EP1211419A2 - Vorrichtung zum Fördern von Flüssigkeiten, insbesondere Kraftstoff - Google Patents
Vorrichtung zum Fördern von Flüssigkeiten, insbesondere Kraftstoff Download PDFInfo
- Publication number
- EP1211419A2 EP1211419A2 EP01124840A EP01124840A EP1211419A2 EP 1211419 A2 EP1211419 A2 EP 1211419A2 EP 01124840 A EP01124840 A EP 01124840A EP 01124840 A EP01124840 A EP 01124840A EP 1211419 A2 EP1211419 A2 EP 1211419A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- pump
- drive shaft
- pressure
- piston
- 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- Withdrawn
Links
Images
Classifications
-
- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/02—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
-
- 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
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
-
- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
Definitions
- the invention relates to a device for conveying Liquid, especially fuel according to the genus of Claim 1.
- Such a device is described in DE 196 38 332 A1 known.
- This device has a gear pump on that in a pump chamber paired with each other meshing rotating gears, one of which Gear is driven in rotation by a drive shaft.
- the pump chamber opens on the suction side of the Gear pump an inlet for the pumped Liquid and on the pressure side an outlet for the pumped liquid.
- the drive shaft becomes mechanical driven, for example, by an internal combustion engine which is delivered by the device fuel.
- the gear feed pump starts the internal combustion engine the device only driven at low speed, so that promoted by this only a small amount of fuel that may not be sufficient to ensure a safe To enable the engine to start.
- the device according to the invention with the features according to Claim 1 has the advantage that at low Pressure on the pressure side of the first gear pump additional gear pump through the coupling device is switched on and thus the amount of liquid delivered is enlarged. If the print on the print side of the first gear pump is sufficiently high and by the first gear pump a sufficient amount of liquid is promoted by the coupling device no longer causes the further gear pump driven.
- the training according to claim 3 allows liquid to be drawn in through both Gear pumps through a common inlet.
- the Training according to claim 4 allows an outflow liquid conveyed by both gear pumps through a common outlet, through which Check valve an outflow of fuel switched off further gear pump is prevented.
- the design according to claim 5 enables the outflow a subset of the by the first gear pump amount of liquid delivered depends on the pressure on the Pressure side, which can limit the flow rate.
- Claim 6 is an advantageous embodiment of the Coupling device specified.
- FIG. 1 shows a Fuel supply device for an internal combustion engine with a device for conveying fuel
- Figure 2 the device in a longitudinal section
- Figure 3 the Device in cross section along line III-III in Figure 2
- Figure 3a a check valve of Figure 3 in one Longitudinal section
- Figure 4 shows the device in one Cross section along line IV-IV in Figure 2.
- FIG 1 is a fuel supply device for an internal combustion engine 10, for example one Motor vehicle or a stationary internal combustion engine shown, in particular a self-igniting Internal combustion engine is.
- the fuel supply device has a device 12 for conveying fuel a reservoir 14.
- the device 12 has two Gear pumps and will be closer below explained. Downstream after device 12 is one High pressure pump 16 arranged, the suction side of the Device 12 supplied fuel is supplied.
- a high-pressure accumulator is located downstream of the high-pressure pump 16 18 arranged from which lines 20 to injection points 22 lead away on the cylinders of the internal combustion engine 10. On the injection points 22 are arranged injectors which Fuel into the combustion chambers of the cylinders Inject internal combustion engine 10.
- valves 21 are provided, through which the connection of the injectors with the High-pressure accumulator 18 can be opened and separated.
- a Fuel injection pump is provided, the suction side with the device 12 is connected.
- a high pressure pump is provided, whose suction side is connected to the device 12, wherein the high pressure accumulator 18 is then omitted.
- the device 12 is in detail shown.
- the device 12 has a first one Gear pump 30 and another gear pump 60 on.
- the device 12 has a multi-part housing a housing part 32 and one connected to it Cover part 34 on.
- the housing part 32 has a bore 36 through which a drive shaft 38 projects from the outside.
- the drive shaft 38 is driven by the internal combustion engine 10 mechanically driven.
