WO2013149885A1 - Drive unit for a motor vehicle - Google Patents

Drive unit for a motor vehicle Download PDF

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Publication number
WO2013149885A1
WO2013149885A1 PCT/EP2013/056400 EP2013056400W WO2013149885A1 WO 2013149885 A1 WO2013149885 A1 WO 2013149885A1 EP 2013056400 W EP2013056400 W EP 2013056400W WO 2013149885 A1 WO2013149885 A1 WO 2013149885A1
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WO
WIPO (PCT)
Prior art keywords
planetary gear
drive unit
electric motor
planetary
gear set
Prior art date
Application number
PCT/EP2013/056400
Other languages
German (de)
French (fr)
Inventor
Dieter Grillenberger
Stefan LICHTENEGGER
Original Assignee
Avl List Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avl List Gmbh filed Critical Avl List Gmbh
Priority to DE112013000789.4T priority Critical patent/DE112013000789A5/en
Publication of WO2013149885A1 publication Critical patent/WO2013149885A1/en

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Classifications

    • 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
    • B60K6/48—Parallel type
    • 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
    • B60K6/48—Parallel type
    • B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
    • 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
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • F16H2003/0931—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts each countershaft having an output gear meshing with a single common gear on the output shaft
    • 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
    • F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
    • 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
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/12—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
    • F16H3/126—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches using an electric drive
    • 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

Definitions

  • the invention relates to a drive unit, preferably for a motor vehicle, according to the preamble of patent claim 1.
  • the dual-clutch transmission includes two clutches and two transmission input shafts, each with a drive shaft assigned to it.
  • the drive shafts are part of two parallel transmissions with different gear ratios.
  • an electric machine is provided, which is effective as an electric motor and / or generator and connectable to the transmission input shafts.
  • the electric machine can be coupled via an additional gear with the first and second transmission input shaft.
  • the additional gear is designed as a planetary gear.
  • No. 7,150,698 B2 deals with a drive system for a motor vehicle, in which an internal combustion engine interacts with a transmission unit.
  • an output shaft of the internal combustion engine influenced by the intermediary of a spur gears having a first input shaft and a second input shaft.
  • Switchable clutches are effective between the first input shaft and the second input shaft and spur gears of the transmission.
  • electric motors are connected, with extension shafts are after the electric motors with manual transmissions in operative connection.
  • the object of the invention is to design a drive unit for a motor vehicle, which comprises an internal combustion engine, a clutch, a transmission system and a planetary gear to be designed so that it is characterized by compact design and good function. It should be feasible with the planetary gear in conjunction with an electric motor and the transmission system several technical tasks of the drive unit.
  • the advantages achieved by the invention are to be seen in the fact that the planetary gear with the first and the second planetary gear, stored - At the common planet carrier, easily with reasonable space requirement is integrated into the drive unit.
  • the first planetary gear set and the second planetary gear set interact in an exemplary manner with the first drive element of the clutch and the second drive element of the planetary gear, which, for example, influences the electric motor.
  • the implementation of the planetary gear is favored by the fact that the first planetary gears of the first planetary gear set lie on the first circumference whose first diameter is smaller than the second diameter of the second circumference, on which the second planet gears of the second planetary gear set are arranged.
  • first planetary gears mesh on the one hand with the sun gear of the planetary gear and on the other hand with the second planetary gears, which second planet gears selectively mesh with the first planetary gears and the other with the ring gear of the planetary gear.
  • a scale-setting construction of the drive unit is achieved in that the ring gear is surrounded by the electric motor, which in conjunction with the planetary gear z. B as a generator, starter, synchronizer and power supporter - booster - acts.
  • the use of the dual clutch which includes the output shaft system with the inner output shaft and the outer output shaft, it allows little effort to connect the sun gear with the inner output shaft and the planet carrier with the outer output shaft.
  • Arrangement, training and design of the dual clutch and the planetary gear with first and second planetary gear set ensure a functional synchronization of the transmission shafts of the two partial transmission of the dual clutch transmission. And beyond that is also achieved:
  • the electric motor always turns in the same direction, and it works by motor or generator. Thereby, rotational direction-defined components, such as e.g. Air compressor on the drive unit with the electric motor coupled.
