DE102011005353A1 - Gearbox for motor car, has suction device connectable at potential oil collecting point and designed as jet pump which is utilized for removal of oil collected outside oil pump, when car is in slanting condition - Google Patents
Gearbox for motor car, has suction device connectable at potential oil collecting point and designed as jet pump which is utilized for removal of oil collected outside oil pump, when car is in slanting condition Download PDFInfo
- Publication number
- DE102011005353A1 DE102011005353A1 DE102011005353A DE102011005353A DE102011005353A1 DE 102011005353 A1 DE102011005353 A1 DE 102011005353A1 DE 102011005353 A DE102011005353 A DE 102011005353A DE 102011005353 A DE102011005353 A DE 102011005353A DE 102011005353 A1 DE102011005353 A1 DE 102011005353A1
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- Germany
- Prior art keywords
- oil
- pump
- jet pump
- potential
- gearbox
- 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.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
- F16H57/0438—Pumps of jet type, e.g. jet pumps with means to inject high pressure fluid to the suction area thereby supercharging the pump or means reducing cavitations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0443—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control for supply of lubricant during tilt or high acceleration, e.g. problems related to the tilt or extreme acceleration of the transmission casing and the supply of lubricant under these conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
- F16H57/0484—Gearings with gears having orbital motion with variable gear ratio or for reversing rotary motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Die Erfindung betrifft ein Getriebe für Kraftfahrzeuge nach dem Oberbegriff des Patentanspruches 1.The invention relates to a transmission for motor vehicles according to the preamble of claim 1.
Kraftfahrzeuggetriebe weisen einen Ölkreislauf mit einer Ölpumpe auf, welche das Öl zu Zwecken der Schmierung und Kühlung von Getriebekomponenten umwälzt. Das Öl sammelt sich im Bodenbereich des Getriebegehäuses, welcher als Ölwanne ausgebildet ist und den Ölsumpf aufnimmt. Aus dem Ölsumpf wird das Öl über einen Ölfilter von der Ölpumpe angesaugt und wieder auf die einzelnen Schmier- und Kühlstellen verteilt. Konventionelle Ölpumpen sind als mechanisch oder elektrisch angetriebene Zahnrad- oder Mondsichelpumpen ausgeführt.Automotive transmissions have an oil circuit with an oil pump, which circulates the oil for purposes of lubrication and cooling of transmission components. The oil collects in the bottom region of the transmission housing, which is designed as an oil pan and receives the oil sump. From the oil sump, the oil is sucked in by an oil filter from the oil pump and redistributed to the individual lubrication and cooling points. Conventional oil pumps are designed as mechanically or electrically driven gear or crescent pumps.
Durch die
Durch die
Das der Erfindung zu Grunde liegende Problem besteht darin, dass bei einer Neigung des Fahrzeuges, z. B. bei Bergabfahrt Öl aus der Ölwanne, d. h. aus dem Ölsumpf in tiefer liegende Bereiche des Getriebegehäuses läuft und sich dort sammelt. Es kann sich somit ein Ölspiegel bei Bergabfahrt ausbilden, welcher über den Bereich der Ölwanne hinausreicht und eine so genannte potentielle Ölsammelstelle bildet, und zwar im Bereich von rotierenden Getriebeteilen. Bei einem Eintauchen der rotierenden Getriebeteile, z. B. eines Torsionsschwingungsdämpfers mit relativ großem Durchmesser kommt es zu einer Verschäumung des Öls, welches dann nicht mehr für Schmier- oder Kühlzwecke zur Verfügung steht. Dies kann zu kritischen Situationen führen.The problem underlying the invention is that at an inclination of the vehicle, for. B. when driving downhill oil from the oil pan, d. H. from the oil sump into deeper areas of the gear housing runs and collects there. It can thus form an oil level at downhill, which extends beyond the area of the oil pan and forms a so-called potential oil collection point, in the range of rotating transmission parts. When immersing the rotating gear parts, z. As a torsional vibration damper with a relatively large diameter, there is a foaming of the oil, which is then no longer available for lubrication or cooling purposes. This can lead to critical situations.
