EP1346168A1 - Infinitely variable transmission with power by-pass - Google Patents

Infinitely variable transmission with power by-pass

Info

Publication number
EP1346168A1
EP1346168A1 EP01271508A EP01271508A EP1346168A1 EP 1346168 A1 EP1346168 A1 EP 1346168A1 EP 01271508 A EP01271508 A EP 01271508A EP 01271508 A EP01271508 A EP 01271508A EP 1346168 A1 EP1346168 A1 EP 1346168A1
Authority
EP
European Patent Office
Prior art keywords
reduction
transmission
transmission according
electric machine
stages
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Withdrawn
Application number
EP01271508A
Other languages
German (de)
French (fr)
Inventor
Pierre Anthoine
Sébastien CHANSON
Keyvan Kargar
Ahmed Kefti-Cherif
Magali Rouge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP1346168A1 publication Critical patent/EP1346168A1/en
Withdrawn legal-status Critical Current

Links

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
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
    • F16H2037/0866—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft
    • 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 present invention relates to a power bypass transmission making it possible to obtain a continuous variation of reverse gear ratio in forward gear, passing through a particular position, called “neutral in engagement”, where the speed of movement of the vehicle is zero, for any engine speed.
  • an infinitely variable power derivation transmission comprising at least one planetary gear train, a reduction stage and two electric machines, the various constituent elements of this transmission being distributed over two parallel power channels connecting the heat engine of a vehicle at the wheels thereof.
  • a transmission can be based on three principles, or modes, of known power derivation.
  • the transmission comprises a pair of power bypass gears which derives the power at the input of the mechanism, and a planetary gear train “assembler”, which gathers the powers at the output of the mechanism.
  • the control element is a dimmer.
  • Coupled output power bypass transmissions there is for example a planetary power divider train at the input of the mechanism and a couple of power-gathering pinions at the output of the mechanism, the control element always being a variator.
  • a first planetary power divider train can be placed at the input of the gearbox, while a second train epicycloidal power assembly is arranged at the outlet of the gearbox, the control element always being a variator.
  • Infinitively Variable transmission can use any of these three operating principles.
  • one of the electric machines is connected directly to the planet wheel of the planetary gear train
  • the heat engine is connected directly to the planet carrier of the planetary gear train
  • the second electric machine drives the crown of the planetary gear train. The movement is exited by the latter towards the wheels after reduction.
  • the present invention provides a transmission based on the principle of power derivation, and applicable both on a conventional vehicle than on a hybrid vehicle, while respecting the usual performance of conventional vehicles. It provides for this purpose that the first channel contains the two electrical machines connected in series, that the second channel includes the other elements of the transmission, and that this transmission contains at least two distinct reduction stages. Thanks to the invention, a hybrid vehicle retains its performance, even when its batteries are empty.
  • Another objective of the invention is to propose an infinitely variable power derivation transmission which can have either a coupled input or a coupled output, or two adaptation points.
  • the proposed measures also facilitate the technical definition of transmission according to the different applications envisaged.
  • the development of a determined power, the use of one or more power sources, the obtaining of specific performances can be ensured by making appropriate connections between the various components of the transmission, the sources of and the wheels.
  • the first power channel of this transmission can thus be connected to an electrical energy storage element, or to an electrical energy generator.
  • two reduction stages can be arranged on either side of an epicyclic train, on either side of two epiclyoid trains, or even between two epicyclic trains.
  • FIG. 1 illustrates the prior art
  • FIGS. 2 to 15 are from simplified functional diagrams corresponding to different embodiments of the invention.
  • FIG. 1 the heat engine 1 is linked to the planet carrier 15 of the planetary gear train 8.
  • a first electric machine 3a is directly linked to the sun gear 12 of the train 8
  • a second electric machine 3b is directly linked to the crown 18 of the train 8.
  • the wheels 2 are also connected to the crown 18, but via a reduction gear 19, 20.
  • the transmission of Figure 2 is coupled input. It consists of a planetary gear train 8, four reduction stages 4, 5, 6, 7, and two electric machines together constituting a variator 3.