  • FIG. 1 shows a schematic longitudinal section through a drive unit of a
  • Fig. 2 is a schematic section along the line II-II of FIG. 1.
  • a drive unit 1 which is installed in a motor vehicle, not shown, is composed of an internal combustion engine 2 of Hubkolbenbauart with, for example, two cylinders 3 and 4, a clutch 5 and a transmission system 6 together. Internal combustion engine 2, clutch 5 and transmission system 6 are locked together.
  • the internal combustion engine 2 acts by means of a connecting shaft 7 on the clutch 5, which connecting shaft forms an axial extension of a crankshaft, not shown, of the internal combustion engine 2.
  • the planetary gear 8 comprises a first planetary gear set 9 and a second planetary gear set 10, which interact on the one hand with a drive element 11 of the clutch 5 and on the other hand with a drive element 12 of the planetary gear 8.
  • First planetary gears 13 of the first planetary gearset 9 lie on a first circumference Kul, whose first diameter Dul is smaller than a second diameter DuII of a second circumference Kuli, are arranged on the second planet gears 14 of the second planetary gear set 10.
  • Fig. 2 only a first planetary gear 13 of the first planetary gear set 9 and a second planetary gear 14 of the second planetary gear set 10 is shown.
  • the planetary gears 13 and 14 are provided with external teeth.
  • the first planet gears 13 of the first planetary gear set 9 mesh on the one hand with a sun gear 15 of the planetary gear 8 having an external toothing and on the other hand with the second planetary gears 14 of the second planetary gear set 10.
  • the second planet gears 14 of the second planetary gear set 10 cooperate with the first planetary gears 13 on the one hand and, on the other hand, they mesh with an internal gearwheel 16 of the planetary gearwheel 8.
  • the ring gearwheel 16 of the planetary gearbox 8 is surrounded by an electric motor 17.
  • a rotor 18 of the electric motor 17 is rotatably connected to the ring gear 16 of the planetary gear 8.
  • the transmission system 6 is designed as a double-clutch transmission 19 which, in addition to a dual clutch 20, has a first partial transmission 21 with a first transmission shaft 22 and a second partial transmission 23 with a second transmission shaft 24. - - points.
  • the transmission shafts 22 and 24 carry gears for different shiftable gears of the dual clutch transmission 19th
  • the dual clutch 20 has a first inner output shaft 25 and a second outer output shaft 26 surrounding the first inner output shaft 25.
  • the first inner output shaft 25 carries the sun gear 15 of the planetary gear 8, which sun gear 15 is in operative connection with the first planet gears 13.
  • the first planetary gears 13 and the second planetary gears 14 rotate about bearing journals 28 and 29 of a planetary carrier 30 of the planetary gear 8.
  • the electric motor 17 always turns in the same direction, and it operates by motor or generator. As a result, Drehiquessdefined components, such. B. air compressor of the drive unit 1 with the electric motor 17 coupled.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Structure Of Transmissions (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to a drive unit which can preferably be used for a motor vehicle, comprising an internal combustion engine, a clutch, and a transmission system. A planetary gearing is provided between the clutch and the transmission system. The aim of the invention is to optimize said drive unit. This is achieved in that the planetary gearing has a first planetary gear set and a second planetary gear set which interact with a first drive element of the clutch and with a second drive element of the planetary gearing. The clutch (5) of the transmission system (6) is formed by a dual clutch (20) of a dual-clutch transmission (19), said dual clutch being provided with an output shaft system (27) which has a first inner output shaft (25) and a second outer output shaft (26). The sun gear (15) is rigidly connected to the inner output shaft (25), and a planet carrier (30) of the planetary gearing (8) is operatively connected to the second outer output shaft (26).

Description

- -  - -
Antriebseinheit für ein Kraftfahrzeug Drive unit for a motor vehicle
Die Erfindung bezieht sich auf eine Antriebseinheit, vorzugsweise für ein Kraftfahrzeug, nach dem Oberbegriff des Patentanspruchs 1. The invention relates to a drive unit, preferably for a motor vehicle, according to the preamble of patent claim 1.
