom of the fuel tank is removed.
- the Pressure line of the preliminary stage approximately at the level of the main stage or above the Intake nozzle opens into a baffle. This ensures that on the one hand, there is always a sufficient amount of fuel in the surge pot for the Main level is available and that on the other hand the main level is always with Fuel is full or at least instant fuel at start-up draws in fuel and therefore immediately after starting the electric motor promotes.
- Suction of foamed fuel foam present in the swirl pot can be according to another advantageous development of the invention largely avoid if the main stage is outside the electric motor has suction line led into the bottom area of the baffle.
- the fuel pump according to the invention is particularly easy to install, if the main stage on its side facing away from the electric motor Flange with one connection piece each for your suction line and your flow line having.
- the pressure line of the preliminary stage is advantageously led by the electric motor.
- the fuel pump according to the invention thereby lubricating the bearings and cooling the coal collector system at the same time allows. It is crucial, however, that the fuel warmed and outgassing fuel due to the delivery a component is reassured so that the intake manifold of the main stage Bubble-free fuel is drawn from this component.
- a fuel pump 3 is arranged in a swirl pot 2 arranged near a bottom of a fuel tank 1.
- the fuel pump 3 has a housing 4 made of aluminum or steel with an electric motor 5 arranged therein.
- the electric motor 5 serves to drive a preliminary stage 6 and a main stage 7.
- the preliminary stage 6 is arranged near a bottom of the baffle 2, while the main stage 7 is located on the opposite side of the electric motor 5.
- the baffle 2 has an opening 8 in its bottom region, into which the fuel pump 3 is inserted in a sealing manner.
- a fuel filter 9, 10 is located below the surge pot 2 and in the upper region thereof. Fuel can flow into the surge pot 2 through the upper fuel filter 10 when the level of fuel in the fuel tank 1 is sufficiently high.
- the preliminary stage 6 and the main stage 7 are designed as side channel pumps and each have an impeller 12, 13 fastened to a shaft 11 of the electric motor 5.
- the preliminary stage 6 is connected via a suction line 14 to the fuel filter 9 arranged below the swirl pot 2 and via a pressure line 15 to the swirl pot 2.
- the preliminary stage 6 When the preliminary stage 6 is driven by the electric motor 5, the preliminary stage 6 thus sucks fuel from the fuel tank 1 and conveys it into the surge pot 2.
- the pressure line 15 is guided through the electric motor 5 and ends at the level of the main stage 7.
- the main stage 7 has, on its side facing away from the electric motor 5, a pressure connection 16 for a feed line 17 and a suction connection 18 arranged on the circumference of the fuel pump 3 for a suction line 19.
- the suction line 19 is led into the bottom region of the surge pot 2 and sucks the from there Fuel.
- the flow line is led upwards within the fuel tank 1.
- Fuel delivered via the feed line 17 reaches an internal combustion engine (not shown) of the motor vehicle.
- Fuel that is not required is fed into the surge pot 2 via a return 20. This fuel is conveyed via the suction line 19 from the main stage 7 to the internal combustion engine again without flowing through the electric motor 5 again.
- FIG. 2 shows an embodiment of the inventive design that has changed in construction
- Fuel pump 3 The fuel pump 3 is arranged in a fuel tank 1.
- the pressure line 15 of the preliminary stage 6 is through the electric motor 5 to led to a fuel fine filter 21.
- the main stage 7 is a gerotor pump.
- On the side of the main stage 7 facing away from the electric motor 5 are the Sockets 16, 18 for the suction line 19 and the flow line 17 are arranged. From there, the fuel is discharged from the main stage 7 through the intake port 18 sucked in and conveyed further to the internal combustion engine via the feed line 17. Fuel that is not required is fed into the fuel tank via a return 20 1 headed.
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)
Description
- Fig. 1:
- einen Längsschnitt durch eine Kraftstoffpumpe,
- Fig. 2:
- einen Längsschnitt durch eine andere Ausführung einer Kraftstoffpumpe.
Die Vorstufe 6 ist über eine Saugleitung 14 mit dem unterhalb des Schwalltopfes 2 angeordneten Kraftstoffilter 9 und über eine Druckleitung 15 mit dem Schwalltopf 2 verbunden. Bei einem Antrieb der Vorstufe 6 durch den Elektromotor 5 saugt die Vorstufe 6 damit Kraftstoff aus dem Kraftstoffbehälter 1 an und fördert diesen in den Schwalltopf 2. Die Druckleitung 15 ist hierbei durch den Elektromotor 5 geführt und endet in Höhe der Hauptstufe 7.
