EP3212928A1 - Système de pompe a carburant et à fluide - Google Patents

Système de pompe a carburant et à fluide

Info

Publication number
EP3212928A1
EP3212928A1 EP15781940.0A EP15781940A EP3212928A1 EP 3212928 A1 EP3212928 A1 EP 3212928A1 EP 15781940 A EP15781940 A EP 15781940A EP 3212928 A1 EP3212928 A1 EP 3212928A1
Authority
EP
European Patent Office
Prior art keywords
fluid
pump
pump motor
current
unit
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.)
Withdrawn
Application number
EP15781940.0A
Other languages
German (de)
English (en)
Inventor
Gerald BEHRENDT
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
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
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP3212928A1 publication Critical patent/EP3212928A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/3082—Control of electrical fuel 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0201—Current

Definitions

  • Fluid and fuel pumping system The invention relates to a fluid pump system, a method of operating a fluid pumping system, and a vehicle with egg ⁇ nem such a fluid pump system.
  • Fluid pumps in the form of fuel pumps are commonly used in vehicles to pump a fuel, which is usually held ⁇ as fluid, from a fuel tank or fuel tank to a drive unit, which is usually designed in this case as an internal combustion engine to pump or to transport.
  • a fuel pump for a vehicle is usually designed to deliver the fuel to the internal combustion engine with a predetermined or specifiable fuel pressure. Furthermore, a fuel pump is usually designed to provide a vorgebba ⁇ ren volume flow of the fuel, so a certain amount of fuel per unit time (usually in liters per hour).
  • Conventional fuel pumps have a pump stage, which can be referred to as a pump unit and a Pum ⁇ penmotor on.
  • the pump motor is connected to the pump stage so gekop ⁇ pelt that the motor rotates the pump level in motion, and is pumped through this movement of the fuel.
  • the geunter ⁇ displaced flow of the fuel pump is usually proportional to the speed of the pump motor.
  • the pump stage is coupled to the fuel tank via a fuel supply line or is located in the fuel container and is coupled via a fuel discharge with the combus ⁇ tion motor.
  • a pressure sensor is usually arranged so that the fuel pressure is detected. The detected fuel pressure is used to vary the rotational speed of the pump motor ⁇ when the fuel pressure is to be changed fabric dissipation in the motor.
  • a variable-speed system is used as the pump apparatus since the rotational speed of the pump motor is proportio nal ⁇ to the volume flow. The speed is increased at a constant flow rate, so that the pressure increases in the power ⁇ material derivative. The behavior in individual cases depends on the so-called pressure stiffness of the pump stage.
  • a fluid pump system comprises a first fluid pump arrangement, which is designed to receive a fluid through a first fluid supply line and line via a first Fluidab- dispense, and a second fluid pump assembly which is adapted to increase a fluid through a second fluid supply line for ⁇ and via a second Dispense fluid drain on.
  • the first fluid pump assembly has a first Pumpenvorrich ⁇ tung, a power source and a control unit.
  • the first pump device has a first pump unit and a ⁇ ers th pump motor, said first pump motor is coupled to the first pump unit so that the first pump motor can drive the first pump unit.
  • the energy source is led out ⁇ to supply the first pump motor with power.
  • the Control unit is configured to read in a target value for a to be supplied by the first pump device fluid pressure and at a predetermined pump motor speed to the target ⁇ value for the information to supply fluid pressure to determine the corresponding current intensity for the first pump motor and thus to control the source of energy, that these are the current determined outputs to the first pump motor.
  • Such a fluid system can also be described as a multi-pump system ⁇ net.
  • the first and second fluid pump ⁇ nanssen are connected in parallel to each other and are operated synchronously.
  • the two fluid pump arrangements can also be connected in series, ie, one fluid pump arrangement is connected downstream of the other fluid pump arrangement.
  • the fluid pump system is configured so that both fluid pump assemblies a äquiva ⁇ lente amount of fluid promote, so have a substantially equal volume flow of the fluid in the respective fluid discharge on ⁇ .
