EP1536137B1 - Kraftstoffpumpe für eine Brennkraftmaschine - Google Patents

Kraftstoffpumpe für eine Brennkraftmaschine Download PDF

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Publication number
EP1536137B1
EP1536137B1 EP04105725A EP04105725A EP1536137B1 EP 1536137 B1 EP1536137 B1 EP 1536137B1 EP 04105725 A EP04105725 A EP 04105725A EP 04105725 A EP04105725 A EP 04105725A EP 1536137 B1 EP1536137 B1 EP 1536137B1
Authority
EP
European Patent Office
Prior art keywords
chamber
fuel pump
piston
diaphragm
oil
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.)
Not-in-force
Application number
EP04105725A
Other languages
English (en)
French (fr)
Other versions
EP1536137A1 (de
Inventor
Massimo Lolli
Marcello Cristiani
Paolo Pasquali
Cecilia Lamberti
Massimo Mattioli
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.)
Marelli Europe SpA
Original Assignee
Magneti Marelli Powertrain SpA
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
Priority claimed from ITBO20030712 external-priority patent/ITBO20030712A1/it
Priority claimed from ITBO20040141 external-priority patent/ITBO20040141A1/it
Application filed by Magneti Marelli Powertrain SpA filed Critical Magneti Marelli Powertrain SpA
Priority to PL04105725T priority Critical patent/PL1536137T3/pl
Publication of EP1536137A1 publication Critical patent/EP1536137A1/de
Application granted granted Critical
Publication of EP1536137B1 publication Critical patent/EP1536137B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members

