WO2012022570A1 - Fuel delivery unit having an asymmetric guide rod - Google Patents
Fuel delivery unit having an asymmetric guide rod Download PDFInfo
- Publication number
- WO2012022570A1 WO2012022570A1 PCT/EP2011/062416 EP2011062416W WO2012022570A1 WO 2012022570 A1 WO2012022570 A1 WO 2012022570A1 EP 2011062416 W EP2011062416 W EP 2011062416W WO 2012022570 A1 WO2012022570 A1 WO 2012022570A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide rod
- delivery unit
- fuel delivery
- tank
- fuel
- Prior art date
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
- F02M37/04—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
- F02M37/103—Mounting pumps on fuel tanks
-
- 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
- a fuel delivery unit for a fuel tank has a tank flange and a base conveyor unit. Between the base conveyor unit and the tank flange exactly one guide rod is arranged. In this case, a cross section of the guide rod is not configured rotationally symmetrical perpendicular to its longitudinal axis. By this asymmetry can be met with a single guide rod both a fixation or holding function in a plane (xy plane) perpendicular to the longitudinal axis of the guide rod. This fixes the base feed unit with respect to the tank flange and at the same time with respect to the entire tank.
- the fuel delivery unit according to the invention in tanks with different tank heights can be used or is suitable for this, since a height compensation along the guide rod is possible.
- the guide rod has geometric elements which prevent rotation of the base conveyor unit about the longitudinal axis of the guide rod.
- the cross section of the guide rod perpendicular to its longitudinal axis is not rotationally or non-circularly symmetrical. A rotational symmetry would be given, for example, if a rotation of the cross section about any angle about the longitudinal axis of the cross section of the guide rod on itself forms. In the cross section of the guide rod according to the invention, this is not the case, that is, there is at least one angle in which the
- Cross-section is not mapped to itself.
- An example of a rotationally symmetrical cross section is a circle.
- the guide rod has a longitudinal axis.
- the longitudinal axis may be the axis of the guide rod which corresponds to the direction of its greatest extent.
- the longitudinal axis can run between the tank flange and the base conveyor unit.
- the base conveyor unit may for example have a storage pot and a pump.
- the storage pot is continuously filled with fuel and thanks to the
- the pump may be, for example, an electric fuel pump (EKP).
- EKP electric fuel pump
- the guide rod is disposed between the base conveyor unit and the tank flange. In this case, for example, it may be partly integrated in the flange and possibly also in the storage pot.
- the rotationally asymmetrical design of the guide rod can according to one embodiment of the invention imply that its cross section to the longitudinal axis has a U-shaped, L-shaped, polygonal or elliptical cross section.
- the guide rod may be designed according to an embodiment as a square tube.
- the cross section of the guide rod may correspond to a three, a five or a hexagon.
- a spring element may be provided in the interior of the guide rod.
- the spring element can yield when force or load and return to the original shape when relieved.
- the spring element gains potential energy when compressed and exerts a corresponding force on the base conveyor unit, so that the storage cup is pressed to the bottom of the fuel tank.
- the spring element can be designed as a compression spring, air spring, gas spring or coil spring. Furthermore, the spring element can be arranged at least in part within the guide rod in the storage pot, that is, on the tank bottom side.
- the spring length is no longer forced to be adapted to a length of the guide rod, since the spring is compressible.
- manufacturing costs can be saved by producing a uniform spring length with variant redundancy.
- the spring element can already be integrated into the interior of the guide rod during the production process of the guide rod, for example during a stamping bending process. This allows the assembly of the Fuel delivery unit be facilitated.
- costs and time can be saved by the fact that the normally delivered as bulk material springs according to the embodiment of the invention need not be unraveled.
- the guide rod is designed as a stamped bending profile.
- the guide rod is punched, for example, from a metallic material such as copper, iron or aluminum or a non-metallic material such as polyester, polyamide or an epoxy resin sheet. Subsequently, the stamped sheet is formed by bending and thereby induces a plastic permanent deformation.
