EP2406498B1 - Controllable coolant pump - Google Patents

Controllable coolant pump Download PDF

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Publication number
EP2406498B1
EP2406498B1 EP10712884.5A EP10712884A EP2406498B1 EP 2406498 B1 EP2406498 B1 EP 2406498B1 EP 10712884 A EP10712884 A EP 10712884A EP 2406498 B1 EP2406498 B1 EP 2406498B1
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EP
European Patent Office
Prior art keywords
pump
pump housing
fact
bearing
actuator
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Not-in-force
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EP10712884.5A
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German (de)
French (fr)
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EP2406498A1 (en
Inventor
Eugen Schmidt
Toni Steiner
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Nidec GPM GmbH
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Nidec GPM GmbH
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Publication of EP2406498A1 publication Critical patent/EP2406498A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps
    • 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
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps

Definitions

  • the invention relates to a controlled via a pulley controllable coolant pump for internal combustion engines in the design of a controllable axial pump.
  • centrifugal pumps designed as radial pumps are used, in which the coolant flowing axially into an impeller is deflected in the radial direction.
  • Controllable coolant pumps in the design of controllable radial pumps are used, for example, in the DE 10 2007 022 189 A1 as well as in the DE 10 2005 056 199 A1 described above.
  • controllable coolant pumps for internal combustion engines in the design of controllable axial pumps were also by the applicant in the DE 102 07 653 C1 as well as in the DE 103 14 526 B4 presented.
  • a coolant pump designed as a controllable axial pump has become known for the cooling circuit of an internal combustion engine, in which the flow rate of the coolant is realized by the pump without electrical or electronic speed control.
  • the coolant pump designed as a controllable axial pump has a hollow shaft driven by a toothed belt pulley, on which a plurality of rotor blades are non-rotatably arranged in such a way that that their angle of attack can be adjusted mechanically via an operating mechanism arranged within the hollow shaft.
  • the actuation of the mechanical adjusting mechanism takes place via an actuating element, which can be controlled electrically, electronically, hydraulically or pneumatically.
  • the coolant flowing through the pump housing is more or less accelerated.
  • the cooling power as well as the drive power of the coolant pump can be varied within certain limits, the transmittable torque is always limited by the "resilience / durability" of the adjustably mounted rotor blades.
  • the cylinder head should by no means flow through coolant to bring the exhaust gas temperature as fast as possible to the desired level.
  • the invention is therefore based on the object to develop a driven via a pulley controllable coolant pump in the design of a controllable axial pump for internal combustion engines, which avoids the aforementioned disadvantages of the prior art and allows active control of the coolant flow on the one hand by "zero leakage"
  • the novel design transmit a high torque with minimal construction volume, ensure continued functioning of the coolant pump (fail-safe) in the event of failure of the control, and also on the maximum temperature load for the electrical components or the electronic component be independent and thereby by a very compact, production and assembly technology Distinguish simple, cost-effective and robust design, as well as avoid cavitation phenomena and turbulence of the flow rate, have high efficiency and ensure high reliability and reliability for a very long life even with loaded with dirty cargo coolant.
  • this object is achieved by a driven via a pulley controllable coolant pump in the design of a controllable axial flow pump for internal combustion engines according to the features of the independent claim 1 of the invention.
  • FIG. 1 is a possible variant of the invention, driven by a pulley controllable coolant pump in the design of an axial pump with a pneumatic actuator used for controlling the flow rate as actuator 21 (in the side view, in section).
  • a pulley 5 is rotatably supported by a pump bearing 4 on a pump housing 1 with a flow inlet opening 2 and a flow outlet opening 3.
  • a pump shaft 6 is connected to an axial blade 7 is also arranged rotationally fixed.
  • a stator 8 is rotatably arranged according to the invention, in which a bearing receptacle 9 for a second bearing 10 of the pump shaft 6 is located.
  • this bearing 10 is a sliding bearing in which the pump shaft 6 is mounted with its pulley 5 opposite pump shaft end.
  • this arrangement causes an optimal, uniform, turbulence-free "flow around" the (provided on the stator 8) cylinder jacket Abströmleitkegels 14 at maximum throughput and minimal pressure loss is ensured in the pump interior, which is an essential condition for optimal control of the flow represents the coolant pump according to the invention.
  • a valve working chamber 16 is arranged, in which the provided with a ring land 15 Abströmleitkegel 14 of the stator 8 protrudes, wherein on the pump housing 1, the bearing point of the pump bearing 4 in the flow direction opposite, a piston rod guide 17 with an actuator mounting flange 18th is arranged.
  • a piston rod 19 projecting into the pump housing 1 is displaceably mounted in this piston rod guide 17, wherein an actuator 21, which effects a linear displacement of the piston rod 19 and is provided with a return device 20, acts on the end region of the piston rod 19 located outside the pump housing 1 arranged on the pump housing 1 Aktuatorbefest Trentsflansch 18 is arranged.
  • the pump housing 1 is designed in such a multi-part, that a versor with the Aktuatorbefest Trentsflansch 18 rear area of the pump housing 1 is flanged to a "still" provided with the valve working space 16 front portion of the pump housing 1.
  • a sliding work chamber 16 is displaceably arranged linearly, with an outflow guide 23, an outflow opening 24, and sealingly engaged in operative connection with the annular web 15 on the outflow guide cone 14, the guide wheel 8 Ring groove 25 provided axial slide 22 is attached.
  • an active control of the coolant flow rate is enabled by means of this arrangement, which on the one hand by "zero leakage", ie ensured on the annular web 15 of the stator 8 sealingly applied annular groove 25 of the axial slide 22, optimum heating of the engine, and on the other hand Heating of the engine, by a defined displacement of the axial slide 22 in the valve working chamber 16 of the pump housing 1, the engine temperature in continuous operation is able to influence exactly so 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.
  • this solution according to the invention is independent of the maximum temperature load for the electrical components or the electronic components, since no electrical components or electronic components that come into contact with the delivery volume flow are used inside the pump.
  • the flow defined influencing assemblies (such as the Vorleitrad 12 with the inflow cone 13, the Axialschaufelrad 7, the stator 8 with Abströmleitkegel 14 and the axial slide 22 with the Ausströmleitkontur 23 and the outflow opening 24) their entirety, that in the coolant pump according to the invention cavitation phenomena as well as turbulence of the delivery volume flow are avoided, and that the coolant pump according to the invention has a high efficiency.
  • the proposed arrangement according to the invention due to its robust construction, ensures that even with a load of coolant laden with coolant, a high level of operational safety and reliability is ensured over a very long service life.
  • this spacer bar 36 ensures a "free run" of the axial blade wheel 7 when the guide wheel 12 bears against the outer jacket 35 of the stator 8.
  • the preliminary guide wheel 12 (for example made of plastic) is pushed into the front region of the pump housing 1 until it engages with the guide wheel installation web 34, so that after assembly of the axial blade wheel 7 the guide wheel 12 is pushed in by the press-fitting of the outer jacket 35 of the stator 8 in the pump housing 1 (by the arranged on the outer casing 35 of the stator 8 distance web 36) is secured axially in position.
  • the radial securing is taken over by latching lugs which come into operative connection with one another and which are arranged on the components to be joined together.
  • the invention also provides that a feed flange 26 and a drain flange 27 are arranged on the pump housing 1, which are arranged "unwound" in relation to the arranged in the pump housing 1 valve working chamber 16.
  • seals 31 and leakage outlet openings 32 are arranged to ensure high reliability.
  • FIG. 2 is a further variant of the invention, driven by a pulley controllable coolant pump in the design of an axial pump in the side view in section.
  • a linear motor 30 is used as the actuator 21 for the defined actuation of the axial slide 22.
  • controllable coolant pump according to the invention is used in particular when in the respective vehicle type (in which the coolant pump according to the invention is to be used) no negative pressure is present, or if the existing negative pressure is insufficient to move the axial slide 22 functionally reliable.

