EP2906813A1 - Système d'alimentation en carburant - Google Patents

Système d'alimentation en carburant

Info

Publication number
EP2906813A1
EP2906813A1 EP13776477.5A EP13776477A EP2906813A1 EP 2906813 A1 EP2906813 A1 EP 2906813A1 EP 13776477 A EP13776477 A EP 13776477A EP 2906813 A1 EP2906813 A1 EP 2906813A1
Authority
EP
European Patent Office
Prior art keywords
fuel
volume
tank
supply device
pot
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
EP13776477.5A
Other languages
German (de)
English (en)
Other versions
EP2906813B1 (fr
Inventor
Ronald Pott
Olaf Krabus
Ingo Helms
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.)
Volkswagen AG
Original Assignee
Volkswagen 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
Priority claimed from DE201210020321 external-priority patent/DE102012020321A1/de
Priority claimed from DE201210020396 external-priority patent/DE102012020396A1/de
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP2906813A1 publication Critical patent/EP2906813A1/fr
Application granted granted Critical
Publication of EP2906813B1 publication Critical patent/EP2906813B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump
    • 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 supply device for an internal combustion engine, in particular of a vehicle, comprising a fuel tank with a tank volume, a supply line for the fuel from the fuel tank to the internal combustion engine, a return line for the delivery of unused fuel from the internal combustion engine to the fuel tank, a Fuel pump, which is arranged in the flow, in the interior of the fuel tank, a flow line of the flow and / or a return line of the return and arranged in the fuel tank swirl pot whose pot volume is separated from the tank volume of the fuel tank, wherein the swirl pot connected to the suction side of the fuel pump is.
  • the invention relates to a fuel supply device for an internal combustion engine, in particular of a vehicle, comprising a fuel tank with a tank volume, a feed line for the fuel from the fuel tank to the internal combustion engine, a return line for the delivery of unused fuel from the internal combustion engine to the fuel tank, a fuel pump disposed in the forward passage, a surge pot disposed in the fuel tank, the pot volume of which is separated from the tank volume of the fuel tank and connected to the suction side of the fuel pump, and a suction jet pump and / or a check valve disposed in the fuel tank and to fill the swirl pot connect the tank volume with the pot volume, the suction jet pump for supplying a drive current via a feed line with the flow, in particular with the flow line, is connected.
  • a fuel supply device with a flow, a return, a swirl pot and a suction jet pump for filling the swirl pot is known from the document DE 44 26 685 A1.
  • the disclosed swirl pot consists of two spatially separate chambers, wherein in the first chamber, the suction jet pump is arranged and the second chamber is associated with the suction side of a fuel pump arranged in the flow.
  • the suction jet pump fills the second chamber, wherein both chambers are also connected via an overflow line.
  • the document also shows an open connection of the return line with the swirl pot.
  • the publications DE 10 2010 034 434 A1, DE 197 50 036 A1, DE 195 41 723 A1 and WO 2009/062805 A1 show a fuel supply device with a flow, a return and a swirl pot, in which the return ends open in the swirl pot.
  • Fuel supply devices with a pressure-limiting valve arranged in the supply line are known from the publications DE 10 2008 044 904 A1 and DE 10 2004 061 874 A1. These documents further disclose a fuel tank in which a swirl pot is arranged and in which the suction side of the fuel pump is associated with the swirl pot.
  • a fuel supply device in which no swirl pot, but a fuel accumulator assigned to the pump inlet is provided, is disclosed in the document DE 196 25 629 A1. This fuel accumulator is arranged at a filter positioned between the pump inlet and the tank volume.
  • the extraction line is expediently arranged at the bottom of the fuel tank, which allows a nearly complete emptying of the fuel tank.
  • the problem arises that due to cornering of the vehicle and bumps the mouth of the extraction line is at least temporarily not surrounded by fuel. The result is that in such a case, air or an air-fuel vapor mixture is sucked.
  • a baffle pot also called jam pot and to ensure that there is always a certain storage volume in this. A few liters of fuel are enough.
  • the decisive factor is the filling level of the fuel.
  • the pot volume of the swirl pot is maintained by a pump.
