DE102015226215A1 - Method for operating a drive train when leaving a sailing mode - Google Patents
Method for operating a drive train when leaving a sailing mode Download PDFInfo
- Publication number
- DE102015226215A1 DE102015226215A1 DE102015226215.4A DE102015226215A DE102015226215A1 DE 102015226215 A1 DE102015226215 A1 DE 102015226215A1 DE 102015226215 A DE102015226215 A DE 102015226215A DE 102015226215 A1 DE102015226215 A1 DE 102015226215A1
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- transmission
- elements
- combustion engine
- input shaft
- internal combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/043—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer
- F02N15/046—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer of the planetary type
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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)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
- Structure Of Transmissions (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Verfahren zum Betreiben eines Antriebsstrangs eines Kraftfahrzeugs mit Hybridantrieb beim Verlassen eines Segelmodus, wobei der Antriebsstrang einen Verbrennungsmotor und ein Getriebe (1) mit einer elektrischen Maschine (2) und einem Planetengetriebe (PG2) zwischen der elektrischen Maschine (2) und einer ersten Getriebeeingangswelle (4) als Planetenstufe aufweist und das Planetengetriebe (PG2) die Elemente Hohlrad (HR2), Sonnenrad (SR2) und Steg (ST2) aufweist und das Getriebe (2) eine zweite Getriebeeingangswelle (5) aufweist, welche mit dem Verbrennungsmotor verbunden werden kann oder ist, wobei eine Steuereinrichtung abhängig von definierten Betriebsbedingungen während des Betriebs im Segelmodus, in welchem rein elektrisch, mit ausgeschaltetem Verbrennungsmotor, gefahren wird, den Segelmodus beendet, wobei zur Beendigung des Segelmodus der Verbrennungsmotor wieder gestartet wird, indem ein erstes Element der Elemente der Planetenstufe (PG2) mit der zweiten Getriebeeingangswelle (5) verbunden wird und die elektrische Maschine (2) abgebremst wird, wodurch die zweite Getriebeeingangswelle (5) angetrieben wird und der Verbrennungsmotor angeschleppt wird.A method for operating a powertrain of a motor vehicle with hybrid drive when leaving a sailing mode, wherein the drive train comprises an internal combustion engine and a transmission (1) with an electric machine (2) and a planetary gear (PG2) between the electric machine (2) and a first transmission input shaft ( 4) as a planetary stage and the planetary gear (PG2) the elements ring gear (HR2), sun gear (SR2) and web (ST2) and the transmission (2) has a second transmission input shaft (5), which can be connected to the internal combustion engine or is, wherein a control device depending on defined operating conditions during operation in sailing mode, in which purely electric, with the internal combustion engine is driven, terminated the sailing mode, to terminate the sailing mode of the engine is restarted by a first element of the elements of the planetary stage (PG2) with the second transmission input shaft (5 ) is connected and the electric machine (2) is braked, whereby the second transmission input shaft (5) is driven and the internal combustion engine is towed.
Description
Die Erfindung betrifft ein Verfahren zum Betreiben eines Antriebsstrangs eines Kraftfahrzeugs mit Hybridantrieb beim Verlassen eines Segelmodus und eine entsprechende Steuerungseinrichtung. The invention relates to a method for operating a drive train of a motor vehicle with hybrid drive when leaving a sailing mode and a corresponding control device.
Fahrzeuge mit Hybridantrieben sind aus dem Stand der Technik bekannt. Hybridantriebe besitzen dabei zwei oder mehr verschiedene Antriebsquellen, wobei sich weitgehend Antriebsstränge mit einem Verbrennungsmotor und einem oder mehreren Elektromotoren als Parallelhybrid oder als Mischhybrid durchgesetzt haben. Diese Varianten besitzen eine im Kraftfluss im Wesentlichen parallele Anordnung des Verbrennungsmotors und des Elektroantriebs und damit ist sowohl eine Überlagerung der Antriebsmomente als auch eine Ansteuerung mit rein verbrennungsmotorischem Antrieb oder rein elektromotorischem Antrieb möglich. Vehicles with hybrid drives are known from the prior art. Hybrid drives have two or more different drive sources, with drive trains with an internal combustion engine and one or more electric motors have largely prevailed as a parallel hybrid or mixed hybrid. These variants have a substantially parallel in the power flow arrangement of the engine and the electric drive and thus both a superposition of drive torque and a drive with purely internal combustion engine drive or purely electric motor drive possible.
