DE102019131574A1 - Gear unit with two planetary gear sets fixed to one another via ring gear and planetary gear carrier, as well as a motor vehicle with such a gear unit - Google Patents
Gear unit with two planetary gear sets fixed to one another via ring gear and planetary gear carrier, as well as a motor vehicle with such a gear unit Download PDFInfo
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- DE102019131574A1 DE102019131574A1 DE102019131574.3A DE102019131574A DE102019131574A1 DE 102019131574 A1 DE102019131574 A1 DE 102019131574A1 DE 102019131574 A DE102019131574 A DE 102019131574A DE 102019131574 A1 DE102019131574 A1 DE 102019131574A1
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- planetary gear
- gear
- combustion engine
- internal combustion
- gear set
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Classifications
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- 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
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- 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
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- B60K6/365—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 transmission gearings with the gears having orbital motion
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- 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
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- 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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- 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
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- 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
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- B60K6/54—Transmission for changing ratio
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- 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
- B60K2006/381—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 characterized by driveline brakes
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- 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
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- B60K6/54—Transmission for changing ratio
- B60K2006/541—Transmission for changing ratio without reverse ratio using instead electric reversing
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Structure Of Transmissions (AREA)
Abstract
Die Erfindung betrifft eine Getriebeeinheit (1) für ein hybrides Kraftfahrzeug (2), um Drehmoment zumindest zwischen einem Verbrennungsmotor (3), einer elektrischen Maschine (4) und einem Getriebeausgang (5) zu verbringen, umfassend ein im Drehmomentfluss liegendes Planetengetriebe (6) mit einem ersten und einem zweiten Planetenradsatz (7, 8), wobei die Planetenradsätze (7, 8) jeweils einen zugehörigen Planetenradträger (9, 10), ein Sonnenrad (11, 12) und ein Hohlrad (13, 14) aufweisen, wobei die auf dem Planetenradträger (9) des ersten Planetenradsatzes (7) gelagerten und zum Umlaufen vorgesehenen Planetenräder (15) mit dem Hohlrad (13) des ersten Planetenradsatzes (7) kämmen, welches im direkten Drehmomentfluss über den Planetenradträger (10) des zweiten Planetenradsatzes (8) zum Getriebeausgang (5) liegt, wobei das Hohlrad (13) des ersten Planetenradsatzes (7) dauerhaft mit dem Planetenradträger (10) des zweiten Planetenradsatzes (8) wirkverbunden ist. Zudem betrifft die Erfindung ein Kraftfahrzeug mit einem Verbrennungsmotor (3) und einer elektrischen Maschine (4), die in einer Betriebsart im Drehmomentfluss vor einer Getriebeeingangswelle angeordnet sind, wobei zwischen dem Verbrennungsmotor (3) und der elektrischen Maschine (4) und der Getriebeeingangswelle (22) andererseits eine erfindungsgemäße Getriebeeinheit (1) eingesetzt ist.The invention relates to a transmission unit (1) for a hybrid motor vehicle (2) in order to transmit torque at least between an internal combustion engine (3), an electrical machine (4) and a transmission output (5), comprising a planetary gear (6) in the torque flow. with a first and a second planetary gear set (7, 8), the planetary gear sets (7, 8) each having an associated planetary gear carrier (9, 10), a sun gear (11, 12) and a ring gear (13, 14), the Planetary gears (15) mounted on the planetary gear carrier (9) of the first planetary gear set (7) and provided for revolving mesh with the ring gear (13) of the first planetary gear set (7), which in the direct torque flow via the planetary gear carrier (10) of the second planetary gear set (8 ) to the transmission output (5), the ring gear (13) of the first planetary gear set (7) being permanently operatively connected to the planetary gear carrier (10) of the second planetary gear set (8). In addition, the invention relates to a motor vehicle with an internal combustion engine (3) and an electric machine (4), which are arranged in an operating mode in the torque flow in front of a transmission input shaft, with between the internal combustion engine (3) and the electric machine (4) and the transmission input shaft ( 22), on the other hand, a gear unit (1) according to the invention is used.
Description
Die Erfindung betrifft eine Getriebeeinheit für ein hybrides Kraftfahrzeug, um Drehmoment zumindest zwischen einem Verbrennungsmotor, einer elektrischen Maschine und einem Getriebeausgang zu verbringen, umfassend ein im Drehmomentfluss liegendes Planetengetriebe mit einem ersten und einem zweiten Planetenradsatz, wobei die Planetenradsätze jeweils einen zugehörigen Planetenradträger, ein Sonnenrad und ein Hohlrad aufweisen, wobei die auf dem Planetenradträger des ersten Planetenradsatzes gelagerten und zum Umlaufen vorgesehenen Planetenräder mit dem Hohlrad des ersten Planetenradsatzes kämmen, welches im direkten Drehmomentfluss über den Planetenradträger des zweiten Planetenradsatzes zum Getriebeausgang liegt.The invention relates to a gear unit for a hybrid motor vehicle in order to pass torque at least between an internal combustion engine, an electrical machine and a gear output, comprising a planetary gear located in the torque flow with a first and a second planetary gear set, the planetary gear sets each having an associated planetary gear carrier, a sun gear and a ring gear, the planet gears mounted on the planet carrier of the first planetary gear set and intended to rotate mesh with the ring gear of the first planetary gear set, which is in the direct torque flow via the planet gear carrier of the second planetary gear set to the transmission output.
