EP1943423B1 - Pumpenanordnung - Google Patents

Pumpenanordnung Download PDF

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Publication number
EP1943423B1
EP1943423B1 EP06805431A EP06805431A EP1943423B1 EP 1943423 B1 EP1943423 B1 EP 1943423B1 EP 06805431 A EP06805431 A EP 06805431A EP 06805431 A EP06805431 A EP 06805431A EP 1943423 B1 EP1943423 B1 EP 1943423B1
Authority
EP
European Patent Office
Prior art keywords
pump
shaft
actuator
temperature
slotted 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
EP06805431A
Other languages
English (en)
French (fr)
Other versions
EP1943423A1 (de
Inventor
Heiko Schulz-Andres
Dirk Kamarys
Olaf Rische
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.)
Magna Powertrain Hueckeswagen GmbH
Original Assignee
Ixetic Hueckeswagen 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 Ixetic Hueckeswagen GmbH filed Critical Ixetic Hueckeswagen GmbH
Publication of EP1943423A1 publication Critical patent/EP1943423A1/de
Application granted granted Critical
Publication of EP1943423B1 publication Critical patent/EP1943423B1/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/02—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238—Rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0253—Pressure lubrication using lubricating pumps characterised by the pump driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/19—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/56—Number of pump/machine units in operation

Definitions

  • the invention relates to a pump arrangement, in particular for lubricating oil pumps for internal combustion engines, with at least two pump devices, wherein the pump devices can independently promote each other as defined in the preamble of claim 1.
  • a pump arrangement in particular for lubricating oil pumps for internal combustion engines, with at least two pump devices, wherein the pump devices can independently promote each other as defined in the preamble of claim 1.
  • Such an arrangement is for example from the DE-A-102004040436 known.
  • other two-stage pressure-controlled pumps with two internal gear pumps operate in parallel, the second stage from a certain oil pressure (of about 3 bar) back into the intake of the pump. In these concepts occur volumetric losses incurred by the Umzuaten the unused volume flow.
  • the inventive idea is to present an at least two-stage pump in which one stage delivers continuously and the other depending on the temperature is switched on or off to save power.
  • Two fixed displacement pumps eg gerotor or external gear pumps
  • the two pumps are separated.
  • the idea is to connect one pump firmly to the drive shaft and the other with the help of a temperature-dependent shaft-hub connection to switch. Once the required switching temperature has been reached, the second pump stage becomes active and both volumetric flows are available to the consumer.
  • An inventive pump arrangement is characterized in that the at least second pump is connected by a temperature-dependent variable actuator, in particular by a volume expansion of an actuator body at a temperature rise.
  • FIG. 1 is the so-called second pump, which is temperature-dependent connected to the shaft, as a gear pump with a gear 1 shown.
  • the gear 1 is mounted on a shaft 28.
  • a radial bore 26 of a shaft 28 is temperature-dependent variable actuator 30, namely a radially extendable expansion element 30 is arranged.
  • the shaft 28 is further surrounded by a slotted sleeve 32 in the region of the expansion element 30.
  • the slotted sleeve 32 Upon expansion of the expansion element 30 by increasing the temperature, the slotted sleeve 32 is pressed against the hub of the gear 34 and thus produces a frictional connection between the expansion element 30 and thus the shaft 28 and the gear 34.
  • an actuator 30, namely an annular expansion element 36 in an annular recess 38 of the shaft 40 is arranged.
  • the expansion element 36 is in turn surrounded by a slotted clamping sleeve 42.
  • the expansion element 36 arranged on the shaft 40 expands substantially radially when the temperature increases. During this expansion, it spreads the slotted sleeve 42. Again, the torque is transmitted to the gear 44 in turn by the resulting frictional force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Eye Examination Apparatus (AREA)