Definitions

  • the present invention relates to a fuel pump for an internal combustion engine.
  • the present invention relates more particularly to a fuel pump for a unit for the direct injection of fuel, in this case petrol, to which the following description will refer without entering into superfluous detail.
  • a petrol pump of the type comprising a cylinder having a predetermined longitudinal axis, a piston mounted to slide within the cylinder and actuator means adapted to provide the piston with an alternating rectilinear movement along this cylinder.
  • the piston comprises an active end surface which is disposed transversely with respect to the above-mentioned axis and defines, together with the cylinder, a first variable-volume chamber adapted to contain the petrol, is configured so as to define, together with the cylinder, a second chamber of substantially constant volume adapted to contain oil, and is lastly provided with an annular gasket keyed on the piston in order to separate the first chamber from the second chamber in a leak-tight manner.
  • US-5520523-A1 discloses a diaphragm-type pump including a disk-like diaphragm made of an elastic material which is held between an upper housing and a lower housing.
  • the diaphragm which has a flat shape before it is mounted in the pump, is bent along a diaphragm stopper and mounted in the pump; consequently, an urging force is constantly applied to the diaphragm in such a direction as to press it on the diaphragm stopper.
  • the diaphragm is deformed in response to reciprocation of a plunger, and when the plunger reaches the bottom dead center and a cylinder chamber is decreased in pressure, the diaphragm is pressed on the diaphragm stopper by the urging force toward the diaphragm stopper and a feed pressure of a feed pump
  • US-6071089-A1 discloses a high pressure hydraulic diaphragm pump having a pressure chamber on one side of a diaphragm and a fluid delivery chamber on the other side of the diaphragm with a reciprocating piston assembly including a piston member being provided for pressurizing the hydraulic fluid in the pressure chamber and having the pressure chamber connected with a pressure regulator which maintains the desired discharge pressure of the fluid and in which the piston assembly is combined with a diaphragm positioning mechanism for maintaining the diaphragm at a desired position relative to the piston member so as to assure full stroke of the diaphragm during normal operation of the pump
  • GB-849557-A discloses a hydraulically actuated diaphragm pump; a hydraulic pressure chamber is placed in communication with a hydraulic reservoir by means of a valve secured to a diaphragm and having a part open to the chamber and connecting with either of parts which communicate through valves with the reservoir so that excess liquid is discharged or deficiency made up.
  • a face carried by the diaphragm seats on a face on the housing.
  • the pumping chamber communicates through a pair of inlet valves with inlet conduits and through a pair of outlet valves with outlet conduits.
  • the pump may comprise a plurality of diaphragm chambers.
  • US-6554578-B1 relates to a diaphragm pump with a device for controlling the position of a diaphragm separating the conveying chamber from the displacement chamber.
  • a pressure sensor is arranged in the displacement chamber, which is connected with an evaluation unit designed for generating a refill signal, which is switched so it actuates a refill valve through an operative connection; advantageously, a second sensor for detecting the piston travel is provided, whose signal is linked with the signal from the pressure sensor.
  • the object of the present invention is to provide a fuel pump for an internal combustion engine which is free from the drawbacks described above and is simple and economic to embody, and to provide a controlled deformation of the diaphragm..
  • the present invention therefore relates to a fuel pump for an internal combustion engine as claimed in the attached claims.
  • a petrol pump for an internal combustion engine (not shown) of the direct petrol injection type is shown overall by 1.
  • the pump 1 comprises a cylindrical body 2 having a predetermined longitudinal axis 3 and comprising, in turn, a first plate 4 which is coaxial with respect to the axis 3, is limited axially by two plane surfaces 5, 6 at right angles to the axis 3 and has a cylindrical cavity 7 which opens externally at the location of the plate 6 and is closed by a second plate 8 disposed in contact with the surface 6 and secured to the plate 4.