Grundsätzlich gibt es bereits Getriebeeinheiten, die elektrische Betriebsarten bei niedrigen Fahrzeuggeschwindigkeiten (EV-Modi) und Verbrennungsarten (ICE-Modi) bei hohen Fahrzeuggeschwindigkeiten koppeln. Auch erfreuen sich Dedicated-Hybrid-Transmissions (DHT) zunehmender Beliebtheit.In principle, there are already transmission units that couple electrical operating modes at low vehicle speeds (EV modes) and types of combustion (ICE modes) at high vehicle speeds. Dedicated hybrid transmissions (DHT) are also enjoying increasing popularity.
Prinzipiell sind zwei verschiedene Getriebearchitekturen aus dem Stand der Technik bekannt: Zum Beispiel sind einerseits P2-Parallelhybride bekannt, die mit einer elektrischen Maschine arbeiten, welche sich zwischen dem Verbrennungsmotor und dem Getriebe befindet, wobei eine Trennkupplung dazu dient, den Verbrennungsmotor vom Antriebsstrang zu trennen. Der Betrieb kann in diesem Fall im reinen Elektromodus erfolgen, wobei die elektrische Maschine das Drehmoment an das Getriebe und nicht an den Verbrennungsmotor abgibt. Der Vorteil bei dieser Hybridvariante ist, dass es möglich ist, ein bestehendes Getriebe mit einem Elektromotor und einer Trennkupplung zu verwenden, um den Verbrennungsmotor vom Antriebsstrang zu trennen.In principle, two different transmission architectures are known from the prior art: For example, P2 parallel hybrids are known that work with an electrical machine located between the internal combustion engine and the transmission, with a separating clutch used to separate the internal combustion engine from the drive train . In this case, operation can take place in pure electric mode, with the electric machine delivering the torque to the transmission and not to the internal combustion engine. The advantage of this hybrid variant is that it is possible to use an existing transmission with an electric motor and a separating clutch to separate the internal combustion engine from the drive train.
Andererseits sind seriell, seriell-parallel oder leistungsverzweigte Hybride aus dem Stand der Technik bekannt, bei denen ein vom Verbrennungsmotor angetriebener Generator Strom erzeugt, der zum Antrieb eines Elektromotors verwendet wird, der das Fahrzeug antreibt (Serienbetrieb). Diese Getriebe werden auch Powersplit-Getriebe genannt. In den meisten Anordnungen wird jedoch ein Teil der Leistung des Verbrennungsmotors mechanisch auf die Räder übertragen (Serienparallelbetrieb).On the other hand, serial, serial-parallel or power-split hybrids are known from the prior art, in which a generator driven by the internal combustion engine generates electricity that is used to drive an electric motor that drives the vehicle (series operation). These transmissions are also called power split transmissions. In most arrangements, however, part of the power of the internal combustion engine is transferred mechanically to the wheels (series parallel operation).
Aus dem Stand der Technik ist die
Zusammenfassend scheint die Druckschrift
Des Weiteren ist aus dem Stand der Technik die Druckschrift
Zusätzlich ist aus der Druckschrift
Zusätzlich wird auf die Patentveröffentlichung
Nachteilig an dem bekannten Stand der Technik ist, dass es beim Wechsel auf hohe elektrische Maschinenleistungen sehr schwierig ist, diese Maschine in das Getriebe zu integrieren, da die Gesamtgröße des Antriebsstrangs unverhältnismäßig zunimmt. Die Platzbeschränkungen bei der Anordnung der Maschine zwischen Motor und Getriebe erfordern eine Umstellung auf Permanentmagnetmaschinen, die sehr aufwändig in der Herstellung sind. Andererseits zeigen Simulationen, dass mit zunehmender Leistung des elektrischen Systems im Vergleich zum Verbrennungsmotor weniger Übersetzungen erforderlich sind, um die gleiche Fahrzeugleistung zu erreichen. Mit anderen Worten, im Stand der Technik sind Getriebeeinheiten offenbart, die in Bezug auf die Leistung sehr schwerfällig und komplex sind.The disadvantage of the known prior art is that when changing to high electrical machine outputs it is very difficult to integrate this machine into the transmission, since the overall size of the drive train increases disproportionately. The space restrictions when arranging the machine between the motor and the gearbox require a switch to permanent magnet machines, which are very complex to manufacture. On the other hand, simulations show that as the performance of the electrical system increases compared to the combustion engine, fewer gear ratios are required to achieve the same vehicle performance. In other words, the prior art discloses gear units which are very cumbersome and complex in terms of performance.