  • the heat engine 1 is connected to the reduction stage 4.
  • the wheels 2 are connected to the reduction stage 6.
  • a first electric machine of the variator 3 is connected to the reduction stage 5, and a second electric machine of the variator is linked to the reduction stage 7.
  • the four stages reduction 4, 5, 6 and 7, are connected to the planetary gear train 8.
  • the first channel is connected to an electric energy storage element or to an electric energy generator not shown.
  • the transmission of Figure 3 is of the coupled output type. It is composed of an epicyclic train 8, four reduction stages 4, 5, 6, 7, and two electric machines constituting together a variator 3.
  • the heat engine is connected to the reduction stage 6.
  • the wheels are connected to the reduction stage 4.
  • a first electric machine of the variator 3 is connected to the reduction stage 5.
  • a second machine the variator 3 is connected to the reduction stage 7.
  • the reduction stages 4, 5, 6 and 7 are connected to the planetary gear train 8.
  • the transmission of Figure 4 also according to the invention is of the type with two adaptation points. It is composed of two planetary gear trains 8 and 9, four reduction stages 4, 5, 6 and 7, and two electric machines together constituting a variator 3.
  • the heat engine 1 is connected to the reduction stage 4.
  • the wheels 2 are connected to the reduction member 7.
  • a first electric machine of the variator 3 is connected to the reduction stage 5.
  • a second electric machine of the variator 3 is connected to the reduction stage 6.
  • the reduction stages 4, 5 and 6 are connected to the planetary gear 8.
  • the reduction stages 5, 6 and 7 are connected to the planetary gear 9.
  • the transmission of Figure 5 is based on the principle of power derivation two adaptation points. It is made up of 2 planetary gear trains 8 and 9, four reduction stages 4, 5, 6, 7 and two electric machines together constituting the variator 3.
  • the heat engine 1 is connected to the reduction stage 4.
  • the wheels 2 are connected to the reduction stage 6.
  • a first electric machine of the variator 3 is connected to the reduction stage 5, and a second electric machine of the variator 3 is connected to the reduction stage 7.
  • the reduction stages 4, 6 and 7 are connected to the planetary gear (8).
  • the reduction stages 5, 6 and 7 are connected to the planetary gear train 9.
  • Figure 6 also according to the invention, is based on the principle of power derivation at two adaptation points. It is composed of two planetary trains 8 and 9, four reduction stages
  • the heat engine 1 is connected to the reduction stage 7.
  • the wheels 2 are connected to the reduction stage 5.
  • a first electric machine of the speed controller 3 is connected to the reduction stage 4.
  • a second electric machine of the speed controller 3 is connected to the reduction stage 6.
  • the reduction stages 4, 5 and 7 are connected to the planetary gear train 8.
  • the reduction stages 5, 6 and 7 are connected to the planetary gear train 9.
  • the heat engine 1 is connected to the reduction stage 4.
  • the wheels 2 are connected to the reduction stage 7.
  • a first electrical machine of the variator 3 is connected to the reduction stage 7a.
  • a second electric machine of the variator 3 is connected to the reduction stages 5 and 6.
  • the reduction stages 4, 5 and 7a are connected to the planetary gear train 8.
  • the reduction stages 6, 7 and 7a are connected to the planetary gear train 9.
  • the transmission of Figure 8 is based on the principle of power derivation at two adaptation points.
  • She is composed of two planetary gear trains 8 and 9, five reduction stages 4, 5, 6, 7, 7a and two electric machines together constituting the variator 3.
  • the heat engine 1 is connected to the reduction stage 4.
  • the wheels 2 are connected to the reduction stages 5 and 6.
  • a first electric machine of the variator 3 is connected to the reduction stage 7.
  • a second electric machine of the variator 3 is connected to the reduction stage 7a.
  • the reduction stages 4, 5 and 7a are connected to the planetary gear 9.
  • the reduction stages 6, 7 and 7a are connected to the planetary gear 10.
