DE102007044107A1 - Doubly power-splitting transmission for hybrid vehicle, has differential e.g. planetary gear, exhibiting three differential shafts, where two shafts are coupled with one another by switchable clutch which exhibits adjustable coupling - Google Patents
Doubly power-splitting transmission for hybrid vehicle, has differential e.g. planetary gear, exhibiting three differential shafts, where two shafts are coupled with one another by switchable clutch which exhibits adjustable coupling Download PDFInfo
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- DE102007044107A1 DE102007044107A1 DE102007044107A DE102007044107A DE102007044107A1 DE 102007044107 A1 DE102007044107 A1 DE 102007044107A1 DE 102007044107 A DE102007044107 A DE 102007044107A DE 102007044107 A DE102007044107 A DE 102007044107A DE 102007044107 A1 DE102007044107 A1 DE 102007044107A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
- B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
- F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
- F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
- F16H3/728—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path with means to change ratio in the mechanical gearing
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H2037/0866—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/10—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts
- F16H2037/102—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts the input or output shaft of the transmission is connected or connectable to two or more differentials
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/10—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing at both ends of intermediate shafts
- F16H2037/104—Power split variators with one end of the CVT connected or connectable to two or more differentials
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2005—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with one sets of orbital gears
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/202—Transmissions using gears with orbital motion characterised by the type of Ravigneaux set
- F16H2200/2023—Transmissions using gears with orbital motion characterised by the type of Ravigneaux set using a Ravigneaux set with 4 connections
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2033—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with one engaging means
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
Description
Die Erfindung betrifft ein leistungsverzweigtes Getriebe, umfassend
- – ein Differential mit drei Differentialwellen, nämlich einer Eingangswelle, die mit einer Verbrennungsmaschine koppelbar oder gekoppelt ist, einer ersten Ausgangswelle und einer zweiten Ausgangswelle,
- – eine erste, vorwiegend generatorisch arbeitende elektrische Maschine, die mit der ersten Ausgangswelle des Differentials gekoppelt ist, und eine zweite, vorwiegend motorisch arbeitende elektrische Maschine, die mit einer Abtriebswelle des Getriebes gekoppelt ist und die mit der ersten elektrischen Maschine als ein Variator zusammenwirkt, sowie
- – einen Knoten, der die zweite Ausgangswelle des Differentials und die Abtriebswelle koppelt.
- A differential with three differential shafts, namely an input shaft which can be coupled or coupled to an internal combustion engine, a first output shaft and a second output shaft,
- A first predominantly regenerative electric machine coupled to the first output shaft of the differential and a second predominantly motorized electric machine coupled to an output shaft of the transmission and cooperating with the first electric machine as a variator; such as
- A node coupling the second output shaft of the differential and the output shaft.
Derartige Getriebestrukturen sind als einfach leistungsverzweigte Getriebe mit eingangsseitigem Differential, kurz ELVeD, bekannt.such Transmission structures are as simple power split transmissions with input-side differential, in short ELVeD known.
Die Erfindung betrifft weiter ein leistungsverzweigtes Getriebe, umfassend
- – ein erstes Differential mit drei Differentialwellen, nämlich einer Eingangswelle, einer ersten Ausgangswelle und einer zweiten Ausgangswelle,
- – eine erste, vorwiegend generatorisch arbeitende elektrische Maschine, die mit der ersten Ausgangswelle des ersten Differentials gekoppelt ist, und eine zweite, vorwiegend motorisch arbeitende elektrische Maschine, die mit der ersten elektrischen Maschine als ein Variator zusammenwirkt,
- – ein zweites Differential mit drei Differentialwellen, nämlich einer ersten Eingangswelle, die mit der zweiten Elektromaschine gekoppelt ist, einer zweiten Eingangswelle, die mit einer der Differentialwellen des ersten Differentials, nämlich dessen Eingangswelle oder dessen erster Ausgangswelle, gekoppelt ist, und einer Ausgangswelle, die mit einer Abtriebswelle des Getriebes gekoppelt ist, sowie
- – wenigstens zwei Knoten zur Kopplung je zweier der vorgenannten, gekoppelten Wellen.
