EP1260710B1 - Pompe de dosage pour système de chauffage - Google Patents

Pompe de dosage pour système de chauffage Download PDF

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Publication number
EP1260710B1
EP1260710B1 EP02011179A EP02011179A EP1260710B1 EP 1260710 B1 EP1260710 B1 EP 1260710B1 EP 02011179 A EP02011179 A EP 02011179A EP 02011179 A EP02011179 A EP 02011179A EP 1260710 B1 EP1260710 B1 EP 1260710B1
Authority
EP
European Patent Office
Prior art keywords
valve
pump
assembly
fluid
metering pump
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.)
Expired - Fee Related
Application number
EP02011179A
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German (de)
English (en)
Other versions
EP1260710A2 (fr
EP1260710A3 (fr
Inventor
Rolf Hartnagel
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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
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Publication of EP1260710A2 publication Critical patent/EP1260710A2/fr
Publication of EP1260710A3 publication Critical patent/EP1260710A3/fr
Application granted granted Critical
Publication of EP1260710B1 publication Critical patent/EP1260710B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • F04B7/06—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports the pistons and cylinders being relatively reciprocated and rotated
    • 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
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow

Definitions

  • the present invention relates to a metering pump according to the preamble of claim 1, as it can be used, for example, in conjunction with auxiliary heaters or auxiliary heaters in motor vehicles.
  • valve spool and a pump spool are positioned successively in their direction of movement and either by the same electromagnetic drive or in each case specifically associated with these electromagnetic drives are set in motion.
  • valve function on the one hand and the pump function on the other hand are superimposed on one another such that a defined, metered fluid flow can flow from the inlet area to the outlet area.
  • a metering pump device is known from US-A-5 312 233.
  • This pump has a rotatable and movable in the direction of its axis of rotation pumping organ.
  • a pump chamber open two line sections, one of which is used for fluid supply and the other is used for fluid removal.
  • a slot formed in the pumping organ is aligned with the supply channel.
  • an alignment with the serving for discharge channel by rotation whereupon the pump member is axially displaced.
  • the rotational movement and displacement movement are generated by a stepper motor which cooperates with a clutch / brake assembly to selectively generate a translational movement or rotational movement.
  • a metering pump device in particular for a heater, comprising a valve / pump member engaging at least partially in a recess providing a pumping chamber, wherein the valve / pumping member is rotatable back and forth about an axis between a first rotational position, in which it allows a connection between the pumping chamber and an outlet region, and a second rotational position, in which it allows a connection between an inlet region and the pumping chamber, and wherein the valve / pumping member for enabling the admission of promoting fluid in the pumping chamber from the inlet region and for delivering fluid to be pumped from the pumping chamber into the outlet region in the direction of the axis is movable.
  • both the valve function and the pump function is taken over by a single body, so the valve / pump member.
  • the valve / pumping member is rotated.
  • the valve / pumping member is displaced in the direction of the axis of rotation about which it is rotatable in order to provide the valve function.
  • valve / pumping member is movable from a first displacement position for reducing the volume of the pumping chamber towards a second displacement position and that for allowing the reception of fluid in the pumping chamber at substantially-positioned in the second rotational position valve / Pump-organ the valve / pumping member is movable from a second displacement position to increase the volume of the pumping chamber in the direction of a first displacement position.
  • the driving effort required to move the valve / pump member is reduced by providing a biasing arrangement by which the valve / pumping member is biased to a predetermined rotational / translational position, wherein at the predetermined rotational / translational position positioned valve / pumping organ this is in the second rotational position and the first displacement position.
  • the valve / pumping element has a first fluid channel arrangement which, in the case of the valve / pumping organ positioned in the first rotational position, establishes the connection between the pumping chamber and the outlet region, and a second fluid channel arrangement, which establishes the connection between the inlet region and the pumping chamber when positioned in the second rotational position valve / pumping member.
  • first fluid channel arrangement and / or the second fluid channel arrangement comprises at least one groove-like channel elongated in the direction of the axis.
  • the fluid contained in the pumping chamber can flow only in the direction of the outlet region, but can not flow back into the inlet region.
  • This can be achieved by associating with the inlet region a first valve arrangement which prevents fluid entry from the pumping chamber into the inlet region.
  • the outlet region is assigned a second valve arrangement which blocks the fluid outlet from the latter into the pumping chamber. This can be a very simple, but nevertheless in operation very safe working structure be obtained in that the first valve arrangement and / or the second valve arrangement comprises a check valve.
  • the preloading arrangement comprises a spring element which is designed at least in regions as a helical spring.
  • the above-mentioned biasing arrangement is provided for biasing the valve / pump member in a defined position