  • the plate 8 is bounded axially by two plane surfaces 9, 10 at right angles to the axis 3, the surface 9 being disposed in contact with the surface 6 and having a cylindrical cavity 11 which is obtained through the plate 8 coaxially with respect to the axis 3, and opens externally at the location of the both the surface 9 and the surface 10.
  • the cavities 7 and 11 are separated from one another by means of a deformable diaphragm 12 which is made from stainless steel, is welded between the plates 4 and 8 at the location of its peripheral edge, and defines, together with the cavity 7, a variable-volume chamber 13 adapted to contain the petrol provided with an intake ball valve 14 and a delivery ball valve 15 of known type.
  • a deformable diaphragm 12 which is made from stainless steel, is welded between the plates 4 and 8 at the location of its peripheral edge, and defines, together with the cavity 7, a variable-volume chamber 13 adapted to contain the petrol provided with an intake ball valve 14 and a delivery ball valve 15 of known type.
  • the cavity 11 comprises a widened portion 16 disposed in a position facing the diaphragm 12 and a contracted portion 17 engaged in a sliding manner by a piston 18 having an active end surface 19 which extends at right angles to the axis 3 in order axially to limit this piston 18 and defines, together with the cavity 11 and the diaphragm 12, a chamber 20 of substantially constant volume adapted to contain the oil of the engine (not shown).
  • the chamber 20 is provided with an intake valve 21 of known type adapted to supply the chamber 20 with a quantity of oil substantially equal to the quantity of oil emerging from this chamber 20 by drawing between the portion 17 and the piston 18 and therefore adapted to maintain the quantity of oil in the chamber 20 constant, and a maximum pressure valve 22 adapted to be disposed in an open position when the value of the oil pressure within the chamber 20 is substantially equal to a predetermined value.
  • the piston 18 may move along the portion 17 in order to perform, under the thrust of an actuation device 23, an alternating rectilinear movement comprising an outward stroke, during which the diaphragm 12 is displaced from an operational pumping position (shown by a continuous line in the accompanying Figure) to a rest position (shown in dashed lines in the accompanying Figure) and the volume of the chamber 13 increases in order to cause the opening of the intake valve 14, and a return stroke, during which the diaphragm 12 is displaced from its rest position to its operational pumping position and the volume of the chamber 13 decreases in order to cause the opening of the delivery valve 15.
  • the device 23 comprises a spring 24, which is keyed on the piston 18 coaxially with respect to the axis 3, and is interposed between the plate 8 and the piston 18 in order to provide this piston 18 with its outward stroke, and a cam 25 which is mounted in a rotary manner to rotate about its longitudinal axis 26 perpendicular to the axis 3, and cooperates with a tappet roller 27 coupled in a rotary and axially fixed manner to the piston 18 in order to provide this piston 18 with its return stroke.
  • the diaphragm 12, the chamber 20, the piston 18 and the actuation device 23 form a pumping device 28 adapted to use the oil in the chamber 20 to deform the diaphragm 12 and thus to vary the volume of the chamber 13.
  • the deformation of the diaphragm 12 is controlled selectively by providing the diaphragm 12 and the piston 18 such that the value of the ratio between the surface of the diaphragm 12 and the surface of the face 19 is at least equal to five.
  • the opening of the valve 15 during the return stroke of the piston 18 and, therefore, the quantity of petrol supplied via the valve 15 at each operating cycle of the pump 1 are controlled selectively by a flow regulation device 29 comprising an electromagnetic actuator 30 mounted at the location of the valve 14.
  • the actuator 30 comprises an output rod 31 which extends within the valve 14 parallel to the axis 3, and is mounted in a sliding manner in order to move between an operating position (shown in dashed lines in the accompanying Figure), in which the rod 31 is disposed so as to cause the opening of the valve 14, and a rest position (shown in continuous lines in the accompanying Figure), in which the rod 31 is disposed so as to enable the closure of the valve 14.
