EP2215348A2 - Kraftstoffentnahmevorrichtung für kraftstoffbehälter - Google Patents
Kraftstoffentnahmevorrichtung für kraftstoffbehälterInfo
- Publication number
- EP2215348A2 EP2215348A2 EP08849817A EP08849817A EP2215348A2 EP 2215348 A2 EP2215348 A2 EP 2215348A2 EP 08849817 A EP08849817 A EP 08849817A EP 08849817 A EP08849817 A EP 08849817A EP 2215348 A2 EP2215348 A2 EP 2215348A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- pump
- fuel pump
- line
- extraction device
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 288
- 238000000605 extraction Methods 0.000 title claims abstract description 54
- 239000002828 fuel tank Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000001419 dependent effect Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 description 13
- 238000003825 pressing Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
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
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- 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
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
-
- 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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/04—Feeding or distributing systems using pumps
Definitions
- the invention relates to a fuel extraction device for removing fuel from a fuel tank of a vehicle, in particular a motor vehicle, wherein the fuel extraction device comprises a fuel pump lockup line and a first fuel pump with a fuel intake side and a fuel discharge side, and wherein the fuel pump bypass line is provided to the fuel in the direction of fuel take - off.
- the invention relates to a fuel tank and a vehicle.
- the invention further relates to a method for removing fuel from a fuel tank for a second fuel consumer, wherein fuel is temporarily transported out of the fuel tank to a first fuel consumer by means of a first fuel pump and fuel at the same and / or at other times via a fuel pump bypass line be directed to a second fuel consumer.
- Previous fuel systems have for private heaters and auxiliary heaters own fuel extraction devices, which are for example constructed as described in DE 10 2005 000 729 Al.
- All previously known variants in common is a second - that is additional - fuel line.
- the second fuel line is provided to supply fuel in the fuel extraction direction to the auxiliary heater or to the auxiliary heater past a first fuel pump, the first fuel pump being arranged to deliver fuel toward a first fuel consumer.
- Fuel is also referred to as fuel or as fuel.
- the fuel extraction direction designates a main flow direction of the fuel in normal active operation.
- the invention is inter alia based on the object of reducing manufacturing and maintenance costs for the fuel take-off devices, which are additionally required for the stand-up or additional heating.
- the invention is based on a generic fuel Pickup device in that the fuel delivery side of the first fuel pump is connected to a fuel discharge side of the fuel pump bypass line.
- the fuel pump bypass line may also be referred to as a bypass.
- a flow resistance value of the fuel pump bypass line in the fuel extraction direction is lower than in a reverse direction.
- the reverse direction is called reflux direction in the following.
- a quotient of the flow resistance value in the return direction divided by the flow resistance value in the fuel extraction direction is at least two, in particular at least eight, in particular at least 100.
- Fuel removal device the fuel pump bridging line comprises a check valve, wherein the flow resistance value is determined substantially by direction-dependent flow resistance of the check valve.
- the flow resistance value of the check valve in the fuel extraction direction is approximately zero.
- the fuel pump superimposed Brückungs réelle a - not shown in the figures - third fuel pump, wherein the flow resistance value of the fuel pump bypass line is dependent on an operating state of the third fuel pump.
- the Kraftstoffentnähme- device or the fuel pump bridging line is intended to be arranged completely within the fuel tank.
- the fuel pump bypass line is provided to allow a Kraftstoffentnähme for a second fuel consumer time independently of or in addition to a fuel extraction for a first fuel consumers.
- the invention is based on a generic fuel tank for a vehicle in that the fuel tank has a fuel extraction device according to one of the embodiments described above.
- the invention is based on a generic vehicle in that it has a fuel tank according to one of the embodiments described above.
- fuel is conducted at least in a section of the fuel line between the first fuel pump and the first fuel consumer in the direction of the second fuel consumer.
- the fuel is conveyed by means of a tapping point, for example a T-piece, for the second consumer from the fuel line between the first fuel pump and the first Fuel consumer tapped.