  • the pumps deliver a different volume flow, z. B. 20 liters / hour, the first fluid pump assembly and 100 liters / Stun ⁇ de the second fluid pump assembly, since in such a case in a parallel operation of the two fluid pump assemblies, the pumping power from a fluid pump assembly essentially runs into the void.
  • the first fluid pump arrangement is constructed so that it provided a waiver of a pressure sensor in the fluid discharge ⁇ light.
  • the adaptation of the fluid pressure in the fluid discharge he ⁇ follows via an adjustment of the pump current and the rotational ⁇ number of the pump motor.
  • fluid pump systems can be constructed more economically.
  • the fluid pump system may also comprise more than two fluid pump assemblies, so that a plurality of fluid pump assemblies or in parallel or in mixed forms successively (parallel connection of series circuits, or vice versa ⁇ ) are connected.
  • the pump motor may be, for example, a
  • DC motor or act on a synchronous motor, the latter example, in the embodiment as a permanent magnet motor with, for example, permanent magnet rotor, which is operated with three-phase current ⁇ ben.
  • the fluid pump system can be, for example, a system for pumping fuel for a vehicle to act a Hyd ⁇ raulikpumpe or to a coolant pump for a coolant circuit ⁇ run.
  • fluid pressure in the corresponding ⁇ the first or second fluid discharge, unless it is ex ⁇ plicitly named any of this to the contrary.
  • the setpoint for the fluid pressure can be specified by an external unit, for. B. from an internal combustion engine or a component of the internal combustion engine, such as.
  • an engine control unit or an exhaust gas control unit which is supplied by the fluid pump unit with fluid or from another unit in a vehicle.
  • the energy source is in particular designed to output a specifiable current to the pump motor.
  • the Energyquel ⁇ le is in one embodiment a Stromquel ⁇ le.
  • the pump device can have a rotational speed detection unit ⁇ which is performed to determine the speed of the pump motor and pass on request, in particular to the control unit.
  • the control unit and the pump device may be spatially separated from each other and mounted, for example, in a vehicle as separate mounting units.
  • the communication or data transmission between pump device and Steuerein ⁇ unit can via a data transmission path, z. B. via a bus system such as CAN done.
  • the first fluid drain is coupled to the second fluid drainage such that these two fluid drainages open into a common drainage.
  • the first fluid pump arrangement is coupled via an ers ⁇ tes check valve with the common derivative and the second fluid pump assembly is coupled via a second return ⁇ check valve with the common derivative.
  • This structure describes the so-called parallel operation of two fluid pump assemblies.
  • both fluid pump assemblies can be used simultaneously or only one each fluid ⁇ idpumpenan extract, z. B. in alternating sequence or as redun ⁇ dantes system operated.
  • the check valves verhin ⁇ countries that a fluid pump assembly pumps fluid into the Fluidablei ⁇ processing of the other fluid pump assembly and a volume of fluid ⁇ current in an unwanted direction.
  • the second fluid pump arrangement comprises a second pump device with a second pump unit and a second pump motor, wherein the second pump motor is coupled to the second pump unit so that the second pump motor can drive the second pump unit ⁇ .
  • the energy source is running, the power the second pump motor.
  • the control unit is configured to read in a target value for a to be supplied from the second Pum ⁇ pen device fluid pressure and to determine a corresponding current value for the second pump motor at a predetermined pump motor speed to the target value for the information to supply fluid pressure and to control the power source so that these are the determined Current to the second Pumpenmo ⁇ tor outputs.
  • the first fluid pump arrangement can basically be coupled to a second fluid pump arrangement, which has a pressure sensor in the second fluid discharge.
  • the second fluid pump arrangement is, however, similar in structure to the first fluid pump assembly and has no pressure sensor in the flui ⁇ dabön on.
  • the embodiments, the first fluid pump assembly; analogous also for the second fluid pump arrangement apply Subject Author ⁇ fend.
  • the second fluid pump assembly and the first Fluidpumpenanord ⁇ voltage can be supplied in common by the same power source with energy and controlled by the same control unit.
  • Al ternatively ⁇ but both fluid pump assemblies may each egg ⁇ gene energy sources and control units.
  • the Fluidpumpen- system further comprises a storage unit which is configured to store a current-speed characteristic of the first Pumpenmo ⁇ tors, wherein the current-speed characteristic speaks a supplied from the first pump unit fluid pressure ent.