  • valve 15 Since the valve 15 is calibrated so as to open, during the return stroke of the piston 18, only when the valve 14 is closed, the actuation of the actuator 30 makes it possible selectively to control the opening of this valve 15.
  • the variant shown in Fig. 2 relates to a pump 32 which differs from the pump 1 in that the intake ball valve 14 is replaced by an intake valve 33 comprising a plate 34 which is mounted at right angles to a longitudinal axis 35 of a duct 36 supplying petrol to the chamber 13 and is provided with a plurality of supply holes 37 obtained through the plate 34 parallel to the axis 35, and a deformable sheet 38 which is secured to the plate 34 at its peripheral edge, is normally disposed in a position closing (Fig. 2) the holes 37, and moves, during the outward stroke of the piston 18, from the closed position to an open position (not shown) of these holes 37 in order to enable the petrol to enter the chamber 13.
  • the pump 32 also differs from the pump 1 in that the diaphragm 12 comprises a central portion 39 clamped between two substantially cup-shaped stiffening members 40, one of which (designated hereafter by 40a) is disposed in the chamber 13 and the other of which (designated hereafter by 40b) is disposed in the chamber 20.
  • the member 40b is shaped so as to be disposed in contact, during the outward stroke of the piston 18, with a wall 41 bounding the chamber 20 and thus to control the deformation of the diaphragm 12 and is further provided with a plurality of radial channels 42 adapted to enable the oil to pass through the member 40b when this member 40b is disposed in contact with the wall 41.
  • the pump 32 lastly differs from the pump 1 in that the intake valve 21, the maximum pressure valve 22 and the electromagnetic actuator 30 are replaced by a single electromagnetic valve 43 mounted within a cavity 44 which is provided in the plate 8, has a longitudinal axis 45 transverse to the axis 3 and communicates with the chamber 20 via a hole 46 obtained through this plate 8.
  • the valve 43 comprises an outer tubular jacket 47 which is substantially cup-shaped, is housed within the cavity 44 coaxially with respect to the axis 45, and is provided with a plurality of radial holes 48 uniformly distributed about the axis 45 in order to enable oil to be supplied into this jacket 47 and with an axial hole 49.
  • the jacket 47 is closed axially by an electromagnet 50 and houses a ball shutter 51 which is coupled in a sliding manner to the jacket 47 and has a ball 52 closing the hole 49.
  • the shutter 51 and therefore the ball 52 are normally disposed, under the thrust of a spring 53 interposed between the electromagnet 50 and the shutter 51, in a position (Fig. 2) closing the hole 49, and are displaced by the electromagnet 50, against the action of the spring 53, into a position (not shown) opening the hole 49 in which the oil is supplied to the hole 49 by means of a plurality of supply channels 54 obtained on the outer surface of the ball 52 parallel to the axis 45.
  • the electromagnet 50 is excited in order to displace the shutter 51 and therefore the ball 52 into their position opening the hole 49 so as to supply a predetermined initial quantity of oil to the hole 46 and therefore to the chamber 20.
  • the initial quantity of oil supplied to the chamber 20 may be maintained constant, in use, by selectively opening the valve 43 in order to supply the chamber 20 with a quantity of oil substantially equal to the quantity of oil emerging from time to time from the chamber 20 as a result of leakage between the portion 17 and the piston 18.
  • valve 43 within the oil supply circuit to the chamber 20 makes it possible to supply the petrol suctioned into the chamber 13 directly to the delivery valve 15 and to prevent, in contrast to what happens when using the electromagnetic actuator 30, the losses of energy deriving from the reflux of the petrol suctioned into the chamber 13 through the intake valve 14.
  • the spring 53 is also calibrated so as to thrust the shutter 51 into its position closing the hole 49 with a force which is in all cases lower than the force of opposite direction exerted on the shutter 51 by the oil contained in the chamber 20 and in the hole 46 when the value of the pressure of the oil in the chamber 20 is substantially equal to a predetermined value. In this way, the oil is discharged through the holes 48 thus avoiding breakages of the diaphragm 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (16)