Es ist daher Aufgabe der Erfindung, derartige kritische Situationen mit einer unzureichenden Ölversorgung des Getriebes zu vermeiden.It is therefore an object of the invention to avoid such critical situations with insufficient oil supply to the transmission.
Die Aufgabe der Erfindung wird durch die Merkmale der unabhängigen Patentansprüche 1 und 6 gelöst. Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.The object of the invention is solved by the features of
Erfindungsgemäß ist vorgesehen, dass im Bereich der potentiellen Ölsammelstelle, d. h. außerhalb der Ölwanne eine Absaugeinrichtung, die als Strahlpumpe ausgebildet ist, anschließbar ist. Sollte sich also bei Bergabfahrt des Fahrzeuges Öl in einem Bereich des Getriebegehäuses, in welchen rotierende Teile hineinragen, sammeln, so wird dieses Öl durch die Strahlpumpe abgesaugt, sodass der Verschäumungseffekt nicht eintreten kann. Die Ansaugöffnung für die Strahlpumpe wird vorteilhafterweise am tiefsten Punkt der potentiellen Ölsammelstelle angeordnet. Die Strahlpumpe kann direkt mit ihrer Ansaugöffnung in diesem Bereich angeordnet oder über eine Leitung mit diesem Bereich verbunden sein. Im Allgemeinen wird das Getriebe nur eine potentielle Ölsammelstelle aufweisen, es können jedoch auch mehr als eine sein.According to the invention, it is provided that in the area of the potential oil collecting point, i. H. outside the oil pan, a suction device, which is designed as a jet pump, can be connected. If oil collects in a region of the gear housing in which rotating parts protrude when the vehicle is traveling downhill, this oil is sucked out by the jet pump, so that the foaming effect can not occur. The suction opening for the jet pump is advantageously arranged at the lowest point of the potential oil collection point. The jet pump can be arranged directly with its intake opening in this area or be connected via a line with this area. In general, the transmission will only have one potential oil collection point, but it may be more than one.
Nach einer bevorzugten Ausführungsform wird die Strahlpumpe vom Drucköl der Ölpumpe des Fahrzeuges angetrieben. In der Regel wird die Ölpumpe, z. B. eine Schmieröl- oder eine Kühlölpumpe, permanent von der Brennkraftmaschine des Fahrzeuges angetrieben, sodass auch die Strahlpumpe permanent angetrieben wird. Da die Strahlpumpe jedoch keine bewegten mechanischen Teile aufweist, kann sie auch im „Trockensumpf” laufen, ohne dass Beschädigungen auftreten.According to a preferred embodiment, the jet pump is driven by the pressure oil of the oil pump of the vehicle. In general, the oil pump, z. As a lubricating oil or a cooling oil pump, permanently driven by the internal combustion engine of the vehicle, so that the jet pump is permanently driven. However, since the jet pump has no moving mechanical parts, it can also run in the "dry sump" without causing damage.
Nach einer weiteren bevorzugten Ausführungsform weist die Strahlpumpe einen Drucköleingang, eine Ansaugöffnung und einen Ölausgang auf, wobei die Ansaugöffnung direkt oder indirekt, z. B. über eine Saugleitung mit der mindestens einen potentiellen Ölsammelstelle verbunden ist.According to a further preferred embodiment, the jet pump to a pressure oil inlet, an intake port and an oil outlet, wherein the suction port directly or indirectly, for. B. is connected via a suction line with the at least one potential oil collection point.
Nach einer weiteren bevorzugten Ausführungsform ist der Drucköleingang der Strahlpumpe direkt oder indirekt mit dem Druckölausgang der Ölpumpe verbunden. Zweckmäßigerweise kann dies über eine Druckleitung erfolgen, da sich die Strahlpumpe und die antreibende Ölpumpe an verschiedenen Stellen im Getriebe befinden.According to a further preferred embodiment, the pressure oil inlet of the jet pump is connected directly or indirectly with the pressure oil outlet of the oil pump. Conveniently, this can be done via a pressure line, since the jet pump and the driving oil pump are located at different points in the transmission.