  • the transmission of Figure 9 is based on the principle of power derivation two adaptation points. It is made up of two planetary gear trains 8 and 9, five reduction stages 4, 5, 6, 7, 7a and two electric machines which together constitute the variator 3.
  • the heat engine 1 is connected to reduction stages 5 and 6.
  • the wheels 2 are connected to the reduction stage 7a.
  • a first electric machine of the variator 3 is connected to the reduction stage
  • a second electrical machine of the variator 3 is connected to the reduction stage 7.
  • the reduction stages 4, 5 and 7a are connected to the planetary gear train 8.
  • the reduction stages 6, 7 and 7a are connected to the planetary gear train 9
  • the transmission of FIG. 10, according to the invention, is based on the principle of power derivation at two adaptation points. It is composed of two planetary trains 8 and 9, five reduction stages 4,
  • the heat engine 1 is connected to the reduction stage 7a.
  • the wheels 2 are connected to the reduction stage 4.
  • a first electric machine of the variator 3 is connected to the reduction stages 5 and 6.
  • a first electric machine of the variator 3 is connected to the reduction stage 7.
  • the reduction stages 4, 5 and 7 ⁇ are connected to the planetary gear 8.
  • the reduction stages 6, 7 and 7a are connected to the planetary gear 9.
  • the transmission of Figure 11, is based on the principle of power derivation two adaptation points. It is composed of two planetary gear trains 8 and 9, six reduction stages 4, 5, 6, 7, 7a, 7b, and two electric machines together constituting the variator 3.
  • the heat engine 1 is connected to the stage of reduction 4.
  • the wheels 2 are connected to the reduction stage 7.
  • a first electric machine of the variator 3 is connected to the reduction stages 5 and 6.
  • a second electric machine of the variator 3 is connected to the reduction stages 7a and 7b.
  • the reduction stages 4, 5 and 7b are connected to the planetary gear 10.
  • the reduction stages 6, 7 and 7a are connected to the planetary gear 9.
  • the transmission of Figure 12 is based on the principle of power derivation at two adaptation points. It is composed of two planetary gear trains 8 and 9, six reduction stages 4, 5, 6, 7, 7a, 7b, and two electric machines together constituting the variator 3.
  • the heat engine 1 is connected to the stage of reduction 4.
  • the wheels 2 are connected to the reduction stages 5 and 6.
  • a first electric machine of the variator 3 is connected to the reduction stage 7.
  • a second electric machine of the variator 3 is connected to the reduction stages 7a and 7b.
  • the reduction stages 4, 5 and 7b are connected to the planetary gear 8.
  • the reduction stages 6, 7 and 7a are connected to the planetary gear 9.
  • the transmission of FIG. 13, according to the invention is also based on the power derivation principle at two adaptation points.
  • the heat engine 1 is connected to the reduction stages 7a and 7b.
  • the wheels 2 are connected to the reduction stage 7.
  • a first electric machine of the variator 3 is connected to the reduction stages 5 and 6.
  • a second electric machine of the variator 3 is connected to the reduction stage 4.
  • the stages of reduction 4, 5 and 7b are connected to the planetary gear 9.
  • the reduction stages 6, 7 and 7a are connected to the planetary gear 9.
  • the transmission of FIG. 14, also according to the invention, is based on the principle of derivation of coupled output power. It is composed of two planetary gear trains 8 and 9, six reduction stages 4, 5, 6, 7, 7a, 7b, and two electric machines which together constitute the variator 3.
  • the heat engine 1 is connected to the stage of reduction 4.
  • the wheels 2 are connected to the reduction stages 7 and 7a.
  • a first electric machine of the variator 3 is connected to the reduction stages 7a and 7b.
  • a second electric machine of the variator 3 is connected to the reduction stage 6.
  • the reduction stages 4, 5 and 7b are connected to the epicyclic train 8.
  • the reduction stages 5, 6 and 7 are connected to the epicyclic train 9.
  • the transmission according to the invention of FIG. 15, also according to the invention, is based on the principle of power derivation with coupled output.
  • the heat engine 1 is connected to the reduction stages 7a and 7b.