- the guide rod on a metallic material is made entirely of metal, semi-metal and / or alloys.
- the guide rod may comprise metallic components.
- the realization of the guide rod with a metallic material increases the stability of the device.
- the guide rods produced in this way have a high resistance torque, that is to say a high resistance to wear, for example against kinking.
- the necessary interfaces, such as a press-fit of the guide rod on the flange and / or a locking of the guide rod on the storage pot, can also be integrated into the guide rod in the stamping bending process. Thus, only one work process is necessary and the
- Guide rod can be integrally formed with the interfaces. By avoiding additional processing steps costs can be significantly reduced. Furthermore, functional restrictions, such as, for example, noise development of plastic, for example plastic pairings, can be avoided by forming the guide rod as a stamped bent profile.
- a fuel tank is described with a fuel delivery unit shown above.
- the fuel delivery unit can be inserted into a mounting opening of the fuel tank.
- the tank flange can be attached to the respective tank. be fit and have interfaces such as electrical connections to the tank. Due to the inventive design of the fuel delivery unit, the base conveyor unit is pressed with a storage pot to the tank bottom.
- a method of manufacturing a fuel delivery unit as described above comprises the following steps: providing a material such as a metal or a plastic, preferably in sheet form; Punching the material, for example with a punching mask and plastic bending of the material.
- the guide rod is arranged after its production between the base conveyor unit and the tank flange or integrated into this.
- the punching mask and also the bending process are designed such that the cross section of the finished guide rod is rotationally asymmetric perpendicular to its longitudinal axis.
- Fig. 1 shows schematically a cross section through a fuel tank with a fuel delivery unit according to an embodiment of the invention
- Fig. 2 shows schematically cross sections of the guide rod perpendicular to
- Fig. 3 schematically branches a side view of a guide rod with a U-profile or cross section according to an embodiment of the invention
- FIG. 4 shows schematically a sectional view of a guide rod, which is designed according to an embodiment of the invention as a square tube punching-bending profile
- FIG. 1 schematically shows a cross section through a fuel tank 3 with a fuel delivery unit 1.
- the fuel delivery unit 1 can be inserted into an opening of the tank 3.
- the fuel delivery unit 1 has a tank flange 5 which has corresponding connections to the fuel tank 3.
- the fuel delivery unit 1 has a base delivery unit 7.
- the base conveyor unit 7 has a storage cup 17, in which a pump 19 is arranged.
- the pump 19 may be configured as an electric fuel pump and may be directly or indirectly connected to a fuel machine 21, such as a motor.
- the tank flange 5 is connected via a guide rod 9 to the base conveyor unit 7 or to the storage cup 17.
- the guide rod 9 is designed such that a height compensation in the z-direction, that is, a movement of the base conveyor unit 7 in the direction of the tank bottom or in the direction of tank flange 5 is possible.
- the height compensation can be, for example, a few millimeters to centimeters.
- the guide rod 9 is configured such that a holding function of the base conveyor unit 7 with respect to the tank flange 5 and to the fuel tank 3 is ensured. That is, the base conveyor unit 7 is fixed by means of the guide rod 9 in an x-y plane, ie a plane transverse to the longitudinal axis 13 of the guide rod 9.
- the base conveyor unit 7 can thus not be rotated about the guide rod 9, for example.
- the guide rod 9 has a non-rotationally symmetrical cross section 1 1 perpendicular to its longitudinal axis 13.
- the storage cup 17 is pressed against the tank bottom by means of a spring element 15 located in the interior of the guide rod 9.
- a tank height difference of 10-20 mm can be compensated.
- the Tank Ecknunter Kunststoffe to be compensated may be due to different manufacturers or, for example, in the same tank due to temperature fluctuations and internal tank pressure differences.
- the spring element 15 is designed such that it generates a hold-down force of the base conveyor unit 7 relative to the tank bottom.
