WO1990001636A1 - Device for supplying fuel from a tank to an internal combustion engine, a motor vehicle in particular - Google Patents

Device for supplying fuel from a tank to an internal combustion engine, a motor vehicle in particular Download PDF

Info

Publication number
WO1990001636A1
WO1990001636A1 PCT/DE1989/000511 DE8900511W WO9001636A1 WO 1990001636 A1 WO1990001636 A1 WO 1990001636A1 DE 8900511 W DE8900511 W DE 8900511W WO 9001636 A1 WO9001636 A1 WO 9001636A1
Authority
WO
WIPO (PCT)
Prior art keywords
pinion
gear
ring
pump
armature shaft
Prior art date
Application number
PCT/DE1989/000511
Other languages
German (de)
French (fr)
Inventor
Hermann Nusser
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to KR1019900700186A priority Critical patent/KR900702215A/en
Publication of WO1990001636A1 publication Critical patent/WO1990001636A1/en

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary pumps

Definitions

  • the invention relates to a device according to the preamble of the main claim.
  • a conveyor device is already known (US Pat. No. 4,596,519), in which the coupling means connected to the motor armature cooperate with the pinion of the pump.
  • the coupling means connected to the motor armature cooperate with the pinion of the pump.
  • the pinion must be mounted directly on the armature shaft.
  • Opposing demands are placed on the material of the pinion, because on the one hand the requirements of the gearing have to be taken into account, but on the other hand the needs of a suitable pinion bearing on the armature shaft have to be taken into account.
  • the conveyor device according to the invention with the characterizing features of the main claim has the advantage that the pinion bearing can be optimized.
  • the interaction of the coupling means with the gear pump gear ring is in the area of the pinion created space for improved pinion bearing.
  • the pinion can be made of an optimal material for its tasks, while the storage itself can be improved by the selection of sliding partners that are particularly favorable under the existing conditions.
  • FIG. 1 shows an out-of-scale basic illustration of a conveyor device according to the invention, with a conveyor assembly shown partially in section, and FIG. 2 shows a section through the conveyor assembly along the line II-II.
  • a delivery device shown in FIG. 1 has a fuel storage tank 10 in which a delivery unit 12 is accommodated.
  • the delivery unit 12 has an intake port 14 through which it draws in the fuel. Via a pressure connection 16, the fuel is conveyed into a pressure line 18, through which the fuel reaches the internal combustion engine 20 of a motor vehicle, not shown.
  • the fuel delivery unit 12 has an electric drive motor 22, the armature shaft 24 of which is somewhat extended.
  • a feed member of a pre-feed pump 26 is attached to the armature shaft 24.
  • the prefeed pump 26 is designed as a side channel pump, the side channel 28 of which is accommodated in a cover plate 30.
  • the fuel delivery unit 12 In the direction of fuel delivery (Arrow 31) seen behind the pre-feed pump 26, the fuel delivery unit 12 has a base plate 32, in the central region of which an eccentric bushing 34 is fastened.