Description

Die Erfindung betrifft eine über eine Riemenscheibe angetriebene regelbare Kühlmittelpumpe für Verbrennungsmotore in der Bauform einer regelbaren Axialpumpe.The invention relates to a controlled via a pulley controllable coolant pump for internal combustion engines in the design of a controllable axial pump.

Im Stand der Technik sind eine Vielzahl von regelbaren Kühlmittelpumpen für Verbrennungsmotore vorbeschrieben, welche über Riemenscheiben von der Kurbelwelle des Verbrennungsmotors angetrieben werden.In the prior art, a plurality of controllable coolant pumps for internal combustion engines are described, which are driven by pulleys from the crankshaft of the internal combustion engine.

Zumeist werden kleine als Radialpumpen ausgebildete Kreiselpumpen eingesetzt, bei denen das axial in ein Pumpenrad einströmende Kühlmittel in radialer Richtung umgelenkt wird.In most cases, small centrifugal pumps designed as radial pumps are used, in which the coolant flowing axially into an impeller is deflected in the radial direction.

Regelbare Kühlmittelpumpen in der Bauform von regelbaren Radialpumpen werden beispielsweise in der DE 10 2007 022 189 A1 wie auch in der DE 10 2005 056 199 A1 vorbeschrieben.Controllable coolant pumps in the design of controllable radial pumps are used, for example, in the DE 10 2007 022 189 A1 as well as in the DE 10 2005 056 199 A1 described above.

Infolge der Umlenkung des axial einströmenden Kühlmittels treten bei diesen Kühlmittelpumpen zwangsläufig Strömungsverluste auf.As a result of the deflection of the axially flowing coolant occur in these coolant pumps inevitably flow losses.

Von der Anmelderin wurde in der DE 100 47 387 A1 eine in der Praxis bereits bewährte, elektrisch angetriebene, regelbare Kühlmittelpumpe für Verbrennungsmotore in der Bauform einer regelbaren Axialpumpe vorgestellt.The applicant was in the DE 100 47 387 A1 an already proven in practice, electrically driven, controllable coolant pump for internal combustion engines in the design of a controllable axial pump presented.

Weitere ebenfalls bereits in der Praxis bewährte, regelbare Kühlmittelpumpen für Verbrennungsmotore in der Bauform von regelbaren Axialpumpen wurden von der Anmelderin zudem in der DE 102 07 653 C1 wie auch in der DE 103 14 526 B4 vorgestellt.Other also already proven in practice, controllable coolant pumps for internal combustion engines in the design of controllable axial pumps were also by the applicant in the DE 102 07 653 C1 as well as in the DE 103 14 526 B4 presented.

Die Nachteile dieser elektromotorisch angetriebenen Kühlmittelpumpen mit innerhalb des Kühlmittelstromes angeordneten Elektromotoren resultieren nicht zuletzt aus dem erhöhten Bauraumbedarf dieser Kühlmittelpumpen. Bauraumbedingt können daher die jeweils eingesetzten Elektromotoren stets nur begrenzte Drehmomente übertragen.The disadvantages of these electric motor driven coolant pumps with arranged within the coolant flow electric motors result not least from the increased space requirement of these coolant pumps. Due to space constraints, therefore, the particular electric motors used can always transmit only limited torques.

Zudem hat auch die zwangsläufig erforderliche, wasserdichte Kapselung der Elektromotoren höhere Fertigungskosten zur Folge.In addition, the necessarily required, waterproof encapsulation of the electric motors has higher production costs.

Darüber hinaus sind bei diesen Lösungen, infolge der eingesetzten elektrischen Bauteile bzw. der elektronischen Komponenten, stets obere Grenzwerte der Temperaturbelastung einzuhalten um ein Versagen dieser Bauteile zu vermeiden.In addition, in these solutions, due to the electrical components used or the electronic components, always comply with upper limits of the temperature load to avoid failure of these components.

Zudem kann mittels dieser elektromotorisch angetriebenen Kühlmittelpumpen nach einem "Stromausfall" auch kein "Fail-safe" (Weiterfunktionieren der Kühlmittelpumpe nach Ausfall der Regelung) gewährleistet werden.In addition, no "fail-safe" (continued functioning of the coolant pump after failure of the control) can be ensured by means of these electric motor driven coolant pumps after a "power failure".

Auch haben die Axialpumpen mit saugseitiger Drosselung (wie beispielsweise die in der DE 102 07 653 C1 vorgestellte Bauform) gezeigt, dass sie strömungstechnisch verbesserungsbedürftig sind, da verstärkt Kavitationserscheinungen und Verwirbelungen auftraten, welche dann einen erhöhten Verschleiß und auch Leistungsverluste zur Folge hatten.Also have the axial pumps with suction-side throttling (such as those in the DE 102 07 653 C1 presented design) showed that they are fluidly in need of improvement, as increasingly cavitation phenomena and turbulence occurred, which then had an increased wear and power losses.