Es ist ein Doppelkupplungsgetriebe für ein Kraftfahrzeug, insbesondere mit einem Hybridantrieb bekannt, WO 2007/042109 AI . Das Doppelkupplungsgetriebe umfasst zwei Kupplungen und zwei Getriebeeingangswellen, denen jeweils eine Triebwelle zugeordnet ist. Die Triebwellen sind Teil von zwei parallelen Getrieben mit verschiedenen Gangstufen. Zwischen den Kupplungen und den Getrieben ist eine Elektromaschine vorgesehen, die als Elektromotor und/oder Generator wirksam und mit den Getriebeeingangswellen verbindbar ist. Und die Elektromaschine ist über ein zusätzliches Getriebe mit der ersten und der zweiten Getriebeeingangswelle koppelbar. Das zusätzliche Getriebe ist als Planetengetriebe ausgeführt. It is a dual-clutch transmission for a motor vehicle, in particular with a hybrid drive known, WO 2007/042109 AI. The dual-clutch transmission includes two clutches and two transmission input shafts, each with a drive shaft assigned to it. The drive shafts are part of two parallel transmissions with different gear ratios. Between the clutches and the gears an electric machine is provided, which is effective as an electric motor and / or generator and connectable to the transmission input shafts. And the electric machine can be coupled via an additional gear with the first and second transmission input shaft. The additional gear is designed as a planetary gear.
Die US 7, 150,698 B2 befasst sich mit einem Antriebssystem für ein Kraftfahrzeug, bei dem eine Brennkraftmaschine mit einer Getriebeeinheit zusammenwirkt. Dabei beeinflusst eine Abtriebswelle der Brennkraftmaschine unter Vermittlung eines Stirnräder aufweisenden Zahnradgetriebes eine erste Eingangswelle und eine zweite Eingangswelle. Zwischen erster Eingangswelle sowie zweiter Eingangswelle und Stirnrädern des Getriebes sind schaltbare Kupplungen wirksam . Und in die Eingangswellen sind Elektromotoren geschaltet, wobei Verlängerungswellen nach den Elektromotoren mit Schaltgetrieben in Wirkverbindung stehen. Mittels der Schaltgetriebe wird Leistung auf Antriebsrädern des Kraftfahrzeugs übertragen. No. 7,150,698 B2 deals with a drive system for a motor vehicle, in which an internal combustion engine interacts with a transmission unit. In this case, an output shaft of the internal combustion engine influenced by the intermediary of a spur gears having a first input shaft and a second input shaft. Switchable clutches are effective between the first input shaft and the second input shaft and spur gears of the transmission. And in the input shafts electric motors are connected, with extension shafts are after the electric motors with manual transmissions in operative connection. By means of the manual transmission power is transmitted to drive wheels of the motor vehicle.
Aufgabe der Erfindung ist es, eine Antriebseinheit für ein Kraftfahrzeug zu konzipieren, die eine Brennkraftmaschine, eine Kupplung, ein Getriebesystem und ein Planetengetriebe umfasst, so zu gestalten, dass sie sich durch kompakte Bauweise und gute Funktion auszeichnet. Dabei sollten mit dem Planetengetriebe in Verbindung mit einem Elektromotor und dem Getriebesystem mehrere technische Aufgaben der Antriebseinheit realisierbar sein. The object of the invention is to design a drive unit for a motor vehicle, which comprises an internal combustion engine, a clutch, a transmission system and a planetary gear to be designed so that it is characterized by compact design and good function. It should be feasible with the planetary gear in conjunction with an electric motor and the transmission system several technical tasks of the drive unit.
Nach der Erfindung wird diese Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst. Weitere, die Erfindung ausgestaltende Merkmale sind in den Unteransprüchen enthalten. According to the invention, this object is solved by the features of patent claim 1. Further, the invention ausgestaltende features are included in the subclaims.
Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, dass das Planetengetriebe mit dem ersten und dem zweiten Planetenradsatz, gelagert - - an dem gemeinsamen Planetenträger, leicht mit vertretbarem Raumanspruch in die Antriebseinheit integrierbar ist. Dabei wirken der erste Planetenradsatz und der zweite Planetenradsatz auf vorbildliche Weise mit dem ersten Antriebselement der Kupplung und dem zweiten Antriebselement des Planetengetriebes zusammen, das bspw. den Elektromotor beeinflusst. Die Umsetzung des Planetengetriebes wird dadurch begünstigt, dass die ersten Planetenräder des ersten Planetenradsatzes auf dem ersten Kreisumfang liegen, dessen erster Durchmesser kleiner ist als der zweite Durchmesser des zweiten Kreisumfangs, auf dem die zweiten Planetenräder des zweiten Planetenradsatzes angeordnet sind . Dabei ist hervorzuheben, dass die ersten Planetenräder einerseits mit dem Sonnenrad des Planetengetriebes und andererseits mit den zweiten Planetenrädern kämmen, welche zweiten Planetenräder gezielt zum einen mit den ersten Planetenrädern und zum anderen mit dem Hohlrad des Planetengetriebes kämmen. Eine Maßstäbe setzende Konstruktion der Antriebseinheit wird dadurch erreicht, dass das Hohlrad von dem Elektromotor umgeben wird, der in Verbindung mit dem Planetengetriebe z. B als Generator, Starter, Synchronisierungseinrichtung und Leistungsunterstützer - Booster - wirkt. Der Einsatz der Doppelkupplung, die das Abtriebswellensystem mit der inneren Abtriebswelle und der äußeren Abtriebswelle umfasst, ermöglicht es aufwandsarm, das Sonnenrad mit der inneren Abtriebswelle und den Planetenträger mit der äußeren Abtriebswelle zu verbinden. Anordnung, Ausbildung und Auslegung der Doppelkupplung und des Planetengetriebes mit erstem und zweitem Planetenradsatz stellen eine funktionsgerechte Synchronisation der Getriebewellen der beiden Teilgetriebe des Doppelkupplungsgetriebes sicher. Und darüber hinaus wird auch noch erreicht: The advantages achieved by the invention are to be seen in the fact that the planetary gear with the first and the second planetary gear, stored - At the common planet carrier, easily with reasonable space requirement is integrated into the drive unit. In this case, the first planetary gear set and the second planetary gear set interact in an exemplary manner with the first drive element of the clutch and the second drive element of the planetary gear, which, for example, influences the electric motor. The implementation of the planetary gear is favored by the fact that the first planetary gears of the first planetary gear set lie on the first circumference whose first diameter is smaller than the second diameter of the second circumference, on which the second planet gears of the second planetary gear set are arranged. It should be emphasized that the first planetary gears mesh on the one hand with the sun gear of the planetary gear and on the other hand with the second planetary gears, which second planet gears selectively mesh with the first planetary gears and the other with the ring gear of the planetary gear. A scale-setting construction of the drive unit is achieved in that the ring gear is surrounded by the electric motor, which in conjunction with the planetary gear z. B as a generator, starter, synchronizer and power supporter - booster - acts. The use of the dual clutch, which includes the output shaft system with the inner output shaft and the outer output shaft, it allows little effort to connect the sun gear with the inner output shaft and the planet carrier with the outer output shaft. Arrangement, training and design of the dual clutch and the planetary gear with first and second planetary gear set ensure a functional synchronization of the transmission shafts of the two partial transmission of the dual clutch transmission. And beyond that is also achieved:
• Eine Drehrichtungsumkehr - Nulldurchgang der Drehzahl des Elektromotors - wird vermieden, • A reversal of the direction of rotation - zero crossing of the speed of the electric motor - is avoided
• Die Drehzahlspreizung des Elektromotors wird reduziert, will heißen die Drehzahldifferenz des Elektromotors - Start bis Ende Synchronisierung - liegt zwischen der Drehzahldifferenz der beiden zu synchronisierenden Getriebewellen, • The speed spread of the electric motor is reduced, meaning the speed difference of the electric motor - start to end synchronization - is between the speed difference of the two to be synchronized gear shafts,
• Der Elektromotor dreht stets in die gleiche Richtung, und er arbeitet motorisch oder generatorisch. Dadurch sind drehrichtungsdefinierte Komponenten, wie z.B. Klimakompressor an der Antriebseinheit mit dem Elektromotor koppelbar. • The electric motor always turns in the same direction, and it works by motor or generator. Thereby, rotational direction-defined components, such as e.g. Air compressor on the drive unit with the electric motor coupled.