  • the extension of the armature shaft 24 of the electric drive motor 22 is mounted in the bore of the eccentric bushing 34. This extension passes through the eccentric bush 34 and the free end emerging therefrom carries the conveying member of the pre-feed pump 26.
  • a carbon bush 38 sits in the pinion 40, the bore wall of which forms a bearing for a pinion 40.
  • the pinion 40 thus surrounds the armature shaft 24 of the drive motor 22.
  • the ring gear arranged on the circumference of the pinion meshes with an internal toothing of a toothed ring 42, the outer lateral surface of which is guided on the bore wall of a guide ring 44.
  • the guide ring 44 itself is firmly connected to the base plate 32 via two fastening screws 46.
  • the suction side of this so-called internal gear or gerotor pump is connected to the pressure side of the prefeed pump 26.
  • a pressure or outlet channel 48 of the gerotor pump acting as a pressure stage is arranged in the base plate 32 (FIG. 2). Both the electric drive motor 22 and the two pump stages 26 and 40, 42 are surrounded by a common housing 50.
  • the outlet channel 48 of the pressure stage 40, 42 opens into this housing, which - from the base plate 32 simultaneously takes over the function of a pressure line.
  • the fuel then reaches the pressure line 18, which leads to the internal combustion engine 20, via the pressure connection 16 of the delivery unit 12.
  • a coupling body 52 is connected in a rotationally fixed manner to the motor armature 23 and merges into a flange-like section 54 at its area facing the internal gear pump 40, 42.
  • three driver pins 56 are arranged on this flange-like section, which are located at a distance from the axis of rotation of the armature shaft 24 of the drive motor 22 and extend parallel to the latter.
  • Each of these driver pins 56 has a receiving bore 58 in the toothed ring 42 assigned to the internal gear pump 40, 42. This means that each driver pin 56 engages in its receptacle 58 in the driving operating position shown in FIG.
  • the toothed ring 42 is carried along.
  • the toothed ring 42 thus rotates in its guidance in the guide ring 44, the internal toothing of the toothed ring 42 meshing with the external toothing of the toothed pinion 40.
  • a sealing ring 60 preferably made of Teflon, is arranged on the end face of the eccentric bushing 34 facing the drive motor, which sealing ring 60 has this annular gap covers.
  • the driver pins 56 are thus located on a pitch circle, which is opposite the toothed ring 42. This results in the area of the tooth support Ritzeis 40 enough space for the arrangement of a carbon bushing 38 and also the eccentric bushing 34, through which a particularly space-saving construction of the internal gear pump 40, 42 is achieved. Due to the special mounting of the pinion 40, the pinion 40 can now be made of a material which is entirely based on the requirement of the pinion 40. In the exemplary embodiment, the carbon bushing 38 is now arranged as a sliding partner, but this in turn only has to be matched to the requirements imposed on proper storage.
  • the coupling means present between the drive motor 22 and the gear pump 40, 42 are on the one hand firmly connected to the armature of the electric motor and on the other hand non-rotatably connected to the toothed ring 42 of the gerotor pump 40, 42.

