EP3055568A1 - Pump - Google Patents

Pump

Info

Publication number
EP3055568A1
EP3055568A1 EP14783800.7A EP14783800A EP3055568A1 EP 3055568 A1 EP3055568 A1 EP 3055568A1 EP 14783800 A EP14783800 A EP 14783800A EP 3055568 A1 EP3055568 A1 EP 3055568A1
Authority
EP
European Patent Office
Prior art keywords
pump
electric motor
housing
fuel
pumping stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14783800.7A
Other languages
German (de)
French (fr)
Inventor
Marc VÖLKER
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 EP3055568A1 publication Critical patent/EP3055568A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/008—Enclosed motor pump units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0693—Details or arrangements of the wiring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
    • F02M2037/082—Details of the entry of the current supply lines into the pump housing, e.g. wire connectors, grommets, plugs or sockets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/803—Electric connectors or cables; Fittings therefor

Definitions

  • the invention relates to a pump with a housing in which an electric motor and at least one of a shaft of the electric motor driven pump stage are arranged, an inlet and an outlet, which are arranged on opposite sides of the pump, and connection lines for contacting the the electric motor.
  • Such pumps are known and used for conveying liquids and gases, in particular fuel in a motor vehicle.
  • the pumps can be arranged both inside and outside the fuel tank. Un ⁇ depending on the arrangement of the fuel through the inlet is sucked, is brought into the pump stage to the desired pressure level and supported by the electric motor to the outlet and connected thereto via a supply line to the internal combustion engine of the motor vehicle.
  • the contacting of the electric motor is effected by means of two connecting lines, which ⁇ are guided on the outlet side of the fuel pump in the electric motor ⁇ .
  • a disadvantage is that the sealing of the fuel pump in particular at the ducts requires considerable effort to prevent Per ⁇ meation and leaks.
  • the invention has for its object to provide a pump in which prevents leaks and permeation with little effort or at least significantly minimized.
  • connection lines being led to the electric motor via the inlet side of the pump.
  • the contacting of the electric motor of the invention is solved by the connection lines being led to the electric motor via the inlet side of the pump.
  • Fuel pump may be a passage of the connection lines or a plug connection on the inlet side of the pump.
  • connection lines in the pump requires a very little effort, if the connection lines are arranged on the housing inner wall. With this embodiment, a laying of the connecting lines by the electric motor and the pumping stage is avoided. A secure guidance of the connection lines within the
  • Housing is achieved in a further embodiment, characterized in that the housing of the pumping stage has a groove on its periphery and that the connecting lines are arranged in the groove.
  • the groove is axially aligned.
  • connection lines are guided through the pump housing of the pumping stage.
  • the pump housing is provided with a hole. This bore can also be designed such that they simultaneously for receiving the Seal is formed to seal the interior of the pump from the environment.
  • a smaller diameter of the pump housing and thus the pumping stage is achieved in that instead of a bore on the circumference of the pump housing of the pumping stage, a groove is present in which the connecting lines are arranged. This groove is also aligned axially in an advantageous manner.
  • the bore may be formed for receiving a plug.
  • Characterized the on ⁇ circuit lines can be guided from outside and can be contacted via a plug connection with the running inside the pump connection lines to the pump.
  • This split version of the connection lines has the advantage that the contacting of the electric motor can already be carried out in advance with the co ⁇ construction of the pump, while the contact with the energy supply at a later date, for example, the assembly of the pump in a container made.
  • the connecting lines to be laid in the pump can be shortened by arranging the electric motor between inlet and pumping stage according to an advantageous embodiment.
  • This embodiment allows a simplified assembly and less expensive production.
  • this embodiment allows the use of a known connection piece as the inlet end of the pump, so as to allow the contact but also the connection to the flow line.
  • the invention will be explained in more detail. It show in
  • FIG. 1 shows a pump according to the invention
  • FIGS. 2, 3 show further embodiments of the pump according to FIG. 1.
  • FIG. 1 shows a fuel pump 1 for conveying fuel from a fuel e financialer to the internal combustion engine of a motor vehicle, wherein the fuel pump 1 is disposed outside of the fuel tank.
  • the fuel pump 1 consists of a housing 2, in which an electric motor 3 and at least one of a shaft 4 of the electric motor 3 drivable pumping stage 4 are arranged.
  • the inlet 5 is connected via a feed line 7 with the fuel tank, not shown, so that the pumping stage 4 can suck in fuel.
  • the fuel is then conveyed by the electric motor 3 to the outlet 6 and from there via the feed line 7 to the internal combustion engine, also not shown.
  • the housing 8 of the electric motor 3 is sealed to the pump outlet of
  • connection lines 9 for contacting the electric motor 3 are guided laterally out of the housing 8 and to the inlet side of the fuel pump 1.
  • the connecting lines 9 are led out of the fuel pump 1.
  • the seal 10 is relatively simple, since in the region of the fuel pump 1, in which the connecting lines 9 extend, there is a significantly lower pressure than the delivery pressure applied to the outlet 6.
  • FIG. 2 shows a fuel pump 1 having an inlet 5 and an outlet 6.
  • the electric motor 3 is arranged on the inlet side and the pumping stage 4 is arranged on the outlet side of the fuel pump 1.
  • the inlet end of the fuel pump 1 forms a known from conventional fuel pumps fitting 11, the outlet serves as an inlet 5 in this embodiment.
  • the geometry of the cable ⁇ implementation is used in the form of a plug 12 with the difference that the seal in the connector 12 for carrying out the connecting lines 9 is made much simpler, since in this area of the fuel pump 1 is a significantly lesser Pressure prevails as the delivery pressure generated by the pumping stage 4. This is achieved by the direct and sealed connection of the outlet of the pump stage 4 with the outlet 6.
  • the fuel pump 1 in Fig. 3 corresponds substantially to the structure of FIG. 1.
  • the housing of the pumping stage 4 has at its periphery an axially extending groove thirteenth in which the connection lines are arranged ⁇ . 9