Die Hauptstufe 7 hat auf ihrer dem Elektromotor 5 abgewandten Seite einen Druckstutzen 16 für eine Vorlaufleitung 17 und einen am Umfang der Kraftstoffpumpe 3 angeordneten Ansaugstutzen 18 für eine Saugleitung 19. Die Saugleitung 19 ist bis in den Bodenbereich des Schwalltopfes 2 geführt und saugt von dort den Kraftstoff an. Die Vorlaufleitung ist innerhalb des Kraftstoffbehälters 1 nach oben geführt. Über die Vorlaufleitung 17 geförderter Kraftstoff gelangt zu einer nicht dargestellten Brennkraftmaschine des Kraftfahrzeuges. Nicht benötigter Kraftstoff wird über einen Rücklauf 20 in den Schwalltopf 2 geleitet. Dieser Kraftstoff wird über die Saugleitung 19 von der Hauptstufe 7 ohne nochmaliges Durchströmen des Elektromotors 5 wieder zur Brennkraftmaschine gefördert.
Claims (7)
- Kraftstoffpumpe für ein Kraftfahrzeug mit einer in ein Bauteil, vorzugsweise einen Schwalltopf (2) oder einen Filter fördernden Vorstufe (6), mit einer Hauptstufe (7) zur Förderung von Kraftstoff über eine Vorlaufleitung (17) zu einer Brennkraftmaschine und einem Elektromotor (5) zum Antrieb der Vor- und Hauptstufe, (6, 7) wobei die Hauptstufe (7) unmittelbar vor der Vorlaufleitung (17) zur Brennkraftmaschine angeordnet ist,
dadurch gekennzeichnet, dass die Hauptstufe (7) unmittelbar aus dem Bauteil (2, 21) Kraftstoff ansaugt und dass das Bauteil (2, 21) von einem den Elektromotor (5) aufnehmenden Gehäuse (4) unabhängig ist. - Kraftstoffpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Hauptstufe (7) auf einer der Vorstufe (6) gegenüberliegenden Seite des Elektromotors (5) angeordnet ist.
- Kraftstoffpumpe nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß eine Druckleitung (15) der Vorstufe (6) im Bereich der Hauptstufe (7) in den Schwalltopf (2) mündet.
- Kraftstoffpumpe nach Anspruch 3, dadurch gekennzeichnet, daß die Druckleitung (15) der Vorstufe (6) oberhalb des Ansaugstutzens (18) der Hauptstufe (7) in den Schwalltopf (2) mündet.
- Kraftstoffpumpe nach zumindest einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Hauptstufe (7) eine außerhalb des Elektromotors (5) bis in den Bodenbereich des Schwalltopfes (2) geführte Saugleitung (19) hat.
- Kraftstoffpumpe nach zumindest einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß an der Hauptstufe (7) an ihrer dem Elektromotor (5) abgewandten Seite, vorzugsweise an einem Flansch, ein Druckstutzen (16) und ein Ansaugstutzen (18) angeordnet sind.
