EP3615846A1 - Powertrain for a motor vehicle, differential planetary gear system for a powertrain, and motor vehicle comprising a powertrain - Google Patents
Powertrain for a motor vehicle, differential planetary gear system for a powertrain, and motor vehicle comprising a powertrainInfo
- Publication number
- EP3615846A1 EP3615846A1 EP18721313.7A EP18721313A EP3615846A1 EP 3615846 A1 EP3615846 A1 EP 3615846A1 EP 18721313 A EP18721313 A EP 18721313A EP 3615846 A1 EP3615846 A1 EP 3615846A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- ring gear
- sun gear
- teeth
- drive train
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
-
- 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
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
-
- 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
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
-
- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
-
- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
- B60K17/346—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear
-
- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/348—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed
-
- 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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
-
- 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
- F16H48/00—Differential gearings
- F16H2048/02—Transfer gears for influencing drive between outputs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
Definitions
- the invention relates to a drive train for a motor vehicle, with a Planetenraddifferential, which at least one ring gear with a ring gear, at least one sun gear with a sun gear, planetary gears, which on the one hand with the ring gear and on the other hand with the sun gear in engagement and a planet carrier, on which the Planet wheels are rotatably mounted, has. Further aspects of the invention relate to a planetary gear differential for a drive train and to a motor vehicle with a drive train. Such powertrains are widely used in motor vehicle manufacturing and in particular in mass production and are used to accomplish a torque distribution, for example a drive torque via the planetary gear differential. Depending on the design, different torque distributions to a sun gear, Planetenrä- and a ring gear of the planetary gear differential can be specified.
- a transfer case with a planetary gear is known.
- the planetary gear is used to distribute torque to an output shaft for a front axle and a rear axle.
- DE 10 2009 032 286 A1 describes a spur gear differential with a first sun and a second sun, wherein the first sun is associated with a first set of planet wheels and the second sun with a second set of planet wheels.
- a self-locking spur gear differential is known.
- the differential gear has differential gears whose teeth are formed as a truncated toothing.
- Object of the present invention is to provide a drive train for a motor vehicle, which has a particularly flexible planetary gear differential.
- Another object of the invention is to provide a planetary gear differential for such a drive train and a motor vehicle with such a drive train.
- the invention is based on a drive train for a motor vehicle, with a Planetenraddifferential.
- the Planetenraddifferential has at least one ring gear with a ring gear, at least one sun gear with a sun gear, planetary gears, on the one hand with the Hohlradge- toothing and on the other hand with the sun gear in engagement and a planet carrier on which the planet gears are rotatably mounted on.
- the Planetenraddifferential can be formed, for example differential than Stirnrad- wherein, accordingly, the ring gear, the sun gear and each Planetenradverzahnungen the planetary gears can be configured as a respective spur gear teeth.
- the Planetenraddifferential allows the arrangement of the planet gears and the sun gear within the ring gear, whereby a total of a particularly compact arrangement can be achieved.
- the internal gear teeth and the sun gear teeth have the same number of respective gear teeth.
- the ring gear can have a certain number of ring gear teeth, which corresponds to a corresponding number of sun gear teeth of the sun gear.
- the Planetenrad- carrier can be driven by a prime mover, for example by an internal combustion engine or by an electric motor of the drive train, so coupled with the corresponding drive machine torque transmitting or coupled. Between the drive machine and the planet carrier can be arranged for this purpose a switchable coupling.
- respective gear ratios between the sun gear and the planet gears and between the planet gears and the ring gear are the same. Due to the respective same number of respective gear teeth, a, provided by the engine drive torque over the planet and the planet gears evenly distributed to the ring gear and the sun gear, so that the sun gear and the ring gear can be driven with the same torque proportion, for example, the drive torque , This makes it possible to drive by means of the ring gear and the sun even opposing drive wheels of an axis of the drive train, so that the Planetenrad- differential even used as an axle differential.
- the planetary gear differential can thus be used not only for torque distribution between the respective front axles and rear axles of the drive train, but also for torque distribution between axially aligned drive wheels of a single axis, whereby the Planetenraddifferenti- al all particularly flexible can be used.
- the ring gear and the sun gear may have a respective number of teeth of the respective gear teeth in the range of, for example, 50 to 200 teeth.