- In the housing part 32 is the Cover part 34 facing side through a recess Pump chamber 40 for the first gear pump 30 educated.
- the first gear pump 30 has an in the Pump chamber 40 arranged gear 41 with a Spur gear on that with the drive shaft 38th is rotationally coupled and by this by one Axis of rotation 42 is driven to rotate.
- the first Gear pump 30 also has one in the pump chamber 40 arranged gear 43 with a spur gear, that meshes with the gear 41 and that on a pin 44 around an axis of rotation 45 is rotatably supported.
- the axes of rotation 42.45 the gear wheels 41, 43 run parallel to one another.
- the Pin 44 can be formed in one piece with the housing part 32 be and protrude from this into the pump chamber 40.
- the gear pump 30 is due to the rotating Gears 41, 43 along their circumference between them and the adjacent pump chamber 40 formed delivery channels 46 fuel from a suction side 48 to a pressure side 49 promoted.
- the runs in the area of the delivery channels 46 Pump chamber 40 a short distance from the circumference of the Gears 41.43.
- the meshing of the gears 41, 43 causes a seal between the suction side 48 and the Pressure side 49 of the gear pump 30.
- the Pump chamber 40 In the direction of the axes of rotation 42, 45 of the gear wheels 41, 43 is the Pump chamber 40 on the one hand through the housing part 32 and on the other hand limited by a partition 50.
- the gears 41.43 are with as little play as possible between the Housing part 32 and the partition 50 arranged to a Ensure sealing of the delivery channels 46.
- a further pump chamber 62 for the further gear pump 60 is formed in the side of the cover part facing the housing part 32 34 through a recess .
- the pump chamber 62 is at least approximately congruent in cross section the pump chamber 40 in the housing part 32 of this trained opposite.
- the further gear pump 60 has a gear 64 arranged in the pump chamber 62 with a spur toothing, which has a bore 65 and is mounted on the drive shaft 38.
- the gear 64 is about one described in more detail below
- Coupling device 66 rotatably with the drive shaft 38 can be coupled and rotated about the axis of rotation 42 by this drivable.
- the further gear pump 60 also has a gear 68 arranged in the pump chamber 62 with a Front toothing that meshes with the gear 64 and that is rotatably mounted on the pin 44 about the axis of rotation 45.
- the axes of rotation 42, 45 of the gears 41, 43 of the first Gear pump 30 and the gears 64,68 the other Gear pump 60 are identical.
- the pin 44 extends through an opening in the partition 50 through into the pump chamber 62.
- the drive shaft 38 has in its housing arranged end region parallel to its longitudinal axis 42, which is also the axis of rotation of the gear wheels 41 and 64, extending longitudinal bore 72 on a transverse bore 73 is connected to the pressure side 49, so that in the Longitudinal bore 72 of the pressure present on the pressure side 49 acts.
- a piston 74 is sealing in the longitudinal bore 72 longitudinally guided, which on one end of the existing pressure on the pressure side 49 is applied.
- On the piston is supported on its opposite end 74 from a prestressed spring 75 on the cover part 34. Is between the end face of the piston 74 and the spring 75 an at least approximately spherical support element 76 arranged.
- the cover part 34 has the piston 74 opposite a blind hole 77 in which the spring 75 is arranged.
- the blind hole 77 is with the suction side the gear pump 60 connected.
- the piston 74 has a bevel on its outer surface 78 on, for example, by a conical Section of the piston 74 is formed.
- the bevel 78 extends the outer surface of the piston 74 from the End of the piston 74 away, on which the spring 75th supports towards the front, where the pressure of the Print page 49 has a falling effect.
- the piston 74 thereby has a section with a smaller diameter that in one Section of the longitudinal bore 73 with a corresponding diameter sealingly guided and on its face from the pressure of the Pressure side 49 is applied.
- the piston 74 also has a section with a larger diameter, which in the End region of the longitudinal bore 73 with a correspondingly larger Diameter is guided and on the front side that Support element 76 supports.