- the spring element 15 may be designed, for example, as a compression spring such that under all conditions and different operating conditions, a minimum contact pressure of the base conveyor unit 7 is ensured to the tank bottom. Due to the rotational asymmetry of the guide rod 9, a guide rod 9 is sufficient to secure the holding function of the base conveyor unit 7 to the tank flange 5. As a result, fewer components and fewer interfaces are required, thereby working time, building materials and costs can be saved. Furthermore, the spring element 15 with a standard length satisfies all tank height variants, since this is compressible.
- the guide rod 9 and the spring element 15 can together or
- the guide rod 9 can be manufactured, for example, for adaptation to different tank heights in different predefined lengths in a stamping bending process.
- Fig. 2 are schematically cross sections 1 1 of the guide rod 9 perpendicular to
- the guide rod 9 may be configured, for example, as a tube with a cavity in the interior. This is illustrated for example in FIGS. 2a, 2c and 2d.
- the rod can be made of solid material, as shown for example in FIGS. 2b, 2e, 2f and 2g.
- the cross sections 1 1 are not rotationally symmetrical. That is, they can not be converted into themselves by rotation at any angle.
- the cross-sections may be polygonal, elliptical, L- or U-shaped. Polygonal can be a three, four, five, six, seven, eight, or n-corner.
- FIG. 3 schematically shows a side view of a guide rod 9 with a U-shaped cross-section 11.
- the interfaces 23 may be configured, for example, as projecting serrations which are each insertable into corresponding recesses on the flange 5. Further, the interfaces 23 may be configured as recesses on the guide rod 9.
- a section of the back of the illustrated guide rod 9 is shown.
- interfaces 25 may be provided, which engage with the storage cup 17, for example.
- the interface 25 may be a click-and-snap connection.
- Fig. 4 is a sectional view of a guide rod 9 is shown schematically, which is designed as a square tube.
- the square tube is a stamped bending profile with a square, U-shaped or quadrangular cross section 11.
- a compression spring 15 is arranged inside the square tube.
- a first end of the guide rod 9 (in FIG. 4, the upper end) is fixed, for example, on the tank flange, for example by means of one of the embodiments shown in Figure 3.
- a second end of the guide rod 9 (in Fig. 4, the lower end) may be arranged to be relatively movable in a receptacle of the storage cup 17, for example by immersing in the receptacle with a variable depth.
- the second end of the guide rod 9 is movable, for example, with respect to the storage cup 17 or with respect to a contact surface 33.
- the guide rod 9 or the square tube 9 has an upper contact surface 27 for the spring element 15. Furthermore, the trained example as a shoulder contact surface 33 is provided in the receptacle of the storage cup 17.
- the spring element 15 is supported on the one hand on the upper contact surface 27 of the guide rod 9 and on the other hand on the contact surface 33 of the receptacle.
- the spring element 15 is arranged at least in sections in the guide rod. Furthermore, at least one stop 31 for maximum lift, for example, during transport or during disassembly from the fuel tank 3 is arranged on the guide rod 9 in that the stop 31 protrudes into a recess of the receptacle.
- a fixing lug 29 is further provided for holding the spring element 15 in the guide rod 9.
- the mobility of the guide rod 9 in the receptacle of the storage pot can be limited.
- the mobility can be limited by the elasticity of the spring element 15.
- the movement of the guide rod 9 can be limited by stops 31 in the receptacle of the storage pot 17.
- the receptacle of the storage cup 17 may have a recess which is bounded by the stops 31. In this recess, a projection or a nose or a projection of the guide rod 9 engage and thereby determine the maximum deflectability or mobility of the guide rod 9.
- a maximum stroke of the guide rod can be determined by the distance between the two stops 31.