- A first differential with three differential shafts, namely an input shaft, a first output shaft and a second output shaft,
- A first predominantly regenerative electric machine coupled to the first output shaft of the first differential and a second predominantly motorized electric machine cooperating with the first electric machine as a variator;
- A second differential having three differential shafts, namely a first input shaft coupled to the second electric machine, a second input shaft coupled to one of the differential shafts of the first differential, namely its input shaft or first output shaft, and an output shaft coupled with an output shaft of the transmission, as well
- - At least two nodes for coupling each of two of the aforementioned coupled waves.
Derartige Getriebestrukturen sind als doppelt leistungsverzweigte Getriebe, kurz DLV, bekannt.such Transmission structures are as double power split transmissions, short DLV, known.
Fahrzeuggetriebe im Allgemeinen ermöglichen die Anpassung eines vom Verbrennungsmotor erzeugten Lieferkennfeldes an ein an der angetriebenen Achse bzw. den angetriebenen Achsen benötigtes Bedarfskennfeld durch Wandlung von Drehzahl und Drehmoment. Eine stufenlose Wandlung ist beispielsweise durch ein elektrisches Getriebe möglich, wobei ein am Verbrennungsmotor angeordneter Generator zur Stromerzeugung genutzt wird, welche eine oder mehrere am Abtrieb angeordnete elektrischen Maschinen antreibt, die im motorischen Betrieb das benötigte Drehmoment bei geeigneter Drehzahl erzeugen. In speziellen Fahrsituationen können jedoch auch die vorwiegend generatorisch arbeitende Maschine motorisch arbeiten bzw. die vorwiegend motorisch arbeitende Maschine oder Maschinen generatorisch arbeiten. Durch Hinzufügung einer elektrischen Energiespeicherung hoher Speicherkapazität samt einer geeigneten Leistungselektronik lässt sich ein hybrider Antriebsstrang mit bekannten Zusatzfunktionen eines Hybridfahrzeugs realisieren.vehicle transmissions generally allow the adaptation of a delivery characteristic field generated by the internal combustion engine to a on the driven axle or the driven axles needed Demand map through conversion of speed and torque. A Stepless conversion is for example by an electric transmission possible, where a generator arranged on the internal combustion engine for generating electricity is used, which one or more arranged on the output electric Machines drive, which in engine operation the required torque generate at a suitable speed. In special driving situations, however, can also the predominantly regenerative working motor work or the predominantly motor-operated machine or Machines work as a generator. By adding an electrical energy storage high storage capacity together with a suitable power electronics can be a hybrid powertrain realize with known additional functions of a hybrid vehicle.
Insbesondere bei Hybridfahrzeugen muss in extremen Fahrsituationen die gesamte verbrennungsmotorische Leistung in elektrische Leistung und anschleißend wieder in mechanische Leistung umgewandelt werden. Hierzu ist in der Regel eine große Dimensionierung der elektrischen Maschinen erforderlich, was mit hohen Kosten und ungünstigen Getriebewirkungsgraden in vielen Betriebszuständen verbunden ist.Especially in hybrid vehicles, the entire must in extreme driving situations combustion engine power into electrical power and then again be converted into mechanical power. This is usually a big Sizing the electrical machines required, what with high costs and unfavorable transmission efficiencies connected in many operating states is.