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The subject matter of the invention is a pump 1 with a housing 2, in which an electric motor 3 and at least one pump stage 4 that can be driven by a shaft of the electric motor 3 are arranged, an inlet 5 and an outlet 6 located on opposite sides of the pump 1, and connection lines 9 for contacting the electric motor 3. The connection lines 9 are led through the inlet side of the pump 1 to the electric motor 3.

Description

Beschreibung Pumpe Gegenstand der Erfindung ist eine Pumpe mit einem Gehäuse, in dem ein Elektromotor und mindestens eine von einer Welle des Elektromotors antreibbare Pumpstufe angeordnet sind, einem Einlass und einen Auslass, die auf gegenüberliegenden Seiten der Pumpe angeordnet sind, und Anschlussleitungen zur Kontakt ierung des Elektromotors. The invention relates to a pump with a housing in which an electric motor and at least one of a shaft of the electric motor driven pump stage are arranged, an inlet and an outlet, which are arranged on opposite sides of the pump, and connection lines for contacting the the electric motor.
Derartige Pumpen sind bekannt und werden zum Fördern von Flüssigkeiten und Gasen, insbesondere von Kraftstoff in einem Kraftfahrzeug benutzt. Die Pumpen können sowohl innerhalb als auch außerhalb des Kraftstoffbehälters angeordnet sein. Un¬ abhängig von der Anordnung wird der Kraftstoff über den Einlass angesaugt, in der Pumpstufe auf das gewünscht Druckniveau gebracht und durch den Elektromotor zum Auslass und über eine daran angeschlossene Vorlaufleitung zur Brennkraftmaschine des Kraftfahrzeugs gefördert. Die Kontaktierung des Elektromotors erfolgt mittels zweier Anschlussleitungen, welche auf der Auslassseite der Kraftstoffpumpe in den Elektromotor hinein¬ geführt sind. Nachteilig ist, dass zur Verhinderung von Per¬ meation und Leckagen die Abdichtung der Kraftstoffpumpe ins- besondere an den Durchführungen einen erheblichen Aufwand erfordert . Such pumps are known and used for conveying liquids and gases, in particular fuel in a motor vehicle. The pumps can be arranged both inside and outside the fuel tank. Un ¬ depending on the arrangement of the fuel through the inlet is sucked, is brought into the pump stage to the desired pressure level and supported by the electric motor to the outlet and connected thereto via a supply line to the internal combustion engine of the motor vehicle. The contacting of the electric motor is effected by means of two connecting lines, which ¬ are guided on the outlet side of the fuel pump in the electric motor ¬ . A disadvantage is that the sealing of the fuel pump in particular at the ducts requires considerable effort to prevent Per ¬ meation and leaks.
Der Erfindung liegt die Aufgabe zugrunde, eine Pumpe zu schaffen, bei der Leckagen und Permeation mit geringem Aufwand verhindert oder zumindest deutlich minimiert werden. The invention has for its object to provide a pump in which prevents leaks and permeation with little effort or at least significantly minimized.
Gelöst wird die Aufgabe dadurch, dass die Anschlussleitungen über die Einlassseite der Pumpe zum Elektromotor geführt sind. Die Kontaktierung des Elektromotors der erfindungsgemäßenThe problem is solved by the connection lines being led to the electric motor via the inlet side of the pump. The contacting of the electric motor of the invention
