EP0811765B1 - Internal combustion engine with two-stage internal gear pump - Google Patents

Internal combustion engine with two-stage internal gear pump Download PDF

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Publication number
EP0811765B1
EP0811765B1 EP97106781A EP97106781A EP0811765B1 EP 0811765 B1 EP0811765 B1 EP 0811765B1 EP 97106781 A EP97106781 A EP 97106781A EP 97106781 A EP97106781 A EP 97106781A EP 0811765 B1 EP0811765 B1 EP 0811765B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pump
hydraulic circuit
valve
combustion engine
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.)
Expired - Lifetime
Application number
EP97106781A
Other languages
German (de)
French (fr)
Other versions
EP0811765A2 (en
EP0811765A3 (en
Inventor
Rudolf Dr. Flier
Derek John Pelly
Anton Finkenzeller
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0811765A2 publication Critical patent/EP0811765A2/en
Publication of EP0811765A3 publication Critical patent/EP0811765A3/en
Application granted granted Critical
Publication of EP0811765B1 publication Critical patent/EP0811765B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/103—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement

Definitions

  • the invention relates to one described in the preamble of claim 1 Internal combustion engine with separate hydraulic circuits.
  • Such an internal combustion engine with two separate hydraulic circuits is, for example known from EP-B 0 416 463, which in addition to the lubrication system the machine forming hydraulic circuit one of the control / regulation of a Includes hydraulic circuit serving camshaft angle of rotation adjustment device.
  • Each of the hydraulic circuits is driven separately by the internal combustion engine Pump equipped, namely with a crankshaft driven Oil pump and one of the camshaft of the internal combustion engine driven high pressure pump.
  • the disadvantage here is the installation space required for the separately arranged Pumps as well as the effort involved in mechanical drive connections for example by looking at one according to DE-A 38 40 356 as Lubrication pump for a single-stage internal rotor gear pump serving an internal combustion engine and one according to EP-A 0 712 997 for hydraulic actuation a valve train adjusting device provided, single-stage internal rotor gear pump can illustrate.
  • the invention has for its object for a generic internal combustion engine with separate hydraulic circuits supplied by lubricating oil, in particular different pressures in terms of installation space and drive effort to show favorable pump arrangement.
  • valve-controlled internal combustion engine proposed that the other hydraulic circuit of the control / regulation of a valve train adjusting device, in particular a camshaft angle of rotation adjustment device serves, the separated in the two-stage internal rotor gear pump Hydraulic circuits advantageously used for different pressures are, the control pressure versus the delivery pressure for the lubrication system is chosen larger.
  • the advantageous embodiment also enables that the lubrication system hydraulic circuit when falling below a predetermined Minimum pressure via a controllable 4- / 2-way valve with the hydraulic circuit the valve train adjustment device can be connected, this directional valve to avoid complex pressure lines also in the pump housing is integrated.
  • A, designated two-stage internal rotor gear pump comprises one externally toothed inner rotor 2, with an internally and externally toothed intermediate rotor 3 cooperates, which in turn in a in a pump housing 4th rotatably mounted external rotor 5 engages with internal teeth.
  • separate Pressure connections 6, 7 are with a respective pressure chamber 8, 9 in oil-carrying Connection.
  • a common inlet 12 is provided for suction chambers 10, 11, via the lubricating oil from an oil pan 13 only schematically in FIG indicated, indicated by 14 internal combustion engine.
  • the pressure chamber 8 or the pressure connection is located 6 of the pump stage 15 in a first hydraulic circuit 16 with the associated one Suction chamber 10 or the inlet 12 via a pressure relief valve 17 in oil-bearing connection.
  • the pressure chamber 9 is located in the second hydraulic circuit 18 or the pressure connection 7 of the second pump stage 19 with the suction chamber 11 or the inlet 12 via a pressure relief valve 20 in connection.
  • For saving separate lines include the pressure relief valves 17, 20 of the connection channels in the pump housing 4 arranged integrated.
  • the first hydraulic circuit 16 forms with the Pump stage 15 the lubrication system of the internal combustion engine 14.
  • the separate one second hydraulic circuit 18 with the pump stage 19 is used to supply another Consumer 21, preferably the control of a valve train adjusting device, in particular a camshaft angle of rotation adjustment device.
  • the inventive use of the two-stage internal rotor gear pump 1 for separate hydraulic circuits 16, 18 with different pressures P 1 and P 2 opens up the possibility of giving priority to the lubrication system hydraulic circuit 16 during operation of the internal combustion engine 14 in that this lubrication system hydraulic circuit 16 if the pressure falls below a predetermined minimum pressure - for example approx. 2 bar - can be connected to the hydraulic circuit 18 of the valve train adjusting device 21 via a controllable 4- / 2-way valve 22.
  • this directional valve 22 is also integrated in the pump housing 4

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Rotary Pumps (AREA)

Description

Die Erfindung bezieht sich auf eine im Oberbegriff des Patentanspruches 1 beschriebene Brennkraftmaschine mit gesonderten Hydraulikkreisen.The invention relates to one described in the preamble of claim 1 Internal combustion engine with separate hydraulic circuits.