- the tapping point and the second fuel line forward the tapped fuel in the direction of the second consumer.
- the invention is based on the generic method in that the fuel pump bridging line leads fuel from the fuel tank to a fuel delivery side of the first fuel pump.
- a flow resistance value of the fuel pump bypass line in the fuel extraction direction is lower than in the reverse direction.
- a fuel intake side of the fuel pump bypass line can be connected to a fuel intake line of the first fuel pump, which leads from a first fuel extraction point to the fuel intake side of the first fuel pump.
- one fuel intake side of the fuel pump bypass line may be connected to a second fuel extraction point, wherein the fuel intake side of the fuel pump bypass line is not connected to a fuel intake line of the first fuel pump.
- the fuel pump bypass line may be partially or completely formed as part of the first fuel pump or as part of a housing of the first fuel pump.
- the fuel pump bridging line can be formed in sections or completely as part of a swirl pot.
- the check valve may be disposed outside of the surge pot and at the same time within the fuel tank interior 15.
- the fuel pump bypass line may partially be the complete part of the fuel tank wall.
- the fuel pump bridging line can also be made in one piece with the housing of the fuel pump and / or with the swirl pot and / or with the fuel tank wall.
- a movable shut-off of the check valve may, but need not be formed integrally with the housing of the fuel pump or the swirl pot or the fuel tank wall. The same applies - if available - for a pressing means for pressing the shut-off to a valve seat of the check valve.
- the check valve may be, for example, a ball valve, a cone valve, a disk valve, a poppet valve, a cartridge valve, a flap valve, a diaphragm valve, a pinch valve or a freewheeling impeller valve.
- Figure 1 is a schematic representation of a first embodiment of the fuel extraction device according to the invention with a fuel tank, and a first and a second fuel consumer;
- FIG 2 is a corresponding schematic representation of a second embodiment of the KraftstoffentnumblemeVoroplasty invention
- Figure 3 is a schematic representation of a third embodiment of the fuel extraction device according to the invention
- Figure 4 is a schematic representation of a fourth embodiment of the invention Kraftstoffent- receiving device
- FIG. 5 shows a schematic representation of a fifth embodiment of the fuel extraction device according to the invention.
- FIG. 6 shows a schematic representation of a sixth embodiment of the fuel take-off device according to the invention.
- Figure 7 is a schematic representation of a conventional fuel extraction device with a fuel tank, and a first and a second fuel consumer.
- FIG. 7 shows a schematic illustration of a conventional fuel extraction device 10 with a fuel tank 12 and a first 16 and a second 18 fuel substance consumer.
- the first fuel consumer 16 is a vehicle engine 16.
- the fuel tank 12 has a fuel tank wall 14 with which a fuel tank interior 15 is enclosed.
- the filled arrow-like triangles in the pump symbols symbolize the conveying direction of the respective pump.
- a first fuel pump 20 is provided to draw fuel from the fuel tank 12 from a first fuel extraction point 22 and to convey it into a first fuel line 24.
- the first fuel pump 20 is preferably an electrically operated prefeed pump.
- the prefeed pump can also be referred to as an "electric fuel pump" (EKP).
- EKP electric fuel pump
- the first fuel line 24 may also be referred to as a "supply line to the vehicle engine”.
- the first fuel consumer 16 is supplied with fuel via a further fuel pump 25, for example a high-pressure pump of a vehicle engine.
- the first fuel pump 20 has a fuel intake side 28 and a fuel discharge side 30.
- a second fuel line 26 is provided to suck fuel by means of a second fuel pump 32 from a second fuel extraction point 34 from the same fuel tank 12 and deliver it via a third fuel line 36 to the second fuel consumer 18.
- the second fuel pump 32 may also be considered
- the second fuel pump 32 is a controlled reciprocating metering pump.
- the second fuel pump 32 is controlled by a control unit 38 via an electrical control line 40 and / or supplied with electrical energy.
- the first 22 and preferably also the second 34 fuel extraction point are arranged in a surge pot 42. This ensures a reliable Kraftstoffentnähme for the first 16 and second 18 consumers even with a small amount of fuel in the fuel tank 12 and a back and forth sloshing of the fuel in the fuel tank 12.