In der Zeichnung wird ein Ausführungsbeispiel der Erfindung gezeigt, das nachstehend näher erläutert wird . Es zeigen : - - In the drawing, an embodiment of the invention is shown, which will be explained in more detail below. Show it : - -
Fig. 1 einen schematischen Längsschnitt durch eine Antriebseinheit eines 1 shows a schematic longitudinal section through a drive unit of a
Kraftfahrzeugs;  Motor vehicle;
Fig. 2 einen schematischen Schnitt nach der Linie II-II der Fig . 1. Fig. 2 is a schematic section along the line II-II of FIG. 1.
Eine Antriebseinheit 1, die in ein nicht dargestelltes Kraftfahrzeug einbaubar ist, setzt sich aus einer Brennkraftmaschine 2 der Hubkolbenbauart mit bspw. zwei Zylindern 3 und 4, einer Kupplung 5 und einem Getriebesystem 6 zusammen. Brennkraftmaschine 2, Kupplung 5 und Getriebesystem 6 sind miteinander verblockt. Die Brennkraftmaschine 2 wirkt mittels einer Verbindungswelle 7 auf die Kupplung 5 ein, welche Verbindungswelle eine axiale Verlängerung einer nicht dargestellten Kurbelwelle der Brennkraftmaschine 2 bildet. A drive unit 1, which is installed in a motor vehicle, not shown, is composed of an internal combustion engine 2 of Hubkolbenbauart with, for example, two cylinders 3 and 4, a clutch 5 and a transmission system 6 together. Internal combustion engine 2, clutch 5 and transmission system 6 are locked together. The internal combustion engine 2 acts by means of a connecting shaft 7 on the clutch 5, which connecting shaft forms an axial extension of a crankshaft, not shown, of the internal combustion engine 2.
Zwischen Kupplung 5 und Getriebesystem 6 ist ein Planetengetriebe 8 vorgesehen. Das Planetengetriebe 8 umfasst einen ersten Planetenradsatz 9 und einen zweiten Planetenradsatz 10, die einerseits mit einem Antriebselement 11 der Kupplung 5 und andererseits mit einem Antriebselement 12 des Planetengetriebes 8 zusammenwirken. Between clutch 5 and transmission system 6, a planetary gear 8 is provided. The planetary gear 8 comprises a first planetary gear set 9 and a second planetary gear set 10, which interact on the one hand with a drive element 11 of the clutch 5 and on the other hand with a drive element 12 of the planetary gear 8.
Erste Planetenräder 13 des ersten Planetenradsatzes 9 liegen auf einem ersten Kreisumfang Kul, dessen erster Durchmesser Dul kleiner ist, als ein zweiter Durchmesser DuII eines zweiten Kreisumfangs Kuli, auf dem zweite Planetenräder 14 des zweiten Planetenradsatzes 10 angeordnet sind . In Fig. 2 ist lediglich ein erstes Planetenrad 13 des ersten Planetenradsatzes 9 bzw. ein zweites Planetenrad 14 des zweiten Planetenradsatzes 10 dargestellt. Die Planetenräder 13 und 14 sind mit Außenverzahnungen versehen. Bei der konstruktiven Umsetzung des Planetengetriebes 8 besteht die Möglichkeit, dass pro Radsatz mindestens zwei Planetenräder eingesetzt werden. First planetary gears 13 of the first planetary gearset 9 lie on a first circumference Kul, whose first diameter Dul is smaller than a second diameter DuII of a second circumference Kuli, are arranged on the second planet gears 14 of the second planetary gear set 10. In Fig. 2, only a first planetary gear 13 of the first planetary gear set 9 and a second planetary gear 14 of the second planetary gear set 10 is shown. The planetary gears 13 and 14 are provided with external teeth. In the constructive implementation of the planetary gear 8, there is the possibility that at least two planet gears are used per wheel.