Abstract

Said device includes a feeding unit comprising an electrical driving engine and a gear pump designed as a gerotor pump and actuated directly by the driving engine; the pinion of said gear pump is arranged eccentrically within an annular internal gear enclosing the pinion, its gear ring enclosing the armature shaft, whereby the gear ring of the pinion engages the inner gear ring of the annular gear, the outer casing of the annular gear is arranged on the inner casing of a ring fixed on the frame and the rotary drive between driving engine and gear pump is effected via coupling means. In order to obtain more room for properly lodging the pinion in the area where it rests on the armature shaft of the electromotor, the coupling means are linked on the one hand in a fixed manner with the rotor of the electromotor and on the other hand in a rotationally fixed manner with the annular gear of the gerotor.

Description

Vorrichtung zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine, insbesondere eines Kraftfahrzeuges Device for conveying fuel from a storage tank to the internal combustion engine, in particular a motor vehicle
Stand der Technik State of the art
Die Erfindung geht aus von einer Fordervorrichtung nach der Gattung des Hauptanspruchs. Es ist schon eine solche Fördervorrichtung bekannt (US-PS 45 96 519), bei der die mit dem Motoranker verbundenen Kupplungsmittel mit dem Zahnritzel der Pumpe zusammenarbeiten. Dadurch ist im Zahnritzel kein Raum für die Anordnung einer Lagerbuchse, so daß das Zahnritzel direkt auf der Ankerwelle gelagert werden muß. An das Material des Ritzels werden dabei einander entgegenlaufende Forderungen gestellt, weil einmal den Anforderungen der Verzahnung Rechnung getragen werden muß, andererseits aber auch die Belange einer zweckmäßigen Ritzellagerung auf der Ankerwelle zu berücksichtigen sind. The invention relates to a device according to the preamble of the main claim. Such a conveyor device is already known (US Pat. No. 4,596,519), in which the coupling means connected to the motor armature cooperate with the pinion of the pump. As a result, there is no space in the pinion for the arrangement of a bearing bush, so that the pinion must be mounted directly on the armature shaft. Opposing demands are placed on the material of the pinion, because on the one hand the requirements of the gearing have to be taken into account, but on the other hand the needs of a suitable pinion bearing on the armature shaft have to be taken into account.
Vorteile der Erfindung Advantages of the invention
Die erfindungsgemäße Fördervorrichtung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß die Ritzellagerung optimiert werden kann. Durch das Zusammenwirken der Kupplungsmittel mit dem Zahnring der Zahnradpumpe wird im Bereich des Zahnritzels Raum für eine verbesserte Ritzellagerung geschaffen. Somit kann das Zahnritzel aus einem für dessen Aufgaben optimalen Material gefertigt werden, während die Lagerung selbst durch die Auswahl von bei den vorhandenen Bedingungen besonders günstiger Gleitpartner verbessert werden kann. The conveyor device according to the invention with the characterizing features of the main claim has the advantage that the pinion bearing can be optimized. The interaction of the coupling means with the gear pump gear ring is in the area of the pinion created space for improved pinion bearing. Thus, the pinion can be made of an optimal material for its tasks, while the storage itself can be improved by the selection of sliding partners that are particularly favorable under the existing conditions.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Fördervorrichtung möglich. Advantageous further developments and improvements of the conveyor device specified in the main claim are possible through the measures listed in the subclaims.