Bei leichten Gefällfahrten benötigt ein Kraftfahrzeug, insbesondere ein LKW im Vergleich zu seiner Tonnage relativ wenig Leistung. In diesen Betriebspunkten ist der Wirkungsgrad des Antriebsstrangs schlecht, wodurch im Vergleich zur notwendigen Leistung, viel Kraftstoff verbraucht wird. In Verbindung mit einem Hybridantrieb kann der Wirkungsgrad des Antriebsstranges in diesen Betriebspunkten verbessert werden. Der Vortrieb in Fahrsituationen mit niedrigem Teillastbetrieb kann dann rein über die elektrische Maschine erfolgen und der Verbrennungsmotor kann abgeschaltet werden. Diese Phase wird auch Segelmodus genannt. Bei Verlassen des Segelmodus muss der Verbrennungsmotor wieder gestartet werden. For easy downhill driving requires a motor vehicle, especially a truck compared to its tonnage relatively little power. At these operating points, powertrain efficiency is poor, which consumes a lot of fuel compared to the power required. In conjunction with a hybrid drive, the efficiency of the drive train can be improved at these operating points. The propulsion in driving situations with low partial load operation can then be carried out purely via the electric machine and the internal combustion engine can be switched off. This phase is also called sailing mode. When leaving the sail mode, the engine must be restarted.
Aus dem Dokument
Ausgehend vom Stand der Technik stellt sich der Fachmann die Aufgabe ein Verfahren sowie eine zugehörige Steuerungseinrichtung für ein vorliegendes automatisiertes Schaltgetriebe für Hybridanwendungen zu schaffen, mit welchem der Verbrennungsmotor am Ende eines Segelmodus ohne konventionellen Anlasser gestartet werden kann. Starting from the prior art, the skilled artisan task of creating a method and an associated control device for a present automated manual transmission for hybrid applications, with which the engine can be started at the end of a sailing mode without conventional starter.
Die Aufgabe wird gelöst durch die Merkmale der Patentansprüche 1 und 6. Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen, der Beschreibung sowie aus der Figur. The object is solved by the features of
Ein Getriebe bezeichnet hier insbesondere ein mehrgängiges Schaltgetriebe, bei dem eine Vielzahl von Gängen, also feste Übersetzungsverhältnisse zwischen zwei Wellen des Getriebes, durch Schaltelemente bevorzugt automatisiert schaltbar sind. Bei den Schaltelementen handelt es sich beispielsweise um Kupplungen oder Bremsen. Derartige Getriebe finden vor allem in Kraftfahrzeugen, insbesondere auch bei Nutzfahrzeugen, Anwendung, um die Drehzahl- und Drehmomentabgabecharakteristik der Antriebseinheit den Fahrwiderständen des Fahrzeugs in geeigneter Weise anzupassen. A transmission referred to here in particular a multi-speed manual transmission, in which a plurality of gears, so fixed ratios between two shafts of the transmission, are preferably automatically switched by switching elements. The switching elements are, for example, clutches or brakes. Such transmissions are used primarily in motor vehicles, in particular also in commercial vehicles, to adapt the rotational speed and torque output characteristics of the drive unit to the driving resistances of the vehicle in a suitable manner.
In der vorliegenden Anwendung weist das Getriebe eine elektrische Maschine und ein Planetengetriebe zwischen der elektrischen Maschine und einer ersten Getriebeeingangswelle als Planetenstufe auf und das Planetengetriebe weist die drei Elemente Hohlrad, Sonnenrad und Steg auf. Eine zweite Getriebeeingangswelle kann mit einem Verbrennungsmotor verbunden werden oder sein. Eine Steuereinrichtung startet und beendet abhängig von definierten Betriebsbedingungen einen Segelmodus, in welchem zur Verbesserung der Betriebspunkte rein elektrisch, mit ausgeschaltetem Verbrennungsmotor, gefahren wird. Zur Beendigung des Segelmodus wird der Verbrennungsmotor wieder gestartet, um erneut als Antrieb eingesetzt zu werden. Dies geschieht indem ein erstes Element der Elemente der Planetenstufe mit der zweiten Getriebeeingangswelle verbunden wird und die elektrische Maschine abgebremst wird, wodurch die zweite Getriebeeingangswelle angetrieben und der Verbrennungsmotor angeschleppt wird. Dabei entsteht ein geringfügiges Bremsmoment an der Ausgangswelle des Getriebes. In the present application, the transmission has an electric machine and a planetary gear between the electric machine and a first transmission input shaft as a planetary stage and the planetary gear has the three elements ring gear, sun gear and bridge on. A second transmission input shaft may or may not be connected to an internal combustion engine. A control device starts and terminates depending on defined operating conditions, a sailing mode in which to improve the operating points purely electrically driven with the internal combustion engine off. To end the sailing mode of the engine is restarted to be used again as a drive. This is done by a first element of the elements of the planetary stage is connected to the second transmission input shaft and the electric machine is braked, whereby the second transmission input shaft is driven and the internal combustion engine is towed. This creates a slight braking torque on the output shaft of the transmission.