Aus der DE 10 2006 034 952 B4 ist weiterhin eine als regelbare Axialpumpe ausgebildete Kühlmittelpumpe für den Kühlkreislauf einer Verbrennungskraftmaschine bekannt geworden, bei der die Durchflussmenge des Kühlmittels durch die Pumpe ohne elektrische oder elektronische Drehzahlregelung realisiert wird. Dabei weist die als regelbare Axialpumpe ausgebildete Kühlmittelpumpe eine von einer Zahnriemenscheibe angetriebene Hohlwelle auf, auf der drehfest mehrere Rotorschaufeln derart angeordnet sind, dass deren Anstellwinkel über einen innerhalb der Hohlwelle angeordneten Wirkmechanismus mechanisch verstellt werden kann.From the DE 10 2006 034 952 B4 furthermore, a coolant pump designed as a controllable axial pump has become known for the cooling circuit of an internal combustion engine, in which the flow rate of the coolant is realized by the pump without electrical or electronic speed control. In this case, the coolant pump designed as a controllable axial pump has a hollow shaft driven by a toothed belt pulley, on which a plurality of rotor blades are non-rotatably arranged in such a way that that their angle of attack can be adjusted mechanically via an operating mechanism arranged within the hollow shaft.

Die Betätigung des mechanischen Verstellmechanismus erfolgt dabei über ein Stellelement, welches elektrisch, elektronisch, hydraulisch oder auch pneumatisch angesteuert werden kann.The actuation of the mechanical adjusting mechanism takes place via an actuating element, which can be controlled electrically, electronically, hydraulically or pneumatically.

In Abhängigkeit vom Anstellwinkel der Rotorschaufeln wird das durch das Pumpengehäuse strömende Kühlmittel mehr oder weniger stark beschleunigt. Mittels der vorgenannten Kühlmittelpumpen, in der Bauform einer von einer Zahnriemenscheibe angetriebenen regelbaren Axialpumpe, kann die Kühlleistung wie auch die Antriebsleistung der Kühlmittelpumpen in bestimmten Grenzen variiert werden, wobei das übertragbare Drehmoment stets von der "Belastbarkeit/Haltbarkeit" der verstellbar gelagerten Rotorschaufeln begrenzt wird.Depending on the angle of attack of the rotor blades, the coolant flowing through the pump housing is more or less accelerated. By means of the aforementioned coolant pumps, in the design of a controlled by a belt pulley controllable axial flow, the cooling power as well as the drive power of the coolant pump can be varied within certain limits, the transmittable torque is always limited by the "resilience / durability" of the adjustably mounted rotor blades.

Dabei kann bei mit Schmutzfracht (beispielsweise Sandpartikel o.ä.) beladenem Kühlmittel diese den Verstellmechanismus beeinträchtigen und die Zuverlässigkeit der Regelung stark einschränken.In this case, when loaded with dirt load (for example, sand particles or the like) coolant this affect the adjustment mechanism and severely limit the reliability of the scheme.

Zudem kann mit der in der DE 10 2006 034 952 B4 vorbeschriebenen Bauform auch keine "Null-Leckage" realisiert werden.In addition, with the in the DE 10 2006 034 952 B4 above-described design also no "zero leakage" can be realized.

Im Zuge der stetigen Optimierung von Verbrennungsmotoren, insbesondere im Hinblick auf Emission und Kraftstoffverbrauch, ist es jedoch zunehmend wichtiger den Motor nach dem Kaltstart möglichst schnell auf Betriebstemperatur zu bringen, um einerseits die Reibungsverluste zu minimieren (mit zunehmender Öltemperatur sinkt dessen Viskosität und damit die Reibung an allen ölgeschmierten Bauteilen) und die Emissionswerte zu reduzieren (da erst nach der sogenannten "Anspringtemperatur" die Katalysatoren wirksam arbeiten, beeinflusst der Zeitraum bis zum Erreichen dieser Temperatur die Abgasemission wesentlich) um dadurch den Kraftstoffverbrauch zu reduzieren.In the course of the continuous optimization of internal combustion engines, in particular with regard to emissions and fuel consumption, it is increasingly important to bring the engine after the cold start as quickly as possible to operating temperature, on the one hand to minimize the friction losses (with increasing oil temperature decreases its viscosity and thus the friction on all oil-lubricated components) and to reduce the emission values (since the catalysts work effectively only after the so-called "light-off temperature", the period until this temperature is reached substantially influences the exhaust gas emission) in order to reduce fuel consumption.

Versuchsreihen in der Motorentwicklung haben gezeigt, dass eine sehr wirksame Maßnahme zur Motorerwärmung das "stehende Wasser" oder die "Null-Leckage" während der Kaltstartphase ist.Tests in engine development have shown that a very effective means of engine warming is "standing water" or "zero leakage" during the cold start phase.

Dabei sollte während der Kaltstartphase der Zylinderkopf keinesfalls von Kühlmittel durchströmt werden, um die Abgastemperatur so schnell wie möglich auf das gewünschte Niveau zu bringen.During the cold start phase, the cylinder head should by no means flow through coolant to bring the exhaust gas temperature as fast as possible to the desired level.

Von den Fahrzeugherstellern werden Leckageströme von weniger als 0,5 l/h ("Null-Leckage") gewünscht.Vehicle manufacturers demand leakage currents of less than 0.5 l / h ("zero leakage").

Auch haben Untersuchungen zum Kraftstoffverbrauch von Verbrennungsmotoren in Kraftfahrzeugen gezeigt, dass durch ein konsequentes Thermomanagement, also jene Maßnahmen, welche zu einem energetisch und thermomechanisch optimalen Betrieb eines Verbrennungsmotors führen, etwa 3% bis 5% Kraftstoff eingespart werden können.Also, studies on the fuel consumption of internal combustion engines in motor vehicles have shown that by consistent thermal management, ie those measures that lead to an energetically and thermo-mechanically optimal operation of an internal combustion engine, about 3% to 5% fuel can be saved.

Daher wird unter Beachtung dieser Gesichtspunkte eine immer präzisere Regelung des Kühlmitteldurchsatzes in Abhängigkeit von der Temperatur des durchgesetzten Kühlmittels zwingend erforderlich.Therefore, taking into account these aspects, an increasingly precise control of the coolant flow rate as a function of the temperature of the enforced coolant is absolutely necessary.