  • the storage unit can be running be durable for read access to save the characteristic values, or so that the characteristics can be adjusted if the pump device takes Variegated ⁇ te operating characteristics over time.
  • the storage unit may be configured to receive a characteristic of a configuration ⁇ unit, which writes the characteristics in the spoke clean ⁇ ness. These data can be transmitted ⁇ tungslos between the configuration unit and the memory unit ⁇ wired or lei.
  • the memory unit is designed to store a plurality of current-speed characteristics of the first pump motor, where ⁇ corresponds to each one of the current-speed characteristics each one supplied by the first pump unit fluid pressure.
  • the characteristic is an isobaric curve (pressure-constant display form or pressure lines) which the current intensity (usually expressed in Ampere) on the pump engine speed (usually expressed in revolutions per minute) applies and a particular Flu ⁇ iddruck in a graph, in the fluid discharge corresponds.
  • the reading of the current from a characteristic makes it possible that the current must not be determined algorithmically in a complex computation.
  • the current is determined by accessing a stored characteristic, in particular ⁇ special read from a map. It can held several characteristic curves for a variety of different ⁇ union fluid pressures in the fluid discharge ⁇ to. Depending on the desired or predetermined fluid pressure in the fluid discharge pipe is never accessed the corresponding ⁇ Kennli to determine the required current intensity for the Pumpenmo ⁇ tor.
  • control unit to determine the pump motor speed of the first pump motor and thus to control the source that this, adjusts the current intensity with which the first pump motor will be ⁇ driven in accordance with the characteristic curve is carried out so that the desired value for the is set or maintained by the first pump device supplied fluid pressure.
  • the pump motor speed varies, so that change in the sequence and the fluid pressure and the volume flow of the fluid in the Fluidablei ⁇ processing. This may require a monitoring of the pump motor rotation ⁇ number, to make a corresponding re-adaptation of the current intensity, so that a current intensity / speed pair of values is selected on a characteristic curve, which is on the isobaric curve corresponding to the predetermined fluid pressure or target pressure.
  • the fluid system as described herein may be in others
  • the fluid system allows egg ⁇ nen operation of a multi-pump system in an embodiment without pressure sensors in the fluid discharge.
  • the delivery volume and the fluid idyak in the fluid discharge can be easily adjusted without having to determine the fluid pressure with a complex pressure detection unit.
  • the delivery volume and the speed of the individual fluid pump arrangements can be adapted to the respective Ar ⁇ beits committee.
  • the fluid pressure in two fluid discharges is substantially the same, so that both the fluid pumping arrangements comprise a delivery or contribute to the volume flow of the common in men ⁇ dissipation.
  • a maximum permissible differential pressure between the first fluid discharge and the two ⁇ th fluid discharge may correspond to an opening pressure of one or both rear ⁇ check valves. For this reason, the information about the fluid pressure in both fluid discharges may be required.
  • a fluid pump system as described herein ver ⁇ different modes are possible.
  • the fluid pump assemblies are simultaneously and during GESAM ⁇ th operating time of the fluid pump system in operation.
  • a downstream operating mode one pump can always be in operation (continuous operation) and a second pump is switched on at peak load (peak load operation).
  • peak load operation peak load operation
  • the downstream operation may also be modified, and a pump takes over the drive Dau ⁇ heritage of the other pump.
  • the first pump at a fluid pressure of 5 bar and the second Pump can be operated at a fluid pressure of 4.5 bar. If the fluid pressure in the fluid discharge drops below 4.5 bar (eg due to large quantities), the second pump will help to achieve the required volume flow.
  • Dispensing with pressure sensors reduces the cost of such a fluid pump system.
  • An uneven flow and delivery volume distribution to the Fluidpumpenanordnun ⁇ conditions can be detected and compensated.
  • a separate pressure control system is provided for each Pumpenanord planning and the special ⁇ both fluid pump assemblies behave indepen ⁇ gig each other.