Die ersten Planetenräder 13 des ersten Planetenradsatzes 9 kämmen einerseits mit einem eine Außenverzahnung besitzenden Sonnenrad 15 des Planetengetriebes 8 und andererseits mit den zweiten Planetenrädern 14 des zweiten Planetenradsatzes 10. Und die zweiten Planetenräder 14 des zweiten Planetenradsatzes 10 arbeiten zum einen mit den ersten Planetenrädern 13 zusammen, und sie kämmen zum anderen mit einem eine Innenverzahnung umfassenden Hohlrad 16 des Planetengetriebes 8. Das Hohlrad 16 des Planetengetriebes 8 wird von einem Elektromotor 17 umgeben. Ein Rotor 18 des Elektromotors 17 ist mit dem Hohlrad 16 des Planetengetriebes 8 drehfest verbunden. The first planet gears 13 of the first planetary gear set 9 mesh on the one hand with a sun gear 15 of the planetary gear 8 having an external toothing and on the other hand with the second planetary gears 14 of the second planetary gear set 10. The second planet gears 14 of the second planetary gear set 10 cooperate with the first planetary gears 13 on the one hand and, on the other hand, they mesh with an internal gearwheel 16 of the planetary gearwheel 8. The ring gearwheel 16 of the planetary gearbox 8 is surrounded by an electric motor 17. A rotor 18 of the electric motor 17 is rotatably connected to the ring gear 16 of the planetary gear 8.
Das Getriebesystem 6 ist als Doppelkupplungsgetriebe 19 ausgebildet, das neben einer Doppelkupplung 20 ein erstes Teilgetriebe 21 mit einer ersten Getriebewelle 22 und ein zweites Teilgetriebe 23 mit einer zweiten Getriebewelle 24 auf- - - weist. Die Getriebewellen 22 und 24 tragen Zahnräder für verschiedene schaltbare Gänge des Doppelkupplungsgetriebes 19. The transmission system 6 is designed as a double-clutch transmission 19 which, in addition to a dual clutch 20, has a first partial transmission 21 with a first transmission shaft 22 and a second partial transmission 23 with a second transmission shaft 24. - - points. The transmission shafts 22 and 24 carry gears for different shiftable gears of the dual clutch transmission 19th
Die Doppelkupplung 20 besitzt eine erste innere Abtriebswelle 25 und eine zweite äußere die erste innere Abtriebswelle 25 umgebende Abtriebswelle 26. Die erste innere Abtriebswelle 25 trägt das Sonnenrad 15 des Planetengetriebes 8, welches Sonnenrad 15 in Wirkverbindung mit den ersten Planetenrädern 13 steht. Die ersten Planetenräder 13 und die zweiten Planetenräder 14 rotieren um Lagerzapfen 28 und 29 eines Planetenträgers 30 des Planetengetriebes 8. The dual clutch 20 has a first inner output shaft 25 and a second outer output shaft 26 surrounding the first inner output shaft 25. The first inner output shaft 25 carries the sun gear 15 of the planetary gear 8, which sun gear 15 is in operative connection with the first planet gears 13. The first planetary gears 13 and the second planetary gears 14 rotate about bearing journals 28 and 29 of a planetary carrier 30 of the planetary gear 8.
Durch die Konstruktion, bestehend aus Planetengetriebe 8 mit erstem Planetenradsatz 9 und zweitem Planetenradsatz 10, Elektromotor 17, Doppelkupplungsgetriebe 19 mit Doppelkupplung 20, sind folgende Funktionen und Eigenschaften der Antriebseinheit realisierbar: Due to the construction consisting of planetary gear 8 with first planetary gear set 9 and second planetary gear set 10, electric motor 17, dual-clutch transmission 19 with dual clutch 20, the following functions and properties of the drive unit can be realized:
• Synchronisation der Getriebewellen 22 und 24 des ersten Teilgetriebes 21 bzw. zweiten Teilgetriebes 23. Synchronization of the transmission shafts 22 and 24 of the first partial transmission 21 or second partial transmission 23.
