EP2274519B1 - Pompe à liquide de refroidissement régulable et procédé pour sa régulation - Google Patents

Pompe à liquide de refroidissement régulable et procédé pour sa régulation Download PDF

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Publication number
EP2274519B1
EP2274519B1 EP09745442.5A EP09745442A EP2274519B1 EP 2274519 B1 EP2274519 B1 EP 2274519B1 EP 09745442 A EP09745442 A EP 09745442A EP 2274519 B1 EP2274519 B1 EP 2274519B1
Authority
EP
European Patent Office
Prior art keywords
housing
piston
pump
working
sleeve
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
EP09745442.5A
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German (de)
English (en)
Other versions
EP2274519A1 (fr
Inventor
Eugen Schmidt
Franz Pawellek
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.)
Nidec GPM GmbH
Original Assignee
Nidec GPM 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 Nidec GPM GmbH filed Critical Nidec GPM GmbH
Publication of EP2274519A1 publication Critical patent/EP2274519A1/fr
Application granted granted Critical
Publication of EP2274519B1 publication Critical patent/EP2274519B1/fr
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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0038—Varying behaviour or the very pump by varying the effective cross-sectional area of flow through the rotor
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • F04B23/106—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being an axial piston pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/60—Control system actuates means
    • F05D2270/64—Hydraulic actuators