Diesem Problem wird im Stand der Technik mit dem Prinzip der so genannten Leistungsverzweigung begegnet. Dabei wird die vom Verbrennungsmotor abgegebene Leistung durch ein so genanntes Differential, das häufig als Planetengetriebe ausgeführt ist, beispielsweise aber auch als eine nicht am Gehäuse abgestützte elektrische Maschine realisiert sein kann, aufgeteilt. Nur ein Teil der Verbrennungsmotorleistung wird durch einen Zweig mit den zwei elektrischen Maschinen unter Wandlung von Drehmoment und Drehzahl geleitet. Die restliche Leistung wird über ein oder mehrere mechanische Leistungszweige mit konstanter Übersetzung zum Abtrieb geführt. Abtriebseitig werden die Leistungen der Zweige an einem so genannten Knoten, der beispielsweise als Welle-Nabe-Verbindung oder Zahnradstufe ausgeführt sein kann, zusammengeführt. Als ein Grundtyp einer solchen Leistungsverzweigung ist die so genannte einfache Leistungsverzweigung mit eingangsseitigem Differential, kurz ELVeD, bekannt. Ein weiterer, komplexerer Grundtyp leistungsverzweigter Getriebestrukturen ist die so genannte doppelte Leistungsverzweigung, kurz DLV, die ebenfalls im Stand der Technik bekannt ist. Hierbei stehen neben dem elektrischen Zweig zwei mechanische Zweige zur Verfügung, so dass die Leistung von der Verbrennungsmaschine zum Abtrieb über drei Teilzweige verteilt wird.this Problem is in the prior art with the principle of so-called Power split encountered. It is the combustion engine delivered power through a so-called differential, often as Planetary gear executed is, for example, but also as a not supported on the housing electrical Machine can be realized, split. Only part of the engine power gets under by a branch with the two electric machines Conversion of torque and speed passed. The remaining power will be over or several mechanical power branches with constant translation led to the downforce. On the output side, the services of the branches are connected to a so-called Node, for example, as a shaft-hub connection or gear stage accomplished can be merged. As a basic type of such a power split is the so-called simple power split with input differential, short ELVeD, known. Another, more complex basic type of power-split transmission structures is the so-called double power split, short DLV, the also known in the art. Here are next the electrical branch two mechanical branches available, so that the power from the combustion engine to the output over three Sub-branches is distributed.
Die ELVeD erfordert im Vergleich zu anderen leistungsverzweigten Getriebestrukturen prinzipbedingt eine leistungs- und drehmomentstarke abtriebseitige zweite elektrische Maschine. Der mechanische Aufwand einer ELVeD ist jedoch vergleichsweise gering. Diese Kombination ist für Fahrzeuge günstig, an die die Forderung nach einer großen elektrischen Leistung gestellt wird, um längere Strecken mit angemessener Fahrleistung rein elektrisch fahren zu können. Da hierfür eine große elektrische Leistung installiert werden muss, sollte der zusätzliche mechanische Aufwand so gering wie möglich sein. Für diese Fälle ist die ELVeD besonders geeignet, zumal die leistungsstarke elektrische Maschine durch ihre antriebsnahe Anordnung und die damit verbundene kurze Verlustkette einen vergleichsweise guten Wirkungsgrad beim elektrischen Fahren und beim Rekuperieren von Bremsenergie mit sich bringt.Compared to other power-split transmission structures, the ELVeD requires a high-performance, high-torque output-side second electric machine as a matter of principle. However, the mechanical complexity of an ELVeD is comparatively low. This combination is favorable for vehicles to which the demand for a large electric power is provided in order to drive longer distances with appropriate driving performance purely electric. Since a large electrical power must be installed for this, the additional mechanical effort should be as low as possible. For these cases, the ELVeD is particularly suitable, especially since the powerful electric machine with its drive-close arrangement and the associated short loss chain brings a comparatively good efficiency in electric driving and recuperation of braking energy with it.
Bekannte ELVeD-Getriebe haben den Nachteil, dass keine rein mechanische Leistungsübertragung möglich ist, da die erste elektrische Maschine stets ein Abstützmoment der mit ihr gekoppelten Welle des Differentials, insbesondere eines Sonnenrades eines Planetengetriebes aufbringen muss, was sich negativ auf den Getriebewirkungsgrad auswirkt. Ein weiterer Nachteil ist, dass beim Anfahren aus dem Stillstand zunächst die erste elektrische Maschine mit der vollen Verbrennungsmotorleistung belastet wird, da über den stehenden Abtrieb keine Leistung abgeführt werden kann und somit keine Leistung über den mechanischen Teilzweig abgezweigt wird. Um die erste elektrische Maschine nicht zu überlasten, ist es daher bei bekannten Strukturen erforderlich, den Verbrennungsmotor beim Anfahren zu drosseln. Dies wirkt sich negativ auf die dargestellten Zugkräfte aus. Alternativ könnte eine leistungsstärkere erste elektrische Maschine eingesetzt werden, was jedoch mit höheren Kosten verbunden ist.Known ELVeD transmissions have the disadvantage that no purely mechanical power transmission possible is because the first electric machine always a support torque the coupled with her shaft of the differential, in particular one Sun gear of a planetary gear must apply, which is negative affects the transmission efficiency. Another disadvantage is that when starting from standstill first the first electric Machine is loaded with the full engine power, over there the standing output no power can be dissipated and thus no Performance over the mechanical partial branch is branched off. To the first electric Machine not to overload, It is therefore necessary in known structures, the internal combustion engine to throttle when starting. This has a negative effect on the tensile forces shown. Alternatively could a more powerful one first electric machine to be used, but at a higher cost connected is.