  • a pump As a rule, it is an ejector pump, ie a pump operating on the Venturi principle.
  • Such pumps are usually driven by the flow or the return flow of the fuel.
  • a fuel filter is provided in the flow between the fuel tank and the internal combustion engine. The fuel filter frees the fuel from solid particles. Unfiltered fuel may contain various types of contaminants, such as pieces of paint or debris that have entered the tank during filling, but also rust, which has been formed by moisture in the steel tanks, or paraffins crystallized in the cold fuel.
  • the invention has the object of providing an optimized fuel supply device.
  • heating of the fuel for cold start and / or normal operation, in particular at low ambient temperatures, is not required, wherein the fuel supply device should also be usable for vehicles which have a heating device.
  • the respective subclaims relate to particularly expedient developments of the invention.
  • the starting point of the invention is a fuel supply device for an internal combustion engine, in particular of a vehicle, comprising a fuel tank with a tank volume. men, a lead for directing the fuel from the fuel tank to the internal combustion engine, a return line for carrying unused fuel from the internal combustion engine to the fuel tank, a fuel pump, which is arranged in the flow, inside the fuel tank, a flow line of the flow and / or a return line of the return, a arranged in the fuel tank surge pot whose pot volume is separated from the tank volume of the fuel tank, wherein the surge pot is connected to the suction side of the fuel pump.
  • the fuel supply device comprises a suction jet pump and / or a check valve, which are arranged in the fuel tank and connect the tank volume with the pot volume to fill the swirl pot, the suction jet pump being supplied with a propellant flow a feed line is connected to the flow and / or the return, wherein the feed line is connected by means of a controllable in dependence on the flow ratio between flow and return control valve to the flow and / or the return and / or the suction jet pump with its conveying direction parallel to the vertical, in particular to the vertical vehicle axis, is oriented.
  • the invention thus consists, in particular, in that the feed line of the suction jet pump is connected to the supply by means of a control valve controllable in dependence on the volume flow ratio between supply and return and / or the suction jet pump is oriented with its conveying direction parallel to the vertical, in particular to the vertical vehicle axis.
  • a control valve controllable in dependence on the volume flow ratio between supply and return and / or the suction jet pump is oriented with its conveying direction parallel to the vertical, in particular to the vertical vehicle axis.
  • the use of the fuel from the supply and / or the return means that the used propellant flow is replaced by unfiltered fuel and increases the proportion of paraffins and particles in the flow.
  • the targeted control of the suction jet pump as a function of the volume flow ratio between flow and return makes it possible, at least temporarily, to reduce the delivery rate of the suction jet pump or shut off the suction jet pump at a high return rate.
  • the vertical arrangement of the suction jet pump Due to the vertical arrangement of the suction jet pump, in particular by the vertical arrangement of mixing tube and diffuser, it is possible to achieve a radially symmetrical delivery. Since the suction and delivery in a vertically oriented suction jet from the Gravity field is unaffected, the flow through the mixing tube and especially of the diffuser is uniform and free of one-sided turbulence. In the fuel tank, in particular within the swirl pot, the horizontal space is limited. Therefore, in contrast to the horizontally arranged suction jet pumps known from the prior art, the vertical orientation of the suction jet pump makes it possible to design the mixing tube and above all the diffuser almost as long as desired. The length of the suction jet pump and the avoidance of turbulence in the suction jet pump improve their efficiency. A suction jet pump with better efficiency requires less drive current to convey a given fill volume. The reduction of the driving volume requirement also reduces the proportion of paraffins and particles in the forerun, especially at low ambient temperatures.
  • the suction jet pump is arranged in the surge pot, in particular at the bottom of the surge pot. This makes it possible to perform the ejector with the surge pot as an assembly, which reduces the number of parts to be assembled. Furthermore, so the entire height of the swirl pot can be used for the formation of the suction jet pump. Moreover, it is possible to arrange the suction jet pump directly above a check valve positioned in the bottom of the swirl pot and connecting the swirl pot to the tank volume. According to a further embodiment, the check valve is arranged in the suction jet pump. The check valve is designed as a an opening in the bottom of the swirl pot occlusive mushroom valve.