  • the wheels 2 are connected to the reduction stage 6.
  • a first electric machine of the variator 3 is connected to the reduction stage 4.
  • a second electric machine of the variator 3 is connected to reduction stages 7 and 7a.
  • the reduction stages 4, 5 and 7b are connected to the planetary gear 8.
  • the reduction stages 5, 6 and 7 are connected to the planetary gear 9.
  • FIG. 16 shows a transmission architecture according to the invention, of the type with coupled input, because an electric machine 3a and the heat engine 1 attack the same shaft 12, linked to the planetary of the planetary gear train 8.
  • This architecture corresponds to the functional diagram of FIG. 2.
  • the second electric machine 3b is connected by a reduction gear 16, 17, to the crown 18 of the train 8.
  • the movement output by the wheels 2 is connected to the planet carrier 15, by the intermediate of the reduction gear 19, 20.
  • the heat engine 1 is connected to the sun gear 12 by means of the reduction gear 10, 11.
  • the transmission of FIG. 16 has four reduction stages, arranged respectively between the heat engine and the second power track (constituted by the train 8), between a first electric machine 3a and this second track, between the second electric machine 3b and this same second track, and between this second track and wheels 2.
  • the reducers, or reduction stages, appearing in FIG. 16 are simple descents of gears constituted by a pair of pinions. However, without departing from the scope of the invention, they may as well be constituted by three successive pinions (triple descents), or soupy connections, of the chain or belt type.
  • Figure 17 differs from Figure 16 in that the first electric machine 3a is connected to the input 12 of the train 8, and not to the carrier s ⁇ tellites 15.
  • This architecture corresponds to the functional diagram of FIG. 3.
  • the arrangement of the four reducers corresponds to that of FIG. 16.
  • the transmission of the invention can comprise four reduction stages, arranged respectively between the heat engine and the second path, between the second path and a first electric machine, between the second path. and a second electric machine, between the second track and the wheels.
  • FIG. 18 there are two planetary gear trains 8, 9.
  • the heat engine 1 drives, via a reduction gear 10, 11, the crown 18 of the first train 8.
  • the first electric machine 3a is linked, by the through a reduction gear 16, 17, to the crown 18.
  • the latter is connected, by means of two successive reducers 19, 20 and 21, 22, to the planet carrier 25 of the second train 9.
  • the planet carrier 15 of the first train 8 is connected by three successive reducers, 13, 14; 26, 27; 28, 29, to the second electric machine 3b and to the sun gear 30 of the second train.
  • the wheels 2 are connected to the crown 33 of the second train 9 by means of a reduction gear 31, 32.
  • the two connected trains by two direct mechanical connections
  • the reduction stages are arranged around the two trains, or at least one reduction stage arranged between the two trains.
  • the first channel is advantageously connected to an electric energy storage element or to an electric energy generator not shown in the diagrams.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Transmission Devices (AREA)
  • Retarders (AREA)

Abstract

The invention concerns an infinitely variable transmission with power by-pass comprising at least a planetary gear set (8), a reduction stage (4; 10, 11) and two electric machines (3; 3a, b), the various elements constituting said transmission being distributed on two parallel power paths connecting the heat engine (1) of a vehicle to the two wheels (2) thereof. The invention is characterised in that the first path comprises two electric machines mounted in series, and the second path assembles the other transmission elements, and said transmission comprises at least a second reduction stage (5, 13, 14), separate from the first.

Description

T ANSMISSION INFINIMENT VARIABLE A DERIVATION DE INFINITELY VARIABLE T ANSMISSION DERIVED FROM
PUISSANCEPOWER
La présente invention concerne une transmission à dérivation de puissance permettant d'obtenir une variation continue de rapport de marche arrière en marche avant, en passant par une position particulière, dite « neutre en prise », où la vitesse de déplacement du véhicule est nulle, pour un régime quelconque du moteur thermique.The present invention relates to a power bypass transmission making it possible to obtain a continuous variation of reverse gear ratio in forward gear, passing through a particular position, called “neutral in engagement”, where the speed of movement of the vehicle is zero, for any engine speed.