  • the actuation arrangement, the valve / pumping member against the biasing action of the biasing arrangement for performing a rotational movement from the second rotational position in the first rotational position and a displacement movement from the first displacement position to the second displacement position can be driven.
  • the actuating arrangement can act electromagnetically and can be designed, for example, such that it comprises an armature arrangement which can be moved with the valve / pump element and a substantially stationary coil / pole shoe arrangement with essentially the generation of the rotational movement of the valve / pump element the anchor arrangement cooperating first Polschuhan extract and a substantially cooperating to produce the sliding movement of the valve / pump member with the armature assembly second Polschuhan ever.
  • the first pole piece with respect to the second pole piece has a rotational offset and / or axially offset with respect to this ,
  • FIG. 1 shows a metering pump device 10 according to the invention.
  • the metering pump device 10 comprises a body 12, in which, for example by means of an insert 14, a recess 18 is provided which is open on one axial side, relative to an axis A, and which provides a pumping chamber 16.
  • a valve / pump rotary valve 20 is used with a tight fit, so that he ultimately the recess 18 is substantially fluid-tight and limited with its axial end face 22, the pumping chamber 16 to the axially open side of the recess 18 out.
  • the valve / pump rotary valve 20 is rotatable in the recess 18 both about the axis A and in the direction of the axis A.
  • the valve / pump rotary valve hereinafter referred to as rotary valve, in adaptation to the shape of the recess 18 may have a circular outer peripheral contour.
  • an inlet area In the body 12 there is formed an inlet area, generally designated 24.
  • This comprises a first opening or bore 26, which is open in the region of an inlet opening 28 to a fluid supply.
  • a second opening or bore 30, which is formed substantially in the insert 14, opens on the one hand into the recess 18 and on the other hand opens into an opening region 32 connecting the two openings or bores 28, 30 with a larger dimension.
  • a valve arrangement 34 is provided which, for example, comprises a valve ball 36 pressed by spring preload onto a valve seat. This valve arrangement 34 thus essentially forms a check valve preventing the backflow of fluid from the pumping chamber 16 into the inlet region 24, in particular the opening of the bore 26 thereof.
  • An outlet region 38 of the metering pump device 10 comprises in the body 12 an opening or bore 40 which opens at its open end into a closed by a housing 42 or the like volume region 44.
  • an opening or bore 46 is provided corresponding to the opening or bore 30 of the inlet region 24, which opens into the recess 18 at approximately the same axial level.
  • a generally designated 48 valve arrangement is provided, which in turn may include a biased by spring preload on a valve seat valve ball 50.
  • This valve arrangement 48 in turn forms a check valve which reliably prevents fluid from the outlet region 38, in particular the opening or bore 40 thereof, from flowing back into the recess 18 or the pumping chamber 16.
  • an outlet conduit 52 continues to the system to be supplied with the fluid, for example a fuel heater heater of a vehicle heater.
  • the fluid for example a fuel heater heater of a vehicle heater.
  • the latter sits in the region of an armature 54 carried thereon with a sealing element 56 on the outlet line 52 and thus also ensures a tight seal there.
  • Fig. 2 it can be seen that the two opening into the recess 18 openings or holes 30, 46, which are approximately at the same axial level, are substantially directly opposite each other and thus have an angular offset of 180 °.
  • a groove-like recess 58, 60 which extends in each case essentially in the direction of the axis A, is open towards the end face 22 and opens radially outward, providing a fluid flow channel.
  • these two channels 58, 60 have an angular distance from one another which is less than 180 °, that is to say can be in the region of 135 °, for example.
  • the length of these channels 58, 60 is dimensioned such that regardless of the displacement position of the rotary valve 20 with a corresponding rotational positioning of the rotary valve 20, the openings 30, 46 can always open into the associated channels 58 and 60 respectively.
  • the rotary valve 20 is associated with a biasing spring 62.
  • This is designed as a coil leg spring and ensures its trained by the nature of a helical compression spring central portion 64 that is biased by support on the body 12 on the one hand and the armature 54 on the other hand, the rotary valve 20 axially in the positioning shown in Fig. 1, in which it is moved out of the recess 18 to a maximum extent and is seated with the sealing element 56 on the outlet line 52.
  • the two legs 66, 68 are supported in the circumferential direction with respect to the axis A on the body 12 on the one hand and the armature 54 on the other hand and ensure by appropriate Torsionsentwindenung the spring 62 that the rotary valve 20 in the recognizable in Figs.
  • the displacement position in which the valve spool 20 is immersed in the recess 18 to a maximum extent and thus the pumping chamber 16 has its minimum volume referred to as the second displacement position
  • the recognizable in Fig. 1 displacement position, in which the volume of the pumping chamber 16 is maximum is referred to as the first displacement position.
  • the actuating arrangement 70 shown schematically in FIGS. 11a and 11b comprises the armature 54 already mentioned and coupled to the rotary valve 20. Further, a yoke 72 communicating with a coil, not shown, is provided. The yoke 72 has two pairs of spaced-apart pole pieces 74, 76 and 78, 80, respectively. In the plan view of Fig. 11a it can be seen that the two pairs of pole pieces 74, 76 and 78, 80 to each other have an angular offset. For example, the arrangement is such that when in the second rotational position Dodge rotary valve 20 and in a corresponding rotational position réellern anchor 54, which rotational position is shown in Fig.