  • the supply valve may for example be designed as a solenoid valve which closes when the electric motor of the fuel pump.
  • the supply valve is a simple mechanical mushroom valve.
  • the object of the invention is that a fuel supply device is provided, in which the return of the suction side of the fuel pump is associated.
  • the fuel pump is for example a centrifugal pump and preferably driven by an electric motor. The fuel pump delivers about 60 liters of fuel per hour while the engine consumes about 5 liters of fuel over the same period.
  • the return in particular the return line, opens close to the inlet of the fuel pump in the surge chamber and / or is connected to the suction side of the fuel pump. There is thus, when the return is connected to the suction side of the fuel pump, no open connection between the return and swirl pot, as is the case, for example, in the solution explained in the document DE 44 26 685 A1.
  • the fuel pump comprises a suction line, which is connected on the one hand with the pump chamber of the fuel pump and on the other hand with a arranged in the swirl pot filter.
  • the return in particular the return line, connected to the filter of the fuel pump and / or to the suction line of the fuel pump.
  • the filter screen has a mesh size of 100 to 300, preferably 200 micrometers. With a high content of paraffin particles in the unfiltered fuel, it is possible that the pores of the filter screen are narrowed. As a result of the pressure of the filtered fuel flowing directly from the return line into the filter screen, only so little unfiltered fuel penetrates through the filter screen as was consumed by the internal combustion engine. This means that on the one hand, the particle load remains low and on the other hand, the fuel heats up faster in the flow. Due to the increased fuel temperature in the flow, the paraffin particles can be dissolved on the fuel filter.
  • the fuel supply device also includes a pressure relief valve for controlling the pressure in the flow. It is advantageous that the pressure relief valve is connected on the one hand with the flow and on the other hand with the return, in particular with the return line. If the pressure in the flow exceeds a limit value, a pressure reduction in the flow is required for operational safety. This pressure reduction is usually carried out by a pressure relief valve, which the flow to the tank volume and / or pot volume opens. The flow contains a very high proportion of filtered fuel through the connection of the return to the suction side of the fuel pump.
  • a further development of the fuel supply device comprises a buffer store arranged downstream of the pressure limiting valve in the return line. This serves to receive the fuel from the opening pressure relief valve with a full return.
  • the fuel supply device comprises a temperature limiting valve.
  • This temperature limiting valve serves, in particular in the case of high heat output of the internal combustion engine and / or at high ambient temperature, to limit the fuel temperature, in particular in the flow.
  • the temperature limiting valve in the return in particular in the return line, is arranged.
  • the temperature limiting valve is preferably designed as a mechanical and / or hydraulic and / or electrical, self-regulating and / or controllable three-way valve.
  • the control of the temperature limiting valve by means of a bimetal, also called crackling frog, or by means of a Wachsdehnelements.
  • a bimetal also called crackling frog
  • a Wachsdehnelements both a partial and a complete interruption of the connection of the return to the suction side of the fuel pump is possible.
  • the temperature limiting valve connects the return line, in particular the return line, as a function of the temperature of the fuel in the return to the tank volume and / or the pot volume and / or the suction side of the fuel pump. If the fuel temperature at the temperature limiting valve exceeds a limit value, for example 303 degrees Kelvin, then at least a partial flow of the fuel returned by the internal combustion engine is released freely into the swirl pot. Here, the warm fuel from the recirculation mixes with the unfiltered fuel and cools down. Since this control is only at high temperatures, where the unfiltered fuel contains little or no paraffin particles, the proportion of filtered fuel in the flow can be lower or completely eliminated.
  • a limit value for example 303 degrees Kelvin
  • the temperature limiting valve is preferably arranged in the return flow in the flow direction of the fuel behind the pressure relief valve.
  • An increase in the fuel temperature in the flow is also possible by the fuel pump is specifically placed in an energetically unfavorable state.
  • an electric centrifugal pump is operated speed-controlled with maximum energization of the stator coils. This is possible when using an electronically commutated motor (EC motor), since in such an engine, the speed and the torque can be controlled independently.