Es ist eine Aufgabe der vorliegenden Erfindung, ein einfach leistungsverzweigtes Getriebe mit eingangsseitigem Differential zur Verfügung zu stellen, welches einen rein mechanischen Gang vorsieht.It is an object of the present invention, a simple power-split Gearbox with input differential available too which provides a purely mechanical gait.
Diese Aufgabe wird in Verbindung mit den Merkmalen des Oberbegriffs von Anspruch 1 dadurch gelöst, dass zwei der Differentialwellen mittels einer Koppelwelle, die eine schaltbare Kupplung aufweist, miteinander gekoppelt sind.These Task is combined with the features of the preamble of Claim 1 solved by that two of the differential shafts by means of a coupling shaft, the has a switchable coupling, are coupled together.
Diese Aufgabe wird alternativ in Verbindung mit den Merkmalen des Oberbegriffs von Anspruch 16 dadurch gelöst, dass die erste Ausgangswelle mit einer ihr Drehmoment abstützenden, schaltbaren Bremse versehen ist.These Task is alternatively in conjunction with the features of the preamble solved by claim 16, that the first output shaft with a torque supporting it, switchable brake is provided.
Der Vorteil der Erfindung liegt darin, dass ein mechanischer Gang geschaffen wird, bei dem keine Leistung über die elektrischen Maschinen übertragen wird, sondern der Leistungsfluss über nur wenige Zahnradstufen mit größtmöglichem Wirkungsgrad erfolgt. Bei geeigneter Auslegung kann dieser mechanische Gang einen Geschwindigkeitsbereich von unter 50 km/h bis zur Fahrzeughöchstgeschwindigkeit abdecken, so dass der Hauptteil des Energieumsatzes Wirkungsgrad optimal erfolgen kann. Dabei ist die Realisierung des mechanischen Ganges durch ein einfaches Schaltelement, nämlich eine oder mehrere Kupplungen oder eine Bremse, mechanisch besonders wenig aufwendig.Of the Advantage of the invention is that a mechanical gear created is where no power over the electrical machinery is transferred, but the power flow over only a few gear stages with the largest possible Efficiency takes place. With a suitable design of this mechanical Gear covers a speed range of less than 50 km / h up to the maximum speed of the vehicle, so that the main part of the energy conversion efficiency is optimal can. Here is the realization of the mechanical gear by a simple switching element, namely one or more clutches or a brake, mechanically particular little expensive.
Ein weiterer Vorteil des den mechanischen Gang ermöglichenden Schaltelementes ist die Entlastung der verbrennungsmotorseitigen ersten elektrischen Maschine beim Anfahren. Das Schaltelement, d. h. Kupplung oder Bremse, kann schlupfend einen Teil des Abstützmoments an der Eingangswelle der ersten Elektromaschine aufbringen, so dass die erste Elektromaschine nicht die volle Verbrennungsleistung aufnehmen muss. Damit kann auch bei einer klein dimensionierten elektrischen Maschine auf eine Drosselung des Verbrennungsmotors beim Anfahren mit hoher Last verzichtet werden, wodurch höhere Zugkräfte ermöglicht werden.One Another advantage of the mechanical gear enabling switching element is the discharge of the combustion engine side first electrical Machine when starting. The switching element, d. H. Clutch or brake, can slipping a part of the support torque on the input shaft the first electric machine, so that the first electric machine does not have to absorb the full combustion power. So that can even with a small-sized electric machine on one Throttling the internal combustion engine omitted when starting with high load become higher tensile forces allows become.
Bei Ausführungsformen, bei denen das Schaltelement als ein oder mehrere Kupplungen ausgebildet ist, sind unterschiedliche Varianten denkbar. Bei einer günstigen Variante verbindet die Koppelwelle die Eingangswelle und die zweite Ausgangswelle miteinander. Bei einer ersten Alternative verbindet die Koppelwelle die Eingangswelle und die Abtriebswelle miteinander. Bei einer zweiten Alternative verbindet die Koppelwelle die erste Ausgangswelle und die Abtriebswelle miteinander.at Embodiments, in which the switching element is designed as one or more clutches is, different variants are conceivable. At a cheap Variant connects the coupling shaft, the input shaft and the second Output shaft with each other. In a first alternative connects the coupling shaft, the input shaft and the output shaft with each other. In a second alternative, the coupling shaft connects the first Output shaft and the output shaft with each other.