Zeichnung drawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine unmaßstäbliche Prinzipdarstellung einer erfindungsgemäßen Fördervorrichtung, mit einem teilweise geschnitten gezeichneten Förderaggregat und Figur 2 einen Schnitt durch das Förderaggregat entlang der Linie II-II. An embodiment of the invention is shown in the drawing and explained in more detail in the following description. FIG. 1 shows an out-of-scale basic illustration of a conveyor device according to the invention, with a conveyor assembly shown partially in section, and FIG. 2 shows a section through the conveyor assembly along the line II-II.
Beschreibung des Ausführungsbeispiels Description of the embodiment
Eine in Figur 1 dargestellte Fördervorrichtung weist einen Kraftstoffvorratstank 10 auf, in dem ein Förderaggregat 12 untergebracht ist. Das Förderaggregat 12 hat einen Ansaugstutzen 14 über den es den Kraftstoff ansaugt. Über einen Druckstutzen 16 wird der Kraftstoff in eine Druckleitung 18 gefördert, durch die dieser in die Brennkraftmaschine 20 eines nicht näher dargestellten Kraftfahrzeuges gelangt. Das Kraftstofförderaggregat 12 weist einen elektrischen Antriebsmotor 22 auf, dessen Ankerwelle 24 etwas verlängert ist. An dem freien Ende ist an der Ankerwelle 24 ein Förderglied einer vorförderpumpe 26 befestigt. Die vorförderpumpe 26 ist als Seitenkanalpumpe ausgebildet, deren Seitenkanal 28 in einer Abdeckplatte 30 untergebracht ist. In Förderrichtung des Kraftstoffs (Pfeil 31) gesehen hinter der Vorförderpumpe 26 weist das Kraftstofförderaggregat 12 eine Grundplatte 32 auf, in deren Mittelbereich eine Exzenterbuchse 34 befestigt ist. In der Bohrung der Exzenterbuchse 34 ist die Verlängerung der Ankerwelle 24 des elektrischen Antriebsmotors 22 gelagert. Diese Verlängerung durchsetzt die Exzenterbuchse 34 und das aus dieser heraustretende freie Ende trägt das Förderglied der Vorförderpumpe 26. Im Zahnritzel 40 sitzt eine Kohlebuchse 38, deren Bohrungswand eine Lagerstelle für ein Zahnritzel 40 bildet. Das Zahnritzel 40 umgibt also die Ankerwelle 24 des Antriebsmotors 22. Der am Umfang des Zahnritzels angeordnete Zahnkranz kämmt mit einer Innenverzahnung eines Zahnrings 42, dessen äußere Mantelfläche an der Bohrungswand eines Führungsrings 44 geführt ist. Der Führungsring 44 selbst ist über zwei Befestigungsschrauben 46 fest mit der Grundplatte 32 verbunden. Die Saugseite dieser sogenannten Innenzahnrad- oder Gerotorpumpe ist mit der Druckseite der Vorförderpumpe 26 verbunden. Ein Druck- oder Auslaßkanal 48 der als Druckstufe wirkenden Gerotorpumpe ist in der Grundplatte 32 angeordnet (Figur 2). Sowohl der elektrische Antriebsmotor 22 als auch die beiden Pumpenstufen 26 bzw. 40, 42 sind von einem gemeinsamen Gehäuse 50 umgeben. Der Auslaßkanal 48 der Druckstufe 40, 42 mündet in dieses Gehäuse, das - ab der Grundplatte 32 gleichzeitig die Funktion einer Druckleitung übernimmt. Über den Druckstutzen 16 des Förderaggregats 12 gelangt der Kraftstoff dann in die Druckleitung 18, welche zur Brennkraftmaschine 20 führt. A delivery device shown in FIG. 1 has a fuel storage tank 10 in which a delivery unit 12 is accommodated. The delivery unit 12 has an intake port 14 through which it draws in the fuel. Via a pressure connection 16, the fuel is conveyed into a pressure line 18, through which the fuel reaches the internal combustion engine 20 of a motor vehicle, not shown. The fuel delivery unit 12 has an electric drive motor 22, the armature shaft 24 of which is somewhat extended. At the free end, a feed member of a pre-feed pump 26 is attached to the armature shaft 24. The prefeed pump 26 is designed as a side channel pump, the side channel 28 of which is accommodated in a cover plate 30. In the direction of fuel delivery (Arrow 31) seen behind the pre-feed pump 26, the fuel delivery unit 12 has a base plate 32, in the central region of which an eccentric bushing 34 is fastened. The extension of the armature shaft 24 of the electric drive motor 22 is mounted in the bore of the eccentric bushing 34. This extension passes through the eccentric bush 34 and the free end emerging therefrom carries the conveying member of the pre-feed pump 26. A carbon bush 38 sits in the pinion 40, the bore wall of which forms a bearing for a pinion 40. The pinion 40 thus surrounds the armature shaft 24 of the drive motor 22. The ring gear arranged on the circumference of the pinion meshes with an internal toothing