Kraftstoffpumpe kann eine Durchführung der Anschlussleitungen oder eine Steckerverbindung an der Einlassseite der Pumpe sein. Mit dem Verlegen der Kontaktierung auf die Saugseite der Pumpe wird der auf die Kontaktierung wirkende Differenzdruck zwischen Aussendruck und Pumpeninnendruck reduziert, da die Kontaktierung nicht mit an der Auslassseite angeordnet ist, wo der von der Pumpe erzeugte Betriebsdruck anliegt. Aufgrund des geringeren Dif¬ ferenzdrucks sinkt der Aufwand für die Abdichtung im Bereich der Kontaktierung bei gleichbleibend guter oder verbesserter Abdichtung, wodurch die Pumpe kostengünstiger zu fertigen ist. Durch die verbesserte Abdichtung ist es möglich die Emissi- onswerte einer solchen Kraftstoffpumpe zu senken. Andererseits erlaubt die verbesserte Abdichtung das Betreiben der Kraft¬ stoffpumpe mit einem höheren Betriebsdruck. Fuel pump may be a passage of the connection lines or a plug connection on the inlet side of the pump. By laying the contact on the suction side of the pump, the pressure acting on the contact pressure differential between the external pressure and pump internal pressure is reduced, since the contact is not located on the outlet side, where the operating pressure generated by the pump is applied. Due to the lower Dif ¬ ferenzdrucks the cost of the seal in the area of contact decreases with consistently good or improved sealing, making the pump is cheaper to manufacture. The improved sealing makes it possible to lower the emission values of such a fuel pump. On the other hand, the improved sealing allows the operation of the power ¬ fuel pump with a higher operating pressure.
Das Verlegen der Anschlussleitungen in der Pumpe erfordert einen sehr geringen Aufwand, wenn die Anschlussleitungen an der Gehäuseinnenwand angeordnet sind. Mit dieser Ausgestaltung wird ein Verlegen der Anschlussleitungen durch den Elektromotor und die Pumpstufe vermieden. Eine sichere Führung der Anschlussleitungen innerhalb desThe laying of the connecting lines in the pump requires a very little effort, if the connection lines are arranged on the housing inner wall. With this embodiment, a laying of the connecting lines by the electric motor and the pumping stage is avoided. A secure guidance of the connection lines within the
Gehäuses wird in einer weiteren Ausgestaltung dadurch erreicht, dass das Gehäuse der Pumpstufe an seinem Umfang eine Nut besitzt und dass die Anschlussleitungen in der Nut angeordnet sind. Im einfachsten Fall ist die Nut axial ausgerichtet. Housing is achieved in a further embodiment, characterized in that the housing of the pumping stage has a groove on its periphery and that the connecting lines are arranged in the groove. In the simplest case, the groove is axially aligned.
In gleicher Weise ist es möglich, im Stator des Elektromotors eine derartige Führung vorzusehen. Dies ist insbesondere dann mit geringem Aufwand verbunden, wenn eine derartige Führung beispielsweise im zum Elektromotor gehörenden Rückschlusskörper angeordnet ist. Es ist aber auch denkbar, bereits vorhandene Spalten oder Rücksprünge für die Anordnung der Anschlusslei¬ tungen zu nutzen. In the same way it is possible to provide such a guide in the stator of the electric motor. This is particularly associated with little effort when such a guide is arranged for example in the electric motor belonging to the return body. But it is also conceivable to use existing columns or recesses for the arrangement of the Anschlußlei ¬ lines.
In einer anderen Ausgestaltung sind die Anschlussleitungen durch das Pumpengehäuse der Pumpstufe geführt. Das Pumpengehäuse ist dazu mit einer Bohrung versehen. Diese Bohrung kann zudem derart ausgebildet sein, dass sie gleichzeitig für die Aufnahme der Dichtung ausgebildet ist, um die das Innere der Pumpe gegen die Umgebung abzudichten. In another embodiment, the connection lines are guided through the pump housing of the pumping stage. The pump housing is provided with a hole. This bore can also be designed such that they simultaneously for receiving the Seal is formed to seal the interior of the pump from the environment.