Eine derartige Brennkraftmaschine mit zwei gesonderten Hydraulikkreisen ist beispielsweise aus der EP-B 0 416 463 bekannt, die neben einem das Schmiersystem der Maschine bildenden Hydraulikkreis einen der Steuerung/Regelung einer Nockenwellen-Drehwinkel-Verstellvorrichtung dienenden Hydraulikkreis umfaßt. Jeder der Hydraulikkreise ist mit einer von der Brennkraftmaschine gesondert angetriebenen Pumpe ausgerüstet, nämlich mit einer von der Kurbelwelle angetriebenen Schmierölpumpe und einer von der Nockenwelle der Brennkraftmaschine angetriebenen Hochdruckpumpe.Such an internal combustion engine with two separate hydraulic circuits is, for example known from EP-B 0 416 463, which in addition to the lubrication system the machine forming hydraulic circuit one of the control / regulation of a Includes hydraulic circuit serving camshaft angle of rotation adjustment device. Each of the hydraulic circuits is driven separately by the internal combustion engine Pump equipped, namely with a crankshaft driven Oil pump and one of the camshaft of the internal combustion engine driven high pressure pump.

Nachteilig hierbei ist der erforderliche Einbauraum für die gesondert angeordneten Pumpen sowie der Aufwand an mechanischen Antriebsverbindungen, wie dies sich beispielsweise durch eine Zusammenschau einer gemäß der DE-A 38 40 356 als Schmierpumpe für eine Brennkraftmaschine dienenden, einstufigen Innenläufer-Zahnradpumpe und einer gemäß der EP-A 0 712 997 zur hydraulischen Betätigung einer Ventiltrieb-Verstellvorrichtung vorgesehenen, einstufigen Innenläufer-Zahnradpumpe veranschaulichen läßt. The disadvantage here is the installation space required for the separately arranged Pumps as well as the effort involved in mechanical drive connections for example by looking at one according to DE-A 38 40 356 as Lubrication pump for a single-stage internal rotor gear pump serving an internal combustion engine and one according to EP-A 0 712 997 for hydraulic actuation a valve train adjusting device provided, single-stage internal rotor gear pump can illustrate.

Der Erfindung liegt die Aufgabe zugrunde, für eine gattungsgemäße Brennkraftmaschine mit mittels Schmieröl versorgten gesonderten Hydraulikkreisen von insbesondere unterschiedlichen Drücken eine hinsichtlich Einbauraum und Antriebsaufwand günstige Pumpenanordnung aufzuzeigen.The invention has for its object for a generic internal combustion engine with separate hydraulic circuits supplied by lubricating oil, in particular different pressures in terms of installation space and drive effort to show favorable pump arrangement.

Diese Aufgabe ist mit dem Patentanspruch 1 gelöst, wobei die Erfindung sich kennzeichnet durch die Verwendung einer mittels eines Zwischenläufers zweistufigen Innenläufer-Zahnradpumpe mit gesonderten Druckanschlüssen, wobei jede Druckkammer über ein im Pumpengehäuse integriertes Druckbegrenzungsventil mit der jeweiligen Saugkammer in Verbindung steht.This object is achieved with claim 1, the invention itself characterized by the use of a two-stage by means of an intermediate runner Internal rotor gear pump with separate pressure connections, each Pressure chamber via a pressure relief valve integrated in the pump housing communicates with the respective suction chamber.