Definitions

  • the invention relates to a controllable coolant pump and a method for controlling this controlled via a pulley coolant pump for internal combustion engines.
  • the cylinder head in order to bring the exhaust gas temperature as fast as possible to the desired level, during the cold start phase, the cylinder head should not be flowed through by coolant.
  • controllable coolant pumps driven by the crankshaft of the internal combustion engine via pulleys are also described in which the impeller is shiftably driven (for example via a friction pairing) by the pump shaft.
  • the impeller is shiftably driven (for example via a friction pairing) by the pump shaft.
  • the drive of the coolant pump is disengaged during cold start of the engine by means of these designs.
  • the invention is therefore based on the object to develop a controllable coolant pump and a method for controlling this controlled via a pulley coolant pump (with valve spool) for internal combustion engines, which eliminates the aforementioned disadvantages of the prior art, on the one hand by "zero leakage" a ensures optimal warming of the engine and also on the other hand after engine warming the engine temperature in continuous operation is able to influence so accurately that in the entire working range of the engine both the Pollutant emission as well as the friction losses and fuel consumption can be significantly reduced, and also allows even with very limited installation space for the coolant pump in the engine compartment and very low drive power reliable actuation of the valve spool, and even in case of failure of the control further functioning of the coolant pump (Fail-safe) ensures, in addition, by a manufacturing and assembly technology very simple, cost-effective, "standardizable" for different pump sizes optimally occupy the space available in the engine compartment space exploiting design, doing no factory air-free filling requires, also always high reliability and Reli
  • this object is achieved by an apparatus and a method for controlling a driven via a pulley coolant pump for internal combustion engines according to the features of the independent claims of the invention.
  • FIG. 1 is the inventive variable coolant pump in the side view in section, with the position of the valve spool in its rear end position (ie in the working position "OPEN").
  • impeller 5 In this design is on a pump housing 1, in a pump bearing 2 driven by a pulley 3 pump shaft 4 with a on a free, flow-side end of this pump shaft 4 rotatably arranged impeller 5 is arranged.
  • a pressure-actuated, spring-loaded by a return spring 6 valve spool with a rear wall 7 and the outflow of the impeller 5 variably overlapping outer cylinder 9 is arranged in the pump interior.
  • a shaft seal 11 is disposed between the impeller 5 and the pump bearing 2 in a seal receptacle 10.
  • a working housing 12 is arranged on the pump housing 1 and the housing of an electromagnetic actuator 13 is arranged thereon, wherein a working sleeve 14 is arranged in the working housing 12.
  • This is pump shaft side in the working housing 12 adjacent to a pressure chamber 15 which opens via a pressure channel 16 in an annular channel 17, which in one of the seal holder 10 on the impeller side opposite in the pump housing 1 arranged sleeve receptacle 18, rotationally symmetrical to the axis of rotation of the pump shaft 4 is incorporated.
  • the housing of the actuator 13 and the working sleeve 14 are made of one piece.
  • annular piston working sleeve 19 is arranged with a sealing web 20 and a bottom 21 in which the pump shaft 4 rotates freely.
  • flow openings 23 are arranged to the annular channel 18 near the bottom.
  • the inner wall 24 of the annular piston working sleeve 19 is fastened in a force-locking manner to a position securing sleeve 25 with a rigidly arranged wall plate 26.
  • a profile sealing ring 27th is arranged. This is on the wing wheel side positively connected to a provided with a web system 28 annular piston 29.
  • the rear wall 7 of the valve slide is arranged in a form-fitting manner in the end region of the wing wheel.
  • the restoring spring 6 is arranged between the wall plate 26 and the rear wall 7 of the valve slide resting against the annular piston 29.
  • a bypass seal 30 is arranged with an elastomer sealing lip, which prevents a pressure build-up between the wall plate 26 and the rear wall 7 of the valve spool with the resulting bypass leakage at "closed" valve spool.
  • the primary seal is ensured between the end face of the outer cylinder 9 and the associated counter surface in the spiral housing.
  • the function of "zero leakage" (zero promotion) can be optimally realized with minimal power consumption to functionally reliable and reliable to set the coolant flow during the warm-up phase of the engine completely shut down if necessary.
  • a working chamber 31 adjacent to the pressure chamber 15 is arranged in the working sleeve 14, wherein an outlet valve membrane 32 provided with a perforated diaphragm is arranged between the working chamber 31 and the pressure chamber 15.
  • a working piston 34 arranged on a piston rod 33 is arranged linearly displaceably in the working chamber 31.
  • an annular groove 35 with through-holes 36 is arranged on the working space side.
  • the annular groove 35 is adjacent to the working piston 34 also a working piston arranged on the working piston 34, provided with a pinhole intake valve membrane 37 is attached.