- the drive shaft 38 has in its area in which Gear 64 is mounted on this, at least one at least approximately radially to the longitudinal axis 42 of FIG Drive shaft 38 ending in the longitudinal bore 73 Radial bore 80 on. Preferably at least two or more distributed over the circumference of the drive shaft 38 Radial bores 80 are provided. There is 80 in each radial bore a clamping element 82 slidably guided on his radially inner end on the bevel 78 of the piston 74 supported. Each lies at its radially outer end Clamping element 82 on the circumference of the bore 65 on the gear 64.
- the clamping elements 82 can, for example, each as Be designed sliding block.
- each clamping element 82 At its radially inner end can each clamping element 82 to the contour of the piston 74th adapted to be concavely curved. At its radial outer end, each clamping element 82 can be contoured to the Bore 65 of the gear 64 adapted convexly curved be trained.
- the Partition 50 has an opening 88 on the suction side 48, through which the pump chamber 40 of the first gear pump 30 on the suction side with the pump chamber 62 of the others Gear pump 60 is connected.
- a check valve 89 a Connection of the pump chamber 40 of the first gear pump 30 on the pressure side with the pump chamber 62 of the others Gear pump 60 controllable.
- Check valve 89 opens into the pump chamber 40 of the first gear pump 30.
- the check valve 89 has as in Figure 3a shown one acted upon by a closing spring 90 Valve member 91, which with a valve seat 92 on the Partition 50 cooperates. On the check valve 89 can continuously opened throttled pressure connection between the pump chamber 40 of the first gear pump 30 and the pump chamber 62 of the further gear pump 60 be present. This throttled connection can for example through a throttle bore 93 in the valve member 91 be formed.
- the function of the device 12 with the first gear pump 30 and the other Gear pump 60 explained.
- the gear pumps 30, 60 have a corresponding low speed on the pressure side 49 is only one low pressure present.
- the first gear feed pump 30 is always driven by the drive shaft 38.
- the piston 74 of the coupling device 66 by the spring 75 according to Figure 2 pressed to the left so that the clamping elements 82nd over the bevel 78 rising in this direction be pushed radially outwards.
- the clamping elements 82 are also caused by the rotation of the drive shaft 38 pressed on this centrifugal force radially outwards.
- the gear pumps 30, 60th each have separate inlets and outlets.
- the partition 50 can be closed and the opening 88 and the check valve 89 can be omitted.
- the piston 74 of the coupling device 66 is the pressure on the Pressure side of the first gear pump 30 is applied.
- the two gear pumps 30, 60 are parallel switched and at low pressure on the pressure side of the first gear pump 30 is by both Gear pumps 30.60 Fuel from the reservoir 14 promoted to high pressure pump 16.
Abstract
Description
Claims (10)
- Vorrichtung zum Fördern von Flüssigkeiten, insbesondere Kraftstoff, mit wenigstens einer ersten Zahnradförderpumpe (30), die in einer Pumpenkammer (40) ein Paar miteinander kämmender Zahnräder (41,43) aufweist, von denen ein Zahnrad (41) durch eine Antriebswelle (38) rotierend angetrieben wird, wobei in die Pumpenkammer (40) auf einer Saugseite (48) ein Einlaß (84) und auf einer Druckseite (49) ein Auslaß (86) mündet, dadurch gekennzeichnet, daß in Richtung der Drehachsen (42,45) der Zahnräder (41,43) der ersten Zahnradförderpumpe (30) versetzt eine weitere Zahnradförderpumpe (60) angeordnet ist, die in einer Pumpenkammer (62) ein Paar miteinander kämmender Zahnräder (64,68) aufweist, daß ein Zahnrad (64) der weiteren Zahnradförderpumpe (60) über eine Kupplungsvorrichtung (66) mit der Antriebswelle (38) drehschlüssig koppelbar ist, und daß die Kupplungsvorrichtung (66) durch den auf der Druckseite (49) der ersten Zahnradförderpumpe (30) vorhandenen Druck derart gesteuert wird, daß durch diese bei geringem Druck das Zahnrad (64) mit der Antriebswelle (38) drehschlüssig gekoppelt ist und bei höherem Druck von der Antriebswelle (38) getrennt ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Pumpenkammer (40) der ersten Zahnradförderpumpe (30) und die Pumpenkammer (62) der weiteren Zahnradförderpumpe (60) in Richtung der Drehachsen (42,45) der Zahnräder (41,43;64,68) durch eine Trennwand (50) voneinander getrennt sind.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Trennwand (50) auf der Saugseite (48) wenigstens eine Öffnung (84) aufweist, durch die die Pumpenkammern (40,62) der beiden Zahnradförderpumpen (30,60) miteinander verbunden sind.
- Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß an der Trennwand (50) auf der Druckseite (49) ein in die Pumpenkammer (40) der ersten Zahnradförderpumpe (30) öffnendes, die Pumpenkammern (40,62) der beiden Zahnradförderpumpen (30,60) miteinander verbindendes Rückschlagventil (89) angeordnet ist.
- Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß durch die Trennwand (50) hindurch auf der Druckseite (49) eine ständig geöffnete Drosselverbindung (93) zwischen den Pumpenkammern (40,62) der beiden Zahnradförderpumpen (30,60) gebildet ist.
- Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das angetriebene Zahnrad (64) der weiteren Zahnradförderpumpe (60) auf der Antriebswelle (38) gelagert ist, daß die Kupplungsvorrichtung (66) einen vom Druck auf der Auslaßseite (49) beaufschlagten, gegen eine Rückstellkraft in einer Längsbohrung (72) der Antriebswelle (38) dichtend längsverschiebbar geführten Kolben (74) aufweist, der an seiner Außenfläche wenigstens eine in Längsrichtung verlaufende Anschrägung (78) aufweist, an der sich wenigstens ein zumindest annähernd radial zur Verschieberichtung des Kolbens (74) in der Antriebswelle (38) verschiebbar geführtes Spannelement (82) abstützt, das bei einer Verschiebung des Kolbens (74) durch die Rückstellkraft gegen den Druck der Auslaßseite (49) über die Anschrägung (78) durch den Kolben (74) gegen das Zahnrad (64) gepresst wird und dadurch die Kopplung des Zahnrads (64) mit der Antriebswelle (38) bewirkt.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der Kolben (74) zur Bildung der Anschrägung (78) einen zumindest annähernd konisch ausgebildeten Abschnitt aufweist.
- Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Rückstellkraft auf den Kolben (74) durch eine vorgespannte Feder (75) erzeugt wird, die zwischen dem Kolben (74) und einem feststehenden Gehäuseteil (34) der Vorrichtung eingespannt ist.
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß sich die Feder (75) über ein zumindest annähernd kugelförmiges Stützelement (76) am Kolben- (74) abstützt.
- Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die beiden Zahnradförderpumpen (30,60) parallel geschaltet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10059423 | 2000-11-30 | ||
DE10059423A DE10059423A1 (de) | 2000-11-30 | 2000-11-30 | Vorrichtung zum Fördern von Flüssigkeiten, insbesondere Kraftstoff |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1211419A2 true EP1211419A2 (de) | 2002-06-05 |
EP1211419A3 EP1211419A3 (de) | 2003-10-15 |
Family
ID=7665220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01124840A Withdrawn EP1211419A3 (de) | 2000-11-30 | 2001-10-18 | Vorrichtung zum Fördern von Flüssigkeiten, insbesondere Kraftstoff |
Country Status (5)
Country | Link |
---|---|
US (1) | US6561768B2 (de) |
EP (1) | EP1211419A3 (de) |
JP (1) | JP2002202071A (de) |
CN (1) | CN1357680A (de) |
DE (1) | DE10059423A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1277960A2 (de) * | 2001-07-17 | 2003-01-22 | Pierburg S.p.A. | Pumpe mit variabler Fördermenge |
AT513976A4 (de) * | 2013-06-19 | 2014-09-15 | Avl List Gmbh | Schaltbare Zahnradpumpe |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040191926A1 (en) * | 2001-09-26 | 2004-09-30 | Zhong-Yin Zhang | Ptp1b inhibitors and ligands |