Description

  • Die Erfindung betrifft eine Pumpenanordnung, insbesondere für Schmierölpumpen für Verbrennungsmotoren, mit mindestens zwei Pumpenvorrichtungen, wobei die Pumpenvorrichtungen voneinander unabhängig fördern können wie im Oberbegriff von Anspruch 1 definiert ist. Eine Solche Anordnung ist z.B. aus der DE-A-102004040436 bekannt. Es sind im Stand der Technik auch weitere zweistufige druckgeregelte Pumpen bekannt, wobei zwei Innenzahnradpumpen parallel arbeiten, wobei die zweite Stufe ab einem bestimmten Öldruck (von ca. 3 bar) in den Ansaugbereich der Pumpe zurückfördert. Bei diesen Konzepten treten volumetrische Verluste auf, die durch das Umfördern des nicht benötigten Volumenstroms anfallen. Hinzu kommen mechanische Verluste in Folge der relativ großen Reibradien der verwendeten Innenzahnradpumpen.
  • Es ist Aufgabe der Erfindung, eine Pumpenanordnung darzustellen, die diese Nachteile nicht aufweist.
  • Die Aufgabe wird gelöst durch eine Pumpenanordnung gemäß Anspruch 1.
  • Die erfinderische Idee ist dabei, eine mindestens zweitstufige Pumpe darzustellen, bei der eine Stufe kontinuierlich fördert und die andere je nach Temperatur zu- oder abgeschaltet wird, um Leistung einzusparen. Es werden zwei Konstantpumpen (z. B. Gerotor- oder Außenzahnradpumpen) verwendet. Die beiden Teilpumpen sind voneinander getrennt.
  • Bevorzugt wird eine Pumpenanordnung, bei welcher die temperaturabhängig betätigbare Drehantriebsverbindung zwischen der Welle und einer Rotornabe der zweiten Pumpe angeordnet ist. Die Idee ist also, die eine Pumpe fest mit der Antriebswelle zu verbinden und die andere mit Hilfe einer temperaturabhängigen Wellen-Naben-Verbindung dazu zu schalten. Ist die notwendige Schalttemperatur erreicht, wird die zweite Pumpenstufe aktiv, und beide Volumenströme stehen dem Verbraucher zur Verfügung.
  • Eine erfinderische Pumpenanordnung zeichnet sich dadurch aus, dass die mindestens zweite Pumpe durch einen temperaturabhängig veränderbaren Aktor, insbesondere durch eine Volumenausdehnung eines Aktorkörpers bei einem Temperaturanstieg, hinzugeschaltet wird.
  • Beim Überschreiten einer bestimmten Temperatur wird die Verbindung hergestellt und beim Unterschreiten wieder gelöst. Die Erfindung wird nun anhand der Figuren beschrieben.
    • Figur 1 zeigt eine zweite Pumpe mit einem radial wirkenden Dehnelement.
    • Figur 2 zeigt eine zweite Pumpe mit einem ringförmigen Dehnelement.
  • In Figur 1 ist die sogenannte zweite Pumpe, welche temperaturabhängig mit der Welle verbindbar ist, als Zahnradpumpe mit einem Zahnrad 1 dargestellt. Das Zahnrad 1 ist auf einer Welle 28 gelagert.
  • In einer radialen Bohrung 26 einer Welle 28 ist temperaturabhängig veränderbarer Aktor 30, nämlich ein radial ausfahrbares Dehnelement 30 angeordnet. Die Welle 28 wird weiterhin im Bereich des Dehnelements 30 von einer geschlitzten Hülse 32 umgeben. Bei Ausdehnung des Dehnelements 30 durch Temperaturerhöhung wird die geschlitzte Hülse 32 gegen die Nabe des Zahnrades 34 gepresst und somit eine kraftschlüssige Verbindung zwischen dem Dehnelement 30 und damit der Welle 28 und dem Zahnrad 34 hergestellt.
  • In Figur 2 wird ein Aktor 30, nämlich ein ringförmiges Dehnelement 36 in einer ringförmigen Ausnehmung 38 der Welle 40 angeordnet. Das Dehnelement 36 ist wiederum von einer geschlitzten Spannhülse 42 umgeben. Das auf der Welle 40 angeordnete Dehnelement 36 dehnt sich bei Temperaturerhöhung im Wesentlichen radial aus. Während dieser Ausdehnung spreizt es die geschlitzte Hülse 42 auf. Auch hier wird das Drehmoment auf das Zahnrad 44 wiederum durch die so entstehende Reibkraft übertragen.
    • Bezugszeichenliste
    • 26
    radiale Bohrung
    28
    Welle
    30
    radial ausfahrbares Dehnelement
    32
    geschlitzte Hülse
    34
    Zahnrad
    36
    ringförmiges Dehnelement
    38
    ringförmige Ausnehmung
    40
    Welle
    42
    geschlitzte Spannhülse
    44
    Zahnrad

Claims (2)