Der Einsatz einer derartigen, beispielsweise aus der DE-C 35 20 884 per se bekannten zweistufigen Innenläufer-Zahnradpumpe in einer gegenüber diesem Stand der Technik bezüglich der Versorgung gesonderter Hydraulikkreise mit insbesondere unterschiedlichen Drücken vorteilhaft weitergebildeten Ausführung ergibt in vorteilhafter Weise einen reduzierten Einbauraum sowie einen minimierten Antriebsaufwand. Die in einer Drehebene angeordneten drei Läufer bzw. Rotoren der Innenläufer-Zahnradpumpe ergeben in Verbindung mit den im Pumpengehäuse baulich integrierten Druckbegrenzungsventilen eine für einen reduzierten Einbauraum vorteilhaft kleinbauende Pumpe, die weiter mittels lediglich einer einzigen Antriebswelle einen wesentlich minimierten Antriebsaufwand ergibtThe use of such, known per se, for example from DE-C 35 20 884 two-stage internal rotor gear pump in a compared to this stand the technology regarding the supply of separate hydraulic circuits with in particular different pressures advantageously further developed results in advantageously a reduced installation space and a minimized drive effort. The three rotors or rotors of the Internal rotor gear pumps result in connection with those in the pump housing structurally integrated pressure relief valves one for a reduced installation space advantageous small-sized pump, which continues by means of only a single one Drive shaft results in a significantly minimized drive effort

In Ausgestaltung der Erfindung wird für eine ventilgesteuerte Brennkraftmaschine vorgeschlagen, daß der andere Hydraulikkreis der Steuerung/Regelung einer Ventiltrieb-Verstellvorrichtung, insbesondere einer Nockenwellen-Drehwinkel-Verstellvorrichtung dient, wobei die in der zweistufigen Innenläufer-Zahnradpumpe getrennten Hydraulikkreise vorteilhafterweise für unterschiedliche Drücke genutzt sind, wobei der Steuer-/Regeldruck gegenüber dem Förderdruck für das Schmiersystem größer gewählt ist.In an embodiment of the invention is for a valve-controlled internal combustion engine proposed that the other hydraulic circuit of the control / regulation of a valve train adjusting device, in particular a camshaft angle of rotation adjustment device serves, the separated in the two-stage internal rotor gear pump Hydraulic circuits advantageously used for different pressures are, the control pressure versus the delivery pressure for the lubrication system is chosen larger.

Das erfindungsgemäße Hydrauliksystem mit einer zweistufigen Innenläufer-Zahnradpumpe für gesonderte Hydraulikkreise ermöglicht weiter die vorteilhafte Ausgestaltung, daß der Schmiersystem-Hydraulikkreis bei Unterschreiten eines vorbestimmten Minimaldruckes über ein ansteuerbares 4-/2-Wegeventil mit dem Hydraulikkreis der Ventiltrieb-Verstellvorrichtung verbindbar ist, wobei dieses Wegeventil zur Vermeidung aufwendig angeordneter Druckleitungen ebenfalls im Pumpengehäuse integriert angeordnet ist.The hydraulic system according to the invention with a two-stage internal rotor gear pump for separate hydraulic circuits, the advantageous embodiment also enables that the lubrication system hydraulic circuit when falling below a predetermined Minimum pressure via a controllable 4- / 2-way valve with the hydraulic circuit the valve train adjustment device can be connected, this directional valve to avoid complex pressure lines also in the pump housing is integrated.

Die Erfindung ist anhand der Zeichnung beschrieben. Es zeigt

Figur 1
eine zweistufige Innenläufer-Zahnradpumpe,
Figur 2
einen Hydraulikplan zu dieser Zahnradpumpe für gesonderte Hydraulikkreise einer Brennkraftmaschine.
The invention is described with reference to the drawing. It shows
Figure 1
a two-stage internal rotor gear pump,
Figure 2
a hydraulic plan for this gear pump for separate hydraulic circuits of an internal combustion engine.

Eine mit 1 bezeichnete, zweistufige Innenläufer-Zahnradpumpe umfaßt einen außenverzahnten Innenläufer 2, der mit einem innen- und außen-verzahnten Zwischenläufer 3 zusammenwirkt, der seinerseits in einen in einem Pumpengehäuse 4 drehbeweglich gelagerten Außenläufer 5 mit Innenverzahnung eingreift. Getrennte Druckanschlüsse 6, 7 stehen mit einer jeweiligen Druckkammer 8, 9 in ölführender Verbindung. Für Saugkammem 10, 11 ist ein gemeinsamer Zulauf 12 vorgesehen, über den Schmieröl aus einer Ölwanne 13 einer lediglich in Figur 2 schematisch angedeuteten, mit 14 bezeichneten Brennkraftmaschine angesaugt ist.A, designated two-stage internal rotor gear pump comprises one externally toothed inner rotor 2, with an internally and externally toothed intermediate rotor 3 cooperates, which in turn in a in a pump housing 4th rotatably mounted external rotor 5 engages with internal teeth. separate Pressure connections 6, 7 are with a respective pressure chamber 8, 9 in oil-carrying Connection. A common inlet 12 is provided for suction chambers 10, 11, via the lubricating oil from an oil pan 13 only schematically in FIG indicated, indicated by 14 internal combustion engine.