Je nach den Übersetzungserfordernissen des Einzelfalls kann vorgesehen sein, dass der Kupplung eine feste Übersetzungsstufe vor oder nachgeschaltet ist. Die Übersetzungsstufe kann dabei als Stirnradstufe, Vorlegewelle, Planetengetriebe mit einer gehäusefesten Welle oder, besonders bevorzugt, als exzentrisch gelagertes Hohlrad mit Außenverzahnung ausgestaltet sein.ever according to the translation requirements of the In individual cases it can be provided that the clutch has a fixed gear ratio is before or after. The translation level can be as spur gear, countershaft, planetary gear with a housing-fixed Shaft or, more preferably, as an eccentrically mounted ring gear with external teeth be designed.
Alternativ zu der festen Übersetzungsstufe können der Kupplung schaltbare Übersetzungsstufen vor- oder nachgeschaltet sein.alternative to the fixed translation stage, the Clutch switchable gear ratios be upstream or downstream.
Wie eingangs bereits erwähnt, bezieht sich die vorliegende Erfindung auch auf eine doppelt leistungsverzweigte Getriebestruktur. Getriebe mit doppelter Leistungsverzweigung stellen stufenlose Getriebe dar, bei denen bei geeigneter Auslegung insbesondere bei mittleren und langen Getriebeübersetzungen nur ein geringer Teil der übertragenen Leistung durch den elektrischen Zweig fließt, da der größere Leistungsanteil über die mechanischen Pfade übertragen wird. Dies bietet die Vorteile einer geringeren Leistungsanforderung an die elektrischen Maschinen sowie die Vorteil eines guten Getriebewirkungsgrades in den relevanten Betriebspunkten mit größtem Energieumsatz.As already mentioned at the beginning, The present invention also relates to a dual-branched one Transmission structure. Set gearbox with double power split continuously variable transmission, in which with a suitable design in particular for medium and long gear ratios only a small Part of the transferred Power flows through the electrical branch, as the larger power share over the transmitted mechanical paths becomes. This offers the benefits of a lower power requirement to the electric machines as well as the advantage of a good transmission efficiency in the relevant operating points with the highest energy turnover.
Auch bei doppelt leistungsverzweigten Getriebestrukturen, kurz DLV-Strukturen, besteht der Wunsch nach der Realisierung eines oder mehrerer rein mechanischer Gänge.Also in double power split transmission structures, short DLV structures, there is a desire for the realization of one or more pure mechanical gears.
Es ist daher eine weitere Aufgabe der vorliegenden Erfindung, doppelt leistungsverzweigte Getriebestrukturen mit wenigstens einem mechanischen Gang zur Verfügung zu stellen.It is therefore a further object of the present invention, double power split transmission structures with at least one mechanical Gear available to deliver.
Diese Aufgabe wird in Verbindung mit den Merkmalen des Oberbegriffs von Anspruch 5 dadurch gelöst, dass zwei der Differentialwellen wenigstens eines Differentials mittels einer Koppelwelle, die eine schaltbare Kupplung aufweist, miteinander gekoppelt sind. Diese Aufgabe wird alternativ in Verbindung mit den Merkmalen des Oberbegriffs von Anspruch 17 dadurch gelöst, dass die erste Ausgangswelle des ersten Differentials mit einer ihr Drehmoment abstützenden, schaltbaren Bremse versehen ist.These Task is combined with the features of the preamble of Claim 5 solved by that two of the differential shafts of at least one differential by means of a coupling shaft, which has a switchable coupling, coupled together. This task is alternatively connected solved with the features of the preamble of claim 17, characterized in that the first output shaft of the first differential with a torque supporting, switchable brake is provided.
Werden die Differentialwellen nur eines Differentials mit der Koppelwelle mit schaltbarer Kupplung gekoppelt, entspricht dies der Realisierung eines mechanischen Ganges. Bei Verwirklichung einer Kopplungsmöglichkeit von je zwei Differentialwellen jedes Differentials können zwei mechanische Gänge dargestellt werden.Become the differential shafts of only one differential with the coupling shaft coupled with switchable coupling, this corresponds to the realization a mechanical gear. When a coupling possibility is realized of every two differential shafts of each differential can be two Mechanical gears shown become.