• Eine Drehrichtungsumkehr - Nulldurchgang der Drehzahl des Elektromotors 17 - wird vermieden. • A reversal of rotation - zero crossing of the speed of the electric motor 17 - is avoided.
• Die Drehzahlspreizung des Elektromotors 17 wird reduziert, will heißen die Drehzahldifferenz des Elektromotors 17 - Start bis Ende Synchronisierung - liegt zwischen der Drehzahldifferenz der beiden zu synchronisierenden Getriebewellen 22 und 24, • The speed spread of the electric motor 17 is reduced, meaning the speed difference of the electric motor 17 - start to end synchronization - is between the speed difference of the two to be synchronized gear shafts 22 and 24,
Der Elektromotor 17 dreht stets in die gleiche Richtung, und er arbeitet motorisch oder generatorisch. Dadurch sind drehrichtungsdefinierte Komponenten, wie z. B. Klimakompressor der Antriebseinheit 1 mit dem Elektromotor 17 koppelbar. The electric motor 17 always turns in the same direction, and it operates by motor or generator. As a result, Drehrichtungsdefined components, such. B. air compressor of the drive unit 1 with the electric motor 17 coupled.

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Antriebseinheit für ein Kraftfahrzeug, die eine Brennkraftmaschine (2), eine Doppelkupplung (20) und ein Doppelkupplungsgetriebe (19) umfasst, wobei zwischen Doppelkupplung (20) und Doppelkupplungsgetriebe (19) ein Planetengetriebe (8) vorgesehen ist, wobei die Doppelkupplung (20) mit einem eine erste Abtriebswelle (25) und eine zweite Abtriebswelle (26) aufweisenden Abtriebswellensystem (27) versehen ist, wobei ein erstes Element des Planetengetriebes (8), insbesondere ein Sonnenrad (15), mit der ersten Abtriebswelle (25) fest verbunden ist und zweites Element des Planetengetriebes (8), insbesondere ein Planetenträger (30), mit der zweiten Abtriebswelle (26) fest verbunden ist, dadurch gekennzeichnet, dass das Planetengetriebe (8) einen ersten Planetenradsatz (9) und einen zweiten Planetenradsatz (10) aufweist, wobei die Planetenräder (13) des ersten Planetenradsatzes (9) mit dem ersten Element des Planetengetriebes (8) und den Planetenrädern (14) des zweiten Planetenradsatzes (10) kämmen und die Planetenräder (14) des zweiten Planetenradsatzes (10) zusätzlich mit einem dritten Element des Planetengetriebes (8), insbesondere einem Hohlrad (16) kämmen. 1. Drive unit for a motor vehicle, comprising an internal combustion engine (2), a dual clutch (20) and a dual-clutch transmission (19), wherein between the dual clutch (20) and dual-clutch transmission (19) is provided a planetary gear (8), wherein the double clutch ( 20) is provided with a first output shaft (25) and a second output shaft (26) having output shaft system (27), wherein a first element of the planetary gear (8), in particular a sun gear (15) fixed to the first output shaft (25) is connected and the second element of the planetary gear (8), in particular a planet carrier (30), with the second output shaft (26) is fixedly connected, characterized in that the planetary gear (8) a first planetary gear set (9) and a second planetary gear set (10 ), wherein the planet gears (13) of the first planetary gear set (9) with the first element of the planetary gear (8) and the planetary gears (14) of the second planetary gear set (10) mesh and the planet gears (14) of the second planetary gear set (10) in addition with a third element of the planetary gear (8), in particular a ring gear (16) mesh.