Zur Synchronisierung des ersten Elements der Elemente der Planetenstufe mit dem Verbrennungsmotor bzw. der verbundenen zweiten Getriebeeingangswelle wird das erste Element der Elemente der Planetenstufe mit Hilfe einer Drehzahlregelung der elektrischen Maschine abgebremst. Da der Verbrennungsmotor aus ist und dessen Drehzahl damit Null ist, muss das erste Element der Elemente der Planetenstufe oder eine damit verbundene Welle mit Hilfe der Drehzahlregelung der elektrischen Maschine ebenfalls auf Null oder nahe Null gebracht werden, um das erstes Element der Elemente der Planetenstufe mit der zweiten Getriebeeingangswelle zu synchronisieren, damit sie über eine Schalteinrichtung verbunden werden können. To synchronize the first element of the elements of the planetary stage with the internal combustion engine or the connected second transmission input shaft, the first element of the elements of the planetary stage is braked by means of a speed control of the electric machine. Since the engine is off and its speed is thus zero, the first element of the elements of the planetary stage or an associated shaft using the speed control of the electric machine must also be brought to zero or near zero to the first element of the elements of the planetary stage with to synchronize the second transmission input shaft, so that they can be connected via a switching device.
Zur Verbindung des ersten Elements der Elemente der Planetenstufe mit der zweiten Getriebeeingangswelle wird ein Schaltelement in eine erste Schaltstellung gebracht. Das Schaltelement kann als einfaches oder doppelwirkendes Schaltelement ausgeführt sein. Ist die erste Schaltstellung eingelegt, dann dreht die elektrische Maschine im ersten Moment mit dem Drehzahlfaktor „Betrag Standübersetzung + 1“ bezüglich der ersten Getriebeeingangswelle, da das erste Element der Elemente der Planetenstufe oder eine damit verbundene Welle sowie die zweite Getriebeeingangswelle stillsteht. Die erste Getriebeeingangswelle dreht mit der Übersetzung eines geschalteten Vorwärtsganges bezüglich der Ausgangswelle. Wird nun die elektrische Maschine abgebremst, so beginnen das erste Element der Elemente der Planetenstufe oder eine damit verbundene Welle und somit auch die zweite Getriebeeingangswelle zu drehen. Die elektrische Maschine benötigt dazu das um den Faktor der Standübersetzung der Planetenstufe verringerte Verbrennungsmotor-Startmoment. To connect the first element of the elements of the planetary stage with the second transmission input shaft, a switching element in a first Switch position brought. The switching element can be designed as a simple or double-acting switching element. If the first shift position is engaged, then the electric machine rotates at the first moment with the speed factor "amount stand ratio + 1" with respect to the first transmission input shaft, since the first element of the elements of the planetary stage or a shaft connected thereto and the second transmission input shaft is stationary. The first transmission input shaft rotates with the ratio of a forward gear shift with respect to the output shaft. If the electric machine is then decelerated, the first element of the elements of the planetary stage or a shaft connected thereto and thus also the second transmission input shaft start to rotate. To do this, the electric machine requires the engine starting torque reduced by the factor of the stationary gear ratio of the planetary stage.
Ein resultierendes Drehmoment wird an einem zweiten Element der Elemente der Planetenstufe oder an der damit verbundenen ersten Getriebeeingangswelle an der trägen Masse des Kraftfahrzeugs, des Gesamtfahrzeugs, abgestützt, da das zweite Element der Elemente der Planetenstufe über die erste Getriebeeingangswelle mit der Ausgangswelle verbunden ist. Das Reaktionsmoment am zweiten Element der Elemente der Planetenstufe führt daher zu einem geringfügigen Abbremsen des Fahrzeugs, was jedoch für den Fahrer unmerklich ist. Der Verbrennungsmotor wird nun angeschleppt und kann gestartet werden. A resulting torque is supported on a second element of the elements of the planetary stage or on the associated first transmission input shaft on the inertial mass of the motor vehicle, the entire vehicle, since the second element of the elements of the planetary stage is connected via the first transmission input shaft to the output shaft. The reaction torque on the second element of the elements of the planetary stage therefore leads to a slight deceleration of the vehicle, which is imperceptible to the driver. The combustion engine is now towed and can be started.