- the embodiments shown in FIGS. 1 to 6 contain largely identical components with the same function and the same reference numerals as the conventional embodiment shown in FIG. In that regard, for the understanding of the following description, reference is made to the foregoing explanation of the conventional fuel extraction apparatus.
- a fourth fuel line 44 is connected to a tapping point 46 of the first fuel line 24 and provided for tapping off fuel at the tapping point 46 from the first fuel line 24. fen and lead to the second fuel pump 32.
- a fuel pump bypass line 48 is provided in order for the second consumer 18 to be able to provide fuel at the tapping point 46 even if the delivery rate of the first fuel pump 20 is insufficient or if the first fuel pump 20 is not in operation and can not be sufficiently “sucked” a fuel pump bypass line 48 is provided.
- the first fuel pump 20 can then not be “oversucked", that is, it would then oppose an intake through the second fuel pump 32 to a high internal resistance, when the first fuel pump 20 is a roller-cell pump.
- the fuel pump bypass line 48 serves to guide fuel from the second fuel take-off point 34 to a feed point 50 of the first fuel line 24, so that there is fed to the first fuel line 24 provided for the second consumer 18 amount of fuel.
- both the feed point 50 and the tapping point 46 are arranged outside of the fuel tank interior 15.
- the fuel tank interior 15 includes both the space volume 53 filled by the material of the swirl pot 42 and the space volume 53 enclosed by the swirl pot 42.
- the feed point 50 is disposed in the vicinity of the fuel tank wall 14.
- the tapping point 46 is disposed in the vicinity of the second fuel pump 32; As a result, part of the line length of the electrical line 40 to the second fuel pump 32 can be omitted.
- a combination of both measures leads to the saving of line length, space, weight and installation effort, because the sum of the length of the fuel pump lock-up line 48 plus the length of the fourth fuel line 44 is shorter than the length of the first fuel line 24 of the conventional fuel extraction device.
- the fourth fuel line 44 can be laid cool, so that outgassing is at least reduced.
- the force Substance pump bridging line 48 have a flow resistance.
- the flow resistance is preferably formed by a check valve 52.
- this may be, for example, a ball valve, a cone valve, a disk valve, a poppet valve, a cartridge valve, a flap valve, a diaphragm valve, a pinch valve or an impeller valve with a freewheel.
- the flow resistance is preferably arranged within the swirl pot 42.
- the circle in the symbol for the check valve 52 symbolizes a ball 54 as a shut-off body 54, while the V symbolizes a valve seat 56 for the ball 54.
- shut-off 54 dissolves slightly from the valve seat 56, whereby a gap 59 between see the shut-off body 54 and the valve seat 56 is formed by the fuel in the direction of the second consumer 18 flows. In this fuel extraction direction, therefore, the flow resistance of the fuel pump bypass line 48 is low. In the reverse flow direction, the shut-off body 54 is pressed into the valve seat 56 by the pressure conditions, whereby the gap 59 closes and the flow resistance is high.
- check valve 52 In order to achieve a unique, predictable opening state or closing state of the check valve 52 at a low pressure difference between a fuel inlet side 60 and a fuel delivery side 62 of the fuel bypass line 48, it is particularly preferred to the check valve 52 with a pressing means, such as a spring provided with the shut-off 54 is pressed in a direction to the valve seat 56.
- a pressing means such as a spring provided with the shut-off 54 is pressed in a direction to the valve seat 56.
- FIG. 2 shows a schematic representation of a second embodiment of the invention, which is otherwise identical in design.
- FIG. 3 shows a schematic representation of an otherwise identically designed third embodiment of the fuel extraction device 11 according to the invention, in which the feed point 50 is arranged within the swirl pot 42. This eliminates the lead out of the
- the fuel pump bridging line 48 is partially or completely part of the first fuel pump 20 or part of a housing of the first fuel pump 20. In a further embodiment, not shown, the fuel pump bridging line 48 is partially or completely part of the swirl pot 42. In a further, not shown Embodiment, the check valve 52 is indeed disposed within the fuel container interior 15, but outside the baffle 42. In a further embodiment, not shown, the fuel pump bridging line 48 is partially or completely part of the fuel tank wall 14.