In diesem Zusammenhang ist es möglich, dass zwischen dem Drucköleingang der Strahlpumpe und dem Druckölausgang der Ölpumpe ein oder mehrere hydraulische Vorrichtungen angeordnet sind. Dies können hydraulische Verbraucher wie beispielsweise ein hydraulisches oder elektrohydraulisches Steuergerät, ein Kühler, Schmierungsleitungen, ein Überlaufbehälter oder weitere Pumpen sein.In this context, it is possible that between the Drucköleingang the Jet pump and the pressure oil outlet of the oil pump one or more hydraulic devices are arranged. These may be hydraulic loads such as a hydraulic or electro-hydraulic controller, a cooler, lubrication lines, an overflow tank or other pumps.
Nach einer weiteren bevorzugten Ausführungsform ist die Strahlpumpe in das Getriebegehäuse integriert. Dabei ist die Strahlpumpe vorteilhafterweise im Inneren des Getriebegehäuses und in dessen Bodenbereich angeordnet.According to a further preferred embodiment, the jet pump is integrated in the transmission housing. In this case, the jet pump is advantageously arranged in the interior of the transmission housing and in the bottom region thereof.
Nach einem weiteren Aspekt der Erfindung wird die Strahlpumpe zum Absaugen von Öl verwendet, welches sich bei Neigung des Fahrzeuges in kritischen Bereichen des Getriebegehäuses, einer potentiellen Ölsammelstelle, außerhalb der Ölwanne sammelt. Damit erfolgt ein automatisches Absaugen von übergelaufenem Öl, sodass keine Schäden durch Verschäumung und unzureichende Ölversorgung auftreten können.According to a further aspect of the invention, the jet pump is used for the extraction of oil, which collects at inclination of the vehicle in critical areas of the gear housing, a potential oil collection point, outside the oil pan. Thus, an automatic suction of overflowed oil, so that no damage can occur due to foaming and insufficient oil supply.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben, wobei sich aus der Beschreibung und/oder der Zeichnung weitere Merkmale und/oder Vorteile ergeben können. Es zeigenAn embodiment of the invention is illustrated in the drawing and will be described in more detail below, which may result from the description and / or the drawing further features and / or advantages. Show it
Der Ölspiegel, der sich bei Bergabfahrt einstellt, ist durch eine fett dargestellte, horizontale Gerade
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Getriebetransmission
- 22
- Getriebegehäusegearbox
- 2a2a
- Bodenground
- 33
- Ölwanneoil pan
- 44
- motorseitiger Flanschmotor-side flange
- 55
- getriebeseitiger FlanschGearbox side flange
- 66
- Torsionsschwingungsdämpfertorsional vibration damper
- 77
- Ölspiegeloil level
- 88th
- potentielle Ölsammelstellepotential oil collection point
- 99
- Absaugöffnungsuction
- 1010
- Strahlpumpejet pump
- 1111
- Pumpengehäusepump housing
- 1212
- DrucköleingangPressure oil input
- 1313
- Ansaugöffnungsuction
- 14 14
- Ölausgangoil output
- 1515
- Treibdüsepropelling nozzle
- 1616
- Mischkammermixing chamber
- 1717
- Ringkammerannular chamber
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102005042685 A1 [0003] DE 102005042685 A1 [0003]
- DE 4227119 A1 [0004] DE 4227119 A1 [0004]
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011005353A DE102011005353A1 (en) | 2011-03-10 | 2011-03-10 | Gearbox for motor car, has suction device connectable at potential oil collecting point and designed as jet pump which is utilized for removal of oil collected outside oil pump, when car is in slanting condition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011005353A DE102011005353A1 (en) | 2011-03-10 | 2011-03-10 | Gearbox for motor car, has suction device connectable at potential oil collecting point and designed as jet pump which is utilized for removal of oil collected outside oil pump, when car is in slanting condition |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011005353A1 true DE102011005353A1 (en) | 2012-09-13 |
Family
ID=46705294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102011005353A Withdrawn DE102011005353A1 (en) | 2011-03-10 | 2011-03-10 | Gearbox for motor car, has suction device connectable at potential oil collecting point and designed as jet pump which is utilized for removal of oil collected outside oil pump, when car is in slanting condition |