Wie aus den Figuren 1 und 2 ersichtlich, steht die Druckkammer 8 bzw. der Druckanschluß 6 der Pumpenstufe 15 in einem ersten Hydraulikkreis 16 mit der zugeordneten Saugkammer 10 bzw. dem Zulauf 12 über ein Druckbegrenzungsventil 17 in ölführender Verbindung. Im zweiten Hydraulikkreis 18 steht die Druckkammer 9 bzw. der Druckanschluß 7 der zweiten Pumpenstufe 19 mit der Saugkammer 11 bzw. dem Zulauf 12 über ein Druckbegrenzungsventil 20 in Verbindung. Zur Einsparung gesonderter Leitungen sind die Druckbegrenzungsventile 17, 20 einschließlich der Verbindungskanäle in dem Pumpengehäuse 4 integriert angeordnet.As can be seen from FIGS. 1 and 2, the pressure chamber 8 or the pressure connection is located 6 of the pump stage 15 in a first hydraulic circuit 16 with the associated one Suction chamber 10 or the inlet 12 via a pressure relief valve 17 in oil-bearing connection. The pressure chamber 9 is located in the second hydraulic circuit 18 or the pressure connection 7 of the second pump stage 19 with the suction chamber 11 or the inlet 12 via a pressure relief valve 20 in connection. For saving separate lines include the pressure relief valves 17, 20 of the connection channels in the pump housing 4 arranged integrated.

Gemäß dem Hydraulikplan nach Figur 2 bildet der erste Hydraulikkreis 16 mit der Pumpenstufe 15 das Schmiersystem der Brennkraftmaschine 14. Der gesonderte zweite Hydraulikkreis 18 mit der Pumpenstufe 19 dient der Versorgung eines weiteren Verbrauchers 21, vorzugsweise der Steuerung/Regelung einer Ventiltrieb-Verstellvorrichtung, insbesondere einer Nockenwellen-Drehwinkel-Verstellvorrichtung.According to the hydraulic plan according to FIG. 2, the first hydraulic circuit 16 forms with the Pump stage 15 the lubrication system of the internal combustion engine 14. The separate one second hydraulic circuit 18 with the pump stage 19 is used to supply another Consumer 21, preferably the control of a valve train adjusting device, in particular a camshaft angle of rotation adjustment device.

Für den Hydraulikkreis 16 des Schmiersystems der Brennkraftmaschine 14 ist das Druckbegrenzungsventil 17 vorzugsweise auf einen Druck von 4 - 5 bar eingestellt, wogegen das Druckbegrenzungsventil 20 im zweiten Hydraulikkreis 18 für die Ventiltrieb-Verstellvorrichtung 21 beispielsweise auf einen Druck von 7 - 9 bar eingestellt istThis is for the hydraulic circuit 16 of the lubrication system of the internal combustion engine 14 Pressure relief valve 17 preferably set to a pressure of 4-5 bar, whereas the pressure relief valve 20 in the second hydraulic circuit 18 for the Valve train adjusting device 21, for example, set to a pressure of 7-9 bar is

Der erfindungsgemäße Einsatz der zweistufigen Innenläufer-Zahnradpumpe 1 an einer Brennkraftmaschine 14 zur Versorgung ihres Schmiersystems einerseits und einer Ventiltrieb-Verstellvorrichtung 21 andererseits ergibt neben einem minimierten Antriebsaufwand mit einer einzigen Antriebswelle für die drei Läufer bzw. Rotoren 2, 3 und 5 in einer Drehebene eine kurzbauende Pumpe 1, die durch Integration der Druckbegrenzungs- bzw. Druckregelventile 17, 20 einschließlich der Verbindungskanäle eine kompakte Ausgestaltung mit kleinem Einbauraum ergibt.The use of the two-stage internal rotor gear pump 1 according to the invention an internal combustion engine 14 to supply their lubrication system on the one hand and a valve train adjusting device 21 on the other hand results in addition to a minimized Drive effort with a single drive shaft for the three rotors or rotors 2, 3 and 5 in a rotary plane a short pump 1, which by integration the pressure limiting or pressure control valves 17, 20 including the connecting channels results in a compact design with a small installation space.