of a toothed ring 42, the outer lateral surface of which is guided on the bore wall of a guide ring 44. The guide ring 44 itself is firmly connected to the base plate 32 via two fastening screws 46. The suction side of this so-called internal gear or gerotor pump is connected to the pressure side of the prefeed pump 26. A pressure or outlet channel 48 of the gerotor pump acting as a pressure stage is arranged in the base plate 32 (FIG. 2). Both the electric drive motor 22 and the two pump stages 26 and 40, 42 are surrounded by a common housing 50. The outlet channel 48 of the pressure stage 40, 42 opens into this housing, which - from the base plate 32 simultaneously takes over the function of a pressure line. The fuel then reaches the pressure line 18, which leads to the internal combustion engine 20, via the pressure connection 16 of the delivery unit 12.
Damit eine ordnungsgemäße Drehmitnahme zwischen dem Elektromotor 22 und der Gerotorpumpe 40, 42 sichergestellt ist, ist mit dem Motoranker 23 ein Kupplungskörper 52 drehfest verbunden, der an seinem der Innenzahnradpumpe 40, 42 zugewandten Bereich in einen flanschartigen Abschnitt 54 übergeht. An diesem flanschartigen Abschnitt sind im Ausführungsbeispiel drei Mitnehmerzapfen 56 angeordnet, die sich mit Abstand von der Drehachse der Ankerwelle 24 des Antriebsmotors 22 befinden und sich parallel zu dieser erstrecken. Jedem dieser Mitnehmerzapfen 56 ist eine Aufnahmebohrung 58 im Zahnring 42 der Innenzahnradpumpe 40, 42 zugeordnet. Das heißt, daß jeder Mitnehmerzapfen 56 in der in Figur 1 gezeigten Mitnahme-Betriebsstellung in seine Aufnahme 58 greift, so daß bei drehendem Motoranker 23 der Zahnring 42 mitgenommen wird. Der Zahnring 42 dreht sich somit in seiner Führung im Führungsring 44, wobei die Innenverzahnung des Zahnrings 42 mit der Außenverzahnung des Zahnritzels 40 kämmt. In order to ensure proper rotational driving between the electric motor 22 and the gerotor pump 40, 42, a coupling body 52 is connected in a rotationally fixed manner to the motor armature 23 and merges into a flange-like section 54 at its area facing the internal gear pump 40, 42. In the exemplary embodiment, three driver pins 56 are arranged on this flange-like section, which are located at a distance from the axis of rotation of the armature shaft 24 of the drive motor 22 and extend parallel to the latter. Each of these driver pins 56 has a receiving bore 58 in the toothed ring 42 assigned to the internal gear pump 40, 42. This means that each driver pin 56 engages in its receptacle 58 in the driving operating position shown in FIG. 1, so that when the motor armature 23 rotates, the toothed ring 42 is carried along. The toothed ring 42 thus rotates in its guidance in the guide ring 44, the internal toothing of the toothed ring 42 meshing with the external toothing of the toothed pinion 40.
Dadurch wird auch eine Drehmitnahme des Zahnritzels 40 bewirkt, das sich somit auf der Exzenterbuchse 34 dreht. Damit über den Lagerspalt zwischen der inneren Mantelfläche der Exzenterbuchse 34 und der Ankerwelle 24 keine Leckage von der Hochdruckseite zur Niederdruckseite des Förderaggregats stattfinden kann, ist an der dem Antriebsmotor 22 zugewandten Stirnseite der Exzenterbuchse 34 ein vorzugsweise aus Teflon gefertigter Dichtungsring 60 angeordnet, welcher diesen Ringspalt abdeckt. Schließlich befindet sich noch zwischen dem Kupplungskörper 52 und der Innenzahnradpumpe 40, 42 eine Druckscheibe 62, welche in Achsrichtung gesehen, die zwischen den Verzahnungen der beiden Pumpengliedern 40, 42 vorhandenen This also causes the pinion 40 to be rotated, which thus rotates on the eccentric bushing 34. So that no leakage can take place from the high pressure side to the low pressure side of the delivery unit via the bearing gap between the inner circumferential surface of the eccentric bushing 34 and the armature shaft 24, a sealing ring 60, preferably made of Teflon, is arranged on the end face of the eccentric bushing 34 facing the drive motor, which sealing ring 60 has this annular gap covers. Finally, between the coupling body 52 and the internal gear pump 40, 42 there is a thrust washer 62, which, seen in the axial direction, exists between the teeth of the two pump members 40, 42