Der Erfindung liegt daher die Aufgabe zugrunde, eine über eine Riemenscheibe angetriebene regelbare Kühlmittelpumpe in der Bauform einer regelbaren Axialpumpe für Verbrennungsmotore zu entwickeln, welche die vorgenannten Nachteile des Standes der Technik vermeidet und eine aktive Steuerung der Kühlmittelfördermenge ermöglicht um einerseits durch "Null-Leckage" eine optimale Erwärmung des Motors zu gewährleisten und um andererseits nach der Erwärmung des Motors die Motortemperatur im Dauerbetrieb exakt so zu beeinflussen, dass im gesamten Arbeitsbereich des Motors sowohl die Schadstoffemission wie auch die Reibungsverluste und der Kraftstoffverbrauch deutlich reduziert werden können, zudem soll die neuartige Bauform bei minimalem Bauvolumen ein hohes Drehmoment übertragen, bei Ausfall der Regelung ein Weiterfunktionieren der Kühlmittelpumpe (Fail-safe) gewährleisten, zudem von der maximalen Temperaturbelastung für die elektrischen Bauteile bzw. die elektronischen Komponenten unabhängig sein und sich dabei durch eine sehr kompakte, fertigungs- und montagetechnisch einfache, kostengünstige und robuste Bauform auszeichnen, wie auch Kavitationserscheinungen und Verwirbelungen des Fördervolumenstromes vermeiden, einen hohen Wirkungsgrad aufweisen und selbst bei mit Schmutzfracht beladenem Kühlmittel eine hohe Betriebssicherheit und Zuverlässigkeit bei sehr langer Lebensdauer gewährleisten.The invention is therefore based on the object to develop a driven via a pulley controllable coolant pump in the design of a controllable axial pump for internal combustion engines, which avoids the aforementioned disadvantages of the prior art and allows active control of the coolant flow on the one hand by "zero leakage" To ensure optimum warming of the engine and on the other hand to influence the engine temperature in continuous operation after heating the engine exactly that both the pollutant emission and the friction losses and fuel consumption can be significantly reduced in the entire working range of the engine, also the novel design transmit a high torque with minimal construction volume, ensure continued functioning of the coolant pump (fail-safe) in the event of failure of the control, and also on the maximum temperature load for the electrical components or the electronic component be independent and thereby by a very compact, production and assembly technology Distinguish simple, cost-effective and robust design, as well as avoid cavitation phenomena and turbulence of the flow rate, have high efficiency and ensure high reliability and reliability for a very long life even with loaded with dirty cargo coolant.

Erfindungsgemäß wird diese Aufgabe durch eine über eine Riemenscheibe angetriebene regelbare Kühlmittelpumpe in der Bauform einer regelbaren Axialpumpe für Verbrennungsmotore nach den Merkmalen des unabhängigen Anspruches 1 der Erfindung gelöst.According to the invention, this object is achieved by a driven via a pulley controllable coolant pump in the design of a controllable axial flow pump for internal combustion engines according to the features of the independent claim 1 of the invention.

Vorteilhafte Ausführungen Einzelheiten und Merkmale der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung der erfindungsgemäßen Lösung in Verbindung mit den Zeichnungen zur erfindungsgemäßen Lösung.DETAILED DESCRIPTION Details and features of the invention emerge from the subclaims and the following description of the solution according to the invention in conjunction with the drawings for the solution according to the invention.

Nachfolgend wird die Erfindung an Hand von zwei Ausführungsbeispielen in Verbindung mit zwei dem jeweiligen Ausführungsbeispiel zugeordneten Figuren näher erläutert.The invention will be explained in more detail with reference to two exemplary embodiments in conjunction with two figures associated with the respective embodiment.

Es zeigen dabei:

Figur 1 :
die erfindungsgemäße über eine Riemenscheibe angetriebene regelbare Kühlmittelpumpe in der Bauform einer Axialpumpe mit einem Pneumatikaktuator 33, in der Seitenansicht, im Schnitt; und
Figur 2 :
die erfindungsgemäße über eine Riemenscheibe angetriebene regelbare Kühlmittelpumpe in der Bauform einer Axialpumpe mit einem als Aktuator 21 eingesetzten Linearmotor 30, in der Seitenansicht, im Schnitt.
It shows:
FIG. 1:
the inventive driven via a pulley controllable coolant pump in the design of an axial pump with a pneumatic actuator 33, in the side view, in section; and
FIG. 2:
the inventive driven via a pulley controllable coolant pump in the design an axial pump with a linear motor 30 used as an actuator 21, in the side view, in section.

In der Figur 1 ist eine mögliche Variante der erfindungsgemäßen, über eine Riemenscheibe angetriebenen regelbaren Kühlmittelpumpe in der Bauform einer Axialpumpe mit einem zur Volumenstromregelung als Aktuator 21 eingesetzten Pneumatikaktuator 33 (in der Seitenansicht, im Schnitt) dargestellt.In the FIG. 1 is a possible variant of the invention, driven by a pulley controllable coolant pump in the design of an axial pump with a pneumatic actuator used for controlling the flow rate as actuator 21 (in the side view, in section).

Diese Bauform wird in Verbindung mit einer Unterdruckregelung eingesetzt. Dabei ist an einem Pumpengehäuse 1 mit einer Strömungseintrittsöffnung 2 und einer Strömungsaustrittsöffnung 3 eine Riemenscheibe 5 mittels eines Pumpenlagers 4 drehbar gelagert.This design is used in conjunction with a vacuum control. In this case, a pulley 5 is rotatably supported by a pump bearing 4 on a pump housing 1 with a flow inlet opening 2 and a flow outlet opening 3.

Drehfest mit dieser Riemenscheibe 5 ist eine Pumpenwelle 6 verbunden auf der ein Axialschaufelrad 7 ebenfalls drehfest angeordnet ist.Rotationally fixed to this pulley 5, a pump shaft 6 is connected to an axial blade 7 is also arranged rotationally fixed.

Im Pumpengehäuse 1 ist erfindungsgemäß drehfest ein Leitrad 8 angeordnet, in welchem sich eine Lageraufnahme 9 für ein zweites Lager 10 der Pumpenwelle 6 befindet.In the pump housing 1, a stator 8 is rotatably arranged according to the invention, in which a bearing receptacle 9 for a second bearing 10 of the pump shaft 6 is located.

Kennzeichnend ist auch, dass dieses Lager 10 ein Gleitlager ist, in dem die Pumpenwelle 6 mit ihrem der Riemenscheibe 5 gegenüberliegenden Pumpenwellende gelagert ist.It is also characteristic that this bearing 10 is a sliding bearing in which the pump shaft 6 is mounted with its pulley 5 opposite pump shaft end.