  • EC motor electronically commutated motor
  • the excess electrical power is converted directly into heat in the coils and taken up in the pump room of the fuel, for example.
  • the fuel supply device shown so far supplies an internal combustion engine.
  • a heater is installed in the manner of a heater.
  • the invention thus also relates to a fuel supply device for supplying an internal combustion engine and a heating device.
  • the known solutions of fuel supply device are characterized by a fuel tank, which includes a tank volume, a line connecting the fuel tank with the heater, which includes a suction pipe arranged in the fuel tank, and a collecting container, which is provided for receiving the suction line, wherein the collecting container in the fuel tank and / or is arranged in a surge tank of the fuel tank.
  • the document DE 10 2005 061 604 A1 discloses a fuel supply device for removing fuel from the fuel tank of a motor vehicle for an auxiliary heater of the motor vehicle, in particular for a parking heater.
  • the fuel supply device has a collecting container which is accommodated in the fuel tank, in particular in the surge tank of the fuel tank, and is assigned exclusively to the auxiliary heater.
  • the documents DE 10 2005 000 729 A1 and DE 10 2005 059 457 A1 also show fuel supply devices with a collecting container arranged in the swirl pot.
  • DE 10 2006 017 471 A1 discloses a fuel supply device, in which for the removal of fuel from the fuel tank of a motor vehicle for a heater a suction in a arranged on the swirl pot guide is used.
  • the fuel for the combustion type heater has been taken out with a pipe from a fuel tank of a motor vehicle.
  • this has the disadvantage that, especially with a low filling level of the fuel in the fuel tank, the fuel can slosh away from an intake pipe.
  • bubbles or foams contained in the fuel which are predominantly located on the fuel surface, are sucked into the intake manifold.
  • the fuel is removed from the fuel tank by means of a built-in swirl pot.
  • These surge chambers are arranged on the fuel tank bottom and are filled, for example, by overflowing the fuel through the upper edge of the surge pot through a valved opening in the bottom of the surge pot and through an ejector jet.
  • the swirl pot stores fuel even if the fuel spills in the tank. This ensures that fuel is present at the intake pipe for the fuel supply of the internal combustion engine in all driving situations.
  • a significant improvement in the operation of the heater was achieved in that the fuel is removed from the swirl pot, since the fuel spills away less.
  • the pot volume of the swirl pot is sufficiently sized for a short-term operation of the internal combustion engine.
  • An optimized fuel supply device which makes it possible for the heating device and the internal combustion engine to be supplied with fuel from a common fuel tank independently of one another.
  • the starting point of the invention is a fuel supply device for supplying an internal combustion engine and a heater, in particular a parking heater of a motor vehicle, with fuel from a fuel tank, comprising the fuel tank, which includes a tank volume, a line connecting the fuel tank to the heater, the one in the fuel tank arranged suction line, and a collecting container which is provided for receiving the suction line, wherein the collecting container is arranged in a surge pot of the fuel tank.
  • the collecting container has a valve device which is adapted to connect the collecting volume of the collecting container with the tank volume of the fuel tank. This makes it possible to fill the sump from the tank volume without emptying the swirl pot thereby.
  • the collecting container is assigned exclusively to the heating device.
  • the collecting container includes a collecting volume, which is separated from the pot volume of the swirl pot and / or from the tank volume of the fuel tank.
  • the valve device is preferably designed as a pressure-relief valve which opens to the collecting volume of the collecting container, for example as a mushroom valve.
  • the collecting container can also be connected to the pot volume.
  • the valve device is designed, for example, as a three-way valve.
  • the swirl pot is arranged in the fuel tank and the pot volume of the swirl pot is separated from the tank volume of the fuel tank. This makes it possible to independently supply the heating device and the internal combustion engine with fuel from a common fuel tank.
  • Swirl pot is connected. This makes it possible to arrange the valve device directly in the common bottom of swirl pot and reservoir.
  • the collecting container is made with the swirl pot as an assembly.
  • the sump is integrally molded with the swirl pot.
  • the direct connection of the collecting container to the tank volume shortens the supply line to the collecting container and thus the number and complexity of the parts to be installed.