- Kraftstoffpumpe nach zumindest einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Druckleitung (15) der Vorstufe (6) durch den Elektromotor (5) geführt ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10062452A DE10062452A1 (de) | 2000-12-14 | 2000-12-14 | Kraftstoffpumpe für ein Kraftfahrzeug |
DE10062452 | 2000-12-14 | ||
PCT/DE2001/004674 WO2002048535A1 (de) | 2000-12-14 | 2001-12-13 | Kraftstoffpumpe für ein kraftfahrzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1342002A1 EP1342002A1 (de) | 2003-09-10 |
EP1342002B1 true EP1342002B1 (de) | 2004-06-09 |
Family
ID=7667222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01984705A Expired - Lifetime EP1342002B1 (de) | 2000-12-14 | 2001-12-13 | Kraftstoffpumpe für ein kraftfahrzeug |
Country Status (9)
Country | Link |
---|---|
US (1) | US20040052654A1 (de) |
EP (1) | EP1342002B1 (de) |
JP (1) | JP2004515705A (de) |
KR (1) | KR20030068554A (de) |
CN (1) | CN1481473A (de) |
BR (1) | BR0116137A (de) |
DE (2) | DE10062452A1 (de) |
ES (1) | ES2223009T3 (de) |
WO (1) | WO2002048535A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4875398B2 (ja) * | 2006-04-21 | 2012-02-15 | 株式会社ケーヒン | 燃料供給モジュール |
KR100974309B1 (ko) * | 2008-08-22 | 2010-08-05 | 김명숙 | 시가 잭 |
US20150176541A1 (en) * | 2012-07-31 | 2015-06-25 | Toyota Jidosha Kabushiki Kaisha | Evaporated fuel processing device |
US9200603B2 (en) * | 2013-02-11 | 2015-12-01 | Coachman Performance, Llc | Anti-surge tank housed within a fuel vessel |
DE102016217800B4 (de) * | 2016-09-16 | 2021-12-23 | Vitesco Technologies GmbH | Fluidfördervorrichtung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3094272A (en) * | 1960-12-09 | 1963-06-18 | Trane Co | Motor-compressor apparatus |
JPS5971984U (ja) * | 1982-11-06 | 1984-05-16 | 三菱電機株式会社 | ポンプ装置 |
DE9104511U1 (de) * | 1991-04-13 | 1992-08-13 | Robert Bosch Gmbh, 7000 Stuttgart | Vorrichtung zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs |
US5111844A (en) * | 1991-10-28 | 1992-05-12 | General Motors Corporation | Automotive fuel system |
US6012904A (en) * | 1994-05-17 | 2000-01-11 | Walbro Corporation | Vented fuel module reservoir with two-stage pump |
DE4425670C2 (de) * | 1994-07-20 | 2000-08-24 | Mannesmann Vdo Ag | Kraftstoff-Versorgungseinheit für ein Kraftfahrzeug mit Dieselmotor |
DE19530421A1 (de) * | 1995-08-18 | 1997-02-20 | Vdo Schindling | Fördereinheit |
US5809975A (en) * | 1996-05-06 | 1998-09-22 | Walbro Corporation | In tank fuel pump and reservoir with stand pipe |
DE19627581A1 (de) * | 1996-07-09 | 1998-01-15 | Pierburg Ag | Anordnung einer Brennstoffpumpe |
JP2001221199A (ja) * | 2000-02-08 | 2001-08-17 | Toshiba Tec Corp | 電動ポンプ |
JP3475174B2 (ja) * | 2000-02-10 | 2003-12-08 | 東芝テック株式会社 | 電動ポンプ |
US6397822B1 (en) * | 2000-04-18 | 2002-06-04 | Uis, Inc. | Integrated fuel system unit with two-stage marine fuel pump |
-
2000
- 2000-12-14 DE DE10062452A patent/DE10062452A1/de not_active Withdrawn
-
2001
- 2001-12-13 KR KR10-2003-7007416A patent/KR20030068554A/ko not_active Application Discontinuation
- 2001-12-13 DE DE50102559T patent/DE50102559D1/de not_active Expired - Fee Related
- 2001-12-13 JP JP2002550227A patent/JP2004515705A/ja active Pending
- 2001-12-13 WO PCT/DE2001/004674 patent/WO2002048535A1/de active IP Right Grant
- 2001-12-13 US US10/450,262 patent/US20040052654A1/en not_active Abandoned
- 2001-12-13 BR BR0116137-7A patent/BR0116137A/pt not_active IP Right Cessation
- 2001-12-13 EP EP01984705A patent/EP1342002B1/de not_active Expired - Lifetime
- 2001-12-13 CN CNA018205321A patent/CN1481473A/zh active Pending
- 2001-12-13 ES ES01984705T patent/ES2223009T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2223009T3 (es) | 2005-02-16 |
CN1481473A (zh) | 2004-03-10 |
WO2002048535A1 (de) | 2002-06-20 |
KR20030068554A (ko) | 2003-08-21 |
DE50102559D1 (de) | 2004-07-15 |
BR0116137A (pt) | 2003-10-21 |
EP1342002A1 (de) | 2003-09-10 |
DE10062452A1 (de) | 2002-06-20 |
US20040052654A1 (en) | 2004-03-18 |
JP2004515705A (ja) | 2004-05-27 |
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