Wesentlich ist weiterhin, dass diesem Lager 10 beabstandet, in Richtung der Strömungseintrittsöffnung 2 benachbart, drehfest auf der Pumpenwelle 6 das mit der Pumpenwelle 6 umlaufende Axialschaufelrad 7 angeordnet ist, wobei diesem Axialschaufelrad 7 in Richtung der Strömungseintrittsöffnung 2 benachbart beabstandet ein mit einer Pumpenwellendurchtrittsöffnung 11 versehenes, drehfest im Pumpengehäuse 1 angeordnetes Vorleitrad 12 mit einem Zuströmleitkegel 13 angeordnet ist, wobei zudem am Leitrad 8 in Richtung der Strömungsaustrittsöffnung 3, d.h. der Lageraufnahme 9 gegenüberliegend, ein Abströmleitkegel 14 angeordnet ist.It is also essential that this bearing 10 spaced, adjacent to the flow inlet opening 2, rotatably on the pump shaft 6 which is arranged with the pump shaft 6 Axialschaufelrad 7, wherein this Axialschaufelrad 7 adjacent in the direction of the flow inlet opening 2 spaced one provided with a pump shaft passage opening 11 , Vorführrad 12 arranged rotatably in the pump housing 1 is arranged with a Zuströmleitkegel 13, wherein also on the stator 8 in the direction of the flow outlet opening 3, that is, the bearing receptacle 9 opposite, a Abströmleitkegel 14 is arranged.

In Ihrer Gesamtheit bewirkt diese erfindungsgemäße Anordnung, dass im Pumpeninnenraum eine optimale, gleichmäßige, turbulenzfreie "Umströmung" des (am Leitrad 8 angeordneten) Zylindermantels des Abströmleitkegels 14 bei maximalem Durchsatz und minimalem Druckverlust gewährleistet ist, was eine wesentliche Voraussetzung für eine optimale Regelung des Volumenstromes der erfindungsgemäßen Kühlmittelpumpe darstellt.In its entirety, this arrangement according to the invention causes an optimal, uniform, turbulence-free "flow around" the (provided on the stator 8) cylinder jacket Abströmleitkegels 14 at maximum throughput and minimal pressure loss is ensured in the pump interior, which is an essential condition for optimal control of the flow represents the coolant pump according to the invention.

Erfindungsgemäß ist weiterhin, dass im Pumpengehäuse 1 ein Schieberarbeitsraum 16 angeordnet ist, in welchem der mit einem Ringsteg 15 versehene Abströmleitkegel 14 des Leitrades 8 hineinragt, wobei am Pumpengehäuse 1, der Lagerstelle des Pumpenlagers 4 in Strömungsrichtung gegenüberliegend, eine Kolbenstangenführung 17 mit einem Aktuatorbefestigungsflansch 18 angeordnet ist.According to the invention further, that in the pump housing 1, a valve working chamber 16 is arranged, in which the provided with a ring land 15 Abströmleitkegel 14 of the stator 8 protrudes, wherein on the pump housing 1, the bearing point of the pump bearing 4 in the flow direction opposite, a piston rod guide 17 with an actuator mounting flange 18th is arranged.

Erfindungsgemäß ist in dieser Kolbenstangenführung 17 eine in das Pumpengehäuse 1 hineinragende Kolbenstange 19 verschiebbar gelagert, wobei auf den außerhalb des Pumpengehäuses 1 befindlichen Endbereich der Kolbenstange 19 ein, eine lineare Verschiebung der Kolbenstange 19 bewirkender, mit einer Rückstelleinrichtung 20 versehener Aktuator 21 einwirkt, welcher an dem am Pumpengehäuse 1 angeordneten Aktuatorbefestigungsflansch 18 angeordnet ist.According to the invention, a piston rod 19 projecting into the pump housing 1 is displaceably mounted in this piston rod guide 17, wherein an actuator 21, which effects a linear displacement of the piston rod 19 and is provided with a return device 20, acts on the end region of the piston rod 19 located outside the pump housing 1 arranged on the pump housing 1 Aktuatorbefestigungsflansch 18 is arranged.

Aus fertigungs- und montagetechnischen Gründen ist es vorteilhaft, wenn das Pumpengehäuse 1 derart mehrteilig ausgebildet ist, dass ein mit dem Aktuatorbefestigungsflansch 18 versehner hinterer Bereich des Pumpengehäuses 1 an einen "noch" mit dem Schieberarbeitsraum 16 versehenen vorderen Bereich des Pumpengehäuses 1 angeflanscht wird.For manufacturing and assembly reasons, it is advantageous if the pump housing 1 is designed in such a multi-part, that a versor with the Aktuatorbefestigungsflansch 18 rear area of the pump housing 1 is flanged to a "still" provided with the valve working space 16 front portion of the pump housing 1.

Erfindungswesentlich ist weiterhin, dass an dem innerhalb des Pumpengehäuses 1 befindlichen Ende der Kolbenstange 19 ein im Schieberarbeitsraum 16 linear verschiebbar angeordneter, mit einer Ausströmleitkonur 23, einer Ausströmöffnung 24 sowie einer mit dem Ringsteg 15 am Abströmleitkegel 14, des Leitrades 8, abdichtend in Wirkverbindung tretenden Ringnut 25 versehener Axialschieber 22 befestigt ist. Erfindungsgemäß wird mittels dieser Anordnung eine aktive Steuerung der Kühlmittelfördermenge ermöglicht, welche einerseits durch "Null-Leckage", d.h. bei auf dem Ringsteg 15 des Leitrades 8 dichtend angelegter Ringnut 25 des Axialschiebers 22, eine optimale Erwärmung des Motors gewährleistet, und die andererseits nach der Erwärmung des Motors, durch eine definierte Verschiebung des Axialschiebers 22 im Schieberarbeitsraum 16 des Pumpengehäuses 1, die Motortemperatur im Dauerbetrieb exakt so zu beeinflussen vermag, dass im gesamten Arbeitsbereich des Motors sowohl die Schadstoffemission wie auch die Reibungsverluste und der Kraftstoffverbrauch deutlich reduziert werden können.It is also essential to the invention that at the end of the piston rod 19 located inside the pump housing 1, a sliding work chamber 16 is displaceably arranged linearly, with an outflow guide 23, an outflow opening 24, and sealingly engaged in operative connection with the annular web 15 on the outflow guide cone 14, the guide wheel 8 Ring groove 25 provided axial slide 22 is attached. According to the invention an active control of the coolant flow rate is enabled by means of this arrangement, which on the one hand by "zero leakage", ie ensured on the annular web 15 of the stator 8 sealingly applied annular groove 25 of the axial slide 22, optimum heating of the engine, and on the other hand Heating of the engine, by a defined displacement of the axial slide 22 in the valve working chamber 16 of the pump housing 1, the engine temperature in continuous operation is able to influence exactly so 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.