- the guide rod 9 allows height compensation in the z-direction and simultaneously thanks to the design as a square tube a holding function of the base conveyor unit 7 with respect to the tank flange 5 and the fuel tank third
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013003812A BR112013003812A2 (en) | 2010-08-20 | 2011-07-20 | fuel supply unit with asymmetric guide rod |
CN201180040409.0A CN103069148B (en) | 2010-08-20 | 2011-07-20 | There is the fuel delivery unit of asymmetric guide rod |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010039546 DE102010039546A1 (en) | 2010-08-20 | 2010-08-20 | Fuel delivery unit with asymmetrical guide rod |
DE102010039546.3 | 2010-08-20 | ||
DE201110006734 DE102011006734A1 (en) | 2010-08-20 | 2011-04-04 | Fuel delivery unit with asymmetrical guide rod |
DE102011006734.5 | 2011-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012022570A1 true WO2012022570A1 (en) | 2012-02-23 |
Family
ID=45557398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/062416 WO2012022570A1 (en) | 2010-08-20 | 2011-07-20 | Fuel delivery unit having an asymmetric guide rod |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN103069148B (en) |
BR (1) | BR112013003812A2 (en) |
DE (2) | DE102010039546A1 (en) |
WO (1) | WO2012022570A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108700007A (en) * | 2016-03-14 | 2018-10-23 | 株式会社电装 | Fuel supply system |
US11118551B2 (en) * | 2018-04-27 | 2021-09-14 | Denso Corporation | Fuel supply device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19524034A1 (en) * | 1995-07-01 | 1997-01-02 | Vdo Schindling | Unit for fuel supply |
FR2873960A1 (en) * | 2004-08-06 | 2006-02-10 | Marwal Systems Snc | Fuel e.g. diesel, drawing and/or gauging device for motor vehicle, has mast extending in vertical direction and serving as common support to different accessories intervening in function of drawing and/or gauging of fuel |
US20060130815A1 (en) * | 2004-12-16 | 2006-06-22 | Visteon Global Technologies, Inc. | Fuel delivery assembly for dual lobe fuel tank |
EP2072797A1 (en) * | 2007-12-20 | 2009-06-24 | Kwang Yang Motor Co., Ltd. | Structure of motorcycle fuel pump |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2875859B1 (en) * | 2004-09-28 | 2011-05-06 | Marwal Systems | ACCESSORY DEVICE FOR A PILOT MODULE OF THE TANK OF A MOTOR VEHICLE |
-
2010
- 2010-08-20 DE DE201010039546 patent/DE102010039546A1/en not_active Withdrawn
-
2011
- 2011-04-04 DE DE201110006734 patent/DE102011006734A1/en not_active Withdrawn
- 2011-07-20 CN CN201180040409.0A patent/CN103069148B/en not_active Expired - Fee Related
- 2011-07-20 WO PCT/EP2011/062416 patent/WO2012022570A1/en active Application Filing
- 2011-07-20 BR BR112013003812A patent/BR112013003812A2/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19524034A1 (en) * | 1995-07-01 | 1997-01-02 | Vdo Schindling | Unit for fuel supply |
FR2873960A1 (en) * | 2004-08-06 | 2006-02-10 | Marwal Systems Snc | Fuel e.g. diesel, drawing and/or gauging device for motor vehicle, has mast extending in vertical direction and serving as common support to different accessories intervening in function of drawing and/or gauging of fuel |
US20060130815A1 (en) * | 2004-12-16 | 2006-06-22 | Visteon Global Technologies, Inc. | Fuel delivery assembly for dual lobe fuel tank |
EP2072797A1 (en) * | 2007-12-20 | 2009-06-24 | Kwang Yang Motor Co., Ltd. | Structure of motorcycle fuel pump |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108700007A (en) * | 2016-03-14 | 2018-10-23 | 株式会社电装 | Fuel supply system |
US10648436B2 (en) | 2016-03-14 | 2020-05-12 | Denso Corporation | Fuel supply device |
US11118551B2 (en) * | 2018-04-27 | 2021-09-14 | Denso Corporation | Fuel supply device |
Also Published As
Publication number | Publication date |
---|---|
CN103069148B (en) | 2015-11-25 |
BR112013003812A2 (en) | 2016-06-28 |
DE102011006734A1 (en) | 2012-02-23 |
CN103069148A (en) | 2013-04-24 |
DE102010039546A1 (en) | 2012-02-23 |
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