  • the volume of the collecting container can be maximized. It is favorable that the container bottom of the collecting container is executed at least in sections konturb réelle with the bottom of the swirl pot. To maintain safe operation of the heater over a period of 90 seconds, the collection volume is at least 0.03 liters.
  • the largest possible collecting volume is also available in that the inlet opening of the suction line is arranged on the container bottom of the collecting container. This arrangement is possible only by the inventive separation of the collection volume of the pot volume and the connection of the collection volume with the tank volume.
  • the sump has an opening which communicates with an end remote from the bottom of the baffle and / or at an end remote from the bottom of the fuel tank. is approximately positioned on an opposite side. This opening is therefore in the gravitational field at the top of the collection container.
  • the collecting container is filled by an overflow of the fuel from the tank volume and / or pot volume in the collecting volume.
  • the opening is connected to the pot volume of the swirl pot and / or the tank volume of the fuel tank.
  • the collecting volume is filled from the tank volume at standstill of the internal combustion engine via the valve device and during operation of the internal combustion engine and / or during operation of the surge pump via the pot volume.
  • a favorable embodiment is that the collecting container is extended over at least two thirds of the height of the swirl pot. On the one hand, this makes it possible to obtain a large collecting volume; on the other hand, if there is a lack of further filling of the collecting container and simultaneous operation of the heating device, sufficient fuel remains in the collecting container for a restart of the internal combustion engine.
  • connection of the pot volume with the tank volume is independent of the connection of the collecting volume with the tank volume. It is favorable that the removal point provided for filling the pot volume in the tank volume in the gravitational field further down, that is closer to the bottom of the fuel tank, is arranged as the connection of the collecting volume with the tank volume.
  • Fig. 1 is a schematic representation of a fuel supply device
  • FIG. 2 shows a schematic representation of the fuel supply device shown in FIG. 1 in a first embodiment
  • FIG. 3 shows a schematic representation of the fuel supply device shown in FIG. 1 in a second embodiment
  • FIG. 4 shows a schematic illustration of the fuel supply device shown in FIG. 1 in a third embodiment
  • 5 shows a schematic illustration of the fuel supply device shown in FIG. 1 in a fourth embodiment
  • Fig. 6 is a schematic representation of the suction jet pump shown in Fig. 5; 7 is a schematic representation of a fuel supply device;
  • Fig. 8 is a sectional enlarged view of a section of a fuel tank.
  • FIG. 1 shows a schematic representation of a fuel supply device 1 for an internal combustion engine 2.
  • the fuel supply device 1 comprises a fuel tank 3 with a tank volume 4, a feed line 5 for conducting the fuel from the fuel tank 3 to the internal combustion engine 2, a return line 6 for conducting unused fuel from the engine 2 to the fuel tank 3, and a fuel pump 7 arranged in the flow 5.
  • the supply line 5 has a supply line 8 and the return line 6 has a return line 9.
  • the fuel supply device 1 further comprises a surge pot 10, which is arranged in the fuel tank 3.
  • the swirl pot 10 includes a pot volume 1 1, which is separated from the tank volume 4 of the fuel tank 3.
  • the suction side of the fuel pump 7 is connected to the pot volume 1 1, the return 6 of the suction side of the fuel pump 7 is assigned.
  • a filter screen 12 is arranged in the swirl pot 10.
  • a fuel filter 13 is arranged between the fuel pump 7 and the internal combustion engine 2.
  • the further embodiment of the fuel supply device 1, in particular of the fuel tank 3, can be taken from FIGS. 2 to 6.
  • a supply valve 31 is provided in this.
  • the supply valve 31 is a mechanical mushroom valve.
  • FIGs 2 and 3 show an enlarged detail of the fuel tank 3 of the fuel supply device 1 shown in Figure 1.
  • the fuel pump 7 is arranged in the fuel tank 3, in particular in the swirl pot 10, the fuel pump 7 is arranged.
  • the fuel pump 7 has a suction line 14, which is connected on the one hand to the pump chamber of the fuel pump 7 and on the other hand to the filter screen 12.
  • the fuel supply device 1 comprises a pressure limiting valve 15 for regulating the pressure in the supply line 5.