Ein geringerer Durchmesser des Pumpengehäuses und damit der Pumpstufe wird dadurch erreicht, dass anstelle einer Bohrung am Umfang des Pumpengehäuses der Pumpstufe eine Nut vorhanden ist, in der die Anschlussleitungen angeordnet sind. Auch diese Nut ist in vorteilhafter Weise axial ausgerichtet. In einer anderen Ausgestaltung kann die Bohrung zur Aufnahme eines Steckers ausgebildet sein. Dadurch können die An¬ schlussleitungen von außerhalb bis zur Pumpe geführt werden und über eine Steckverbindung mit den im Innern der Pumpe verlaufenden Anschlussleitungen kontaktiert werden. Diese geteilte Ausführung der Anschlussleitungen hat den Vorteil, dass die Kontaktierung des Elektromotors bereits vorab mit dem Zusam¬ menbau der Pumpe erfolgen kann, während die Kontakt ierung mit der Energieversorgung zu einem späteren Zeitpunkt, beispielsweise der Montage der Pumpe in einem Behälter, vorgenommen wird. A smaller diameter of the pump housing and thus the pumping stage is achieved in that instead of a bore on the circumference of the pump housing of the pumping stage, a groove is present in which the connecting lines are arranged. This groove is also aligned axially in an advantageous manner. In another embodiment, the bore may be formed for receiving a plug. Characterized the on ¬ circuit lines can be guided from outside and can be contacted via a plug connection with the running inside the pump connection lines to the pump. This split version of the connection lines has the advantage that the contacting of the electric motor can already be carried out in advance with the co ¬ construction of the pump, while the contact with the energy supply at a later date, for example, the assembly of the pump in a container made.
Die in der Pumpe zu verlegenden Anschlussleitungen lassen sich verkürzen, indem gemäß einer vorteilhaften Ausgestaltung der Elektromotor zwischen Einlass und Pumpstufe angeordnet ist. Diese Ausgestaltung erlaubt eine vereinfachte Montage und kostengünstigere Fertigung. Zudem erlaubt diese Ausgestaltung die Verwendung eines an sich bekannten Anschlussstücks als einlassseitigen Abschluss der Pumpe, um so die Kontaktierung aber auch die Verbindung mit der Vorlaufleitung zu ermöglichen. An mehreren Ausführungsbeispielen wird die Erfindung näher erläutert. Es zeigen in The connecting lines to be laid in the pump can be shortened by arranging the electric motor between inlet and pumping stage according to an advantageous embodiment. This embodiment allows a simplified assembly and less expensive production. In addition, this embodiment allows the use of a known connection piece as the inlet end of the pump, so as to allow the contact but also the connection to the flow line. In several embodiments, the invention will be explained in more detail. It show in
Fig. 1 eine erfindungsgemäße Pumpe, Fig. 2, 3 weitere Ausführungsformen der Pumpe nach Fig. 1. „ 1 shows a pump according to the invention, FIGS. 2, 3 show further embodiments of the pump according to FIG. 1. "
Figur 1 zeigt eine Kraftstoffpumpe 1 zum Fördern von Kraftstoff aus einem Kraftstoff ehälter zur Brennkraftmaschine eines Kraftfahrzeugs, wobei die Kraftstoffpumpe 1 außerhalb des Kraftstoffbehälters angeordnet ist. Die Kraftstoffpumpe 1 besteht aus einem Gehäuse 2, in dem ein Elektromotor 3 und mindestens eine von einer Welle 4 des Elektromotors 3 antreibbare Pumpstufe 4 angeordnet sind. Auf gegenüberliegenden Seiten der Kraftstoffpumpe 1 sind ein Einlass 5 und einen Auslass 6 an¬ geordnet. Der Einlass 5 ist über eine Vorlaufleitung 7 mit dem nicht dargestellten Kraftstoffbehälter verbunden, so dass die Pumpstufe 4 darüber Kraftstoff ansaugen kann. Von der Pumpstufe 4 wird der Kraftstoff anschließend durch den Elektromotor 3 zum Auslass 6 und von dort über die Vorlaufleitung 7 zur ebenfalls nicht dargestellten Brennkraftmaschine gefördert. Das Gehäuse 8 des Elektromotors 3 ist dicht mit dem Pumpenauslass derFigure 1 shows a fuel pump 1 for conveying fuel from a fuel ehälter to the internal combustion engine of a motor vehicle, wherein the fuel pump 1 is disposed outside of the fuel tank. The fuel