- the planet gears may have a respective planetary gear tooth number in the range of, for example, 10 to 30 teeth.
- Such numbers of teeth enable a particularly compact design of the planetary gear differential and a particularly needs-based power distribution, for example, from the planet gear carrier to the sun gear and the ring gear. Due to the compact design, there is a mass reduction in comparison to known from the prior art axle differentials.
- the Hohlradverzah- tion and the sun gear have the same module.
- the ring gear teeth and the sun gear can thereby have the same gear pitch (distance between two adjacent teeth).
- the module provides a measure of the respective size of the ring gear teeth of the ring gear teeth and the sun gear teeth of the sun gear.
- At least the ring gear teeth and the sun gear teeth are formed as respective butt teeth.
- the respective butt teeth are formed as rolled butt teeth, which can be produced with particularly low production costs and thus particularly cost-effectively.
- rolled butt teeth is meant, in particular, a butt toothing formed by rolling, and the respective butt teeth can be produced by a rolling process that at least partially transforms the ring gear or the sun gear
- the respective butt teeth have a respective tooth height which is smaller than 1.2 times the modulus, in particular smaller than that of the toothed tooth
- the planetary gears are under the repeal of axial forces with the ring gear and the sun gear in engagement.
- This is an advantage, as a whole particularly low bearing forces, for example, act on respective bearing pin, by means of which the planet gears can be rotatably received on the planet carrier.
- the repeal of the axial forces can be achieved for example by the fact that respective Vernierungsschrägungswinkel the ring gear and the sun gear can be selected and matched to each other, that between the ring gear and the planetary gears acting, first axial forces and acting between the sun gear and the planetary gears, second axial forces can cancel each other out.
- the internal gear teeth and the sun gear teeth are formed as respective helical gearing, double helical gearing, helical gearing, curved gearing or double angular gearing.
- These types of toothing are advantageous because a small profile overlap can be at least largely compensated for by respective helix angles of these types of toothing and, advantageously, a jump overlap can be generated.
- the ring gear with a first drive wheel of the drive train and the sun gear with a second drive wheel of the drive train is coupled torque-transmitting.
- a particularly favorable load distribution over the Planetenraddifferential is given by the radially outer ring gear drives the first drive wheel and the radially inner sun gear, the second drive wheel.
- the Planetenraddifferential may preferably be designed as an axle differential of an axle through which the two axially aligned drive wheels can be driven.
- the axle can be designed, for example, as a front axle or as a rear axle of the motor vehicle.
- the ring gear on an outer toothing, via which the ring gear is coupled to transmit torque to the first drive wheel and the sun gear has an internal toothing, via which the sun gear is coupled to transmit torque to the second drive wheel.
- the outer toothing can be connected to a hollow shaft coupled to the first drive wheel. element, which may for example have a bell shape, and which may have a complementary to the external teeth Hohlwelleninnen- toothing, be engaged.
- the internal toothing can be engaged with a shaft element coupled to the second drive wheel, which shaft element can have external shaft toothing complementary to the internal toothing.
- the internal toothing and the shaft outer toothing of the shaft element may preferably form a shaft-hub connection in the form of a spline.
- other types of connection such as polygonal connections and welded constructions can be selected.
- a second aspect of the invention relates to a planetary gear differential for a drive train.
- the features presented in connection with the drive train according to the invention and their advantages apply correspondingly to the planetary gear differential according to the invention and vice versa.
- a third aspect of the invention relates to a motor vehicle with a drive train.
- the features presented in connection with the drive train according to the invention and the planetary differential according to the invention and their advantages apply correspondingly to the motor vehicle according to the invention and vice versa.
- FIG. 1 shows a motor vehicle 100 with a drive train 10, which has a planetary gear differential 20 and is shown only schematically here.
- the Planetenraddifferential 20 is designed here as an axle differential and is used to drive two, axially aligned with each other arranged drive wheels 96, 98 of a drive axle of the drive train 10th
- the Planetenraddifferential 20 has a ring gear 30 with a Hohlradge- toothing 32, a sun gear 50 with a sun gear 52, three planetary gears 70, 72, 74, which via respective Planetenradvertechnikept 76 on the one hand with the ring gear 32 and on the other hand with the sun gear 52 in engagement and a planet carrier 80 on which the planetary gears 70, 72, 74 are rotatably supported via respective bearing pins 82.