Weiter ist mit dem erfindungsgemäßen Einsatz der zweistufigen Innenläufer-Zahnradpumpe 1 für gesonderte Hydraulikkreise 16, 18 mit unterschiedlichen Drücken P1 und P2 die Möglichkeit eröffnet, im Betrieb der Brennkraftmaschine 14 dem Schmiersystem-Hydraulikkreis 16 Priorität dadurch einzuräumen, daß dieser Schmiersystem-Hydraulikkreis 16 bei Unterschreiten eines vorbestimmten Minimaldruckes - z.B. ca. 2 bar - über ein ansteuerbares 4-/2-Wege-Ventil 22 mit dem Hydraulikkreis 18 der Ventiltrieb-Verstellvorrichtung 21 verbindbar ist. Zur Vermeidung aufwendig angeordneter Druckleitungen ist dieses Wege-Ventil 22 ebenfalls im Pumpengehäuse 4 integriertFurthermore, the inventive use of the two-stage internal rotor gear pump 1 for separate hydraulic circuits 16, 18 with different pressures P 1 and P 2 opens up the possibility of giving priority to the lubrication system hydraulic circuit 16 during operation of the internal combustion engine 14 in that this lubrication system hydraulic circuit 16 if the pressure falls below a predetermined minimum pressure - for example approx. 2 bar - can be connected to the hydraulic circuit 18 of the valve train adjusting device 21 via a controllable 4- / 2-way valve 22. In order to avoid complex pressure lines, this directional valve 22 is also integrated in the pump housing 4

Claims (3)

  1. An internal combustion engine comprising separate hydraulic circuits supplied with lubricant oil,
    wherein each hydraulic circuit (16, 18) is associated with a pump (15, 19) and
    one of the hydraulic circuits (16) constitutes the lubricating system of the engine (14),
    characterised by use of a two-stage inner-rotor geared pump (1) comprising an intermediate rotor (3) and with separate pressure connections (6, 7), wherein
    each pressure chamber (8, 9) is connected to the respective suction chamber (10, 11) by a pressure-limiting valve (17, 20) incorporated in the pump casing (4).
  2. An engine according to claim 1, comprising a valve drive, characterised in that
    the other hydraulic circuit (18) is for open-loop/closed-loop control of a valve-drive adjusting device (21), especially a device for adjusting the angle of rotation of the camshaft, wherein
    the open-loop/closed-loop control pressure (P2) is made greater than the delivery pressure (P1) of the lubricating system.
  3. An engine according to claim 2, characterised in that
    if the pressure falls below a set minimum, the hydraulic circuit (16) for the lubricating system is connectable to the hydraulic circuit (18) of the adjusting device (21) via an actuatable 4/2-way valve (22), and
    the said valve (22) is incorporated in the pump casing (4).
EP97106781A 1996-06-05 1997-04-24 Internal combustion engine with two-stage internal gear pump Expired - Lifetime EP0811765B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19622688A DE19622688A1 (en) 1996-06-05 1996-06-05 Internal combustion engine with separate hydraulic circuits supplied with lubricating oil
DE19622688 1996-06-05

Publications (3)

Publication Number Publication Date
EP0811765A2 EP0811765A2 (en) 1997-12-10
EP0811765A3 EP0811765A3 (en) 1998-06-10
EP0811765B1 true EP0811765B1 (en) 2002-08-28

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Application Number Title Priority Date Filing Date
EP97106781A Expired - Lifetime EP0811765B1 (en) 1996-06-05 1997-04-24 Internal combustion engine with two-stage internal gear pump

Country Status (2)

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EP (1) EP0811765B1 (en)
DE (2) DE19622688A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113107637A (en) * 2020-01-13 2021-07-13 施瓦本冶金工程汽车有限公司 Fluid supply system for supplying a plurality of fluid consumers of a motor vehicle with fluid