Anschließend wird die Drehzahl des Verbrennungsmotors durch geeignete Änderung der Drehmomente von Verbrennungsmotor und elektrischer Maschine so angepasst, dass ein weiteres, für den Anschlussgang einzulegendes Schaltelement im Getriebe synchron wird. Subsequently, the rotational speed of the internal combustion engine is adapted by suitable change of the torques of the internal combustion engine and the electrical machine such that a further switching element to be engaged for the connection is synchronized in the transmission.
Eine entsprechende Steuerungseinrichtung, insbesondere Getriebesteuerungseinrichtung, zum Betreiben eines Antriebsstrangs eines Kraftfahrzeugs mit Hybridgetriebe beim Verlassen eines Segelmodus, umfasst die Mittel zur Durchführung des Verfahrens. A corresponding control device, in particular transmission control device, for operating a drive train of a motor vehicle with hybrid transmission when leaving a sailing mode, comprises the means for carrying out the method.
Nachfolgend wird die vorliegende Erfindung anhand von einem Ausführungsbeispiel weiter erläutert: Hereinafter, the present invention will be further explained with reference to an embodiment:
Das zweite Planetengetriebe PG2 wird als Planetenstufe zwischen einer elektrischen Maschine
Durch die Anordnung der elektrischen Maschine
Durch die zwei Teilgetriebe können Verbrennungsmotor und elektrische Maschine
Mit der Ausführungsform der
Die Einleitung der Segelphase kann dabei so vonstattengehen, dass das Hohlrad der Planetenstufe gehäusefest arretiert wird, indem das sechste Schaltelement S6 in seine zweite Schaltstellung J gebracht wird. Der Verbrennungsmotor kann anschließend abgekoppelt werden, indem das zweite und das dritte Schaltelement S2und S3 in Neutralstellung gebracht werden. Anschließend kann die elektrische Maschine
Soll nun der Segelmodus mit rein elektrischem Fahren beendet werden, da zum Beispiel die Leistungsanforderungen steigen oder sich der Energiespeicher der elektrischen Maschine
Der Start des Verbrennungsmotors erfolgt mit geringfügigem Bremsmoment an der Ausgangswelle
Wird nun die elektrische Maschine
Der Verbrennungsmotor wird damit angeschleppt und kann gestartet werden. Anschließend wird die Drehzahl des Verbrennungsmotors durch geeignete Änderung der Drehmomente des Verbrennungsmotors und der elektrischen Maschine
Mit der Ausführungsform der
Die
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1 1
- Getriebe transmission
- 2 2
- elektrische Maschine electric machine
- 3 3
- Ausgangswelle output shaft
- 4 4
- erste Getriebeeingangswelle first transmission input shaft
- 5 5
- zweite Getriebeeingangswelle second transmission input shaft
- 6 6
- erstes Losrad des Hauptgetriebes first idler gear of the main gearbox
- 7 7
- zweites Losrad des Hauptgetriebes second idler gear of the main gearbox
- 8 8th
- drittes Losrad des Hauptgetriebes third idler gear of the main gearbox
- 9 9
- viertes Losrad des Hauptgetriebes fourth idler gear of the main gearbox
- 10 10
- Hauptwelle main shaft
- 11 11
- fünftes Losrad des Hauptgetriebes fifth idler gear of the main gearbox
- 12 12
- erstes Festrad der Vorgelegewelle first fixed gear of the countershaft
- 13 13
- zweites Festrad der Vorgelegewelle second fixed gear of the countershaft
- 14 14
- drittes Festrad der Vorgelegewelle third fixed gear of the countershaft
- 15 15
- viertes Festrad der Vorgelegewelle fourth fixed gear of the countershaft
- 16 16
- fünftes Festrad der Vorgelegewelle fifth fixed gear of the countershaft
- 17 17
- gehäusefestes Bauteil housing-fixed component
- 18 18
- Stator der elektrischen Maschine Stator of the electric machine
- 19 19
- Rotor der elektrischen Maschine Rotor of the electric machine
- HG HG
- Hauptgetriebe main gearbox
- PG1 PG1
- erstes Planetengetriebe, Bereichsgruppe first planetary gear, range group
- PG2 PG2
- zweites Planetengetriebe, Planetenstufe second planetary gear, planetary stage
- HR1, HR2HR1, HR2
- Holrad Holrad
- ST1, ST2ST1, ST2
- Steg web
- SR1, SR2SR1, SR2
- Sonnenrad sun
- PR1, PR2PR1, PR2
- Planetenrad planet
- S1 S1
- erstes Schaltelement first switching element
- S2 S2
- zweites Schaltelement second switching element
- S3 S3