  • Decisive is the fluid pressure in the common fluid discharge, which is to be regulated here. In the case of the transfer operation, it is possible to recognize from when a fluid pump arrangement actually and effectively contributes to the winningvo ⁇ lumen.
  • the control unit as described herein assists in maintaining fluid pressure in the common fluid drain.
  • a method for driving ei ⁇ nes fluid pump system comprises the following steps: presetting a desired value for a fluid pressure in the first fluid discharge; Determining a current value which is associated with a pump motor speed of the first pump motor and the predetermined setpoint value for the fluid pressure corresponds; and outputting the extended ⁇ read current to the first motor of the first pump fluid ⁇ pump assembly.
  • the current intensity of a pump speed is associated with and corresponds to a target value for the fluid pressure means in ⁇ play that a pair of values of current and Pumpenmo ⁇ tornaviere lead to the predetermined fluid pressure in the Fluidablei ⁇ tung, so this cause by the current strength and the pump motor speed.
  • the method is particularly suitable for the operation of a sensor-less pressure-control system, that for a Fluidpumpenanord ⁇ voltage without pressure sensor in the fluid discharge.
  • the procedure ER- it enables to control a fluid pump assembly such that ei ⁇ ne pump unit is performed to achieve a desired fluid pressure under different working conditions.
  • variable-speed pump device a recourse to a variable-speed pump device is not necessary, so that a cost for its production and control gel deleted or is reduced by the method described here re ⁇ .
  • the method is based on the finding that there is a causal relationship between the current intensity, the rotational speed and the fluid pressure.
  • a fluid pressure by resorting set to isobaric pressure distribution characteristics ⁇ over sole Rege ⁇ development of the current strength of the pump motor.
  • the regulation of the current intensity can be done either by a va riable ⁇ power source or the determination or Mes ⁇ solution of the current of the pump motor and adjusting the current and speed to the desired conditions, that is at the desired fluid pressure.
  • the current is determined based on the currently applied Pum ⁇ penburniere and the desired fluid pressure.
  • the current can be determined via current speed at a given fluid pressure immediacy ⁇ bar using an isobaric curve.
  • which he ⁇ imaging engine speed can not be decisive during operation of the fluid pump assembly.
  • Decisive for the control is solely the current, which is set via a control unit.
  • the flow of Pum ⁇ penmotors can also be used alone to achieve a fluid pressure in the fluid discharge.
  • the current and voltage of the pump motor are used to determine the power transferred to the pump motor, e.g. For example, 20 watts.
  • the power transferred to the pump motor e.g. 20 watts.
  • the efficiency of the pump motor can be taken into account.
  • the determination of the current strength which is associated with the pump motor speed of the first Pum ⁇ penmotors, the following step: reading the current from a characteristic curve which corresponds to the predetermined desired value for the fluid pressure.
  • the method further comprises the steps of: monitoring the pump motor speed of the first pump motor and adjusting the current according to the characteristic curve, so that the target value for the fluid pressure in the first fluid discharge set or keep beibe ⁇ .
  • the method comprises wei ⁇ terhin the steps of: determining at each of a pump motor speed-current characteristic for a plurality of target values of the fluid pressure in the fluid discharge and providing the characteristics so determined to that of a pump motor speed supplied ⁇ arranged amperage read a predetermined setpoint of Flu ⁇ id horrs.
  • a vehicle having a fluid pumping system as described herein, wherein the fluid pumping system is configured as a fuel pumping arrangement.
  • the fuel container it is in particular egg ⁇ NEN fuel tank, wherein a fluid such.
  • a fluid such.
  • gasoline or diesel ⁇ contains.
  • the vehicle is, for example, be a force ⁇ vehicle, such as car, bus or truck, or even a rail vehicle, a ship, an aircraft, such as Heli ⁇ copter or plane.
  • a force ⁇ vehicle such as car, bus or truck, or even a rail vehicle, a ship, an aircraft, such as Heli ⁇ copter or plane.
  • Such a vehicle is in particular ⁇ special in that it has an internal combustion engine, which is used as a drive unit and is operated with a fluid.