Die Nachteile liegen u.a. somit in dem Mehrgewicht und in den Kosten, die durch den Einsatz von zwei Elektromaschinen entstehen, während nur eine tatsächlich für den Antrieb des Fahrzeugs verwendet wird. Wenn bspw. im Serienbetrieb ein 60 kW-Elektromotor für den Antrieb des Fahrzeugs benötigt wird, wird auch ein 60 kW-Generator benötigt. Es muss somit die doppelte Antriebsleistung an Bord genommen werden. Die bekannten Konzepte sind außerdem nachteilig, da der Elektromotor jeweils eine zusätzliche Übersetzung benötigt, sodass die beiden elektrischen Gänge an die hohen Drehzahlen anpassbar sind. Diese zusätzliche Übersetzung führen zu einem Effizienzverlust bei der rein elektrischen Fahrt.The disadvantages are, among other things, the additional weight and the costs that arise from the use of two electric machines, while only one is actually used to drive the vehicle. If, for example, a 60 kW electric motor is required to drive the vehicle in series operation, a 60 kW generator is also required. So twice the drive power has to be taken on board. The known concepts are also disadvantageous because the electric motor each requires an additional gear ratio so that the two electric gears can be adapted to the high speeds. This additional gear ratio leads to a loss of efficiency when driving purely on electric power.
Es ist die Aufgabe der vorliegenden Erfindung, eine effizientere, kompaktere und einfacher zu fertigende Getriebeeinheit zur Verfügung zu stellen, die optimierte Übersetzungsverhältnisse aufweist. Auch sollen die aus dem Stand der Technik bekannten Nachteile abgestellt oder wenigstens gemindert werden.It is the object of the present invention to provide a more efficient, more compact and easier to manufacture gear unit which has optimized transmission ratios. The disadvantages known from the prior art are also intended to be eliminated or at least reduced.
Diese Aufgabe wird bei einer gattungsgemäßen Getriebeeinheit, umfassend einen ersten Planetenträger, erfindungsgemäß dadurch gelöst, dass das Hohlrad des ersten Planetenradsatzes dauerhaft mit dem Planetenradträger des zweiten Planetenradsatzes wirkverbunden ist.In a generic transmission unit comprising a first planetary carrier, this object is achieved according to the invention in that the ring gear of the first planetary gear set is permanently operatively connected to the planetary gear carrier of the second planetary gear set.
Bei einer solchen erfindungsgemäßen Ausgestaltung wird die Anzahl an vorhandenen Schalteinrichtungen in vorteilhafter Weise reduziert, wobei dennoch verschiedene Getriebeübersetzungen in einem Antriebszustand des Verbrennungsmotors sowie der elektrischen Maschine eine ausreichende Leistungswandlung ermöglichen. In besonders vorteilhafter Weise wird keine Trennkupplung für den Verbrennungsmotor benötigt (ICE-Trennkupplung), da die erste und die zweite Kupplung, also die Kupplung des ersten Planetenradsatzes und die Kupplung des zweiten Planetenradsatzes, diese Funktion bereits erfüllen. Somit ist insgesamt eine Getriebeeinheit bereitgestellt, die insgesamt effizienter, kompakter und einfacher zu fertigen ist als die aus dem Stand der Technik bekannten Getriebeeinheiten.In such an embodiment according to the invention, the number of switching devices present is advantageously reduced, with different gear ratios nevertheless enabling sufficient power conversion in a drive state of the internal combustion engine and of the electrical machine. In a particularly advantageous manner, no separating clutch is required for the internal combustion engine (ICE separating clutch), since the first and the second clutch, i.e. the clutch of the first planetary gear set and the clutch of the second planetary gear set, already fulfill this function. Overall, a gear unit is thus provided which is overall more efficient, more compact and easier to manufacture than the gear units known from the prior art.
Das neu geschaffene Getriebe hat die Eigenschaften, dass es 2 bis 4 Gänge aufweist, die für den Antrieb des Fahrzeugs in Vorwärtsfahrt durch den Verbrennungsmotor verwendbar sind. Des Weiteren weist es 1 bis 2 Gänge für den Antrieb des Fahrzeugs in Vorwärtsfahrt durch den Elektromotor auf und mindestens einen Rückwärtsgang im Elektromodus. Damit wird dem Trend gerecht, 3 bis 6 Gänge für den Antrieb des Fahrzeugs in Vorwärtsfahrt durch den Verbrennungsmotor und 1 bis 3 Gänge für den Antrieb des Fahrzeugs in Vorwärtsfahrt durch den Elektromotor zu stellen.The newly created transmission has the characteristics that it has 2 to 4 gears, which can be used for driving the vehicle forward by the internal combustion engine. Furthermore, it has 1 to 2 gears for driving the vehicle in forward travel by the electric motor and at least one reverse gear in electric mode. This is in line with the trend to set 3 to 6 gears for driving the vehicle forward by the internal combustion engine and 1 to 3 gears for driving the vehicle in forward driving by the electric motor.
Die Anzahl der mit dem Elektromotor verbundenen Gänge ist auf die Bedürfnisse eines Hybridfahrzeugs abgestimmt, wodurch keine unnötige Ausrüstung zum Erreichen von 6 oder 8 Gängen nötig ist. Die 2 elektrischen Gänge ermöglichen es, den Betrieb der elektrischen Maschine in ihren Drehzahl- und Drehmomentbereichen dort anzupassen, wo sie am effizientesten ist. Dadurch wird auch ein hohes Raddrehmoment für den Fahrzeugstart erreicht, während die Maschinendrehzahlen für höhere Fahrzeuggeschwindigkeiten reduziert werden.The number of gears connected to the electric motor is tailored to the needs of a hybrid vehicle, which means that no unnecessary equipment is required to achieve 6 or 8 gears. The 2 electrical gears make it possible to adapt the operation of the electrical machine in its speed and torque ranges where it is most efficient. As a result, a high wheel torque is also achieved for vehicle start-up, while the engine speeds are reduced for higher vehicle speeds.