- the ring gear teeth 32 comprise ring gear teeth 34 and the sun gear teeth 52 comprise sun gear teeth 54.
- the number of ring gear teeth 34 and sun gear teeth 54 is identical so that the ring gear teeth 32 and sun gear teeth 52 have the same number of respective gear teeth (ring gear teeth 34, sun gear teeth 54). exhibit. Furthermore, the ring gear teeth 32 and the sun gear teeth 52 have the same module.
- the ring gear 32 and the sun gear 52 are formed as respective butt teeth and in particular as rolled Stumpfver leopardun- gene.
- respective butt teeth By the respective butt teeth, a large profile displacement of the respective teeth can be achieved in a particularly advantageous manner, since the butt teeth allows a great deal of freedom in the choice of the lower limit and the maximum limit of the teeth.
- the respective butt teeth have a tooth height which may be less than 1, 2 times the module.
- the tooth height of the respective stud teeth may be smaller than the modulus of the ring gear teeth 32 and the sun gear teeth 52, whereby the planetary gear differential 20 may be made particularly compact at least in its radial direction.
- the planetary gears 70, 72, 74 are forces with the repeal of axial forces on the respective Planetenradvertechnikept 76 with the ring gear 32 and the sun gear 52 in engagement.
- the ring gear teeth 32 and the sun gear teeth 52 are designed as complementary gears.
- the ring gear teeth 32 and the sun gear teeth 52 can accordingly as mutually complementary types of gears, to which a helical toothing, a double helical toothing, an arrow toothing, a curved toothing or a double-angular toothing may be configured.
- the ring gear 30 is coupled with the first drive wheel 96 of the drive train 10 and the sun gear 50 with the second drive wheel 98 of the drive train 10 to transmit torque.
- the ring gear 30 has an outer toothing 40, via which the ring gear 30 is coupled with the first drive wheel 96 to transmit torque.
- the sun gear 50 has an internal toothing 60, via which the sun gear 50 is coupled to transmit torque to the second drive wheel 98.
- Torque can be transmitted to a hollow shaft element 36, which is coupled to the first drive wheel 96, via the external toothing 40.
- the hollow shaft element 36 may be designed bell-shaped in some areas, so that the ring gear 30 may be surrounded by the hollow shaft member 36 at least partially.
- the internal toothing 60 of the sun gear 50 can be coupled to transmit torque to a shaft element 56, wherein the shaft element 56 can be coupled to the second drive wheel 98, as shown in the present case in the figure.
- the Planetenraddifferential 20 has due to the butt teeth generally a particularly compact design and few components compared to known from the prior art differentials.
- the planet carrier 80 may be coupled to transmit torque with a drive machine of the drive train 10 not shown here, wherein an entire drive power expended by the drive machine is transmitted to the planetary carrier 80 via the individual planet gears 70, 72, 74 and advantageously over the entire gear width of the respective one Gears (ring gear 32, Sonnenradge- toothing 52, Planetenradvertechnikept 76) can be transmitted.
- the respective toothings (butt teeth) can preferably be produced in a particularly favorable manner by forming, for example by a forming rolling process and accordingly.