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407563B (en) * 1998-02-26 2001-04-25 Tcg Unitech Ag OIL PUMP FOR AN INTERNAL COMBUSTION ENGINE
US6195990B1 (en) * 1999-01-13 2001-03-06 Valeo Electrical Systems, Inc. Hydraulic machine comprising dual gerotors
US6397796B1 (en) * 2001-03-05 2002-06-04 Ford Global Technologies, Inc. Oiling systems and methods for changing lengths of variable compression ratio connecting rods
DE10159147A1 (en) * 2001-12-01 2003-06-18 Zahnradfabrik Friedrichshafen Hydraulic gear pump has pump stages in one plane, one above other radially
DE10350632A1 (en) * 2003-10-29 2005-06-16 Gkn Sinter Metals Gmbh Double or multiple pump
US7290991B2 (en) * 2004-02-18 2007-11-06 General Motors Corporation Dual oil supply pump
DE102004058261A1 (en) * 2004-12-03 2006-06-08 Volkswagen Ag Oil pump, has low pressure oil cycle provided with one of pump stages for cooling of motor vehicle gearbox with cooling oil, where oil from low pressure oil cycle is taken out for prefilling clutch with help of quantity switching mechanism
DE102005014654B4 (en) 2005-03-31 2014-03-06 Gkn Driveline International Gmbh Motor vehicle hydraulic pump
JP4521005B2 (en) 2007-02-20 2010-08-11 株式会社山田製作所 Pressure control device in oil pump
CN102900665A (en) * 2012-10-16 2013-01-30 李庆中 Inside engaged gear pump or gear motor device with multilayer structure
US9951771B2 (en) 2013-04-08 2018-04-24 Danfoss Power Solutions Inc. Selectable flow hydraulic gear pump
GB2516523A (en) * 2013-04-08 2015-01-28 Danfoss Power Solutions Inc Selectable flow hydraulic gear pump
CN104929930B (en) * 2015-06-18 2017-03-01 河北睿智辰诚液压机械科技有限公司 A kind of gear pump being capable of high-low pressure confluence
CN109469609B (en) * 2018-11-08 2020-03-24 奇瑞汽车股份有限公司 Oil pump and engine lubricating system
CN112879279B (en) * 2021-01-27 2023-10-27 邵玉强 Duplex internal gear pump
DE102021133555A1 (en) 2021-12-16 2023-06-22 Endter SinterTechnics GmbH & Co. KG Gerotor unit and pump or motor with a gerotor unit

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933963C (en) * 1940-08-09 1955-10-06 Messerschmitt Boelkow Blohm Arrangement of auxiliary machines and devices for fuel delivery and allocation in internal combustion engines
DE2620480C2 (en) * 1976-05-08 1984-03-01 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Lubricating oil supply
US4204811A (en) * 1977-08-19 1980-05-27 The Garrett Corporation Fluid pumping system
US4658583A (en) * 1984-06-11 1987-04-21 Trw Inc. Double staged, internal rotary pump with flow control
DE3445454A1 (en) * 1984-12-13 1986-06-26 P.I.V. Antrieb Werner Reimers GmbH & Co KG, 6380 Bad Homburg Multistage internal-gear gear pump
DE3714087A1 (en) * 1986-05-10 1987-11-12 Volkswagen Ag Drive assembly with individual lubricating oil circuits for engine and transmission
DE3840356A1 (en) * 1987-12-05 1989-06-15 Barmag Barmer Maschf Lubricating oil pump in motor vehicles
DE3812411A1 (en) * 1988-04-14 1989-10-26 Walter Schopf Series pump-step arrangement with controllable useful delivery rate for mobile use
DE3921715A1 (en) * 1989-07-01 1991-01-10 Porsche Ag DEVICE FOR DRIVING TWO OIL PUMPS ON A PISTON PISTON INTERNAL COMBUSTION ENGINE
DE3933978A1 (en) * 1989-10-11 1991-05-02 Eisenmann Siegfried A SUCTION-CONTROLLED GEAR RING PUMP
JPH04132414U (en) * 1991-05-29 1992-12-08 株式会社アツギユニシア Internal combustion engine valve timing control device
JP3531769B2 (en) * 1994-08-25 2004-05-31 アイシン精機株式会社 Oil pump device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113107637A (en) * 2020-01-13 2021-07-13 施瓦本冶金工程汽车有限公司 Fluid supply system for supplying a plurality of fluid consumers of a motor vehicle with fluid
US11598071B2 (en) 2020-01-13 2023-03-07 Schwäbische Hüttenwerke Automotive GmbH Fluid supply system for supplying multiple fluid consumers of a motor vehicle with fluid
CN113107637B (en) * 2020-01-13 2023-03-10 施瓦本冶金工程汽车有限公司 Fluid supply system for supplying a plurality of fluid consumers of a motor vehicle with fluid

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DE19622688A1 (en) 1997-12-11
EP0811765A2 (en) 1997-12-10
EP0811765A3 (en) 1998-06-10
DE59708039D1 (en) 2002-10-02

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