Mittels der vorliegenden erfindungsgemäßen Lösung kann infolge des direkten Antriebes des Axialschaufelrades 7 mittels der Riemenscheibe 5 ein hohes Drehmoment übertragen werden.By means of the present inventive solution can be transmitted by means of the pulley 5, a high torque due to the direct drive of the Axialschaufelrades 7.

Darüber hinaus gewährleistet das (gemäß Figur 1) im Aktuator 21 angeordnete Federelement in Form einer Druckfeder als Rückstelleinrichtung 20 bei Ausfall der Regelung ein Weiterfunktionieren der Kühlmittelpumpe (Fail-safe).In addition, this ensures (according to FIG. 1 ) arranged in the actuator 21 spring element in the form of a compression spring as restoring device 20 in case of failure of the regulation, a further functioning of the coolant pump (fail-safe).

Gleichzeitig ist diese erfindungsgemäße Lösung von der maximalen Temperaturbelastung für die elektrischen Bauteile bzw. die elektronischen Komponenten unabhängig, da im Pumpeninnern keine mit dem Fördervolumenstrom in Kontakt tretenden elektrischen Bauteile bzw. elektronischen Komponenten Einsatz finden.At the same time, this solution according to the invention is independent of the maximum temperature load for the electrical components or the electronic components, since no electrical components or electronic components that come into contact with the delivery volume flow are used inside the pump.

Die im Rahmen der vorliegenden Lösung erfindungsgemäß angeordneten, die Strömung definiert beeinflussenden Baugruppen (wie das Vorleitrad 12 mit dem Zuströmleitkegel 13, das Axialschaufelrad 7, das Leitrad 8 mit dem Abströmleitkegel 14 und der Axialschieber 22 mit der Ausströmleitkontur 23 und der Ausströmöffnung 24) bewirken in ihrer Gesamtheit, dass in der erfindungsgemäßen Kühlmittelpumpe Kavitationserscheinungen wie auch Verwirbelungen des Fördervolumenstromes vermieden werden, und dass die erfindungsgemäße Kühlmittelpumpe einen hohen Wirkungsgrad aufweist. Zudem bewirkt die vorgestellte, erfindungsgemäße Anordnung infolge ihrer robusten Bauform, dass selbst bei mit Schmutzfracht beladenem Kühlmittel eine hohe Betriebssicherheit und Zuverlässigkeit bei sehr langer Lebensdauer gewährleistet ist.The inventively arranged within the present solution, the flow defined influencing assemblies (such as the Vorleitrad 12 with the inflow cone 13, the Axialschaufelrad 7, the stator 8 with Abströmleitkegel 14 and the axial slide 22 with the Ausströmleitkontur 23 and the outflow opening 24) their entirety, that in the coolant pump according to the invention cavitation phenomena as well as turbulence of the delivery volume flow are avoided, and that the coolant pump according to the invention has a high efficiency. In addition, the proposed arrangement according to the invention, due to its robust construction, ensures that even with a load of coolant laden with coolant, a high level of operational safety and reliability is ensured over a very long service life.

Kennzeichnend ist auch, dass im vorderen Bereich des Pumpengehäuses 1 ein Vorleitradanlagesteg 34 und am Leitrad 8 ein Außenmantel 35 mit einem Distanzsteg 36 angeordnet ist.It is also characteristic that in the front region of the pump housing 1 a Vorleitradanlagesteg 34 and the stator 8, an outer jacket 35 is arranged with a spacer web 36.

Erfindungsgemäß gewährleistet dieser Distanzsteg 36, bei am Außenmantel 35 des Leitrades 8 anliegendem Vorleitrad 12 einen "freien Lauf" des Axialschaufelrades 7.In accordance with the invention, this spacer bar 36 ensures a "free run" of the axial blade wheel 7 when the guide wheel 12 bears against the outer jacket 35 of the stator 8.

Dadurch wird es fertigungstechnisch möglich, dass zunächst das (beispielsweise aus Kunststoff bestehende) Vorleitrad 12 bis zur Anlage an den Vorleitradanlagesteg 34 in den vorderen Bereich des Pumpengehäuses 1 eingeschoben wird, so dass nach Montage des Axialschaufelrades 7 das Vorleitrad 12 durch das Einpressen des Außenmantels 35 des Leitrades 8 in das Pumpengehäuses 1 (durch den am Außenmantel 35 des Leitrades 8 angeordneten Distanzsteg 36) in seiner Lage axial gesichert ist. Die radiale Sicherung wird von miteinander in Wirkverbindung tretenden Rastnasen übernommen die an den jeweils miteinander zu fügenden Bauteilen angeordnet sind.As a result, it becomes possible in terms of production that the preliminary guide wheel 12 (for example made of plastic) is pushed into the front region of the pump housing 1 until it engages with the guide wheel installation web 34, so that after assembly of the axial blade wheel 7 the guide wheel 12 is pushed in by the press-fitting of the outer jacket 35 of the stator 8 in the pump housing 1 (by the arranged on the outer casing 35 of the stator 8 distance web 36) is secured axially in position. The radial securing is taken over by latching lugs which come into operative connection with one another and which are arranged on the components to be joined together.

Erfindungsgemäß ist auch, dass am Pumpengehäuse 1 ein Zulaufflansch 26 und ein Ablaufflansch 27 angeordnet sind, welche gegenüber des im Pumpengehäuse 1 angeordneten Schieberarbeitsraumes 16 "abgewickelt" angeordnet sind.The invention also provides that a feed flange 26 and a drain flange 27 are arranged on the pump housing 1, which are arranged "unwound" in relation to the arranged in the pump housing 1 valve working chamber 16.

Durch all diese speziellen, erfindungsgemäßen Merkmale kann eine sehr kompakte, fertigungs- und montagetechnisch einfache, kostengünstige Bauform bei minimalem Bauvolumen gewährleistet werden.All these special features according to the invention make it possible to guarantee a very compact, cost-effective construction with a minimum construction volume in terms of production and assembly technology.