- the fuel pump bridging line 48 can also be designed as one piece with the housing of the fuel pump 20 and / or with the swirl pot 42 and / or with the fuel tank wall 14 , Also, the movable shut-off body 54 of the check valve 52 may, but need not with the housing of the fuel pump 20 and the swirl pot 42 and the fuel tank wall 14th be formed integrally. The same applies - if available - for the pressing means for the shut-off 54, not shown.
- FIG. 4 shows a schematic representation of a fourth embodiment of the fuel extraction device 11 according to the invention, in which the feed point 50, the tapping point 46 and also the check valve 52 are arranged outside the fuel tank interior space 15.
- FIG. 5 shows a schematic representation of an otherwise identically designed fifth embodiment of the fuel extraction device 11 according to the invention, in which the feed point 50 is disposed within the baffle 42, while the tapping point 46 is indeed disposed within the fuel tank interior 15, but outside of the baffle 42nd
- FIG. 6 shows a schematic representation of an im
- the feed point 50 can also be arranged behind the tapping point 46 with respect to the fuel withdrawal direction 58 in the direction of the first consumer 16.
- this arrangement feature can also be combined with the other features of the first, fourth or fifth embodiment.
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
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710054597 DE102007054597A1 (de) | 2007-11-15 | 2007-11-15 | Kraftstoffentnahmevorrichtung für Kraftstoffbehälter |
| PCT/DE2008/001718 WO2009062462A2 (de) | 2007-11-15 | 2008-10-21 | Kraftstoffentnahmevorrichtung für kraftstoffbehälter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2215348A2 true EP2215348A2 (de) | 2010-08-11 |
| EP2215348B1 EP2215348B1 (de) | 2013-03-20 |
Family
ID=40560695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08849817A Not-in-force EP2215348B1 (de) | 2007-11-15 | 2008-10-21 | Kraftstoffentnahmevorrichtung für kraftstoffbehälter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2215348B1 (de) |
| DE (1) | DE102007054597A1 (de) |
| WO (1) | WO2009062462A2 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19619861C2 (de) * | 1996-05-17 | 2002-10-31 | Eberspaecher J Gmbh & Co | Motorunabhängiges Heizgerät für ein Kraftfahrzeug mit Verbrennungsmotor und Brennstoffpumpe |
| SE517158C2 (sv) * | 2000-04-17 | 2002-04-23 | Volvo Personvagnar Ab | Förfarande och arrangemang för rengöring av filter |
| DE10060355A1 (de) * | 2000-12-05 | 2002-06-20 | Webasto Thermosysteme Gmbh | Vorrichtung zur Kraftstoffversorgung eines motorunabhängig betreibbaren Fahrzeugheizgeräts |
| DE10130352A1 (de) * | 2001-06-23 | 2003-01-02 | Bosch Gmbh Robert | Einspritzanlage für eine Brennkraftmaschine mit zwei Niederdruckpumpen |
| DE102005000729A1 (de) | 2005-01-04 | 2006-07-13 | Siemens Ag | Ansaugeinrichtung für eine Standheizung eines Kraftfahrzeuges |
-
2007
- 2007-11-15 DE DE200710054597 patent/DE102007054597A1/de not_active Withdrawn
-
2008
- 2008-10-21 WO PCT/DE2008/001718 patent/WO2009062462A2/de not_active Ceased
- 2008-10-21 EP EP08849817A patent/EP2215348B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009062462A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007054597A1 (de) | 2009-05-20 |
| EP2215348B1 (de) | 2013-03-20 |
| WO2009062462A9 (de) | 2010-08-19 |
| WO2009062462A3 (de) | 2009-07-02 |
| WO2009062462A2 (de) | 2009-05-22 |
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