Country Status (1)
Country | Link |
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DE (1) | DE102011005353A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11305631B2 (en) * | 2018-06-04 | 2022-04-19 | Schaeffler Technologies AG & Co. KG | Drive train unit for a hybrid vehicle, transmission unit and drive train |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4091905A (en) * | 1976-12-27 | 1978-05-30 | Allis-Chalmers Corporation | Sump oil transfer system |
DE4227119A1 (en) | 1992-08-17 | 1994-02-24 | Kloeckner Humboldt Deutz Ag | Oil circulation for farm tractor gearbox and hydraulic ram - has oil supply to base of sump with injector pump driven by return flow pressure |
EP0479081B1 (en) * | 1990-09-25 | 1994-06-22 | Deere & Company | Pressure supply system for a vehicle transmission |
DE19800490A1 (en) * | 1997-01-31 | 1998-08-20 | Audi Ag | Cooling system for double disc clutches for vehicle transmission systems |
DE10032510A1 (en) * | 1999-07-12 | 2001-02-08 | Scania Cv Ab | Transmission for heavy vehicle, with oil feed unit for at least one gear wheel pair |
DE10151019A1 (en) * | 2000-10-19 | 2002-07-11 | Zahnradfabrik Friedrichshafen | Drive assembly esp. for motor vehicles and mobile working machinery has several housing sections, one with low oil level containing intake tube leading into ejector in oil circuit return |
DE102005042685A1 (en) | 2005-08-10 | 2007-02-15 | Bayerische Motoren Werke Ag | Transmission with two transmission oil pumps |
US20090114498A1 (en) * | 2006-03-07 | 2009-05-07 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Clutch unit including a wet clutch |
DE102008043302A1 (en) * | 2008-10-30 | 2010-05-06 | Zf Friedrichshafen Ag | Transmission arrangement for vehicle, has supplying circuits that are coupled with each other via blocking element i.e. check valve, for direction-dependent limiting of supply flow between supplying circuits |
-
2011
- 2011-03-10 DE DE102011005353A patent/DE102011005353A1/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4091905A (en) * | 1976-12-27 | 1978-05-30 | Allis-Chalmers Corporation | Sump oil transfer system |
EP0479081B1 (en) * | 1990-09-25 | 1994-06-22 | Deere & Company | Pressure supply system for a vehicle transmission |
DE4227119A1 (en) | 1992-08-17 | 1994-02-24 | Kloeckner Humboldt Deutz Ag | Oil circulation for farm tractor gearbox and hydraulic ram - has oil supply to base of sump with injector pump driven by return flow pressure |
DE19800490A1 (en) * | 1997-01-31 | 1998-08-20 | Audi Ag | Cooling system for double disc clutches for vehicle transmission systems |
DE10032510A1 (en) * | 1999-07-12 | 2001-02-08 | Scania Cv Ab | Transmission for heavy vehicle, with oil feed unit for at least one gear wheel pair |
DE10151019A1 (en) * | 2000-10-19 | 2002-07-11 | Zahnradfabrik Friedrichshafen | Drive assembly esp. for motor vehicles and mobile working machinery has several housing sections, one with low oil level containing intake tube leading into ejector in oil circuit return |
DE102005042685A1 (en) | 2005-08-10 | 2007-02-15 | Bayerische Motoren Werke Ag | Transmission with two transmission oil pumps |
US20090114498A1 (en) * | 2006-03-07 | 2009-05-07 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Clutch unit including a wet clutch |
DE102008043302A1 (en) * | 2008-10-30 | 2010-05-06 | Zf Friedrichshafen Ag | Transmission arrangement for vehicle, has supplying circuits that are coupled with each other via blocking element i.e. check valve, for direction-dependent limiting of supply flow between supplying circuits |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11305631B2 (en) * | 2018-06-04 | 2022-04-19 | Schaeffler Technologies AG & Co. KG | Drive train unit for a hybrid vehicle, transmission unit and drive train |
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Legal Events
Date | Code | Title | Description |
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R163 | Identified publications notified | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20131001 |