  • the armature 54 with its axis A orthogonal to the long body axis B to the pole pieces 74th , 76 is rotated in the range of about 45 °, while it is twisted to the pole pieces 78, 80 in the range of about 90 °.
  • the armature 54 is approximately at the same axial level as the pole shoes 74, 76 and thus to this also due to the smaller angular offset has a smaller distance, as compared to the both more angularly offset and positioned at an axially greater distance pole pieces 78, 80th
  • the coil is not energized by the tendency to minimize the magnetic resistance, first by magnetic interaction through the Arrows P 1 constructed in Fig. 12a shown magnetic flux and reduced by the generation of torque between the pole pieces 74, 76 and the armature 54 existing air gap. It is therefore opposite to the bias of the spring 62 to the armature 54 and thus the rotary valve 20, a torque applied until, in the ideal case, the recognizable in Fig. 13a rotational position is reached.
  • the actuator assembly 70 is thus achieved that upon energization of the same initially essentially one of the Torsionsentschreib the spring 62 counteracting torque is built up, and then when a rotation angle of 45 ° has been achieved, one of the axial relaxation of the spring 62nd counteracting displacement force is built up.
  • the starting point a means a positioning of the armature 54 and the rotary valve 20 coupled thereto in which they are in the first displacement position and the second rotational position.
  • the point b means the positioning of the rotary valve 20 in the second displacement position and in the first rotational position.
  • a force is exerted on the rotary valve 20 or the armature 54 only by the spring 62.
  • This is a force composed by superimposing an axial relaxation force and a rotational relaxation force. Regardless of any friction effects, a relaxation movement is obtained which leads to a characteristic section d. In this case, an approximately straight course between the points b and a is obtained by simultaneous rotational relaxation and axial relaxation.
  • the metering pump 10 is in a non-energized state of the actuator assembly as previously described. That is, by biasing action of the spring 62, the rotary valve 20 is in its first displacement position and its second rotational position. In this position, the entrance area 24 is in communication with the pumping chamber 16 via the passage 58, and by the fluid pressure (overpressure) prevailing in the inlet area 24 or the negative pressure prevailing in the pumping chamber, the check valve 34 is opened and fluid flows into the pumping chamber 16 on or has already flowed. If the actuating arrangement is then subsequently excited, then, as can be seen from the characteristic curve c in FIG. 15, it initially generates essentially a force rotating the armature 54 and the rotary valve 20.
  • the pumping chamber 16 Since in this state, the pumping chamber 16 is substantially completely filled with the approximately incompressible fluid and since through the check valve 34, an outflow of fluid to the inlet portion 24 out is not possible, is in this state, ie in the first displacement position and the second rotational position located rotary valve 20, a linear displacement to reduce the volume of the pumping chamber 16 is substantially not possible. It thus initially sets in a rotational movement, in the course of which the recognizable in Fig. 2 orientation of the opening 30 is lifted with the channel 58, so that in a transition phase, neither the opening 30, nor the opening 46 with the respective associated channel 58 or 60 is aligned.
  • the rotary valve 20 is still in the first displacement position, but now in the first rotational position. In this first rotational position of the channel 60 is aligned with the associated opening 46. Once this rotational position has been reached, the effect of the check valve 48 can now be overcome by the axial thrust force, which is also effective or effective, and the rotary valve 20 can be displaced downwardly to reduce the volume of the pumping chamber 16 in the illustration of FIG. In this case, the fluid present in the pumping chamber 16 will flow through the channel 60 and the opening 46 into the opening 40 and on to the volume area 44 indicated in FIG.
  • the volume of the pumping chamber 16 is maximum and this is again completely filled with fluid.
  • the Dosierpump worn 10 is then back in the in Fig. 1 also recognizable position, ie, the rotary valve 20 is in the first displacement position and the second rotational position.
  • the armature 54 or the sealing element 56 carried thereon rests on the outlet line 52 and closes it off.
  • the rotary valve 20 fulfills a double pumping function.
  • the rotary valve 20 pumps fluid from the region of the pumping chamber 16 into the volume region 44 via the openings 46, 40.
  • it pumps the fluid present in the volume region 44 or at least part of it into the outlet line in the above-mentioned suction stroke 52.
  • the volume region 44 thus forms an intermediate chamber which alternately receives fluid from the pumping chamber 16 and delivers fluid to the outlet conduit 52.
  • the present invention provides a metering pumping device which is very simple in construction and very easy to operate due to the fact that it has only a single member which has to be moved to provide the valve function and to provide the pumping function. Furthermore, it is ensured by the interaction of this single organ, in particular with the two described valve arrangements or check valves, that movements defined in the various operating phases, for example rotational movements or displacement movements, occur. This is particularly supported when the actuation arrangement is excited by the actuation characteristic curve of the latter, so that a relief for the valve arrangement assigned to the inlet area can be provided, in particular, during the transition from the first displacement position and the second rotational position to the second displacement position and first rotational position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Reciprocating Pumps (AREA)