  • the pressure limiting valve 15 is connected on the one hand to the supply line 5 and on the other hand to the return line 6.
  • the pressure relief valve 15 is connected to the flow line 8 and the return line 9.
  • the pressure relief valve 15 is shown in the preferred Embodiment, a spring-loaded check valve.
  • the fuel supply device 1 comprises a temperature limiting valve 16.
  • the temperature limiting valve 16 is arranged in the return line 6, in particular in the return line 9.
  • the temperature limiting valve 16 is preferably designed as a two-way three-way valve.
  • the temperature limiting valve 16 connects the return line 6 as a function of the fuel temperature in the return line 6 via an outlet 17 with the pot volume 1 1 or with the suction side of the fuel pump 7.
  • the temperature limiting valve 16 is arranged in the return line 9 in the flow direction of the fuel after the pressure relief valve 15.
  • FIG. 2 shows a first embodiment of the fuel supply device 1.
  • the return line 9 of the return line 6 is connected to the filter screen 12 of the fuel pump 7.
  • the return line 9 ends at or in the filter screen 12.
  • the temperature limiting valve 16 connects the return line 6 with the filter screen 12 in at least one switching state.
  • FIG. 3 shows a second embodiment of the fuel supply device 1.
  • the return line 9 is connected to the suction line 14 of the fuel pump 7.
  • the return line 9 ends at its mouth in the suction line 14.
  • the temperature limiting valve 16 connects the return line 6 with the suction line 14 of the fuel pump 7 as a function of the fuel temperature in the return line 6.
  • FIGS. 4 to 6 show an ejector pump 18 of a fuel supply device 1 shown in FIG. 1.
  • a suction jet pump 18 is used to convey fuel from the tank volume 4 into the swirl pot 10.
  • the suction jet pump 18 is driven by a partial flow of the flow 5.
  • the suction jet pump 18 comprises a feed line 19.
  • the feed line 19 connects the suction jet pump 18 to the supply line 8.
  • the drive stream is pressed in the suction jet pump 18 through a nozzle 20 shown in FIG and at the same time greatly accelerated. After the nozzle 20, the motive flow passes through a mixing tube 21 and then passes into a diffuser 22.
  • the motive flow expands again, thus creating a negative pressure in the mixing tube 21.
  • a feed 23 is connected. Due to the negative pressure in the mixing tube 21, fuel is supplied from the inlet 23 through the mixing tube 21 and the diffuser 22.
  • the inlet 23 is associated with the bottom 24 of the swirl pot 10.
  • In the bottom 24 of the swirl pot 10 or in the vicinity of the bottom 24 is an opening 25 a brought, which connects the pot volume 1 1 with the tank volume 4.
  • the opening 25 is associated with a designed as a mushroom check valve 28.
  • a further check valve designated as a supply valve 31 is provided in the surge chamber 10.
  • the supply valve 31 is a mechanical mushroom valve.
  • FIG. 4 shows, in an enlarged section of the fuel tank 3, a third embodiment of the fuel supply device 1 shown in FIG.
  • a suction jet pump 18 is arranged in the swirl pot 10 of the fuel tank 3.
  • the suction jet pump 18 is connected via the feed line 19 and arranged in the flow line 8 control valve 29 to the flow 5.
  • the size of the drive current is adjusted and thus affects the performance of the ejector 18.
  • the suction jet pump 18 is horizontally aligned in the swirl pot 10.
  • the conveying direction of the suction jet pump 18 is oriented parallel to the bottom 24 of the swirl pot 10.
  • FIG. 5 shows in an enlarged section of the fuel tank 3, a fourth embodiment of the fuel supply device shown in Figure 1.
  • the suction jet pump 18 is vertically aligned in the swirl pot 10 in this embodiment.
  • the conveying direction of the suction jet pump 18 is oriented perpendicular to the bottom 24 of the swirl pot 10.
  • the control valve 29 is disposed in a housing 30 of the fuel pump 7.
  • FIG. 7 shows a fuel supply device 1 for supplying an internal combustion engine 2 and a heating device 300, in particular a parking heater of a motor vehicle, with fuel from a fuel tank 3.