Insbesondere
bei besonders leistungs- und drehmomentstarken Verbrennungsmotoren
mit geringer Drehzahlspreizung besitzen DLV-Strukturen prinzipbedingte
Einschränkungen,
bei denen die Erfindung Maßnahmen
vorsieht, um diese bei entsprechenden Anforderungen zu vermeiden:
Bei
relativ geringer Leistung der elektrischen Maschinen, bezogen auf
die Verbrennungsmotorleistung, ist bei der Auslegung von DLV-Strukturen
ein Kompromiss aus hohen Anfahrzugkräften auf der einen und einer
langen Getriebespreizung mit verbrauchsgünstigem Overdrive auf der anderen
Seite erforderlich. Durch einen über
eine Kupplung zuschaltbaren zusätzlichen
mechanischen Leistungspfad mit vorzugsweise je einer schaltbaren
großen
und kleinen Übersetzung
wird einerseits Anfahren und Fahren bei geringen Geschwindigkeiten
mit dauerhaft sehr hohen Zugkräften
und andererseits ein verbrauchsoptimaler langer Overdrivegang bei
sehr großer
Getriebespreizung ermöglicht.
Die Übersetzungen
im zusätzlichen mechanischen
Leistungspfad können über einfache Klauenkupplungen
gewählt
werden, da die beiden mechanischen Gänge die Getriebeextremübersetzungen
darstellen und damit im stufenlosen, leistungsverzweigten Übersetzungsbereich
dazwischen ein geeigneter Gang vorgewählt werden kann.Particularly in the case of particularly high-performance and high-torque internal combustion engines with a low speed spread, DLV structures have inherent limitations, in which the invention provides for measures in order to avoid them with corresponding requirements:
With relatively low power of the electrical machines, based on the engine performance, in the design of DLV structures a compromise of high Anfahrzugkräften on the one hand and a long gear spread with low-consumption overdrive on the other side is required. By a switchable via a clutch additional mechanical power path with preferably one each switchable large and small translation on the one hand startup and driving at low speeds with permanently very high tensile forces and on the other hand, a consumption-optimized long Overdrivegang possible with very large transmission spread. The translations in the additional mechanical power path can be selected via simple jaw clutches, since the two mechanical gears represent the transmission extreme ratios and thus a suitable gear can be selected in the stepless, power-split transmission range in between.
Bei einfachen DLV-Strukturen müssen beim elektrischen Fahren die elektrischen Maschinen so geregelt werden, dass der Verbrennungsmotor steht. Dabei muss eine elektrische Maschine generatorisch arbeiten, wofür ein Teil der motorischen Leistung der zweiten elektrischen Maschine durch das Getriebe zurückfließen muss und nicht zum Fahrzeugantrieb zur Verfügung steht (Blindleistung). Somit kann nur ein Teil der Leistung einer elektrischen Maschine zum Fahrzeugantrieb genutzt werden. Bei einer bevorzugten Weiterbildung der Erfindung ist daher vorgesehen, dass die Eingangswelle des ersten Differentials eine schaltbare Kupplung aufweist, über die das erste Differential mit einer Verbrennungsmaschine koppelbar ist. Eine derartige Kupplung erlaubt die Trennung des Getriebes von der Verbrennungsmaschine im elektrischen Fahrbetrieb. Dadurch kann die Leistung beider elektrischen Maschinen für das elektrische Fahren genutzt werden. Die Kupplung kann auch beim Anfahren zur Entlastung der elektrischen Maschinen genutzt werden, wodurch höhere Zugkräfte realisierbar sind.at simple DLV structures need When driving electrically the electrical machines are regulated be that the internal combustion engine is stationary. It must have an electrical Machine work as a generator, for which part of the motor Power of the second electric machine must flow back through the transmission and not available for vehicle drive (reactive power). Thus, only a part of the power of an electric machine be used for vehicle propulsion. In a preferred embodiment The invention is therefore intended that the input shaft of the first Differentials has a switchable coupling over the the first differential can be coupled to an internal combustion engine is. Such a coupling allows the separation of the transmission from the internal combustion engine in electric driving mode. Thereby can the performance of both electric machines for the electric Driving be used. The clutch can also when starting for Relief of electrical machines are used, resulting in higher tensile forces feasible are.