Mit anderen Worten wird somit eine Lösung des erfindungsgemäßen Getriebes präsentiert, die
- - nicht mehr als vier Kupplungen umfasst,
- - mindestens zwei elektrische Gänge umfasst, die es ermöglichen, den Elektromotor ohne zusätzliche Übersetzung für einen optimalen Wirkungsgrad zu verwenden,
- - einen Electrically-Variable-Transmission-Modus (EVT-Modus) aufweist, der es ermöglicht, den Verbrennungsmotor für den Fahrzeugstart ohne Startkupplung zu verwenden, und feste Übersetzungen bereitstellt, die zusammen mindestens vier gleichbleibende Übersetzungen für den Verbrennungsmotor darstellen und
- - kohärente Möglichkeiten vereinfachter Versionen durch Entfernen einer oder mehrerer Kupplungen möglich macht, um Varianten mit weniger Funktionen - aber auch kostengünstiger - zu erhalten.
- - includes no more than four couplings,
- - includes at least two electrical gears that allow the electric motor to be used without additional transmission for optimum efficiency,
- - Has an Electrically Variable Transmission Mode (EVT mode), which makes it possible to use the internal combustion engine for starting the vehicle without a starter clutch, and provides fixed translations which together represent at least four constant ratios for the internal combustion engine and
- - Makes coherent possibilities of simplified versions possible by removing one or more couplings in order to obtain variants with fewer functions - but also more cost-effectively.
Die erfindungsgemäße Idee besteht somit darin, ein Dedicated-Hybrid-Transmission (DHT-Konzept) vorzuschlagen, welches mindestens folgende Elemente umfasst:
- - zwei Planetenradsätze,
- - vier Schaltelemente (zwei Bremsen und zwei Kupplungen) und
- - eine Elektromaschine.
- - two planetary gear sets,
- - four switching elements (two brakes and two clutches) and
- - an electric machine.
Mit den vorgestellten Elementen des Dedicated-Hybrid-Transmissions werden folgende Funktionen erfüllt:
- - Ein Electrical-Vehicle-Transmission-Modus (EVT-Modus)
- - vier Vorwärtsgänge im Verbrennerbetrieb (ICE-Vorwärts-Gänge)
- - zwei elektrische Gänge, die vorwärts und rückwärts verwendet werden können.
- - Laden im Stillstand und die
- - Möglichkeit des Boostens und der Rekuperation in den ICE-Gängen.
- - An electrical vehicle transmission mode (EVT mode)
- - four forward gears in combustion mode (ICE forward gears)
- - two electric gears that can be used forwards and backwards.
- - Loading at a standstill and the
- - Possibility of boosting and recuperation in the ICE aisles.
Es wird in vorteilhafter Weise keine ICE-Trennkupplung benötigt, da die erste Kupplung und die zweite Kupplung (
Ein Planetenradsatz wird auch als Teilplanetengetriebe bezeichnet, wobei jedes Teilplanetengetriebe ein Sonnenrad, einen Planetenradträger mit umlaufenden Planetenrädern und ein Hohlrad umfasst.A planetary gear set is also referred to as a partial planetary gear, each partial planetary gear comprising a sun gear, a planetary gear carrier with rotating planetary gears and a ring gear.
Vorteilhafte Ausführungsformen sind in den Unteransprüchen beansprucht und werden nachfolgend näher erläutert.Advantageous embodiments are claimed in the subclaims and are explained in more detail below.
In einer weiteren Ausführungsform ist es von Vorteil, wenn die elektrische Maschine mit dem Hohlrad des zweiten Planetenradsatzes dauerhaft wirkverbunden ist. Durch diese Ausführungsform wird in vorteilhafter Weise ein direkter Drehmomentenübertrag der elektrischen Maschine auf das Hohlrad des zweiten Planetenradsatzes bewirkt, wodurch eine bauraumoptimierte und gewichtsoptimierte Getriebeeinheit bereitgestellt ist. Dadurch, dass keine zwischengeschalteten Zahnradsätze vorhanden sind, wird zusätzlich eine besonders effiziente Kraftübertragung bereitgestellt.In a further embodiment, it is advantageous if the electrical machine is permanently operatively connected to the ring gear of the second planetary gear set. This embodiment advantageously brings about a direct torque transfer from the electrical machine to the ring gear of the second planetary gear set, as a result of which a space-optimized and weight-optimized transmission unit is provided. The fact that there are no interposed gearwheel sets additionally provides a particularly efficient power transmission.