Wesentlich ist auch, dass am Pumpengehäuse 1 Befestigungsdome 28 angeordnet sind, welche eine Befestigung durch Verschrauben der erfindungsgemäßen regelbaren Kühlmittelpumpe am Kurbelgehäuse ermöglichen.It is also essential that 1 fixing domes 28 are arranged on the pump housing, which fastening by screwing the enable controllable coolant pump according to the invention on the crankcase.

Erfindungsgemäß ist auch, dass im Pumpengehäuse 1, nahe der Lagersitze, Dichtungen 31 und Leckageaustrittsöffnungen 32 angeordnet sind um eine hohe Funktionssicherheit zu gewährleisten.According to the invention is that in the pump housing 1, close to the bearing seats, seals 31 and leakage outlet openings 32 are arranged to ensure high reliability.

In der Figur 2 ist eine weitere Variante der erfindungsgemäßen, über eine Riemenscheibe angetriebenen regelbaren Kühlmittelpumpe in der Bauform einer Axialpumpe in der Seitenansicht im Schnitt dargestellt.In the FIG. 2 is a further variant of the invention, driven by a pulley controllable coolant pump in the design of an axial pump in the side view in section.

In dieser Bauform wird als Aktuator 21 zur definierten Betätigung des Axialschieber 22 ein Linearmotor 30 eingesetzt.In this design, a linear motor 30 is used as the actuator 21 for the defined actuation of the axial slide 22.

Diese bis auf den "neuen" Aktuator 21, d.h. den Linearmotor 30, analog zu Figur 1 aufgebaute, in ihren Wirkungen bereits in Verbindung mit der Figur 1 beschriebene, erfindungsgemäße regelbare Kühlmittelpumpe wird insbesondere dann eingesetzt, wenn bei dem jeweiligen Fahrzeugtyp (in dem die erfindungsgemäße Kühlmittelpumpe eingesetzt werden soll) kein Unterdruck vorhanden ist, oder wenn der vorhandene Unterdruck nicht ausreicht um den Axialschieber 22 funktionssicher zu verfahren.This up to the "new" actuator 21, ie the linear motor 30, analogous to FIG. 1 built in, in its effects already in connection with the FIG. 1 described, controllable coolant pump according to the invention is used in particular when in the respective vehicle type (in which the coolant pump according to the invention is to be used) no negative pressure is present, or if the existing negative pressure is insufficient to move the axial slide 22 functionally reliable.

Da der in der Lösung nach Figur 2 zur Betätigung des Axialschiebers 22 eingesetzte Linearmotor 30 sehr klein baut, kann diese in Figur 2 vorgestellte Lösung auch dann eingesetzt werden, wenn beispielsweise der im Motorraum des jeweiligen Fahrzeuges vorhandene "Freiraum" nicht ausreicht um die in der Figur 1 vorgestellte Lösung einzusetzen.Since in the solution after FIG. 2 used to operate the axial slide 22 linear motor 30 is very small, this can in FIG. 2 presented solution can be used even if, for example, the existing in the engine compartment of each vehicle "free space" is not sufficient in the FIG. 1 to use the presented solution.

Bei dieser Bauform der erfindungsgemäßen Kühlmittelpumpe (mit einem Linearmotor 30) wird ein Weiterfunktionieren der Kühlmittelpumpe bei Ausfall der Regelung (Fail-safe) dadurch gewährleistet, dass die Spindelsteigung als Rückstelleinrichtung im Linearmotor 30 fungiert.In this design of the coolant pump according to the invention (with a linear motor 30) further functioning of the coolant pump in case of failure of the control (fail-safe) is ensured by the fact that the spindle pitch acts as a restoring device in the linear motor 30.

Infolge dieser (bei der Lösung nach Figur 2) eingesetzten Spindelsteigung kann der Axialschieber 22 (allein) auf Grund seiner Druckbeaufschlagung eine "Rückstellung" (der Spindelstange) bewirken, so dass bei Ausfall der Regelung stets der Axialschieber 22 in seine hintere Endlage ("geöffnet") zurückfährt.As a result of this (at solution FIG. 2 ) used spindle pitch, the axial slide 22 (alone) due to its pressurization cause a "reset" (the spindle rod), so that in case of failure of the control always the axial slide 22 moves back to its rear end position ("open").

BezugszeichenzusammenstellungREFERENCE SYMBOL

11
Pumpengehäusepump housing
22
StrömungseintrittsöffnungFlow inlet opening
33
StrömungsaustrittsöffnungFlow outlet opening
44
Pumpenlagerpump bearings
55
Riemenscheibepulley
66
Pumpenwellepump shaft
77
Axialschaufelradaxial fan
88th
Leitradstator
99
Lageraufnahmebearing seat
1010
Lagercamp
1111
PumpenwellendurchtrittsöffnungPump shaft passage opening
1212
Vorleitradinlet guide vane
1313
ZuströmleitkegelZuströmleitkegel
1414
AbströmleitkegelAbströmleitkegel
1515
Ringstegring land
1616
SchieberarbeitsraumSlide workspace
1717
KolbenstangenführungPiston rod guide
1818
AktuatorbefestigungsflanschAktuatorbefestigungsflansch
1919
Kolbenstangepiston rod
2020
RückstellelementReturn element
2121
Aktuatoractuator
2222
Axialschieberaxial slide
2323
AusströmleitkonturAusströmleitkontur
2424
Ausströmöffnungoutflow
2525
Ringnutring groove
2626
Zulaufflanschinlet flange
2727
Ablaufflanschdrain flange
2828
Befestigungsdomfixing dome
2929
Arbeitskolbenworking piston
3030
Linearmotorlinear motor
3131
Dichtungpoetry
3232
LeckageaustrittsöffnungLeakage outlet opening
3333
Pneumatikaktuatorpneumatic actuator
3434
VorleitradanlagestegVorleitradanlagesteg
3535
Außenmantelouter sheath
3636
Distanzstegdistance web

Claims (9)