  1. Eine Kraftstoffpumpe für einen Verbrennungsmotor; die aufweist:
    eine erste Kammer mit variablem Volumen (13), die daran angepasst ist, Kraftstoff zu enthalten, wobei diese erste Kamme (13) mit einem Ansaugventil (14) und einem Abgabeventil (15) versehen ist;
    Pumpmittel (28), um das Volumen der ersten Kammer (13) zu verändern, und aufweisend eine zweite Kammer (20), daran angepaßt, Öl zu enthalten, einen Kolben (18), montiert, um innerhalb der zweiten Kammer (20) zu gleiten, Betätigungsmittel (23), daran angepasst, den Kolben (18) mit einer alternierenden Bewegung innerhalb der zweiten Kammer (20) zu versehen, und Trennmittel (12), um die erste und die zweite Kammer (13, 20) in leckdichter Art voneinander zu trennen; wobei der Kolben (18) eine aktive Endoberfläche (19) aufweist, die die zweite Kammer (20) begrenzt, und die Trennmittel (12) eine verformbare Membran (12) aufweisen, daran angepasst, im Betrieb deformiert zu werden, um das Volumen der ersten Kammer (13) unter der Wirkung des Schubs zu verändern, der durch das in der zweiten Kammer (20) enthaltene Öl der alternierenden Bewegung des Kolbens (18) innerhalb der zweiten Kammer (20) folgend, ausgeübt wird; und
    mindestens ein Versteifungsbauteil (40a, 40b), das an einem zentralen Abschnitt (39) der Membran (12) angeordnet ist, innerhalb der zweiten Kammer (20) montiert ist und daran angepaßt ist, bei der Verwendung in Kontakt mit einer Wand (41), die die zweite Kammer (20) begrenzt, angeordnet zu sein;
    wobei die Kraftstoffpumpe dadurch gekennzeichnet ist, daß das Versteifungsbauteil (40a, 40b) in der zweiten Kammer (20) mit einer Mehrzahl von Kanälen (42) für den Durchgang des Öls durch das Versteifungsbauteil (40a, 40b) versehen ist.
  2. Eine Kraftstoffpumpe gemäß Anspruch 1, in der die Membran (12) und die aktive Oberfläche (19) des Kolbens (18) eine erste bzw. eine zweite Oberfläche aufweisen, wobei das Verhältnis zwischen der ersten und der zweiten Oberfläche mindestens gleich fünf ist.
  3. Eine Kraftstoffpumpe gemäß Anspruch 1 oder 2, in der die zweite Kammer (20) mit einem Maximaldruckventil (22) versehen ist, das daran angepaßt ist, in einer offenen Position angeordnet zu sein, wenn der Wert des Öldrucks innerhalb der zweiten Kammer (20) im wesentlichen gleich einem vorbestimmten Wert ist.
  4. Eine Kraftstoffpumpe gemäß einem der vorhergehenden Ansprüche, in der die Membran (12) eine Stahlmembran ist.
  5. Eine Kraftstoffpumpe gemäß einem der vorhergehenden Ansprüche, in der die alternierende Bewegung des Kolbens (18) einen Auswärtshub und einen Rückhub aufweist, wobei die Betätigungsmittel (23) erste Schubmittel, um den Kolben (18) mit seinem Auswärtshub zu versehen, und zweite Schubmittel, um den Kolben (18) mit seinem Rückhub zu versehen, aufweisen.
  6. Eine Kraftstoffpumpe gemäß Anspruch 5, in der die ersten Schubmittel federnde Schubmittel aufweisen.
  7. Eine Kraftstoffpumpe gemäß Anspruch 5 oder 6, in der die zweiten Schubmittel eine Nocke und eine Stößelrolle (27), die an den Kolben (18) montiert ist und mit der Nocke (25) zusammenwirkt, aufweisen.
  8. Eine Kraftstoffpumpe gemäß einem der vorhergehenden Ansprüche, in der die zweite Kammer (20) mit einem weiteren Ansaugventil (21) versehen ist, das daran angepaßt ist, eine in der zweiten Kammer (20) enthaltenen Ölmenge konstant zu halten.
  9. Eine Kraftstoffpumpe gemäß einem der vorhergehenden Ansprüche, in der die alternierende Bewegung des Kolbens (18) einen Auswärtshub, um das Volumen der ersten Kammer (13) zu erhöhen und die Öffnung des Ansaugventils (14) zu steuern, und einen Rückhub, um das Volumen der ersten Kammer (13) zu verringern und das Öffnen des Abgabeventils (15) zu ermöglichen, aufweist, wobei ein Flußregulierungsmittel (29; 43) vorgesehen ist, um das Öffnen des Abgabeventils (15) während des Rückhubs selektiv zu steuern.
  10. Eine Kraftstoffpumpe gemäß Anspruch 9, in der das Flußregulierungsmittel (29) ferner Betätigungsmittel (30) aufweist, die daran angepaßt sind, das Ansaugventil (14) während des Rückhubs zu öffnen, wobei das Abgabeventil (15) konfiguriert ist, während des Rückhubs nur dann zu öffnen wenn das Ansaugventil (14) geschlossen ist.
  11. Eine Kraftstoffpumpe gemäß Anspruch 10, in der die weiteren Betätigungsmittel (30) ein elektromagnetisches Stellglied aufweisen.
  12. Eine Kraftstoffpumpe gemäß Anspruch 9, in der die Flußregulierungsmittel (43) ein Zuführungsventil (43) aufweisen, das daran angepaßt ist, die Zuführung von Öl in die zweite Kammer (20) selektiv zu steuern.
  13. Eine Kraftstoffpumpe gemäß Anspruch 12, in der das Zuführungsventil (43) einen Verschluß (51), dritte Schubmittel (53), die daran angepaßt sind, normalerweise den Verschluß (51) in einer das Zuführungsventil (43) schließenden Position zu halten, und vierte Schubmittel (50), die daran angepaßt sind, den Verschluß (51) aus der verschlossenen Position in eine offene Position des Zuführungsventils (43) zu versetzen, aufweist.
  14. Eine Kraftstoffpumpe gemäß Anspruch 13, in der die vierten Schubmittel (50) ein weiteres elektromagnetisches Stellglied aufweisen.
  15. Eine Kraftstoffpumpe gemäß Anspruch 13 oder 14, in der die dritten Schubmittel (53) kalibriert sind, um den Verschluß (51) mit einer Kraft in der geschlossenen Position zu halten, die in allen Fällen niedriger ist, als die Kraft, die von dem in der zweiten Kammer (20) enthaltenen Öl auf den Verschluß (51) in der entgegengesetzten Richtung ausgeübt wird, wenn der Wert des Öldrucks innerhalb der zweiten Kammer (20) im wesentlichen gleich einem vorbestimmten Wert ist.
  16. Eine Kraftstoffpumpe gemäß einem der vorhergehenden Ansprüche, in der die zweite Kammer (20) mit einer Mehrzahl von Kanälen (42), die in der Wand (41) für den Durchgang des Öls vorgesehen sind, versehen ist.
EP04105725A 2003-11-25 2004-11-12 Kraftstoffpumpe für eine Brennkraftmaschine Not-in-force EP1536137B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04105725T PL1536137T3 (pl) 2003-11-25 2004-11-12 Pompa paliwowa do silnika spalinowego