  • a compression spring system 38 is arranged on the working sleeve 14.
  • a rod seal 39 enclosing the piston rod 33 is arranged between the working chamber 31 and the compression spring system 38.
  • an inflow space 40 is arranged in the wall of which inflow openings 41 are arranged, which lead into a arranged between the working housing 12 and the working sleeve 14 annulus 43, with the pump interior. 8 connected via one or more inlet bores 42.
  • a filter element 44 is arranged between the annular space 43 and the inflow openings 41.
  • a magnet armature 45 is disposed on the end of the piston rod 33 opposite the working piston 34 and is guided linearly displaceably in the actuator 13 in the magnetic field of a magnet coil 46 arranged in a housing of the actuator 13 in a coil receptacle. It is also characteristic that a compression spring 49 is arranged between the pressure spring system 38 arranged on the working sleeve 14 and a spring receptacle 47 arranged on the magnet armature 45, in a spring chamber 48.
  • an armature stop 50 is preferably arranged with damping element / s in the actuator.
  • an inlet opening 51 leading into the area of the spring chamber 48 and in the armature 45, in the anchor stop 50 and in the housing of the actuator 13 each adjacent / merging outflow openings 52 are arranged.
  • the rod seal 39 separates the area of the actuator leading to the coolant from an area filled with air (“dry"), the inflow opening 51 and outflow openings 52 allow free gas exchange with the environment, thereby providing a low-friction translational movement of the armature 45 in the area the solenoid 46 is ensured.
  • the inventive method for influencing the flow rate of the described in the, in the FIG. 1 illustrated controllable coolant pump is characterized by the fact that by varying the current intensity and / or the duration of the current applied to the solenoid current pulses in the magnetic field 46 acting on the magnet armature 45 force is varied, so that in conjunction with the action of the compression spring 49 on the Magnetic armature 45, the frequency and / or the stroke (the amplitude) of the oscillations of the working piston defined is / are varied so that the working piston 34 by means of the arranged at the opposite end of the piston rod 33 in the magnetic field of the magnetic coil 46 magnet armature 45 repeatedly (periodically), and is placed in defined translational oscillations.
  • This magnetic actuation causes in conjunction with the arrangement according to the invention in many small "part strokes” stocky “pump promotion", which then due to the special arrangement according to the invention has a displacement of the valve spool with its outer cylinder 9 and arranged on these assemblies.
  • the functional principle according to the invention thus ensures, for the first time with minimal installation space, very low weight, an optimal air gap and an optimized force-stroke ratio by means of the special arrangement according to the invention achieving arbitrarily large actuation forces and working strokes on the valve slide with its profile seal 27, its annular piston 29, its rear wall 7 , its outer cylinder 9 and all arranged on these components according to the invention assemblies.
  • the regulation of the flow rate of the coolant pump according to the invention is effected in that on the one hand working space on the working piston 34, an annular groove 35 is disposed with through holes 36, and that also the working space side, as in FIG. 1 represented, on the working piston 34 is provided with a perforated aperture inlet valve membrane 37 is arranged.
  • an outlet valve membrane 32 is provided which is provided with a pinhole. If now the working piston 34 (as described above) vibrated, so is sucked from the via the inlet bore 42 to the pump interior 8 annular space 43 coolant through the filter element 44 through the inflow openings 41 into the inflow 40 in, and at the same time through the Through holes 36 of the working piston 34 in the working piston arranged on the annular groove 35 and from there Pressed over the provided with a pinhole inlet valve diaphragm 37 into the working space 31, and then introduced from there via the provided with a pinhole exhaust valve membrane 32 into the pressure chamber 15.
  • the solution of the present invention which can be easily standardized and manufactured cost-effectively, ensures high pump and motor efficiency with a minimum use of energy (which is less than 5 W).
  • the "neutral" construction according to the invention makes it possible for the actuator 13 according to the invention to be used as a standardized component in various water pumps.
  • the actuating unit according to the invention which due to the superposition of a "pumped flow” with a “leakage flow” a space-optimized, compact, manufacturing and assembly technically simple as well as very cost-effective and very robust solution, thus allowing a reliable operation of the valve spool even with very strong limited installation space (for the actuator of the coolant pump).
  • Another advantage of the solution according to the invention consists in the fact that the filter element 44 does not have to be exchanged during the entire service life, since only very small volume flows (and these always only “down” and then back again) are exchanged via the filter element 44 become.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Claims (7)