Alternativ kann über eine Bremse oder einen Freilauf an der Eingangswelle des ersten Differentials verhindert werden, dass eine vorgeschaltete Verbrennungsmaschine beim elektrischen Fahren entgegen ihrer sonstigen Drehrichtung beschleunigt wird, so dass auch hierdurch beide elektrischen Maschinen zum Antrieb des Fahrzeugs beim elektrischen Fahren genutzt werden können.alternative can over a brake or a freewheel on the input shaft of the first Differentials are prevented from being an upstream combustion engine is accelerated in electric driving against its other direction of rotation, so that also thereby both electric machines to drive of the vehicle can be used in electric driving.
Die verbrennungsmotorseitige Kupplung ermöglicht auch einen Impulsstart des Verbrennungsmotors aus dem elektrischen Fahren, wobei durch gezielte Drehzahlerhöhung der getriebeseitigen Welle und schnelles Schließen der Kupplung der Verbrennungsmotor in kurzer Zeit auf die zum Starten nötige Drehzahl hochbeschleunigt werden kann.The Combustion-engine-side clutch also enables a pulse start of the internal combustion engine from the electric driving, whereby by purposeful Speed increase the transmission-side shaft and fast closing of the clutch of the internal combustion engine Accelerated in a short time to the necessary speed for starting can be.
Günstigerweise sind die schaltbare Kupplung der Eingangswelle und die schaltbare Kupplung der Koppelwelle zu einer Doppelkupplungsstruktur kombiniert.conveniently, are the switchable coupling of the input shaft and the switchable Coupling of the coupling shaft combined to form a dual clutch structure.
Unabhängig von der zugrunde liegenden Getriebestruktur ELVeD oder DLV kann ein bzw. das Differential als ein Planetengetriebe ausgebildet sein. Alternativ bzw. zusätzlich kann ein bzw. das Differential als eine nicht am Gehäuse abgestützte Elektromaschine ausgebildet sein.Independent of the underlying transmission structure ELVeD or DLV can or the differential may be formed as a planetary gear. alternative or additionally can one or the differential as a not supported on the housing electric machine be educated.
Im Fall mehrerer Differentiale können wenigstens zwei Differentiale gemeinsam als ein reduziertes Koppelgetriebe ausgebildet sein.in the Case of multiple differentials can at least two differentials together as a reduced linkage be educated.
Günstigerweise ist ein bzw. der Knoten als eine Welle-Nabe-Verbindung ausgebildet. Alternativ bzw. zusätzlich kann wenigstens ein bzw. der Knoten als eine Zahnradstufe ausgebildet sein.conveniently, For example, one node is formed as a shaft-hub connection. Alternatively or additionally At least one or the node may be formed as a gear stage be.
Weitere Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der speziellen Beschreibung und den Zeichnungen.Other features and advantages of the present invention will become apparent from the specific Description and the drawings.
Es zeigen:It demonstrate:
Die
Die
Ausführungsformen
der
Die
Die
Die
Die
Die
Bei beiden grundsätzlichen Varianten, d. h. brems- und kupplungsbasierter Realisierung mechanischer Gänge sind zusätzliche Übersetzungen zur Drehzahl-/Drehmomentanpassung in der Struktur denkbar, wobei insbesondere eine Übersetzung an der zweiten elektrischen Maschine E2 zur Drehzahlerhöhung bei geringerem Drehmoment eine bevorzugte Ausführungsform ist. Diese Übersetzung kann als einfache Stirnradstufe, als Vorlegewelle, als Planetengetriebe mit einer gehäusefesten Welle oder besonders vorteilhaft als exzentrisch gelagertes Hohlrad mit Außenverzahnung („Gerotor"-Prinzip) ausgeführt sein.at both fundamental Variants, d. H. brake- and clutch-based realization of mechanical Gears are additional translations conceivable for speed / torque adjustment in the structure, wherein in particular a translation at the second electric machine E2 for speed increase lower torque is a preferred embodiment. This translation can be used as a simple spur gear, as a countershaft, as a planetary gear with a housing-fixed Wave or particularly advantageous as eccentrically mounted ring gear with external teeth ("Gerotor" principle) be executed.