  • the fuel supply device 1 comprises at least the fuel tank 3, which encloses a tank volume 4, and the fuel tank 3 the heating device 300 connecting line 60, which comprises a arranged in the fuel tank 3 suction line 70.
  • the fuel supply device 1 further comprises a collecting container 80, which is provided for receiving the intake line 70, wherein the collecting container 80 is arranged in a surge pot 10 of the fuel tank 3.
  • a fuel pump 7 is arranged in the surge pot 10, which conveys fuel to the internal combustion engine 2 via a supply line 5.
  • a return 6 unused fuel from the internal combustion engine 2 returns to the engine Fuel tank 3, in particular to the suction side of the fuel pump 7 in the swirl pot 10.
  • the swirl pot 10 includes a pot volume 1 1 a.
  • the pot volume 1 1 is separated from the tank volume 4.
  • the surge pot 10 has at least one inlet device 31.
  • the feed device 31 is, for example, a non-return valve arranged in the boundary surface 150 of the swirl pot 10 and designed as a mushroom valve.
  • the collecting container 80 has a valve device 160. This valve device 160 is designed as a check valve, preferably in the design of a mushroom valve. By means of the valve device 160, a collecting volume 170 of the collecting container 80 can be connected to the tank volume 4 of the fuel tank 3.
  • the valve device 160 for connecting the collecting volume 170 with the tank volume 4 is arranged in the gravity field at the same height or higher than the inlet device 31 for connecting the pot volume 1 1 with the tank volume 4.
  • the collecting volume 170 of the collecting container 80 is exclusive of the heater 300th assigned.
  • the heating device 300 has a pump device 180.
  • the heating device 300 furthermore comprises a combustion apparatus 190 in which the fuel is burned.
  • the collecting container 80 has a particularly permanent opening 230 on a bottom 24 of the swirl pot 10 shown in FIG. 2 or on a side remote from the bottom 27 of the fuel tank 3.
  • the collecting container 80 is connected to the bottom 24 of the swirl pot 10, wherein the container bottom 210 of the collecting container 80 is executed at least in sections konturbmony with the bottom 24 of the swirl pot 10.
  • the valve device 160 is arranged in an opening of the container bottom 210.
  • the bottom 24 or the container bottom 210 is at a distance from the bottom 27 of the fuel tank 3. This distance serves to ensure the inflow of fuel to the valve device 160.
  • the suction line 70 arranged in the collecting container 80 has an inlet opening 230. This inlet opening 230 is assigned to the container floor 210, wherein the distance of the inlet opening 230 from the container floor 210 is smaller than five times the diameter of the suction line 70.
  • the invention also relates to a fuel supply device 1, the features of which are formed in the description of FIGS. 1 to 6 and the description of FIGS. 7 and 8 in combination.
  • a fuel supply device 1 for an internal combustion engine 2 without heating device 300 according to FIGS. 1 to 6 and with a heating device 300 according to FIGS. 7 and 8 can be equipped.
  • a fuel supply device 1 which comprises at least the technical features of patent claim 1 and, where appropriate, its dependent claims 2 to 10 as well as the at least technical features of patent claim 11 and, if appropriate, its subclaims 12 to 20.
  • a fuel supply device 1 is formed for an internal combustion engine 2, the fuel tank 3 with a tank volume 4, and a flow 5 for guiding the fuel from the fuel tank 3 to the internal combustion engine 2, and the one return 6 for conducting unused fuel from the internal combustion engine 2 to the fuel tank 3, and the one fuel pump 7, which is arranged in the flow 5, and inside the fuel tank 3, a flow line 8 of the flow 5 and / or a Return line 9 of the return line 6, and which comprises a arranged in the fuel tank 3 swirl pot 10 whose pot volume 1 1 is separated from the tank volume 4 of the fuel tank 3, wherein the swirl pot 10 is connected to the suction side of the fuel pump 7.