JP3893959B2 (ja) * | 2001-11-29 | 2007-03-14 | アイシン精機株式会社 | オイルポンプの調圧弁機構搭載構造 |
AU2002349249A1 (en) * | 2002-12-09 | 2004-06-30 | Synthes Ag Chur | Joint for movably connecting two stabilizing elements |
JP4649520B2 (ja) * | 2009-04-10 | 2011-03-09 | 本田技研工業株式会社 | ギヤポンプ |
DE102009027282A1 (de) | 2009-06-29 | 2010-12-30 | Robert Bosch Gmbh | Fluidpumpe, insbesondere Außenzahnradpumpe, mit mindestens zwei Pumpelementen |
US9599108B2 (en) | 2015-06-26 | 2017-03-21 | GM Global Technology Operations LLC | Two rotor vane pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19638322A1 (de) | 1996-09-19 | 1998-03-26 | Ver Foerderung Inst Kunststoff | Verfahren zur Herstellung von Kunststoffbauteilen mit elektrisch leitfähiger Oberfläche |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1910112C3 (de) * | 1969-02-28 | 1974-07-18 | Robert Bosch Gmbh, 7000 Stuttgart | Regeleinrichtung für die Fördermenge einer Einspritzpumpe für Brennkraftmaschinen |
FR2522734B1 (fr) * | 1982-03-04 | 1986-11-21 | Hydroperfect Int | Groupe electro-hydraulique et son application a l'assistance de dispositifs de direction, de freinage, de suspension et analogues, en particulier pour vehicules |
US4977882A (en) * | 1988-08-26 | 1990-12-18 | Diesel Kiki Co., Ltd. | Distributor type fuel injection pump |
US5006048A (en) * | 1989-09-19 | 1991-04-09 | Mingyen Electronics Industry Co., Ltd. | Electrically-operated gear rotor pump |
DE4134219A1 (de) * | 1990-10-29 | 1992-04-30 | Volkswagen Ag | Zahnradpumpe mit veraenderbarem foerdervolumen |
DE4341543A1 (de) | 1993-12-07 | 1995-06-08 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
DE19620700B4 (de) * | 1996-05-23 | 2004-09-23 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Innenachsige Zahnradpumpe, vorzugsweise für die Schmierölversorgung von Verbrennungsmotoren |
JP3097594B2 (ja) * | 1996-07-26 | 2000-10-10 | トヨタ自動車株式会社 | 動力出力装置 |
DE19638332C2 (de) | 1996-09-19 | 2000-07-20 | Bosch Gmbh Robert | Förderpumpe |
JPH1137060A (ja) * | 1997-07-16 | 1999-02-09 | Koyo Seiko Co Ltd | ギヤポンプ |
FR2783575B1 (fr) * | 1998-09-22 | 2002-03-08 | Peugeot | Pompe a huile pour circuit de lubrification d'un moteur a combustion interne |
DE19945922A1 (de) * | 1999-09-25 | 2001-03-29 | Bayerische Motoren Werke Ag | Innenzahnradpumpen umfassendes Pumpenaggregat |
WO2001079702A2 (en) * | 2000-04-17 | 2001-10-25 | Coltec Industries Inc | Fuel pump for gas turbines |
-
2000
- 2000-11-30 DE DE10059423A patent/DE10059423A1/de not_active Withdrawn
-
2001
- 2001-10-18 EP EP01124840A patent/EP1211419A3/de not_active Withdrawn
- 2001-11-20 US US09/989,950 patent/US6561768B2/en not_active Expired - Fee Related
- 2001-11-29 JP JP2001365121A patent/JP2002202071A/ja not_active Withdrawn
- 2001-11-30 CN CN01134585.3A patent/CN1357680A/zh active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19638322A1 (de) | 1996-09-19 | 1998-03-26 | Ver Foerderung Inst Kunststoff | Verfahren zur Herstellung von Kunststoffbauteilen mit elektrisch leitfähiger Oberfläche |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1277960A2 (de) * | 2001-07-17 | 2003-01-22 | Pierburg S.p.A. | Pumpe mit variabler Fördermenge |