Die Schaltelemente können als nass- oder trockenlaufende Lamellenbremse/-Kupplung mit hydraulischer oder elektromechanischer Betätigung ausgeführt sein, wobei auch andere kraft- oder formschlüssige Schaltelemente denkbar sind. Die Aufgabe der Bremse bei den bremsbasierten Varianten kann prinzipiell auch von einem Freilauf übernommen werden.The Switching elements can as a wet or dry running multi-disc brake / clutch with hydraulic or electromechanical actuation, where other power or positive Switching elements are conceivable. The task of the brake in the brake-based Variants can in principle also be taken over by a freewheel become.
So können die elektrischen Maschinen in anderer Form ausgeführt sein als die hier dargestellten.So can the electrical machines are designed in a different form as the one shown here.
Bei
der Realisierung der Differentiale sind alle dem Fachmann bekannten
und noch zu entwickelnden Differentialanordnungen möglich. Insbesondere
können
die Differentiale als Planetengetriebe ausgebildet sein, wobei sowohl
die Anordnung zweier getrennte Differentiale als auch eines reduzierten
Koppelgetriebes denkbar sind. Die
Claims (26)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007044107A DE102007044107A1 (en) | 2007-09-15 | 2007-09-15 | Doubly power-splitting transmission for hybrid vehicle, has differential e.g. planetary gear, exhibiting three differential shafts, where two shafts are coupled with one another by switchable clutch which exhibits adjustable coupling |
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|---|---|---|---|
| DE102007044107A DE102007044107A1 (en) | 2007-09-15 | 2007-09-15 | Doubly power-splitting transmission for hybrid vehicle, has differential e.g. planetary gear, exhibiting three differential shafts, where two shafts are coupled with one another by switchable clutch which exhibits adjustable coupling |
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| DE102007044107A1 true DE102007044107A1 (en) | 2009-03-19 |
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| DE102018222257A1 (en) * | 2018-12-19 | 2020-06-25 | Zf Friedrichshafen Ag | Arrangement for driving a vehicle axle and method for operating the drive arrangement |
| WO2022043022A1 (en) * | 2020-08-26 | 2022-03-03 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle having at least two drive motors and having an automatic gearbox that has one fixed and one power-split transmission ratio |
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| DE112009000679B4 (en) | 2008-03-25 | 2022-04-21 | Toyota Jidosha Kabushiki Kaisha | Vehicle control device and vehicle control method |
| EP2762747A4 (en) * | 2011-09-26 | 2016-06-22 | Nsk Ltd | Electric vehicle drive unit |
| WO2016096313A1 (en) * | 2014-12-19 | 2016-06-23 | Zf Friedrichshafen Ag | Gearing for a motor vehicle, and a drive train with same |
| CN107110304A (en) * | 2014-12-19 | 2017-08-29 | 腓特烈斯港齿轮工厂股份公司 | Speed changer for motor vehicle and the power assembly system with the speed changer |
| US10195932B2 (en) | 2014-12-19 | 2019-02-05 | Zf Friedrichshafen Ag | Gearing for a motor vehicle, and a drive train with same |
| CN107110304B (en) * | 2014-12-19 | 2019-04-23 | 腓特烈斯港齿轮工厂股份公司 | Speed changer for motor vehicle and the power assembly system with the speed changer |
| WO2019063199A1 (en) * | 2017-09-26 | 2019-04-04 | Bayerische Motoren Werke Aktiengesellschaft | Automatic transmission for a motor vehicle and method for shifting an automatic transmission |
| US11268597B2 (en) | 2017-09-26 | 2022-03-08 | Bayerische Motoren Werke Aktiengesellschaft | Automatic transmission for a motor vehicle and method for shifting an automatic transmission |
| DE102018222257A1 (en) * | 2018-12-19 | 2020-06-25 | Zf Friedrichshafen Ag | Arrangement for driving a vehicle axle and method for operating the drive arrangement |
| WO2022043022A1 (en) * | 2020-08-26 | 2022-03-03 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle having at least two drive motors and having an automatic gearbox that has one fixed and one power-split transmission ratio |
| US11932234B2 (en) | 2020-08-26 | 2024-03-19 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle having at least two drive motors and having an automatic gearbox that has one fixed and one power-split transmission ratio |
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