  1. Controllable coolant pump, constructed as a controllable axial pump, with a pump housing (1) with a flow intake opening (2) and a flow discharge opening (3) with a pump shaft (6) placed on/in the pump housing (1) and arranged in a rotational manner by using a pump bearing (4) and connected in a fixed manner relative to the rotation of the belt driven pulley (5) and with an axial paddle wheel (7) arranged on this pump shaft (6), characterized by the fact
    - that a guide wheel (8) is arranged a torque-proof manner in the pump housing (1) where a bearing seat (9) is located, where a bearing (10) is arranged in which where the pump shaft (6) is seated with the pump shaft end in a bearing opposite to the belt driven pulley (5) at a predetermined distance from this bearing (10) adjacent to the direction of the flow intake opening (2), the axial paddle wheel (7) is arranged in a torque-proof manner on the pump shaft (6) provided with a preliminary guide wheel (12) arranged in a torque-proof manner in the pump housing (1) adjacent to a pump shaft passage opening (11) with a preliminary guide wheel (12) arranged in a torque-proof manner in the pump housing (1) with a directional intake cone (13) arranged at the guide wheel (8) in the direction of the flow discharge opening (3), with directional discharge cone (14) and an annular rib (15) opposite to the bearing seat (9), and
    - that a sliding valve working compartment (16) is arranged in the pump housing (1) penetrated by the directional discharge cone (14) of the guide wheel (8) where a piston rod guide (17) is located with an actuator mounting flange (18) and is arranged in the direction of the flow opposite to the bearing position of the pump bearing (4) in the pump housing (1), a moveable piston rod (19) projecting into the pump housing (1) is mounted in this piston rod guide (17) acting on the end of the piston rod (19) outside of the pump housing (1), a linear movement of the piston rod (19) arranged at the actuator mounting flange (18) of the pump housing (1), which acts with a reset mechanism (20) even when regulation of the provided actuator (21) fails, a linearly moveable axial valve (22) provided in the sliding valve working compartment (16) and at the end of the piston rod (19) is fastened and located inside the pump housing (1) with an outlet guiding edge (23), an outlet opening (24) and also a radial groove (25) to provide an operative sealing connection with the annular rib (15), this actively controls the coolant supply so that there is "zero leakage", and
    - that an intake flange (26) and a drainage flange (27) are arranged at the pump housing (1) which are arranged "at an angle" to the sliding valve working compartment (16) arranged in the pump housing (1).
  2. Controllable coolant pump according to claim 1, characterized by the fact that the pump housing (1) is formed in multiple parts, whereby a rear area of the pump housing (1) with the actuator mounting flange (18) is flanged to the front area of the pump housing (1) with the sliding valve working compartment (16).
  3. Controllable coolant pump according to claim 1, characterized by the fact that one or several mounting pin(s) (28) is / are arranged on the pump housing (1).
  4. Controllable coolant pump according to claim 1, characterized by the fact that a hydraulic actuator or pneumatic actuator is used as an actuator (21) with a working piston (29) and is arranged on the piston rod (19) at the end.
  5. Controllable coolant pump according to claim 1, characterized by the fact that a linear motor (30) is used as an actuator (21).
  6. Controllable coolant pump according to claims 1 and 4, characterized by the fact that the reset mechanism (20) is a spring-loaded element.
  7. Controllable coolant pump according to claim 5 characterized by the fact that the spindle pitch in the linear motor (30) functions as a reset mechanism.
  8. Controllable coolant pump according to claim 1, characterized by the fact that seals (31) and leakage discharge openings (32) are arranged close to the bearing seating's in the pump housing (1).
  9. Controllable coolant pump according to claim 2, characterized by the fact that the leading guide wheel bar (34) is arranged in the front area of the pump housing (1) and that an exterior jacket (35) with a spacer strip (36) allows "free movement" of the axial paddle wheel (7) for the preliminary guide wheel (12) at the exterior jacket (35) of the guide wheel (8).
EP10712884.5A 2009-03-12 2010-03-06 Controllable coolant pump Not-in-force EP2406498B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910012923 DE102009012923B3 (en) 2009-03-12 2009-03-12 Adjustable coolant pump
PCT/DE2010/000245 WO2010102604A1 (en) 2009-03-12 2010-03-06 Controllable coolant pump

Publications (2)

Publication Number Publication Date
EP2406498A1 EP2406498A1 (en) 2012-01-18
EP2406498B1 true EP2406498B1 (en) 2015-12-23

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ID=42221165

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Application Number Title Priority Date Filing Date
EP10712884.5A Not-in-force EP2406498B1 (en) 2009-03-12 2010-03-06 Controllable coolant pump

Country Status (3)

Country Link
EP (1) EP2406498B1 (en)
DE (1) DE102009012923B3 (en)
WO (1) WO2010102604A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010053510B4 (en) 2010-12-04 2014-01-23 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Coolant pump
DE102011008305B4 (en) 2011-01-11 2014-08-14 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Device for actuating a control valve
DE102014004509B4 (en) 2014-03-28 2016-08-04 Nidec Gpm Gmbh control device
DE102014019609B4 (en) 2014-12-30 2019-08-22 Nidec Gpm Gmbh Coolant pump
CN109899324A (en) * 2019-04-26 2019-06-18 如东黄海泵业有限公司 A kind of high temperature resistant submerged pump

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3739494A1 (en) * 1987-11-21 1989-06-01 Sueddeutsche Kuehler Behr VALVE FOR CONTROLLING THE COOLING WATER CIRCUIT IN COMBUSTION ENGINES
US6887046B2 (en) * 1996-02-26 2005-05-03 Flowork Systems Ii Llc Coolant pump, mainly for automotive use
DE10047387B4 (en) * 2000-09-25 2013-09-12 GPM Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt, Merbelsrod Electrically driven coolant pump
DE10207653C1 (en) * 2002-02-22 2003-09-25 Gpm Geraete Und Pumpenbau Gmbh Electric coolant pump with integrated valve, and method for controlling it
DE10314526B4 (en) * 2003-03-31 2007-11-29 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Coolant pump, in particular flow-cooled electric coolant pump with integrated directional control valve
DE102005056199A1 (en) * 2005-11-25 2006-10-12 Audi Ag Pump for liquid medium, especially for controlling coolant temperature of internal combustion engine, has coolant cooler in coolant circuit, mechanically adjustable control element for adjusting transport performance
DE102006034952B4 (en) * 2006-07-28 2008-04-03 Audi Ag Adjustable axial pump for a cooling circuit of an internal combustion engine
DE102007022189A1 (en) * 2007-05-11 2008-11-27 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Pulley driven, controllable coolant pump for internal combustion engine of motor vehicle, has transmitter with end including actuating and working pistons at hydraulic pipe, where working piston operates in operating medium provided in pipe

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Publication number Publication date
EP2406498A1 (en) 2012-01-18
DE102009012923B3 (en) 2010-07-01
WO2010102604A1 (en) 2010-09-16

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