pump 1 consists of a housing 2, in which an electric motor 3 and at least one of a shaft 4 of the electric motor 3 drivable pumping stage 4 are arranged. On opposite sides of the fuel pump 1, an inlet 5 and an outlet 6 are arranged on ¬ . The inlet 5 is connected via a feed line 7 with the fuel tank, not shown, so that the pumping stage 4 can suck in fuel. From the pumping stage 4, the fuel is then conveyed by the electric motor 3 to the outlet 6 and from there via the feed line 7 to the internal combustion engine, also not shown. The housing 8 of the electric motor 3 is sealed to the pump outlet of
Pumpstufe 4 und dem Auslass 6 verbunden, so dass von der Pumpstufe 4 geförderter Kraftstoff über den Elektromotor 3 direkt zum Auslass 6 gelangt . Die Anschlussleitungen 9 zur Kontaktierung des Elektromotors 3 sind seitlich aus dem Gehäuse 8 heraus und zur Einlassseite der Kraftstoffpumpe 1 geführt. Über eine Dichtung 10 sind die Anschlussleitungen 9 aus der Kraftstoffpumpe 1 herausgeführt. Die Dichtung 10 ist relativ einfach ausgeführt, da in dem Bereich der Kraftstoffpumpe 1, in dem die Anschlussleitungen 9 verlaufen, ein deutlich geringer Druck als der am Auslass 6 anliegende Förderdruck herrscht. Pumping stage 4 and the outlet 6 connected so that funded by the pumping stage 4 fuel passes through the electric motor 3 directly to the outlet 6. The connection lines 9 for contacting the electric motor 3 are guided laterally out of the housing 8 and to the inlet side of the fuel pump 1. About a seal 10, the connecting lines 9 are led out of the fuel pump 1. The seal 10 is relatively simple, since in the region of the fuel pump 1, in which the connecting lines 9 extend, there is a significantly lower pressure than the delivery pressure applied to the outlet 6.
Fig. 2 zeigt eine Kraftstoffpumpe 1 mit einem Einlass 5 und einen Auslass 6. Im Unterschied zu Fig. 1 ist der Elektromotor 3 auf der Einlassseite und die Pumpstufe 4 auf der Auslassseite der Kraftstoffpumpe 1 angeordnet. Den einlassseitigen Abschluss der Kraftstoffpumpe 1 bildet ein von herkömmlichen Kraftstoffpumpen bekanntes Anschlussstück 11, deren Auslass in dieser Ausführung als Einlass 5 dient. Ebenso wird die Geometrie der Kabel¬ durchführung in Form eines Steckers 12 verwendet mit dem Un- terschied, dass die Dichtung im Stecker 12 zum Durchführen der Anschlussleitungen 9 deutlich einfacher ausgeführt ist, da in diesem Bereich der Kraftstoffpumpe 1 ein deutlich geringerer Druck herrscht als der von der Pumpstufe 4 erzeugte Förderdruck. Erreicht wird dies durch die direkte und dichte Verbindung des Auslasses der Pumpenstufe 4 mit dem Auslass 6. Die Kraftstoffpumpe 1 in Fig. 3 entspricht im Wesentlichen dem Aufbau nach Fig. 1. Das Gehäuse der Pumpstufe 4 besitzt an seinem Umfang eine axial verlaufende Nut 13, in der die Anschluss¬ leitungen 9 angeordnet sind. FIG. 2 shows a fuel pump 1 having an inlet 5 and an outlet 6. In contrast to FIG. 1, the electric motor 3 is arranged on the inlet side and the pumping stage 4 is arranged on the outlet side of the fuel pump 1. The inlet end of the fuel pump 1 forms a known from conventional fuel pumps fitting 11, the outlet serves as an inlet 5 in this embodiment. Likewise, the geometry of the cable ¬ implementation is used in the form of a plug 12 with the difference that the seal in the connector 12 for carrying out the connecting lines 9 is made much simpler, since in this area of the fuel pump 1 is a significantly lesser Pressure prevails as the delivery pressure generated by the pumping stage 4. This is achieved by the direct and sealed connection of the outlet of the pump stage 4 with the outlet 6. The fuel pump 1 in Fig. 3 corresponds substantially to the structure of FIG. 1. The housing of the pumping stage 4 has at its periphery an axially extending groove thirteenth in which the connection lines are arranged ¬. 9