  1. Pompe à liquide de refroidissement régulable avec un carter de pompe (1), un arbre de pompe (4) placé dans/sur le carter de pompe (1), logé dans un palier de pompe (2) et entraîné par une poulie (3), une roue à palettes (5) fixe en rotation placée sur une extrémité libre de cet arbre de pompe (4) en direction du courant, une valve navette commandée par pression, disposée dans l'espace intérieur de pompe (8), soumise à un ressort de rappel (6), avec une paroi arrière (7) et un cylindre extérieur (9) recouvrant de manière variable la zone d'éjection de la roue à palettes (5) ainsi qu'un joint tournant (11) placé dans un logement de joint (10) et disposé dans le carter de pompe (1) entre la roue à palettes (5) et le palier de pompe (2), caractérisée par le fait
    - qu'un carter de travail (12) est disposé sur le carter de pompe (1) et que le carter d'un actionneur électromagnétique (13) est placé sur le carter de travail (12), une douille de travail (14) étant disposée dans le carter de travail (12), une chambre de compression (15) étant située au voisinage de la douille de travail (14) dans le carter de travail (12) du côté de l'arbre de pompe, la chambre de compression (15) débouchant au dessus d'un canal de pression (16) dans un canal annulaire (17), lequel étant intégré de manière rotosymétrique par rapport à l'axe de rotation de l'arbre de pompe (4) dans un logement de douille (18) situé dans le carter de pompe (1) vis-à-vis du logement de joint (10) du côté de la roue à palettes,
    - qu'une douille de travail de piston annulaire (19) est disposée dans le logement de douille (18) avec une traverse d'étanchéité (20) et un fond (21), dans laquelle l'arbre de pompe (4) tourne librement et présentant des orifices d'écoulement (23) vers le canal annulaire (17) situés dans la paroi extérieure (22) à proximité du fond (21), une douille de sécurisation de position (25) avec un disque de paroi (26) placé fixement dessus par complémentarité de forme et/ou de force étant disposée à l'extrémité du côté de la roue à palettes sur la paroi intérieure (24) de douille de travail de piston annulaire (19) surplombant significativement la paroi extérieure (22),
    - qu'un joint d'étanchéité profilé (27) est disposé de manière mobile dans la douille de travail de piston annulaire (19), du fond (21) de douille de travail de piston annulaire (19), à une distance correspondant environ au diamètre des orifices d'écoulement (23), ce joint d'étanchéité profilé (27) étant relié par complémentarité de forme du côté de la roue à palettes à un piston annulaire (29) pourvu d'un dispositif de traverse (28), dans laquelle zone finale du côté de la roue à palettes la paroi arrière (7) de la valve navette est disposée,
    - que le ressort de rappel (6) est disposé entre le disque de paroi (26) et le piston annulaire (29) ou bien entre le disque de paroi (26) et la paroi arrière (7) de valve navette reposant sur le piston annulaire (29),
    - qu'un joint by-pass (30) est disposé sur la paroi externe du disque de paroi (26),
    - qu'un espace de travail (31) est disposé dans la douille de travail (14) au voisinage de la chambre de compression (15), une membrane de soupape d'échappement (32) pourvue d'un diaphragme étant disposée entre l'espace de travail (31) et la chambre de compression (15),
    - qu'un piston de travail (34) situé dans l'espace de travail (31) et placé sur une tige de piston (33) est disposé de manière à être linéairement mobile, une rainure annulaire (35) pourvue d'orifices de passage (36) étant disposée sur ce piston de travail (34) du côté de l'espace de travail, et en outre une membrane de soupape d'admission (37) pourvue d'un diaphragme et fixée sur le piston de travail (34) du côté de l'espace de travail,
    - qu'un dispositif de ressort de rappel (38) est disposé sur la douille de travail (14) vis-à-vis de l'espace de travail (31),
    - que, entre l'espace de travail (31) et le dispositif de ressort de rappel (38), un joint de tige (39) enveloppant la tige de piston (33) est disposé,
    - que, entre l'espace de travail (31) et le joint de tige (39) dans la douille de travail (14), un espace d'admission (40) est disposé avec des orifices d'afflux (41) placés dans son enveloppe et débouchant dans un espace annulaire (43) disposé entre le carter de travail (12) et la douille de travail (14), lequel espace annulaire (43) étant relié à l'espace intérieur de pompe (8) au moyen d'un ou de plusieurs orifices d'admission (42), un élément filtrant (44) étant disposé entre l'espace annulaire (43) et les orifices d'afflux (41),
    - que, sur l'extrémité de tige de piston (33) vis-à-vis du piston de travail (34), un induit magnétique (45) est disposé, celui-ci étant introduit dans le champ magnétique d'une bobine magnétique (46) mobile de manière linéaire dans l'actionneur (13) et disposée dans un logement de bobine dans le carter de l'actionneur (13),
    - que, entre le dispositif de ressort de rappel (38) disposé sur la douille de travail (14) et un logement de ressort (47) disposé sur l'induit magnétique (45), un ressort de pression (49) est disposé dans une chambre de ressort (48),
    - qu'une butée d'induit (50) est disposée dans l'actionneur (13), au voisinage de l'induit magnétique (45),
    - que, dans le carter de l'actionneur (13), un/plusieurs orifices d'afflux (51) conduisant dans la zone de chambre de ressort (48) est/sont disposé/s, tout comme sont disposés dans l'induit magnétique (45), dans la butée d'induit (50) et dans le carter de l'actionneur (13) des orifices d'échappement (52) voisins les uns des autres.
  2. Procédé de régulation d'une pompe à liquide de refroidissement selon l'exigence 1 caractérisé par le fait que la quantité convoyée de la pompe à liquide de refroidissement est régulée de manière définie par le déplacement de la valve navette au moyen d'une variation de l'amplitude et/ou de la fréquence des oscillations du piston de travail (34).
  3. Pompe à liquide de refroidissement régulable selon l'exigence 1 caractérisée par le fait que le carter de l'actionneur (13) et la douille de travail (14) sont fabriqués ensemble à partir d'une pièce commune.
  4. Pompe à liquide de refroidissement régulable selon l'exigence 1 caractérisée par le fait que le joint d'étanchéité profilé (27) est intégré dans une rainure d'entraînement positionnée et attribuée au piston annulaire (29).
  5. Pompe à liquide de refroidissement régulable selon l'exigence 1 caractérisée par le fait qu'une bague d'étanchéité est disposée entre la traverse d'étanchéité (20) et le carter de pompe (1).
  6. Pompe à liquide de refroidissement régulable selon l'exigence 1 caractérisée par le fait que, dans le carter de l'actionneur (13), un/plusieurs orifice/s d'afflux (51) conduisant dans la zone de chambre de ressort (48) est/sont disposé/s, tout comme sont disposés dans l'induit magnétique (45), dans la butée d'induit (50) et dans le carter de l'actionneur (13) des orifices d'échappement (52) voisins les uns des autres.
  7. Procédé de régulation d'une pompe à liquide de refroidissement selon l'exigence 2 caractérisé par le fait que, au moyen d'une variation de l'intensité électrique et/ou de la durée d'impulsions électriques appliquées à la bobine magnétique (46), la force agissante dans le champ magnétique sur l'induit magnétique (45) est variée, de telle manière que, en association avec l'action du ressort de pression (49) sur l'induit magnétique (45), la fréquence et/ou la course (l'amplitude) des oscillations du piston de travail (34) soient variées de manière définie, de telle manière que le piston de travail (34) soit déplacé (de manière répétitive/périodique) et mis en mouvement oscillatoire défini en translation au moyen de l'induit magnétique (45) disposé dans le champ magnétique de la bobine magnétique (46) et placé à l'extrémité opposée de la tige de piston (33).
EP09745442.5A 2008-05-10 2009-05-07 Pompe à liquide de refroidissement régulable et procédé pour sa régulation Not-in-force EP2274519B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008022354A DE102008022354B4 (de) 2008-05-10 2008-05-10 Regelbare Kühlmittelpumpe und Verfahren zu deren Regelung
PCT/DE2009/000640 WO2009138058A1 (fr) 2008-05-10 2009-05-07 Pompe à liquide de refroidissement régulable et procédé pour sa régulation