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITBO20030712 ITBO20030712A1 (it) 2003-11-25 2003-11-25 Pompa carburante per un motore a combustione interna.
ITBO20030712 2003-11-25
ITBO20040141 2004-03-12
ITBO20040141 ITBO20040141A1 (it) 2004-03-12 2004-03-12 Pompa carburante per un motore a combustione interna

Publications (2)

Publication Number Publication Date
EP1536137A1 EP1536137A1 (de) 2005-06-01
EP1536137B1 true EP1536137B1 (de) 2006-10-25

Family

ID=34466446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04105725A Not-in-force EP1536137B1 (de) 2003-11-25 2004-11-12 Kraftstoffpumpe für eine Brennkraftmaschine

Country Status (9)

Country Link
US (1) US20050207912A1 (de)
EP (1) EP1536137B1 (de)
CN (1) CN100572792C (de)
AT (1) ATE343725T1 (de)
BR (1) BRPI0405310A (de)
DE (1) DE602004002920T2 (de)
ES (1) ES2273166T3 (de)
PL (1) PL1536137T3 (de)
PT (1) PT1536137E (de)

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DE102004057688A1 (de) * 2004-11-30 2006-06-01 Robert Bosch Gmbh Membranpumpe und Membranpumpenmembran
US7677155B2 (en) 2006-01-13 2010-03-16 Gm Global Technology Operations, Inc. Statically sealed high pressure fuel pump and method
US7861682B2 (en) * 2007-10-25 2011-01-04 Ford Global Technologies, Llc Systems and methods for managing camshaft torsional loading
GB2470348B (en) * 2009-04-29 2011-06-08 Flotronic Pumps Ltd Double-diaphragm pump with unidirectional valve arrangement
RU2510466C2 (ru) * 2009-09-30 2014-03-27 Бомбардир Рекриейшнл Продактс Инк. Электронный масляный насос
CN102278587B (zh) * 2011-07-07 2014-10-08 北京中清能发动机技术有限公司 往复-旋转运动转换机构的机油泵、机油泵本体及设备
CN102536568A (zh) * 2012-02-08 2012-07-04 武汉科技大学 一种二甲醚发动机用直列隔膜式加压泵
JP5871742B2 (ja) * 2012-07-30 2016-03-01 本田技研工業株式会社 内燃機関の燃料供給装置
ITRM20130459A1 (it) * 2013-08-05 2015-02-06 Seko Spa Pompa autocalibrante con ritorno a molla, in particolare pompa dosatrice autocalibrante con ritorno a molla
CN104533777A (zh) * 2014-12-30 2015-04-22 米顿罗工业设备（上海）有限公司 一种金属隔膜破裂检测结构
DE102016015110A1 (de) * 2016-12-20 2018-06-21 Fresenius Medical Care Deutschland Gmbh Verdrängerpumpe für medizinische Flüssigkeiten und Blutbehandlungsvorrichtung mit einer Verdrängerpumpe für medizinische Flüssigkeiten sowie Verfahren zur Steuerung einer Verdrängerpumpe für mediizinische Flüssigkeiten
EP4028164A4 (de) * 2019-10-18 2022-10-05 Healtell (Guangzhou) Medical Technology Co., Ltd. Mikrofluidische chip-pumpen und verfahren dafür
CN112761842A (zh) * 2020-12-29 2021-05-07 余姚市舒春机械有限公司 一种电喷柴油机一体式燃油泵

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GB849557A (en) * 1955-09-22 1960-09-28 Reiners Walter Improvements in or relating to diaphragm pumps
US4791535A (en) * 1988-02-11 1988-12-13 Sclafani Vincent J Security device for fog lights
JPH062664A (ja) * 1992-06-22 1994-01-11 Nippon Soken Inc ダイアフラム式ポンプ
US6071089A (en) * 1998-02-20 2000-06-06 General Motors Corporation Hydraulic diaphragm pump
DE19826610A1 (de) * 1998-06-16 1999-12-23 Bran & Luebbe Membranpumpe und Vorrichtung zur Steuerung derselben
JP4627603B2 (ja) * 2001-03-15 2011-02-09 日立オートモティブシステムズ株式会社 燃料供給装置

Also Published As

Publication number Publication date
EP1536137A1 (de) 2005-06-01
PL1536137T3 (pl) 2007-01-31
ES2273166T3 (es) 2007-05-01
BRPI0405310A (pt) 2005-07-19
DE602004002920D1 (de) 2006-12-07
CN1621677A (zh) 2005-06-01
ATE343725T1 (de) 2006-11-15
PT1536137E (pt) 2007-01-31
DE602004002920T2 (de) 2007-04-26
CN100572792C (zh) 2009-12-23
US20050207912A1 (en) 2005-09-22

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