- drittes Schaltelement third switching element
- S4 S4
- viertes Schaltelement fourth switching element
- S5 S5
- fünftes Schaltelement fifth switching element
- S6 S6
- sechstes Schaltelement sixth switching element
- S7 S7
- siebtes Schaltelement seventh switching element
- A A
- erste Schaltstellung des ersten Schaltelements S1 first switching position of the first switching element S1
- B B
- zweite Schaltstellung des ersten Schaltelements S1 second switching position of the first switching element S1
- C C
- erste Schaltstellung des zweiten Schaltelements S2, Teilgetriebekopplung first switching position of the second switching element S2, partial transmission coupling
- D D
- zweite Schaltstellung des zweiten Schaltelements S2 second switching position of the second switching element S2
- E e
- erste Schaltstellung des dritten Schaltelements S3 first switching position of the third switching element S3
- F F
- zweite Schaltstellung des dritten Schaltelements S3, Direktgang second switching position of the third switching element S3, direct gear
- G G
- erste Schaltstellung des vierten Schaltelements S4 first switching position of the fourth switching element S4
- H H
- zweite Schaltstellung des vierten Schaltelements S4, Zugkraftunterstützung der Bereichsgruppesecond shift position of the fourth shift element S4, traction support of the range group
- I I
- erste Schaltstellung des fünften Schaltelements S5, EDA-Modus first switching position of the fifth switching element S5, EDA mode
- J J
- zweite Schaltstellung des fünften Schaltelements S5, ISG-Modus second switching position of the fifth switching element S5, ISG mode
- L L
- erste Schaltstellung des sechsten Schaltelements S6, langsamer Bereich first switching position of the sixth switching element S6, slow range
- S S
- zweite Schaltstellung des sechsten Schaltelements S6, schneller Bereich second switching position of the sixth switching element S6, fast range
- R1 R1
- erste Radebene first wheel plane
- R2 R2
- zweite Radebene second wheel plane
- R3 R3
- dritte Radebene third wheel plane
- R4 R4
- vierte Radebene fourth wheel plane
- R5 R5
- fünfte Radebene, Abtriebskonstante fifth wheel plane, output constant
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- WO 2004/094174 A1 [0004] WO 2004/094174 A1 [0004]
Claims (7)
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DE102015226215.4A DE102015226215A1 (en) | 2015-12-21 | 2015-12-21 | Method for operating a drive train when leaving a sailing mode |
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DE102015226215.4A DE102015226215A1 (en) | 2015-12-21 | 2015-12-21 | Method for operating a drive train when leaving a sailing mode |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019119960A1 (en) * | 2017-12-20 | 2019-06-27 | 广州汽车集团股份有限公司 | Novel hybrid power coupling mechanism and motor vehicle |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004094174A1 (en) | 2003-04-24 | 2004-11-04 | Harald Wilkens | Control unit for improved utilization of the moment of inertia during driving (ntf) |
DE102011089708A1 (en) * | 2011-12-23 | 2013-06-27 | Zf Friedrichshafen Ag | Hybrid drive for motor car, has planetary gear mechanism rotatably connected to input shaft connected to input element, and torque-proof output element connected with idle gears of spur-gear stage |
-
2015
- 2015-12-21 DE DE102015226215.4A patent/DE102015226215A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004094174A1 (en) | 2003-04-24 | 2004-11-04 | Harald Wilkens | Control unit for improved utilization of the moment of inertia during driving (ntf) |
DE102011089708A1 (en) * | 2011-12-23 | 2013-06-27 | Zf Friedrichshafen Ag | Hybrid drive for motor car, has planetary gear mechanism rotatably connected to input shaft connected to input element, and torque-proof output element connected with idle gears of spur-gear stage |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019119960A1 (en) * | 2017-12-20 | 2019-06-27 | 广州汽车集团股份有限公司 | Novel hybrid power coupling mechanism and motor vehicle |
US11267332B2 (en) | 2017-12-20 | 2022-03-08 | Guangzhou Automobile Group Co., Ltd. | Hybrid coupling mechanism and motor vehicle |
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