Publications (2)

Publication Number Publication Date
EP2274519A1 EP2274519A1 (fr) 2011-01-19
EP2274519B1 true EP2274519B1 (fr) 2015-11-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09745442.5A Not-in-force EP2274519B1 (fr) 2008-05-10 2009-05-07 Pompe à liquide de refroidissement régulable et procédé pour sa régulation

Country Status (7)

Country Link
US (1) US8628295B2 (fr)
EP (1) EP2274519B1 (fr)
JP (1) JP5582653B2 (fr)
CN (1) CN102027239B (fr)
BR (1) BRPI0911953A2 (fr)
DE (1) DE102008022354B4 (fr)
WO (1) WO2009138058A1 (fr)

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DE102008026218B4 (de) * 2008-05-30 2012-04-19 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe
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DE102011004172B3 (de) * 2011-02-15 2012-03-01 Schwäbische Hüttenwerke Automotive GmbH Kühlmittelpumpe mit verstellbarem Fördervolumen
DE102011012827B3 (de) * 2011-03-02 2012-04-19 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Vorrichtung u. Verfahren zur definierten Längsverschiebung einer in einer Antriebswelle mitdrehenden Verstellvorrichtung
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DE102013018205B3 (de) * 2013-10-30 2014-06-18 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe
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CN106536939B (zh) 2014-07-21 2019-09-06 尼得科Gpm有限公司 具有集成闭环控制的冷却剂泵
DE102015109966B3 (de) * 2015-06-22 2016-06-16 Nidec Gpm Gmbh Kühlmittelpumpe mit integrierter Regelung
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DE102008022354B4 (de) 2012-01-19
WO2009138058A1 (fr) 2009-11-19
US20110188987A1 (en) 2011-08-04
CN102027239A (zh) 2011-04-20
EP2274519A1 (fr) 2011-01-19
DE102008022354A1 (de) 2009-11-12
BRPI0911953A2 (pt) 2015-10-13
JP2011520061A (ja) 2011-07-14
CN102027239B (zh) 2014-06-04
US8628295B2 (en) 2014-01-14
JP5582653B2 (ja) 2014-09-03

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