Plus précisément, elle a pour objet une transmission infiniment variable à dérivation de puissance comportant au moins un train épicycloïdal, un étage de réduction et deux machines électriques, les différents éléments constitutifs de cette transmission étant répartis sur deux voies de puissance parallèles reliant le moteur thermique d'un véhicule aux roues de celui-ci. Une telle transmission peut reposer sur trois principes, ou modes, de dérivation de puissance connus. Selon le premier mode, dit « à entrée couplée », la transmission comporte un couple de pignons de dérivation de puissance qui dérive la puissance à l'entrée du mécanisme, et un train épicycloïdal « assembleur », qui réunit les puissances en sortie de mécanisme. L'élément de contrôle est un variateur.More specifically, it relates to an infinitely variable power derivation transmission comprising at least one planetary gear train, a reduction stage and two electric machines, the various constituent elements of this transmission being distributed over two parallel power channels connecting the heat engine of a vehicle at the wheels thereof. Such a transmission can be based on three principles, or modes, of known power derivation. According to the first mode, known as “with coupled input”, the transmission comprises a pair of power bypass gears which derives the power at the input of the mechanism, and a planetary gear train “assembler”, which gathers the powers at the output of the mechanism. . The control element is a dimmer.
Dans les transmissions à dérivation de puissance dites « à sortie couplée », on a par exemple un train planétaire diviseur de puissance à l'entrée du mécanisme et un couple de pignons rassembleur de puissance en sortie du mécanisme, l'élément de contrôle étant toujours un variateur. Enfin, dans les transmissions à dérivation de puissance dites « à deux points d'adaptation », un premier train épicycloïdal diviseur de puissance peut être placé en entrée de boîte, tandis qu'un second train épicycloïdαl rαssembleur de puissance est disposé en sortie de boîte, l'élément de contrôle étant toujours un variateur.In so-called “coupled output” power bypass transmissions, there is for example a planetary power divider train at the input of the mechanism and a couple of power-gathering pinions at the output of the mechanism, the control element always being a variator. Finally, in so-called “two-point adaptation” power bypass transmissions, a first planetary power divider train can be placed at the input of the gearbox, while a second train epicycloidal power assembly is arranged at the outlet of the gearbox, the control element always being a variator.
En particulier, les transmissions infiniment variables (Infinitively Variable transmission ou IN.T) peuvent utiliser l'un quelconque de ces trois principes de fonctionnement.In particular, Infinitively Variable transmission (IN.T) can use any of these three operating principles.
On connaît à ce jour un type de transmission infiniment variable basé sur le second de ces trois principes (« sortie couplée »). Toutefois, il s'agit d'une transmission utilisable exclusivement sur un « véhicule hybride », comportant, outre un moteur thermique et une batterie, deux machines électriques constituant un variateur électrique.To date, an infinitely variable type of transmission is known based on the second of these three principles (“coupled output”). However, it is a transmission usable exclusively on a "hybrid vehicle", comprising, in addition to a heat engine and a battery, two electric machines constituting an electric variator.
Dans cette transmission connue, une des machines électriques est reliée directement au planétaire du train épicycloïdal, le moteur thermique est relié directement au porte satellites du train épicycloïdal, et la seconde machine électrique attaque la couronne du train épicycloïdal. La sortie du mouvement s'effectue par cette dernière vers les roues après démultiplication.In this known transmission, one of the electric machines is connected directly to the planet wheel of the planetary gear train, the heat engine is connected directly to the planet carrier of the planetary gear train, and the second electric machine drives the crown of the planetary gear train. The movement is exited by the latter towards the wheels after reduction.