  1. Pumpenanordnung, insbesondere für Schmierölpumpen für Verbrennungsmotoren, mit mindestens zwei Pumpenvorrichtungen, welche auf einer gemeinsamen Antriebswelle ( 28, 40 ) angeordnet sind, aber voneinander unabhängig fördern können, und wobei die erste Pumpe immer drehangetrieben mit der Antriebswelle (28, 40 ) verbunden ist, wobei die mindestens zweite Pumpe über eine temperaturabhängig betätigbare Drehantriebsverbindung mit der Welle (28, 40 der ersten Pumpe (98) verbindbar ist, dadurch gekennzeichnet, dass die mindestens zweite Pumpe durch einen temperaturabhängig veränderbaren Aktor (12, 22, 30, 36, 46, 62, 82), durch eine Volumenausdehnung eines Aktorkörpers bei einem Temperaturanstieg, hinzugeschaltet wird, dass der Aktor (12, 22, 30, 36, 46) eine kraftschlüssige Wellen-Naben-Verbindung herstellt, dass die Welle (28) eine radiale Ausnehmung zur Aufnahme eines radial ausdehnbaren Aktors (30) aufweist, welcher von einer geschlitzten Hülse (32) umgeben ist, so dass bei radialer Ausdehnung des Aktors (30) die geschlitzte Hülse (32) sich in ihrem Umfang ausdehnt und eine Pressverbindung zwischen dem Aktor (30) und der Rotornabe herstellt, oder dass auf der Welle (40) ein zylindrischer Ringkörper (36) als Dehnelement innerhalb einer geschlitzten Hülse (42) angeordnet ist, so dass bei radialer Ausdehnung des Ringkörpers (36) die geschlitzte Hülse (42) sich in ihrem Umfang ausdehnt und eine Pressverbindung zwischen Aktor (36) und Rotornabe herstellt.
  2. Pumpenanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die temperaturabhängig betätigbare Drehantriebsverbindung zwischen der Welle (28, 40) und einer Rotornabe der zweiten Pumpe angeordnet ist.
EP06805431A 2005-10-27 2006-10-17 Pumpenanordnung Not-in-force EP1943423B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005051463 2005-10-27
PCT/DE2006/001823 WO2007048380A1 (de) 2005-10-27 2006-10-17 Pumpenanordnung

Publications (2)

Publication Number Publication Date
EP1943423A1 EP1943423A1 (de) 2008-07-16
EP1943423B1 true EP1943423B1 (de) 2012-05-02

Family

ID=37654812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06805431A Not-in-force EP1943423B1 (de) 2005-10-27 2006-10-17 Pumpenanordnung

Country Status (4)

Country Link
EP (1) EP1943423B1 (de)
AT (1) ATE556223T1 (de)
DE (1) DE112006002561A5 (de)
WO (1) WO2007048380A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505644B1 (de) 2007-09-06 2011-09-15 Tcg Unitech Systemtechnik Gmbh Kühlmittelpumpe
AT513976B1 (de) * 2013-06-19 2014-09-15 Avl List Gmbh Schaltbare Zahnradpumpe
DE102014117166B4 (de) * 2014-11-24 2016-07-07 Netzsch Pumpen & Systeme Gmbh Drehkolbenpumpe, verfahren zur fixierung von drehkolben einer drehkolbenpumpe und verfahren zur demontage von drehkolben einer drehkolbenpumpe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1099700A (en) * 1963-12-30 1968-01-17 Mirrlees Engineers Ltd Closed-circuit force-feed lubrication system for marine diesel engines and other devices requiring lubrication
US5326232A (en) * 1993-04-20 1994-07-05 General Motors Corporation Two stage pump assembly with mechanical disconnect
JPH07332086A (ja) * 1994-06-14 1995-12-19 Unisia Jecs Corp 渦巻ポンプ
DE19752372A1 (de) * 1997-11-26 1999-05-27 Guenther Dipl Ing Beez Regelbare Kreiselpumpe, insbesondere für Verbrennungsmotore
DE19914440A1 (de) * 1999-03-30 2000-10-05 Volkswagen Ag Vorrichtung zur temperaturabhängigen Verbindung von Bauteilen
DE19933484A1 (de) * 1999-07-16 2001-01-18 Bayerische Motoren Werke Ag Innenzahnradpumpen umfassendes Pumpenaggregat, insbesondere für das Schmiersystem einer Brennkraftmaschine
DE10223466B4 (de) * 2001-05-31 2015-07-02 Magna Powertrain Hückeswagen GmbH Pumpe
DE102004040436A1 (de) * 2004-08-20 2005-10-20 Audi Ag Ölpumpe mit wenigstens zwei Pumpenstufen und Verfahren zum Betreiben einer Ölpumpe
DE102005032226A1 (de) * 2005-07-09 2007-01-18 Daimlerchrysler Ag Schmiermittelversorgungssystem eines Kraftfahrzeugs

Also Published As

Publication number Publication date
ATE556223T1 (de) 2012-05-15
DE112006002561A5 (de) 2008-07-03
EP1943423A1 (de) 2008-07-16
WO2007048380A1 (de) 2007-05-03

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