EP1943423B1 - Pump arrangement - Google Patents

Pump arrangement 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
German (de)
French (fr)
Other versions
EP1943423A1 (en
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/en
Application granted granted Critical
Publication of EP1943423B1 publication Critical patent/EP1943423B1/en
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.

Abstract

The invention relates to a pump arrangement, in particular for lubricating oil pumps for internal combustion engines, having at least two pump devices which are arranged on a common driveshaft but can feed independently of one another, wherein the first pump is always connected to the driveshaft so as to be driven in rotation, and wherein the second pump (1) can be connected to the shaft (2) or to the rotor of the first pump by means of a rotary drive connection (12) which can be actuated as a function of temperature.

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.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. Such an arrangement is for example from the DE-A-102004040436 known. There are also known in the art, 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 Umzufördern the unused volume flow. In addition, there are mechanical losses as a result of the relatively large friction radii of the internal gear pumps used.

Es ist Aufgabe der Erfindung, eine Pumpenanordnung darzustellen, die diese Nachteile nicht aufweist.It is an object of the invention to present a pump assembly which does not have these disadvantages.

Die Aufgabe wird gelöst durch eine Pumpenanordnung gemäß Anspruch 1.The object is achieved by a pump arrangement according to claim 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.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) are used. The two pumps are separated.

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.Preference is given to a pump arrangement in which the temperature-dependent actuated rotary drive connection between the shaft and a rotor hub of the second pump is arranged. 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.

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.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.

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.
When a certain temperature is exceeded, the connection is established and released when falling below. The invention will now be described with reference to the figures.
  • FIG. 1 shows a second pump with a radially acting expansion element.
  • FIG. 2 shows a second pump with an annular expansion element.

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 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.

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 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. 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.

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.In FIG. 2 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.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

2626
radiale Bohrungradial bore
2828
Wellewave
3030
radial ausfahrbares Dehnelementradially extendable expansion element
3232
geschlitzte Hülseslotted sleeve
3434
Zahnradgear
3636
ringförmiges Dehnelementannular expansion element
3838
ringförmige Ausnehmungannular recess
4040
Wellewave
4242
geschlitzte Spannhülseslotted clamping sleeve
4444
Zahnradgear

Claims (2)

  1. Pump arrangement particularly for lubricating oil pumps for internal combustion engines with at least two pump apparatus which are disposed on a common drive shaft (28, 40) but which can convey fluid independently of one another and in which the first pump is always connected and driven in rotation with the drive shaft (28, 40), whereby at least the second pump is connectable with the shaft (28, 40) of the first pump (98) via a temperature-dependent rotary drive element, characterized in that at least the second pump can be actuated additionally by means of a temperature-dependent, variable actuator (12, 22, 30, 36, 46, 62, 82) through volumetric expansion of an actuator body upon temperature increase, whereby the actuator (12, 22, 30, 36, 46) establishes a force-locked shaft-hub connection, whereby the shaft (28) features a radial recess for receiving a radially expandable actuator (30) that is surrounded by a slotted sleeve (32), so that, upon radial expansion of the actuator (30), the slotted sleeve (32) expands in its circumference and establishes a press connection between the actuator (30) and the rotor hub, or whereby a cylindrical annular body (36) is disposed as an expansion element within a slotted sleeve (42) on the shaft (40) so that, upon radial expansion of the annular body (36), the slotted sleeve (42) expands in its circumference and establishes a press connection between the actuator (36) and rotor hub.
  2. Pump arrangement according to Claim 1, characterized in that the temperature-dependent, actuatable rotary drive connection is disposed between the shaft (28, 40) and a rotor hub of the second pump.
EP06805431A 2005-10-27 2006-10-17 Pump arrangement Not-in-force EP1943423B1 (en)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=37654812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06805431A Not-in-force EP1943423B1 (en) 2005-10-27 2006-10-17 Pump arrangement

Country Status (4)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505644B1 (en) 2007-09-06 2011-09-15 Tcg Unitech Systemtechnik Gmbh WATER PUMP
AT513976B1 (en) * 2013-06-19 2014-09-15 Avl List Gmbh Switchable gear pump
DE102014117166B4 (en) * 2014-11-24 2016-07-07 Netzsch Pumpen & Systeme Gmbh ROTARY PISTON PUMP, METHOD FOR FIXING ROTARY PISTONS OF A ROTARY PISTON PUMP, AND METHOD FOR DISMANTLING ROTARY PISTONS OF A ROTARY PISTON PUMP

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 (en) * 1994-06-14 1995-12-19 Unisia Jecs Corp Centrifugal pump
DE19752372A1 (en) * 1997-11-26 1999-05-27 Guenther Dipl Ing Beez Controlled rotary pump, especially for internal combustion engines
DE19914440A1 (en) * 1999-03-30 2000-10-05 Volkswagen Ag Thermo-controlled automotive engine water cooling pump control dispenses with electrical systems
DE19933484A1 (en) * 1999-07-16 2001-01-18 Bayerische Motoren Werke Ag Pump unit for lubrication system of internal combustion engine, in which on of internal rotors has device for controlled interruption of drive connection
WO2002097273A2 (en) * 2001-05-31 2002-12-05 Luk Automobilitechnik Gmbh & Co. Kg Pump having a temperature-dependent delivery volume
DE102004040436A1 (en) * 2004-08-20 2005-10-20 Audi Ag Oil pump with two pump stages for motor vehicle has second or additional pump stages connectable to first pump stage if oil demand arises which exceeds oil demand for normal operation
DE102005032226A1 (en) * 2005-07-09 2007-01-18 Daimlerchrysler Ag Lubricant supply system for motor vehicle`s internal-combustion engine, has coupling device that is coupled and decoupled based on engine`s operating conditions to temporarily connect one supply pump to supply lubricant to engine

Also Published As

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

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