Förderkammern der Innenzahnradpumpe abdeckt, damit sich allseitig geschlossene Pumpkammern ergeben. Eine als Druckfeder ausgebildete Schraubenfeder 64, die sich vorgespannt am Kupplungskörper 52 abstützt und an der diesem zugewandten Stirnfläche der Druckscheibe 62 anliegt, sorgt für die erforderliche Abdichtung, solange sich noch kein hydraulischer Druck in der Pumpe aufgebaut hat. Da der elektrische Antriebsmotor 52 als Plankollektormotor aufgebaut ist, und die an der Planfläche des nicht dargestellten Kollektors angelegten Kohlebürsten entgegen der Förderrichtung (Pfeil 31) belastet sind, wird der gesamte Motoranker 23 des Elektromotors 22 in diese Richtung verschoben, wobei der Kupplungskörper 52 an dem Dichtungsring 60 zur Anlage kommt und auch dort für eine ordnungsgemäße, dichtende Anlage des Rings an der Exzenterbuchse 34 sorgt. Die Mitnehmerzapfen 56 befinden sich somit auf einem Teilkreis, welcher dem Zahnring 42 gegenüberliegt. Somit ergibt sich im Bereich der Lagerung des Zahn ritzeis 40 genügend Raum für die Anordnung einer Kohlebuchse 38 und auch der Exzenterbuchse 34, durch welche ein besonders platzsparender Aufbau der Innenzahnradpumpe 40, 42 erreicht wird. Durch die besondere Lagerung des Zahnritzels 40 kann dieses nun aus einem Material gefertigt werden, was ganz alleine auf die Forderung des Zahnritzels 40 abgestellt ist. Als Gleitpartner ist beim Ausführungsbeispiel nun die Kohlebuchse 38 angeordnet, die aber ihrerseits lediglich auf die an eine ordnungsgemäße Lagerung gestellten Anforderungen abgestimmt sein muß. Dazu ist es wesentlich, daß die zwischen dem Antriebsmotor 22 und der Zahnradpumpe 40, 42 vorhandene Kupplungsmittel einerseits fest mit dem Anker des Elektromotors und andererseits drehfest mit dem Zahnring 42 der Gerotorpumpe 40, 42 verbunden sind. Pump chambers of the internal gear pump covers, so that there are closed pump chambers on all sides. A helical spring 64 in the form of a compression spring, which is pretensioned and supported on the coupling body 52 and bears on the end face of the pressure disk 62 facing it, provides the required sealing as long as no hydraulic pressure has yet built up in the pump. Since the electric drive motor 52 is constructed as a flat collector motor, and the carbon brushes placed on the flat surface of the collector, not shown, are loaded against the conveying direction (arrow 31), the entire motor armature 23 of the electric motor 22 is displaced in this direction, with the coupling body 52 on the Sealing ring 60 comes to rest and also ensures proper, sealing contact of the ring with the eccentric bushing 34 there. The driver pins 56 are thus located on a pitch circle, which is opposite the toothed ring 42. This results in the area of the tooth support Ritzeis 40 enough space for the arrangement of a carbon bushing 38 and also the eccentric bushing 34, through which a particularly space-saving construction of the internal gear pump 40, 42 is achieved. Due to the special mounting of the pinion 40, the pinion 40 can now be made of a material which is entirely based on the requirement of the pinion 40. In the exemplary embodiment, the carbon bushing 38 is now arranged as a sliding partner, but this in turn only has to be matched to the requirements imposed on proper storage. For this purpose, it is essential that the coupling means present between the drive motor 22 and the gear pump 40, 42 are on the one hand firmly connected to the armature of the electric motor and on the other hand non-rotatably connected to the toothed ring 42 of the gerotor pump 40, 42.
Ein weiterer Vorteil der erfindungsgemäßen Anordnung ist darin zu sehen, daß bei gleicher Förderleitung die Drehzahl des Antriebsmotors 22 gegenüber dem bei dem bekannten Förderaggregat reduziert werden kann. Another advantage of the arrangement according to the invention can be seen in the fact that, with the same delivery line, the speed of the drive motor 22 can be reduced compared to that in the known delivery unit.