Ferner ist es vorteilhaft, wenn zwischen den Sonnenrädern der jeweiligen Planetenradsätze und dem Verbrennungsmotor eine erste Schaltvorrichtung vorgesehen ist, welche das bereitgestellte Drehmoment im geschalteten Zustand an die jeweiligen Sonnenräder überträgt. In einer besonders vorteilhaften Ausführungsform ist die erste Schaltvorrichtung eine Kupplung, die das durch den Verbrennungsmotor bereitgestellte Drehmoment im geschalteten, d. h. im aktivierten Zustand, direkt an das erste und das zweite Sonnenrad überträgt, sodass eine besonders effiziente Kraftübertragung gegeben ist. Durch die erste Schaltvorrichtung lassen sich somit die Sonnenräder beider Planetenradsätze ansteuern.It is also advantageous if a first switching device is provided between the sun gears of the respective planetary gear sets and the internal combustion engine, which transmits the torque provided to the respective sun gears in the switched state. In a particularly advantageous embodiment, the first shifting device is a clutch that controls the torque provided by the internal combustion engine in the shifted, i. E. H. in the activated state, transmits directly to the first and second sun gear, so that a particularly efficient power transmission is given. The sun gears of both planetary gear sets can thus be controlled by the first switching device.
In einer weiter bevorzugten Ausgestaltungsform ist zwischen einem Gehäuse des Planetengetriebes, dem Verbrennungsmotor und dem Planetenradträger des ersten Planetenradsatzes eine zweite Schalteinrichtung vorgesehen, die im aktivierten Zustand dazu ausgebildet ist, entweder den Verbrennungsmotor mit dem Planetenradträger des ersten Planetenradsatzes oder das Gehäuse mit dem Planetenradträger des ersten Planetenradsatzes oder selektiv den Verbrennungsmotor mit dem Planetenradträger des ersten Planetenradsatzes und das Gehäuse mit dem Planetenradträger des ersten Planetenradsatzes zu verbinden. Die zweite Schalteinrichtung ist grundsätzlich dazu vorgesehen, den ersten Planetenradträger des ersten Planetenradsatzes anzusteuern bzw. bedarfsweise festzulegen oder loszulassen.In a further preferred embodiment, a second switching device is provided between a housing of the planetary gear, the internal combustion engine and the planetary gear carrier of the first planetary gear set, which in the activated state is designed to either switch the internal combustion engine with the planetary gear carrier of the first planetary gear set or the housing with the planetary gear carrier of the first Planetary gear set or selectively to connect the internal combustion engine with the planetary gear carrier of the first planetary gear set and the housing with the planetary gear carrier of the first planetary gear set. The second switching device is basically provided to control the first planetary gear carrier of the first planetary gear set or, if necessary, to fix or release it.
Es hat sich bewährt, wenn die zweite Schalteinrichtung zumindest eine feststellbare Bremse und eine aktivierbare Kupplung umfasst. In einer vorteilhaften Ausführungsform besteht die zweite Schaltvorrichtung aus einer Bremse und einer Kupplung, wobei die Bremse die Drehmomentenübertragung zwischen dem Gehäuse der Getriebeeinheit und dem Planetenradträger bewirkt und dass die Kupplung den Drehmomentübertrag von dem Verbrennungsmotor an den Planetenradträger bewirkt. Es kann somit eine besonders effiziente Drehmomentenübertragung zwischen dem Verbrennungsmotor und dem Planetenradträger bzw. zwischen Gehäuse und Planetenradträger bewirkt sein. Zusätzlich ist durch die Integration der Bremse und der Kupplung in die zweite Schaltvorrichtung eine besonders bauraumoptimierte Schaltvorrichtung bereitgestellt, die insbesondere den Bauraum in axialer Richtung verkürzt.It has proven useful if the second switching device comprises at least one lockable brake and one activatable clutch. In an advantageous embodiment, the second switching device consists of a brake and a clutch, the brake causing the torque transmission between the housing of the gear unit and the planetary gear carrier and the clutch causing the torque to be transferred from the internal combustion engine to the planetary gear carrier. A particularly efficient torque transmission can thus be brought about between the internal combustion engine and the planetary gear carrier or between the housing and the planetary gear carrier. In addition, the integration of the brake and the clutch in the second switching device provides a switching device that is particularly space-optimized and, in particular, shortens the installation space in the axial direction.
In einer weiter bevorzugten Ausgestaltungsform ist zwischen dem Gehäuse und dem Sonnenrad des zweiten Planetenradsatzes eine dritte Schaltvorrichtung ausgebildet ist, die im aktivierten Zustand das jeweilige Sonnenrad des ersten und des zweiten Planetenradsatzes an dem Gehäuse festsetzt. Durch diese dritte Schaltvorrichtung, die vorzugsweise als Bremse ausgebildet ist, wird im geschlossenen Zustand eine besonders effiziente Drehmomentübertragung zwischen den beiden Sonnenrädern des ersten und des zweiten Planetenradsatzes bewirkt.In a further preferred embodiment, a third switching device is formed between the housing and the sun gear of the second planetary gear set, which in the activated state fixes the respective sun gear of the first and second planetary gear sets on the housing. This third switching device, which is preferably designed as a brake, brings about a particularly efficient torque transmission between the two sun gears of the first and second planetary gear sets in the closed state.
In einer weiteren bevorzugten Ausführungsform ist die erste Schaltvorrichtung radial innenliegend von der zweiten Schaltvorrichtung angeordnet, wobei vorzugsweise beide Schaltvorrichtungen zumindest teilweise axial überlappend angeordnet sind. Dadurch, dass die erste Schaltvorrichtung direkt unterhalb der zweiten Schaltvorrichtung angeordnet ist, also diese beiden Schaltvorrichtung in einer axialen Ebene positioniert sind, wird in axialer Richtung ein sehr bauraumoptimiertes Getriebe bereitgestellt. Durch die direkte Anbindung beider Schaltvorrichtungen zueinander, wird ergo ein sehr kompaktes Getriebe geschaffen.In a further preferred embodiment, the first switching device is arranged radially on the inside of the second switching device, wherein preferably both switching devices are arranged at least partially axially overlapping. Because the first shifting device is arranged directly below the second shifting device, that is to say these two shifting devices are positioned in an axial plane, a very space-saving transmission is provided in the axial direction. The direct connection of the two switching devices to one another creates a very compact transmission.