Claims (12)

  1. Equipement de pompe de dosage, en particulier pour un appareil de chauffage, comportant un organe avec vanne et pompe (20), s'engageant au moins par zones dans un évidement (18) formant une chambre de pompe (16), l'organe avec vanne et pompe (20) étant apte à tourner en va-et-vient autour d'un axe (A) entre une première position de rotation, dans laquelle il autorise une liaison entre la chambre de pompe (16) et une zone de sortie (38), et une deuxième position de rotation, dans laquelle il autorise une liaison entre une zone d'entrée (24) et la chambre de pompe (16), et l'organe avec vanne et pompe (20) étant mobile dans la direction de l'axe (A) en vue de permettre l'admission d'un fluide à transporter vers l'intérieur de la chambre de pompe (16) à partir de la zone d'entrée (24) et en vue d'évacuer le fluide à transporter hors de la chambre de pompe (16) dans la zone de sortie (38),
    l'organe avec vanne et pompe (20) est déplaçable depuis une première position de déplacement axial pour réduire le volume de la chambre de pompe (16) vers une deuxième position de déplacement axial, pour évacuer le fluide hors de la chambre de pompe (16) lorsque l'organe avec vanne et pompe (20) est positionné sensiblement dans la première position de rotation, et
    l'organe avec vanne et pompe (20) est déplaçable depuis une deuxième position de déplacement axial pour augmenter le volume de la chambre de pompe (16) vers une première position de déplacement axial, pour permettre l'admission du fluide dans la chambre de pompe (16) lorsque l'organe avec vanne et pompe (20) est positionné sensiblement dans la deuxième position de rotation,
    caractérisée par un dispositif de précontrainte (62) par lequel l'organe avec vanne et pompe (20) est précontraint dans une position de rotation et de translation prédéterminée,
    l'organe avec vanne et pompe (20) étant dans la deuxième position de rotation et dans la première position de déplacement axial lorsque ledit organe est positionné dans la position de rotation et de translation prédéterminée,.
  2. Equipement de pompe de dosage selon la revendication 1, caractérisée en ce que l'organe avec vanne et pompe (20) comporte un premier système de canal de fluide (60) qui, lorsque l'organe avec vanne et pompe (20) est situé dans la première position de rotation, établit la liaison entre la chambre de pompe (16) et la zone de sortie (38), et comporte un deuxième système de canal de fluide (58) qui, lorsque l'organe avec vanne et pompe (20) est situé dans la deuxième position de rotation, établit la liaison entre la zone d'entrée (24) et la chambre de pompe (16).
  3. Equipement de pompe de dosage selon la revendication 2, caractérisée en ce que le premier système de canal de fluide (60) et/ou le deuxième système de canal de fluide (58) comporte au moins un canal (58, 60) en forme de rainure allongée dans la direction de l'axe (A).
  4. Equipement de pompe de dosage selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'à la zone d'entrée (24) est associé un premier système de vannes (34) empêchant une entrée du fluide à partir de la chambre de pompe (16) dans la zone d'entrée (24).
  5. Equipement de pompe de dosage selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'à la zone de sortie (38) est associé un deuxième système de vannes (48) empêchant une sortie du fluide à partir de cette dernière dans la chambre de pompe (16).
  6. Equipement de pompe de dosage selon la revendication 4 ou 5, caractérisée en ce que le premier système de vannes (34) et/ou le deuxième système de vannes (48) comportent un clapet anti-retour.
  7. Equipement de pompe de dosage selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le dispositif de précontrainte (62) comporte un élément de ressort (62) réalisé au moins par zones sous forme de ressort hélicoïdal.
  8. Equipement de pompe de dosage selon l'une quelconque des revendications 1 à 7, caractérisée en ce qu'un dispositif d'actionnement (70) est associé à l'organe avec vanne et pompe (20).
  9. Equipement de pompe de dosage selon la revendication 8, caractérisée en ce que l'organe avec vanne et pompe (20) peut être actionné par le dispositif d'actionnement (70) à l'encontre de l'action de précontrainte du dispositif de précontrainte (62) en vue d'effectuer un mouvement de rotation depuis la deuxième position de rotation vers la première position de rotation et un mouvement de translation depuis la première position de déplacement axial vers la deuxième position de déplacement axial.
  10. Equipement de pompe de dosage selon la revendication 8 ou 9, caractérisée en ce que le dispositif d'actionnement (70) agit par voie électromagnétique.
  11. Equipement de pompe de dosage selon la revendication 10, caractérisée en ce que le dispositif d'actionnement (70) comporte un dispositif à induit (54) pouvant se déplacer avec l'organe avec vanne et pompe (20), ainsi qu'un dispositif à bobine et épanouissement polaire (72) sensiblement fixe, avec un premier dispositif à épanouissement polaire (74, 76) coopérant sensiblement avec le dispositif à induit (54) pour générer le mouvement de rotation de l'organe avec vanne et pompe (20) et un deuxième dispositif à épanouissement polaire (78, 80) coopérant sensiblement avec le dispositif à induit (54) pour générer le mouvement de translation de l'organe avec vanne et pompe (20).
  12. Equipement de pompe de dosage selon la revendication 11, caractérisée en ce que le premier dispositif à épanouissement polaire (74, 76) est décalé en rotation par rapport au deuxième dispositif à épanouissement polaire (78, 80) et/ou est décalé dans le sens axial par rapport à ce dernier.
EP02011179A 2001-05-23 2002-05-21 Pompe de dosage pour système de chauffage Expired - Fee Related EP1260710B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10125222 2001-05-23
DE10125222A DE10125222A1 (de) 2001-05-23 2001-05-23 Dosierpumpeinrichtung, insbesondere für ein Heizgerät