Claims

Ansprüche Expectations
1. Vorrichtung zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine, insbesondere eines Kraftfahrzeugs, mit einem Förderaggregat, das einen elektrischen Antriebsmotor und eine mit diesem wirkverbundene, als Gerotorpumpe ausgebildete Zahnradpumpe aufweist, deren Zahnritzel mit dem Zahnkranz die Ankerwelle umgebend exzentrisch innerhalb eines das Ritzel umfangenden, innenverzahnten Zahnrings angeordnet ist, wobei der Zahnkranz des Zahnritzels mit dem Innenzahnkranz des Zahnrings kämmt, der Zahnring an seinem Außenmantel am Innenmantel eines gestellfesten Rings geführt ist und Kupplungsmittel für eine Drehmitnahme zwischen dem Antriebsmotor und der Zahnradpumpe sorgen, dadurch gekennzeichnet, daß die Kupplungsmittel (56, 58) einerseits fest mit dem Anker (23) des Elektromotors (22) und andererseits drehfest mit dem Zahnring (42) der Gerotorpumpe (40, 42) verbunden sind. 1.Device for conveying fuel from a storage tank to the internal combustion engine, in particular a motor vehicle, with a delivery unit which has an electric drive motor and a gear pump which is operatively connected to it and is designed as a gerotor pump, the pinion of which, with the ring gear, surrounds the armature shaft eccentrically within one of the pinion circumferential, internally toothed gear ring is arranged, the toothed ring of the pinion meshing with the inner ring gear of the toothed ring, the toothed ring is guided on its outer jacket on the inner jacket of a ring fixed to the frame and coupling means ensure rotational entrainment between the drive motor and the gear pump, characterized in that the coupling means (56, 58) on the one hand are firmly connected to the armature (23) of the electric motor (22) and on the other hand are connected to the toothed ring (42) of the gerotor pump (40, 42) in a rotationally fixed manner.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kupplungsmittel einen auf der Ankerwelle (24) sitzenden Kupplungskörper (52) aufweisen, von dem aus sich wenigstens ein mit Abstand von der Drehachse der Ankerwelle (24) befindlicher Mitnehmerzapfen (56) parallel zur Drehachse erstreckt und in eine diesem zugeordnete Aufnahme (58) des Zahnrings (42) greift. 2. Device according to claim 1, characterized in that the coupling means have a coupling body (52) seated on the armature shaft (24), from which there is at least one driving pin (56) located at a distance from the axis of rotation of the armature shaft (24) parallel to The axis of rotation extends and engages in a receptacle (58) of the toothed ring (42) assigned to it.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß an dem Kupplungskörper (52) zumindest drei auf einem gemeinsamen Teilkreis befindliche Mitnehmerzapfen (56) angeordnet sind. 3. Apparatus according to claim 2, characterized in that at least three driving pins (56) located on a common pitch circle are arranged on the coupling body (52).
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Zahnritzel (40) auf einer gestellfesten Exzenterbuchse (34) drehbar gelagert ist. 4. Device according to one of claims 1 to 3, characterized in that the pinion (40) on a frame-fixed eccentric bush (34) is rotatably mounted.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß zwischen der Exzenterbuchse (34) und der Bohrung des Zahnritzels (40) eine aus Kohle gefertigte Zylinderbuchse (38) angeordnet ist. 5. The device according to claim 4, characterized in that between the eccentric bushing (34) and the bore of the pinion (40), a cylinder bushing (38) made of carbon is arranged.
PCT/DE1989/000511 1988-08-13 1989-08-02 Device for supplying fuel from a tank to an internal combustion engine, a motor vehicle in particular WO1990001636A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900700186A KR900702215A (en) 1988-08-13 1990-01-30 Device for feeding fuel from the storage tank to the vehicle's internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3827573.2 1988-08-13
DE3827573A DE3827573A1 (en) 1988-08-13 1988-08-13 DEVICE FOR PROMOTING FUEL FROM A STORAGE TANK FOR THE INTERNAL COMBUSTION ENGINE, ESPECIALLY A MOTOR VEHICLE