In einer weiter bevorzugten Ausgestaltungsform ist ein mit dem Planetenradträger des zweiten Planetenradsatzes dauerhaft gekoppeltes Drehmomentenausgangsbauteil an dem Gehäuse drehgelagert. Damit ist das Drehmomentenausgangsbauteil in vorteilhafter Weise sowohl radial gestützt als auch axial gehaltert, wobei zur Lagerung des Drehmomentenausgangsbauteils Gleitlager oder Wälzlager verwendet werden können.In a further preferred embodiment, a torque output component permanently coupled to the planetary gear carrier of the second planetary gear set is rotatably mounted on the housing. The torque output component is thus advantageously both radially supported and axially supported, it being possible to use plain bearings or roller bearings to support the torque output component.
In vorteilhafter Weise kann durch diese Ausführungsform ein ausreichend hohes Drehmoment bei einem platzsparenden konstruktiven Aufbau übertragen werden. In einer weiteren Ausgestaltungsform ist das Drehmomenentausgangsbauteil als Stirnrad ausgebildet ist, welches vorzugsweise schräg- oder geradeverzahnt ist, wodurch ein ausreichendes Drehmoment bei entsprechender Laufruhe zum Getriebeausgang übertragen werden kann. Bei der Schrägverzahnung wird eine bessere Laufruhe bzw. eine geringere Geräuschentwicklung bewirkt, da jedes Zahnradpaar mit einem kontinuierlichen Übergang in und aus dem Eingriff läuft und somit die Übertragung des Drehmoments gleichmäßiger verläuft. Bei der Schrägverzahnung ist weiterhin in vorteilhafter Weise bei gleicher Zähnezahl die Zahnfuß- und die Grübchentragfähigkeit größer. Bei geradeverzahnten Stirnrädern sind die Herstellkosten in vorteilhafter Weise geringer.This embodiment advantageously allows a sufficiently high torque to be transmitted with a space-saving structural design. In a further embodiment, the torque output component is designed as a spur gear, which is preferably helical or straight-toothed, as a result of which sufficient torque can be transmitted to the transmission output with correspondingly smooth running. With the helical gearing, smoother running or less noise is produced, since each gear pair runs with a continuous transition into and out of mesh and thus the transmission of the torque proceeds more evenly. In the case of the helical toothing, the tooth root and the dimple load-bearing capacity are advantageously greater with the same number of teeth. In the case of straight-toothed spur gears, the manufacturing costs are advantageously lower.
Des Weiteren betrifft die Erfindung ein Kraftfahrzeug mit einem Verbrennungsmotor und einer elektrischen Maschine, die in einer Betriebsart im Drehmomentfluss vor einer Getriebeeingangswelle angeordnet sind, wobei zwischen dem Verbrennungsmotor und der elektrischen Maschine und der Getriebeeingangswelle andererseits eine erfindungsgemäße Getriebeeinheit eingesetzt ist.Furthermore, the invention relates to a motor vehicle with an internal combustion engine and an electrical machine, which are arranged in one operating mode in the torque flow in front of a transmission input shaft, with a transmission unit according to the invention being used between the internal combustion engine and the electrical machine and the transmission input shaft.
Die Erfindung wird nachfolgend mit Hilfe einer Zeichnung näher erläutert. Es zeigen:
-
1 eine schematische Längsschnittdarstellung / Prinzipskizze einer ersten erfindungsgemäßen, in einem teilweise dargestellten Antriebsstrang eines Kraftfahrzeuges eingesetzten, Getriebeeinheit nach einer ersten Ausführungsform, -
2 ein Diagramm zur Veranschaulichung aller durch dieGetriebeeinheit der 1 schaltbaren Gänge, -
3 eine weitere schematische Längsschnittdarstellung / Prinzipskizze einer erfindungsgemäßen Getriebeeinheit nach einer zweiten Ausführungsform mit drei Gängen für den Verbrennungsmotor und einem Gang für den Elektromotor, -
4 ein weiteres Diagramm zur Veranschaulichung von drei schaltbaren Gängen für den Verbrennungsmotor und einem schaltbaren Gang für den Elektromotor durchdie Getriebeeinheit der 3 , -
5 eine weitere schematische Längsschnittdarstellung / Prinzipskizze einer erfindungsgemäßen Getriebeeinheit nach einer dritten Ausführungsformmit vier Gängen für den Verbrennungsmotor und einem Gang für den Elektromotor, -
6 ein weiteres Diagramm zur Veranschaulichung von vier schaltbaren Gängen für den Verbrennungsmotor und einem schaltbaren Gang für den Elektromotor durchdie Getriebeeinheit der 5 , -