  • the fluid pump ⁇ system is coupled to a fuel tank and is out ⁇ leads to deliver a fuel contained in the fuel tank to a drive unit of the vehicle.
  • control unit is designed to carry out the method as described above. Exemplary embodiments of the invention will be described below with reference to the figures.
  • Fig. 1 shows a schematic representation of a Fluidpum- pensystems according to an embodiment of OF INVENTION ⁇ dung.
  • FIG. 2 shows a schematic representation of a fluid pump arrangement of a fluid pump system according to one exemplary embodiment of the invention.
  • Fig. 3 shows a schematic representation of a vehicle according to another embodiment of the OF INVENTION ⁇ dung.
  • Fig. 4 shows a schematic representation of a characteristic ⁇ field of a fluid pump system according to another embodiment of the invention.
  • Fig. 5 shows a schematic representation of the steps ei ⁇ nes method according to another principalsbei ⁇ play of the invention.
  • FIG. 1 shows a fluid pump system 10 with a first fluid pump arrangement 100 and a second fluid pump arrangement 200.
  • the first fluid pump arrangement 100 is coupled to a first fluid feed line 114 and via a first fluid discharge line 116 and a first check valve 11 with the common Ablei ⁇ tion 16 connected.
  • the second fluid pump arrangement 200 is coupled to a second fluid supply line 214 and via a second fluid drain 216 and a second check valve 12 with the common derivative 16 connected.
  • the two fluid supply lines 114, 214 are referred to in this embodiment as Zu Schlusan ⁇ order 14.
  • Fig. 1 shows the two fluid pump assemblies 100, 200 in egg ⁇ nem parallel operation. In this exemplary mode of operation, the fluid pump assemblies may be particular that both fluid pump assemblies provide the same volume flow un ⁇ ter the same fluid pressure in the fluid discharges 116, 216th
  • Fig. 2 shows an example of a fluid pump assembly 100 with egg ⁇ ner pump device 105, a power source 130, a STEU ⁇ erritt 140 and a storage unit 150. It should be back dismissed that this construction principle for both Fluidpum ⁇ penan extract 100, 200 as shown in Fig. 1 may be shown. This is also indicated by the fact that some elements in FIG. 2 are each provided with two reference numerals and corresponding to the first fluid pump arrangement (100, lxx) or the second fluid pump arrangement (200, 2xx).
  • the energy ⁇ source 130, the control unit 140 and the memory unit 150, for each fluid pump assembly 100 are provided one at 200, but these may also be unique before ⁇ hands and the control of the first and second Pumpenvor- direction 105, assume 205th
  • the pump device 105 has a pump unit 110 and egg ⁇ nen pump motor 120.
  • the pump unit 110 and the pump motor ⁇ can be arranged in a common housing or represent a mounting unit.
  • the pump motor 120 is designed as a DC motor and thus connected to the pump inlet. standardized coupled 110 so that the pump motor driving the pump unit at ⁇ to pump fuel through the pump unit.
  • the fluid pump arrangement 100 is described with reference to the figures in the application example of a fuel pump arrangement ⁇ .
  • This description is for illustrative purposes only and is not intended to limit the scope of the claims to the use of the fluid pump arrangement ⁇ as a fuel pump assembly.
  • the principles of operation set forth in the figures and the associated description are valid for any type of fluid pumps.
  • the terms of the Fluidpumpenan ⁇ Regulation are related to a fuel pump assembly.
  • the pump unit 110 is indirectly via a fuel supply line 114 or directly to a fuel tank (not shown) and indirectly via the fuel discharge 116 or directly with a combustion engine (not shown) verbun ⁇ .
  • the pump device 105 may also be arranged in the fuel tank.
  • the power source 130 supplies a current of predeterminable current to the pump motor 120.
  • the rotational speed of the Pumpenmo ⁇ gate varies with the current and a change in rotational speed of the pump motor changes the pumping characteristic of the
  • the control unit 140 is coupled to both the power source 130 and to the pump device 105, in particular the Pumpenmo ⁇ gate 120 so that the control unit 140 of the Power source 130 supplied current set and the speed of the pump motor 120 can be determined or obtained.
  • the control unit 140 is further coupled to the memory unit 150 to the data stored in the storage unit 150 read out from ⁇ stored characteristic lines, respectively, and therefrom to take the current strength to be adjusted for a desired fuel pressure to ent ⁇ or determined.
  • Fig. 3 shows a vehicle 1 having an internal combustion engine as at ⁇ drive unit 5, a fuel tank 3 and a Fluidpum- pen system 10 such as in Fig. 1.