  • the fuel supply device 1 for supplying the internal combustion engine 2 and the heater 300 further includes a suction jet pump 18 and / or a check valve 28, which are arranged in the fuel tank 3 and to fill the surge chamber 10, the tank volume 4 with the pot volume 1 1 connect, wherein the suction jet pump 18 is connected to the supply with a drive current via a feed line 19 to the supply line 5 and / or the return line 6, wherein the supply line 19 by means of a depending on the volume flow ratio between flow 5 and return 6 controllable control valve 29 is connected to the flow 5 and / or the return line 6 and / or the suction jet pump 18 is oriented with its conveying direction parallel to the vertical, in particular to the vertical vehicle axis.

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  • 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

L'invention concerne un système d'alimentation en carburant (1) qui est destiné à un moteur à combustion interne (2) équipant notamment un véhicule et qui comprend un réservoir de carburant (3) ayant un volume de réservoir (4), un organe d'alimentation (5) permettant s'acheminer le carburant depuis le réservoir de carburant (3) vers le moteur à combustion interne (2), un organe de retour (6) permettant d'acheminer du carburant non-consommé depuis le moteur à combustion interne (2) vers le réservoir de carburant (3), une pompe à carburant (7) laquelle est disposée au sein de l'organe d'alimentation (5), une conduite d'alimentation (8) appartenant à l'organe d'alimentation (5) et/ou une conduite de retour (9) appartenant à l'organe de retour (6) situées à l'intérieur du réservoir de carburant (3), une cuve à turbulence (10) qui est disposée au sein du réservoir de carburant (3) et dont le volume de cuve (11) est séparé du volume de réservoir (4) du réservoir de carburant (3), la cuve à turbulence (10) étant reliée au côté aspiration de la pompe à carburant (7). Selon l'invention, le système d'alimentation en carburant (1) comprend une pompe à jet aspirant (18) et/ou un clapet anti-retour (28) lesquels sont disposés au sein du réservoir à carburant (3) et lesquels permettent de relier le volume de réservoir (4) au volume de cuve (11) pour ainsi remplir la cuve à turbulence (10). La pompe à jet aspirant (18) est reliée à l'organe d'alimentation (5) et/ou à l'organe de retour (6) au moyen d'une conduite d'alimentation (19) pour ainsi fournir un flux d'entraînement, la conduite d'alimentation (19) étant reliée à l'organe d'alimentation (5) et/ou à l'organe de retour (6) au moyen d'une soupape de régulation (29) pouvant être commandée en fonction du rapport entre les débits volumétriques de l'organe d'alimentation (5) et de l'organe de retour (6), et/ou la pompe à jet aspirant (18) étant orientée telle que son sens de refoulement est parallèle à la verticale, notamment à l'axe vertical du véhicule. En outre, l'invention concerne un système d'alimentation en carburant (1) qui est destiné à un moteur à combustion interne (2) et qui sert à alimenter en carburant un dispositif de chauffage (300) du véhicule, notamment un chauffage auxiliaire.
EP13776477.5A 2012-10-13 2013-10-11 Dispositif d'alimentation de combustible Active EP2906813B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE201210020321 DE102012020321A1 (de) 2012-10-13 2012-10-13 Kraftstoffversorgungseinrichtung
DE201210020396 DE102012020396A1 (de) 2012-10-18 2012-10-18 Kraftstoffversorgungseinrichtung
PCT/EP2013/071296 WO2014057093A1 (fr) 2012-10-13 2013-10-11 Système d'alimentation en carburant

Publications (2)

Publication Number Publication Date
EP2906813A1 true EP2906813A1 (fr) 2015-08-19
EP2906813B1 EP2906813B1 (fr) 2018-04-18

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EP13776477.5A Active EP2906813B1 (fr) 2012-10-13 2013-10-11 Dispositif d'alimentation de combustible

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EP (1) EP2906813B1 (fr)
CN (1) CN104838128B (fr)
WO (1) WO2014057093A1 (fr)

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CN115139781A (zh) * 2021-03-30 2022-10-04 广州汽车集团股份有限公司 燃油箱和汽车

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Also Published As

Publication number Publication date
WO2014057093A1 (fr) 2014-04-17
EP2906813B1 (fr) 2018-04-18
CN104838128B (zh) 2017-09-12
CN104838128A (zh) 2015-08-12

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