Publications (3)

Publication Number Publication Date
EP1260710A2 EP1260710A2 (fr) 2002-11-27
EP1260710A3 EP1260710A3 (fr) 2004-04-07
EP1260710B1 true EP1260710B1 (fr) 2007-05-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011179A Expired - Fee Related EP1260710B1 (fr) 2001-05-23 2002-05-21 Pompe de dosage pour système de chauffage

Country Status (3)

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EP (1) EP1260710B1 (fr)
CZ (1) CZ304774B6 (fr)
DE (2) DE10125222A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7798783B2 (en) * 2006-04-06 2010-09-21 Micropump, Inc. Magnetically driven valveless piston pumps
FR3052137B1 (fr) * 2016-06-01 2019-03-29 Peugeot Citroen Automobiles Sa Procede de montage sous caisse d'un dispositif de pompe
CN106401894A (zh) * 2016-12-13 2017-02-15 无锡书谱尔精密机械科技有限公司 双槽精密计量泵
EP3502469A1 (fr) * 2017-12-20 2019-06-26 Sensile Medical AG Micropompe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE47507C (de) * H. hassert in Magdeburg-Buckau, Martinstrafse 10 Kolbenpumpe ohne Ventile
DE2503300C2 (de) * 1975-01-28 1986-04-24 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE3630528A1 (de) * 1986-09-08 1988-03-10 Klaus Hirsch Kolbenpumpe
US5312233A (en) * 1992-02-25 1994-05-17 Ivek Corporation Linear liquid dispensing pump for dispensing liquid in nanoliter volumes
DE4243866A1 (de) * 1992-12-23 1994-06-30 Thomas Magnete Gmbh Elektromagnetisch betriebene Pumpe
DE19528618A1 (de) * 1995-08-04 1997-02-06 Prominent Dosiertechnik Gmbh Verdrängerkolbenpumpe
DE19860573A1 (de) * 1998-12-29 2000-07-06 Eberspaecher J Gmbh & Co Brennstoffdosierpumpe für ein Heizgerät, insbesondere für einen Zuheizer oder eine Standheizung eines Kraftfahrzeuges

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1260710A2 (fr) 2002-11-27
CZ304774B6 (cs) 2014-10-15
CZ20021561A3 (cs) 2003-01-15
DE10125222A1 (de) 2002-12-05
DE50210056D1 (de) 2007-06-14
EP1260710A3 (fr) 2004-04-07

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