  • the fluid pump system 100 is arranged so that fuel is pumped via the supply line arrangement 14 and the common discharge line 16 from the fuel tank 3 to the drive unit 5.
  • FIG. 4 shows a characteristic field in which three characteristic curves 112A, 112B, 112C are plotted as isobaric characteristic curves.
  • the characteristic curves are entered in a diagram, which plots the current intensity 124 of the pump motor 120 over the rotational speed 122 of the pump motor 120.
  • Each characteristic curve 112A, 112B, 112C ent ⁇ speaks in each case a fuel pressure in the fuel ⁇ derivative 116.
  • the characteristic ⁇ gradients in Fig. 4 are plotted linear for purposes of illustration, this, however, depending on the respective Fluidpumpena- UTHORISATION may also have a different course.
  • the characteristic curve 112A for example, 112B, a fuel pressure of 4 bar and the characteristic 112C a fuel pressure of 2 bar entspre ⁇ chen a fuel pressure of 6 bar, the characteristic curve.
  • the speed of the pump motor may be 2500-8000 To ⁇ revolutions per minute.
  • the pump current can be between 4 amps and 17 amps.
  • step Sl the specification of a desired value for a fuel pressure in a fuel discharge takes place.
  • step S2 the determination of a current 125, which is associated with a pump motor speed 123 and the predetermined setpoint for the force material pressure corresponds (ie that a pair of values of amperage and pump motor speed ⁇ number are on an isobaric characteristic of the predetermined fuel pressure ⁇ ).
  • step S3 the read current Substituted ⁇ ben 125 follows a DC pump motor 120 of the fluid pump assembly 100.
  • a step S4 the monitoring of the pump motor speed 123, and in egg ⁇ nem step S5 is followed by adjusting the current intensity 125 according to the characteristic ⁇ line, so that the setpoint for the fuel pressure in the fuel delivery 116 is set or maintained.
  • the steps Sl to S3 can reconnect to the steps S4 and S5, so that the fuel pressure is approximately its desired value iteratively in dependence of the appropriate geän ⁇ derten current and the pump motor speed changes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Computer Hardware Design (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne un système de pompe à fluide (10) qui comprend un premier ensemble de pompe à fluide (100) qui est conçu pour recevoir un fluide par le biais d'une premier conduit d'alimentation en fluide (114) et à le délivrer par le biais d'un premier conduit d'évacuation de fluide (116) et un second ensemble de pompe à fluide (200), qui est conçu pour recevoir un fluide par le biais d'un second conduit d'alimentation en fluide (214) et à le délivrer par le biais d'un second conduit d'évacuation de fluide (216). Le premier ensemble de pompe à fluide (100) comprend : un premier dispositif de pompe (105) pourvu d'une première unité de pompe (110) et d'un premier moteur de pompe (120), le premier moteur de la pompe étant accouplé à la première unité de pompe (110) de sorte que le premier moteur de pompe peut entraîner la première unité de pompe ; une source d'énergie (130) destinée à alimenter le premier moteur de pompe (120) en courant ; et une unité de commande (140) qui est conçue pour lire une valeur de consigne d'une pression de fluide que doit délivrer le premier dispositif de pompe (105), déterminer une intensité de courant pour le premier moteur de pompe (120), qui correspond à la valeur de consigne de la pression de fluide à délivrer pour une vitesse de rotation prédéterminée du moteur de pompe, et commander la source d'énergie (130) pour que celle-ci délivre l'intensité de courant déterminée au premier moteur de pompe (120).
EP15781940.0A 2014-10-27 2015-10-20 Système de pompe a carburant et à fluide Withdrawn EP3212928A1 (fr)

Applications Claiming Priority (2)

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DE102014221871.3A DE102014221871A1 (de) 2014-10-27 2014-10-27 Fluid- und Kraftstoffpumpensystem
PCT/EP2015/074238 WO2016066472A1 (fr) 2014-10-27 2015-10-20 Système de pompe a carburant et à fluide

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CN116146357B (zh) * 2023-02-27 2023-09-26 贵州航天林泉电机有限公司 一种电动燃油泵前馈控制方法

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US20120156057A1 (en) * 2010-12-17 2012-06-21 Aisan Kogyo Kabushiki Kaisha Fuel supply apparatus

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DE102009041236B4 (de) * 2009-09-11 2018-08-16 Daimler Ag Antriebsstrangvorrichtung
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DE102014221871A1 (de) 2016-04-28

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