- butt teeth By the butt teeth a large profile displacement of the respective teeth can be achieved, which in particular the same number of teeth and the same module for the ring gear teeth 32 of the ring gear 30 and for the sun nenenenverierenung 52 of the sun gear 50 can be achieved, although the ring gear 30 and the sun gear 50 have different diameters.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017207047.1A DE102017207047B4 (en) | 2017-04-26 | 2017-04-26 | Drive train for a motor vehicle, planetary gear differential for a drive train and motor vehicle with a drive train |
PCT/EP2018/060375 WO2018197431A1 (en) | 2017-04-26 | 2018-04-23 | Powertrain for a motor vehicle, differential planetary gear system for a powertrain, and motor vehicle comprising a powertrain |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3615846A1 true EP3615846A1 (en) | 2020-03-04 |
Family
ID=62091848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18721313.7A Withdrawn EP3615846A1 (en) | 2017-04-26 | 2018-04-23 | Powertrain for a motor vehicle, differential planetary gear system for a powertrain, and motor vehicle comprising a powertrain |
Country Status (5)
Country | Link |
---|---|
US (1) | US11255418B2 (en) |
EP (1) | EP3615846A1 (en) |
CN (1) | CN110637179A (en) |
DE (1) | DE102017207047B4 (en) |
WO (1) | WO2018197431A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110173553A (en) * | 2019-06-10 | 2019-08-27 | 杨巍 | Differential mechanism, hub-type differential mechanism and the motor cycle combination with hub-type differential mechanism |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1730184A (en) * | 1928-02-07 | 1929-10-01 | Wildhaber Ernest | Differential gear |
US2080477A (en) * | 1935-08-23 | 1937-05-18 | Four Wheel Drive Auto Company | Compensating differential |
CH237300A (en) | 1943-11-04 | 1945-04-15 | Rheinmetall Borsig Ag | Self-locking spur gear differential. |
US3292456A (en) * | 1964-04-30 | 1966-12-20 | Illinois Tool Works | Spin limiting differential |
US4014224A (en) * | 1973-10-12 | 1977-03-29 | Pitts Drive, Inc. | Speed differential planetary gear train |
US3899938A (en) * | 1974-05-08 | 1975-08-19 | Caterpillar Tractor Co | Planetary torque proportional differential |
DE3938888B4 (en) | 1988-12-08 | 2005-03-24 | Zf Friedrichshafen Ag | Transfer Case |
DE102009032286B4 (en) | 2008-12-18 | 2022-01-05 | Schaeffler Technologies AG & Co. KG | Spur gear differential with positive and negative profile shift on the sun gears |
DE102010025274B4 (en) * | 2010-06-28 | 2014-01-23 | Werner Müller | Gear arrangement |
DE102010047143A1 (en) * | 2010-09-30 | 2012-04-05 | Schaeffler Technologies Gmbh & Co. Kg | Planetary gear, planetary differential and gearbox with the planetary differential |
US20110143880A1 (en) * | 2010-12-01 | 2011-06-16 | General Electric Company | Drivetrain for generator in wind turbine |
DE102011080002B4 (en) * | 2011-07-28 | 2013-02-21 | Schaeffler Technologies AG & Co. KG | Spur gear |
DE102012219212A1 (en) * | 2012-10-22 | 2014-04-24 | Schaeffler Technologies Gmbh & Co. Kg | Spur gear differential for use as e.g. distribution, branching, and axle differential gear box in motor car, has coupling and circulation planetary parts formed such that cladding circle is smaller than addendum circle of teeth |
EP2998615B1 (en) | 2014-09-17 | 2019-07-03 | GE AVIO S.r.l. | Planet-carrier for an epicyclic gearing and epicyclic gearing provided with such a planet-carrier |
CN106555851B (en) * | 2015-09-25 | 2019-09-13 | 比亚迪股份有限公司 | Differential mechanism, power drive system and vehicle |
EP3312476B1 (en) * | 2016-10-24 | 2021-09-29 | Volvo Car Corporation | Vehicle with transmission having a spline connection |
-
2017
- 2017-04-26 DE DE102017207047.1A patent/DE102017207047B4/en active Active
-
2018
- 2018-04-23 CN CN201880028023.XA patent/CN110637179A/en not_active Withdrawn
- 2018-04-23 EP EP18721313.7A patent/EP3615846A1/en not_active Withdrawn
- 2018-04-23 US US16/606,914 patent/US11255418B2/en active Active
- 2018-04-23 WO PCT/EP2018/060375 patent/WO2018197431A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2018197431A1 (en) | 2018-11-01 |
US20200191248A1 (en) | 2020-06-18 |
DE102017207047B4 (en) | 2019-05-23 |
CN110637179A (en) | 2019-12-31 |
US11255418B2 (en) | 2022-02-22 |
DE102017207047A1 (en) | 2018-10-31 |
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Inventor name: BURATOWSKI, PHILIPP Inventor name: HIRSCH, MICHAEL Inventor name: STREHMEL, PETER Inventor name: HEILMANN, MARKUS Inventor name: WEIHMANN, CHRISTIAN |
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