Publications (1)

Publication Number Publication Date
WO1990001636A1 true WO1990001636A1 (en) 1990-02-22

Family

ID=6360825

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000511 WO1990001636A1 (en) 1988-08-13 1989-08-02 Device for supplying fuel from a tank to an internal combustion engine, a motor vehicle in particular

Country Status (3)

Country Link
KR (1) KR900702215A (en)
DE (1) DE3827573A1 (en)
WO (1) WO1990001636A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ299441B6 (en) * 2000-08-19 2008-07-30 Robert Bosch Gmbh Internal gear wheel pump

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3213465B2 (en) * 1993-11-19 2001-10-02 株式会社ミツバ Fuel supply pump
DE10035900A1 (en) 2000-07-21 2002-01-31 Bosch Gmbh Robert Internal gear pump
DE10150653A1 (en) * 2001-10-13 2003-04-30 Bosch Gmbh Robert Internal gear pump
DE112005002911B4 (en) 2004-12-23 2015-10-15 Schaeffler Technologies AG & Co. KG pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH442028A (en) * 1964-09-01 1967-08-15 Carrier Corp Automatically reversing gear pump
DE2735759A1 (en) * 1977-08-09 1979-02-22 Bosch Gmbh Robert FUEL FEED PUMP

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH442028A (en) * 1964-09-01 1967-08-15 Carrier Corp Automatically reversing gear pump
DE2735759A1 (en) * 1977-08-09 1979-02-22 Bosch Gmbh Robert FUEL FEED PUMP

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ299441B6 (en) * 2000-08-19 2008-07-30 Robert Bosch Gmbh Internal gear wheel pump

Also Published As

Publication number Publication date
KR900702215A (en) 1990-12-06
DE3827573A1 (en) 1990-02-15

Similar Documents

Publication Publication Date Title
EP0517014B1 (en) Lubrication gear pump for internal combustion engines, especially for vehicles
EP2459880B1 (en) Gear pump
DE3604235C2 (en) Scroll compressor
DE3107845C2 (en)
DE3327453A1 (en) FUEL GEAR PUMP
DE19753860C1 (en) Motor vehicle fuel pump with electric motor and pump impeller
DE102009028148A1 (en) gear pump
DE3825690A1 (en) OIL FEEDING DEVICE FOR A SPIRAL COMPRESSOR
DE3500139A1 (en) AGGREGATE FOR PROMOTING FUEL FROM A STORAGE TANK TO AN INTERNAL COMBUSTION ENGINE
DE2836094C2 (en) Arrangement of an oil pump
DE10035900A1 (en) Internal gear pump
DE3912965A1 (en) AGGREGATE FOR CONVEYING FUEL
DE3900263A1 (en) AGGREGATE FOR PROCESSING FUEL FROM A STORAGE TANK FOR THE INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
WO1990001636A1 (en) Device for supplying fuel from a tank to an internal combustion engine, a motor vehicle in particular
DE10233996A1 (en) Fuel feed for motor vehicle, has feed pump assembly driven by electric motor and with filter in separate housing chamber
WO2002018798A1 (en) Aggregate for conveying fuel
DE3407081C2 (en)
DE4024628A1 (en) AGGREGATE FOR PROMOTING FUEL FROM A STORAGE TANK TO THE INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
DE19627405B4 (en) pump assembly
EP1664541A1 (en) Rotating piston machine
DE102018001684A1 (en) pump
EP0290864B1 (en) Internal axis rotary piston machine
DE4315432A1 (en) Unit for delivering fuel from a fuel tank to the internal combustion engine of a motor vehicle
DE4303328C2 (en) Gerotor pump for conveying fluid, in particular as a fuel delivery unit for motor vehicles
DE4102162A1 (en) Quiet running electric fuel pump for motor vehicle - has gear shaped impeller with sloping teeth for controlled axial thrusts

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): GB JP KR US