Claims

Pumpe mit einem Gehäuse, in dem ein Elektromotor und mindestens eine von einer Welle des Elektromotors an¬ treibbare Pumpstufe angeordnet sind, einem Einlass und einen Auslass, die auf gegenüberliegenden Seiten der Pumpe angeordnet sind, und Anschlussleitungen zur Kontakt ierung des Elektromotors, d a d u r c h g e k e n n z e i c h n e t , dass die Anschlussleitungen (9) über die Einlassseite der Pumpe (1) zum Elektromotor (3) geführt sind. Pump having a housing, in which an electric motor and at least one of a shaft of the electric motor driven ¬ pumping stage are arranged, an inlet and an outlet, which are arranged on opposite sides of the pump, and connection lines for contacting the electric motor, characterized in that the connecting lines (9) via the inlet side of the pump (1) to the electric motor (3) are guided.
Pumpe nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass die Anschlussleitungen (9) in der Pumpe (1) an der Gehäuseinnenwand (2) angeordnet sind. Pump according to claim 1, characterized in that the connection lines (9) in the pump (1) on the housing inner wall (2) are arranged.
Pumpe nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , dass die Pumpstufe (4) ein Gehäuse aufweist, welches an seinem Umfang eine Nut (13) besitzt und dass die Anschlussleitungen (9) in der Nut (13) angeordnet sind . Pump according to claim 2, characterized in that the pumping stage (4) has a housing which has a groove (13) on its circumference and that the connection lines (9) are arranged in the groove (13).
Pumpe nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass die Pumpstufe (4) ein Pumpengehäuse aufweist und die Anschlussleitungen (9) durch das Pumpengehäuse geführt sind. Pump according to claim 1, characterized in that the pumping stage (4) has a pump housing and the connecting lines (9) are guided through the pump housing.
Pumpe nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der Elektromotor (3) zwischen Einlass (5) und Pumpstufe (4) angeordnet ist. Pump according to claim 1, characterized in that the electric motor (3) between the inlet (5) and pumping stage (4) is arranged.
EP14783800.7A 2013-10-10 2014-10-09 Pump Withdrawn EP3055568A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310220451 DE102013220451A1 (en) 2013-10-10 2013-10-10 pump
PCT/EP2014/071603 WO2015052266A1 (en) 2013-10-10 2014-10-09 Pump

Publications (1)

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EP3055568A1 true EP3055568A1 (en) 2016-08-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14783800.7A Withdrawn EP3055568A1 (en) 2013-10-10 2014-10-09 Pump

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US (1) US20160245245A1 (en)
EP (1) EP3055568A1 (en)
CN (1) CN105612349A (en)
DE (1) DE102013220451A1 (en)
WO (1) WO2015052266A1 (en)

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Publication number Priority date Publication date Assignee Title
US9932981B2 (en) * 2014-03-03 2018-04-03 Preferred Utilities Manufacturing Corporation Waterproof pump enclosure and system including same
DE102015119055B4 (en) * 2015-11-06 2019-05-09 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Hydro unit

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Publication number Priority date Publication date Assignee Title
JPH051674Y2 (en) * 1987-01-30 1993-01-18
JP4059416B2 (en) * 1999-04-20 2008-03-12 英男 林 Integrated motor pump
JP3973393B2 (en) * 2001-10-03 2007-09-12 株式会社川本製作所 Submersible pump for shallow well
EP1918567A1 (en) * 2006-10-27 2008-05-07 Delphi Technologies, Inc. Fuel delivery module
US20100229835A1 (en) * 2007-05-01 2010-09-16 Superpar Otomotiv Sanayi Ve Ticaret Anonim Sirketi Novelty in electric fuel pumps for internal combustion engines
JP5187089B2 (en) * 2007-09-26 2013-04-24 パナソニック株式会社 Inverter unit integrated electric compressor

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Title
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See also references of WO2015052266A1 *

Also Published As

Publication number Publication date
CN105612349A (en) 2016-05-25
DE102013220451A1 (en) 2015-04-16
US20160245245A1 (en) 2016-08-25
WO2015052266A1 (en) 2015-04-16

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