7 eine weitere schematische Längsschnittdarstellung / Prinzipskizze einer erfindungsgemäßen Getriebeeinheit nach einer vierten Ausführungsform mit zwei Gängen für den Verbrennungsmotor und zwei Gängen für den Elektromotor, -
8 ein weiteres Diagramm zur Veranschaulichung von zwei schaltbaren Gängen für den Verbrennungsmotor und zwei schaltbaren Gängen für den Elektromotor durchdie Getriebeeinheit der 7 , -
9 eine weitere schematische Längsschnittdarstellung / Prinzipskizze einer erfindungsgemäßen Getriebeeinheit nach einer fünften Ausführungsform mit einem Gang für den Verbrennungsmotor, zwei Gängen für den Elektromotor und einem EVT-Gang, -
10 ein weiteres Diagramm zur Veranschaulichung von einem schaltbaren Gang für den Verbrennungsmotor und zwei schaltbaren Gängen für den Elektromotor durchdie Getriebeeinheit der 9 , -
11 eine weitere schematische Längsschnittdarstellung / Prinzipskizze einer erfindungsgemäßen Getriebeeinheit nach einer sechsten Ausführungsform mit einem Gang für den Verbrennungsmotor und zwei Gängen für den Elektromotor, -
12 ein weiteres Diagramm zur Veranschaulichung von einem schaltbaren Gang für den Verbrennungsmotor und zwei schaltbaren Gängen für den Elektromotor durchdie Getriebeeinheit der 11 und -
13 eine schematische Darstellung eines Kraftfahrzeuges samt der erfindungsgemäßen Getriebeeinheit, wobei die Getriebeeinheit an der Vorderachse des Kraftfahrzeuges sowie in einer Queranordnung mit dem Verbrennungsmotor eingesetzt ist.
-
1 a schematic longitudinal sectional view / basic sketch of a first transmission unit according to the invention, used in a partially shown drive train of a motor vehicle, according to a first embodiment, -
2 a diagram illustrating all of the through the gear unit of the1 switchable gears, -
3rd a further schematic longitudinal sectional view / basic sketch of a transmission unit according to the invention according to a second embodiment with three gears for the internal combustion engine and one gear for the electric motor, -
4th a further diagram to illustrate three shiftable gears for the internal combustion engine and one shiftable gear for the electric motor through the transmission unit of FIG3rd , -
5 a further schematic longitudinal sectional view / basic sketch of a transmission unit according to the invention according to a third embodiment with four gears for the internal combustion engine and one gear for the electric motor, -
6th a further diagram to illustrate four shiftable gears for the internal combustion engine and one shiftable gear for the electric motor through the transmission unit of FIG5 , -
7th a further schematic longitudinal sectional view / basic sketch of a transmission unit according to the invention according to a fourth embodiment with two gears for the internal combustion engine and two gears for the electric motor, -
8th a further diagram to illustrate two shiftable gears for the internal combustion engine and two shiftable gears for the electric motor by the gear unit of FIG7th , -
9 a further schematic longitudinal sectional view / basic sketch of a transmission unit according to the invention according to a fifth embodiment with one gear for the internal combustion engine, two gears for the electric motor and one EVT gear, -
10 a further diagram to illustrate a shiftable gear for the internal combustion engine and two shiftable gears for the electric motor by the transmission unit of FIG9 , -
11 a further schematic longitudinal sectional view / basic sketch of a transmission unit according to the invention according to a sixth embodiment with one gear for the internal combustion engine and two gears for the electric motor, -
12th a further diagram to illustrate a shiftable gear for the internal combustion engine and two shiftable gears for the electric motor by the transmission unit of FIG11 and -
13th a schematic representation of a motor vehicle including the transmission unit according to the invention, the transmission unit being used on the front axle of the motor vehicle and in a transverse arrangement with the internal combustion engine.
Die Figuren sind lediglich schematischer Natur und dienen nur dem Verständnis der Erfindung. Die gleichen Elemente sind mit denselben Bezugszeichen versehen. Die Merkmale der verschiedenen Ausführungsbeispiele können prinzipiell frei miteinander kombiniert werden.The figures are only of a schematic nature and are only used for understanding the invention. The same elements are provided with the same reference symbols. In principle, the features of the various exemplary embodiments can be freely combined with one another.