EP1277960A3 (de) * | 2001-07-17 | 2003-11-05 | Pierburg S.p.A. | Pumpe mit variabler Fördermenge |
AT513976A4 (de) * | 2013-06-19 | 2014-09-15 | Avl List Gmbh | Schaltbare Zahnradpumpe |
AT513976B1 (de) * | 2013-06-19 | 2014-09-15 | Avl List Gmbh | Schaltbare Zahnradpumpe |
Also Published As
Publication number | Publication date |
---|---|
CN1357680A (zh) | 2002-07-10 |
EP1211419A3 (de) | 2003-10-15 |
DE10059423A1 (de) | 2002-06-13 |
US6561768B2 (en) | 2003-05-13 |
JP2002202071A (ja) | 2002-07-19 |
US20020114703A1 (en) | 2002-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19934035A1 (de) | Zahnradpumpe mit innenverzahntem Zahnrad | |
WO2000039465A1 (de) | Pumpenanordnung mit zwei hydropumpen | |
DE10118884A1 (de) | Hochdruck-Kraftstoffpumpe für ein Kraftstoffsystem einer direkteinspritzenden Brennkraftmaschine, Kraftstoffsystem sowie Brennkraftmaschine | |
EP0795083B1 (de) | Kraftstoffeinspritzpumpe | |
EP0915252A2 (de) | Common-Rail Einspritzsystem | |
EP1211419A2 (de) | Vorrichtung zum Fördern von Flüssigkeiten, insbesondere Kraftstoff | |
DE19549507C2 (de) | Einrichtung zum Fördern von Kraftstoff aus einem Vorratstank zu einer Brennkraftmaschine eines Kraftfahrzeuges | |
EP0846228B1 (de) | Kraftstoff-förderpumpe für eine kraftstoff-einspritzpumpe für brennkraftmaschinen | |
WO2005017360A1 (de) | Niederdruckpumpe für eine kraftstoffeinspritzeinrichtung einer brennkraftmaschine | |
DE19913774A1 (de) | Kraftstofffördereinheit | |
EP2655801B1 (de) | Drehkolbenmaschine, die als pumpe, verdichter oder motor arbeitet | |
EP1537334B1 (de) | Pumpe, insbesondere für eine kraftstoffeinspritzeinrichtung für eine brennkraftmaschine | |
DE10014548A1 (de) | Zahnradförderpumpe | |
DE19920997B4 (de) | Radialkolbenpumpe | |
EP0831231A2 (de) | Zahnradpumpe | |
EP1658438B1 (de) | Flüssigkeitspumpe | |
WO2004048768A1 (de) | Pumpenanordnung mit einer hochdruckpumpe und einer dieser vorgeschalteten niederdruckpumpe für eine kraftstoffeinspritzeinrichtung einer brennkraftmaschine | |
DE19920998B4 (de) | Radialkolbenpumpe | |
DE102011082644A1 (de) | Pumpenanordnung für ein Kraftstoffeinspritzsystem sowie Kraftstoffeinspritzsystem | |
DE19721241C1 (de) | Pumpedüse | |
DE3249477C2 (de) | Hydraulische Hilfskraftlenkeinrichtung f}r Kraftfahrzeuge | |
EP0709568B1 (de) | Kraftstoffeinspritzpumpe | |
EP0843096B1 (de) | Koppeleinrichtung zwischen einer Kraftstoff-Förderpumpe und einer Luft fördernden Pumpe in einem Gehäuse angeordnet | |
DE1244468B (de) | Kraftstoffeinspritzanlage fuer Brennkraftmaschinen, insbesondere Dieselmotoren, mit einer den Foerderbeginn der Einspritzpumpe aendernden Verstelleinrichtung | |
EP1149244A1 (de) | Vorrichtung zur reduzierung der axialkrafbelastung einer ein fluid fördernden pumpe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17P | Request for examination filed |
Effective date: 20040415 |
|
AKX | Designation fees paid |
Designated state(s): DE ES FR GB IT |
|
17Q | First examination report despatched |
Effective date: 20061006 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20070217 |