2. Antriebseinheit nach Anspruch 1, dadurch gekennzeichnet, dass erste Planetenräder (13) des ersten Planetenradsatzes (9) auf einem ersten Kreisumfang (Kul) liegen, dessen erster Durchmesser (Dul) kleiner ist als ein zweiter Durchmesser (DuII) eines zweiten Kreisumfangs (KuII), auf dem zweite Planetenräder (14) des zweiten Planetenradsatzes (10) angeordnet sind . 2. Drive unit according to claim 1, characterized in that the first planetary gears (13) of the first planetary gear set (9) lie on a first circumference (Kul) whose first diameter (Dul) is smaller than a second diameter (DuII) of a second circumference ( KuII), on the second planet wheels (14) of the second planetary gear set (10) are arranged.
3. Antriebseinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Hohlrad (16) von einem Elektromotor (17) umgeben wird, der z. B. als Generator; Starter; Leistungsunterstützer oder dgl. wirkt. 3. Drive unit according to claim 1 or 2, characterized in that the ring gear (16) by an electric motor (17) is surrounded, the z. B. as a generator; Starter; Leistungsunterstützer or the like. Acts.
4. Antriebseinheit nach Anspruch 3, dadurch gekennzeichnet, dass das Hohlrad (16) des Planetengetriebes (8) mit einem Rotor (18) des Elektromotors (17) in Wirkverbindung steht. 4. Drive unit according to claim 3, characterized in that the ring gear (16) of the planetary gear (8) with a rotor (18) of the electric motor (17) is in operative connection.
5. Antriebseinheit nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Planetenträger (30) mit Lagerzapfen (28 und 29) für die ersten Planetenräder (13) und die zweiten Planetenräder (14) versehen ist. 5. Drive unit according to one or more of the preceding claims, characterized in that the planet carrier (30) with bearing pins (28 and 29) for the first planetary gears (13) and the second planetary gears (14) is provided.
6. Antriebseinheit nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass durch die Konstruktion, bestehend aus Planetengetriebe (8) mit erstem Planetenradsatz (9) und zweitem Planetenradsatz (10), Elektromotor (17), Doppelkupplungsgetriebe (19) mit Doppelkupplung (20), folgende Funktionen und Eigenschaften der Antriebseinheit (1) realisierbar sind : 6. Drive unit according to one or more of the preceding claims, characterized in that by the construction consisting of Planetary gear (8) with first planetary gear set (9) and second planetary gear set (10), electric motor (17), dual clutch transmission (19) with double clutch (20), the following functions and properties of the drive unit (1) can be realized:
• Synchronisation der Getriebewellen (22 und 24) des ersten Teilgetriebes (21 bzw. zweiten Teilgetriebes 32), Synchronization of the transmission shafts (22 and 24) of the first subtransmission (21 or second subtransmission 32),
• eine Drehrichtungsumkehr - Nulldurchgang der Drehzahl des Elektromotors (17) - wird vermieden, • a reversal of the direction of rotation - zero crossing of the speed of the electric motor (17) - is avoided
• die Drehzahlspreizung des Elektromotors (17) wird reduziert, dergestalt, dass die Drehzahldifferenz des Elektromotors (17) - Start bis Ende Synchronisierung - zwischen der Drehzahldifferenz der beiden zu synchronisierenden Getriebewellen (22 und 24) liegt, und • The speed spread of the electric motor (17) is reduced, such that the speed difference of the electric motor (17) - start to end synchronization - between the speed difference of the two to be synchronized transmission shafts (22 and 24), and
• der Elektromotor (17) dreht stets in die gleiche Richtung, und er arbeitet motorisch oder generatorisch, dergestalt, dass drehrichtungsdefi- nierte Komponenten, wie z. B. Klimakompressor an Antriebseinheit (1) mit dem Elektromotor(17) koppelbar sind. • The electric motor (17) always rotates in the same direction, and it operates by motor or generator, in such a way that components that are defined in terms of the direction of rotation, such as, for example. B. air compressor to drive unit (1) with the electric motor (17) can be coupled.
PCT/EP2013/056400 2012-04-03 2013-03-26 Drive unit for a motor vehicle WO2013149885A1 (en)

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CN104832607A (en) * 2014-11-13 2015-08-12 北汽福田汽车股份有限公司 Transmission and vehicle with same
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CN112065935B (en) * 2020-08-17 2022-03-22 中国第一汽车股份有限公司 Multi-gear double-clutch transmission

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