In der
Gemäß der Ausbildung als Hybridgetriebe wird die Getriebeeinheit
Der erste Planetenradsatz
Die elektrische Maschine
In
In der
Eine erste Schalteinrichtung
Eine zweite Schalteinrichtung
Des Weiteren ist als dritte Schalteinrichtung die erste Bremse
Auf die gleiche Weise wie die erste Bremse
In Verbindung mit den
Aus dem Diagramm der
Ein X steht also für eine Aktivierung; On/Off bei ICE steht für das Eingeschalten oder Ausgeschalten sein des Verbrennungsmotors, Ratio betrifft das Übersetzungsverhältnis i . In der ersten Spalte ist die Art des Betreieben des Antriebs zusammengefasst, bspw. EM
Die
Die
Die
Die
Die
Die
Die
Die
Die
Durch diese Konfiguration lassen sich die in der
Die
Mit anderen Worten ausgedrückt, ist erfindungsgemäß ein DHT-Konzept (Dedicated Hybrid Transmission (Getriebeeinheit
BezugszeichenlisteList of reference symbols
- 11
- GetriebeeinheitGear unit
- 22
- KraftfahrzeugMotor vehicle
- 33
- VerbrennungsmotorInternal combustion engine
- 44th
- Elektrische MaschineElectric machine
- 55
- GetriebeausgangTransmission output
- 66th
- PlanetengetriebePlanetary gear
- 77th
- Erster PlanetenradsatzFirst planetary gear set
- 88th
- Zweiter PlanetenradsatzSecond planetary gear set
- 99
- Erster PlanetenradträgerFirst planet carrier
- 1010
- Zweiter PlanetenradträgerSecond planet carrier
- 1111
- Erstes SonnenradFirst sun gear
- 1212th
- Zweites SonnenradSecond sun gear
- 1313th
- Erstes HohlradFirst ring gear
- 1414th
- Zweites HohlradSecond ring gear
- 1515th
- PlanetenräderPlanetary gears
- 1616
- Gehäusecasing
- 1717th
- FreilaufkupplungOne-way clutch
- 1818th
- Erste SchaltvorrichtungFirst switching device
- 1919th
- Zweite SchaltvorrichtungSecond switching device
- 2020th
- Dritte SchaltvorrichtungThird switching device
- 2121
- DrehmomentenausgangsbauteilTorque output component
- 2222nd
- GetriebeeingangswelleTransmission input shaft
- 2323
- DrehschwingungsdämpferTorsional vibration damper
- 2424
- zentrale Drehachsecentral axis of rotation
- 2626th
- Erstes AntriebsradFirst drive wheel
- 2727
- Zweites AntriebsradSecond drive wheel
- K1K1
- erste Kupplungfirst clutch
- K2K2
- zweite Kupplungsecond clutch
- B1B1
- erste Bremsefirst brake
- B2B2
- zweite Bremsesecond brake
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDED 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 was 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 PatentliteraturPatent literature cited
- DE 102016221045 A1 [0005, 0006]DE 102016221045 A1 [0005, 0006]
- EP 2146855 B1 [0007]EP 2146855 B1 [0007]
- WO 2016/075336 [0008]WO 2016/075336 [0008]
- DE 102018130498 A1 [0009]DE 102018130498 A1 [0009]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019131574.3A DE102019131574A1 (en) | 2019-11-22 | 2019-11-22 | Gear unit with two planetary gear sets fixed to one another via ring gear and planetary gear carrier, as well as a motor vehicle with such a gear unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019131574.3A DE102019131574A1 (en) | 2019-11-22 | 2019-11-22 | Gear unit with two planetary gear sets fixed to one another via ring gear and planetary gear carrier, as well as a motor vehicle with such a gear unit |
Publications (1)
Publication Number | Publication Date |
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DE102019131574A1 true DE102019131574A1 (en) | 2021-05-27 |
Family
ID=75784069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102019131574.3A Pending DE102019131574A1 (en) | 2019-11-22 | 2019-11-22 | Gear unit with two planetary gear sets fixed to one another via ring gear and planetary gear carrier, as well as a motor vehicle with such a gear unit |
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DE (1) | DE102019131574A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021113442A1 (en) | 2021-05-25 | 2022-12-01 | Schaeffler Technologies AG & Co. KG | hybrid transmission with a compound planetary gear set; as well as motor vehicle |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2146855B1 (en) * | 2007-05-24 | 2012-01-25 | ZF Friedrichshafen AG | Hybrid drive system for a vehicle |
DE102014204009A1 (en) * | 2014-03-05 | 2015-09-10 | Schaeffler Technologies AG & Co. KG | Multi-speed planetary gear system as a component of the drive train of a motor vehicle |
WO2016075336A1 (en) * | 2014-11-14 | 2016-05-19 | Avl List Gmbh | Torque transmission device and method for the operation thereof |
DE102016213741A1 (en) * | 2016-07-27 | 2018-02-01 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102016221045A1 (en) * | 2016-10-26 | 2018-04-26 | Audi Ag | Gear arrangement for a hybrid vehicle |
DE102017218513A1 (en) * | 2017-10-17 | 2019-04-18 | Zf Friedrichshafen Ag | Transmission for a motor vehicle |
-
2019
- 2019-11-22 DE DE102019131574.3A patent/DE102019131574A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2146855B1 (en) * | 2007-05-24 | 2012-01-25 | ZF Friedrichshafen AG | Hybrid drive system for a vehicle |
DE102014204009A1 (en) * | 2014-03-05 | 2015-09-10 | Schaeffler Technologies AG & Co. KG | Multi-speed planetary gear system as a component of the drive train of a motor vehicle |
WO2016075336A1 (en) * | 2014-11-14 | 2016-05-19 | Avl List Gmbh | Torque transmission device and method for the operation thereof |
DE102016213741A1 (en) * | 2016-07-27 | 2018-02-01 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102016221045A1 (en) * | 2016-10-26 | 2018-04-26 | Audi Ag | Gear arrangement for a hybrid vehicle |
DE102017218513A1 (en) * | 2017-10-17 | 2019-04-18 | Zf Friedrichshafen Ag | Transmission for a motor vehicle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102021113442A1 (en) | 2021-05-25 | 2022-12-01 | Schaeffler Technologies AG & Co. KG | hybrid transmission with a compound planetary gear set; as well as motor vehicle |
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