Comme indiqué précédemment une telle architecture est limitée exclusivement au domaine du véhicule hybride, car elle ne peut en aucun cas remplir le cahier des charges d'une transmission automatique à rapports discrets, d'une boîte de vitesses manuelle, ou encore d'une transmission continûment variable sans motorisation hybride, principalement en raison du dimensionnement important de la machine électrique et des batteries nécessaires pour assurer les performances du véhicule.As indicated previously, such an architecture is limited exclusively to the field of the hybrid vehicle, since it cannot in any case fulfill the specifications of an automatic transmission with discrete reports, of a manual gearbox, or of a transmission. continuously variable without hybrid motorization, mainly due to the large sizing of the electric machine and the batteries necessary to ensure the performance of the vehicle.
Pour remédier à cet inconvénient, la présente invention propose une transmission basée sur ie principe de la dérivation de puissance, et applicable aussi bien sur un véhicule classique que sur un véhicule hybride, tout en respectant les performances habituelles des véhicules classiques. Elle prévoit dans ce but que la première voie contienne les deux machines électriques montées en série, que la seconde voie regroupe les autres éléments de la transmission, et en ce que cette transmission contienne au moins deux étages de réduction distincts. Grâce à l'invention, un véhicule hybride conserve ses performances, même quand ses batteries sont vides.To overcome this drawback, the present invention provides a transmission based on the principle of power derivation, and applicable both on a conventional vehicle than on a hybrid vehicle, while respecting the usual performance of conventional vehicles. It provides for this purpose that the first channel contains the two electrical machines connected in series, that the second channel includes the other elements of the transmission, and that this transmission contains at least two distinct reduction stages. Thanks to the invention, a hybrid vehicle retains its performance, even when its batteries are empty.
Un autre objectif de l'invention est de proposer une transmission infiniment variable à dérivation de puissance pouvant disposer, Soit d'une entrée couplée, soit d'une sortie couplée, soit de deux points d'adaptation. Les mesures proposées facilitent en outre la définition technique de la transmission en fonction des différentes applications envisagées. Ainsi, le développement d'une puissance déterminée, l'usage d'une ou plusieurs sources de puissance, l'obtention de performances spécifiques, pourront être assurés en réalisant de façon appropriée les connexions entre les différents composants de la transmission, les sources d'énergie et les roues. La première voie de puissance de cette transmission peut ainsi être reliée à un élément de stockage d'énergie électrique, ou à un générateur d'énergie électrique.Another objective of the invention is to propose an infinitely variable power derivation transmission which can have either a coupled input or a coupled output, or two adaptation points. The proposed measures also facilitate the technical definition of transmission according to the different applications envisaged. Thus, the development of a determined power, the use of one or more power sources, the obtaining of specific performances, can be ensured by making appropriate connections between the various components of the transmission, the sources of and the wheels. The first power channel of this transmission can thus be connected to an electrical energy storage element, or to an electrical energy generator.
Par ailleurs, deux étages de réduction peuvent être disposés de part et d'autre d'un train épicycloïdal, de part et d'autre de deux trains épiclyoïdaux, ou encore entre deux trains épicycloïdaux.Furthermore, two reduction stages can be arranged on either side of an epicyclic train, on either side of two epiclyoid trains, or even between two epicyclic trains.
D'autres caractéristiques et avantages de la présente invention apparaîtront clairement à la lecture de la description suivante de modes de réalisations particuliers de celle-ci, en se reportant aux dessins annexés, sur lesquels :Other characteristics and advantages of the present invention will become clear on reading the following description of particular embodiments thereof, with reference to the appended drawings, in which:
- la figure 1 illustre l'art antérieur, - les figures 2 à 15 sont dès schémas fonctionnels simplifiés correspondant à différents modes de réalisation de l'invention, etFIG. 1 illustrates the prior art, FIGS. 2 to 15 are from simplified functional diagrams corresponding to different embodiments of the invention, and
- les figures 16 à 18 décrivent l'architecture de trois modes de réalisation préférés. Selon l'architecture connue illustrée par la figure 1, le moteur thermique 1 est lié au porte satellite 15 du train épicycloïdal 8. Une première machine électrique 3a est directement liée au planétaire 12 du train 8, et une deuxième machine électrique 3b est directement liée à la couronne 18 du train 8. Enfin, les roues 2 sont également reliées à la couronne 18, mais par l'intermédiaire d'un réducteur 19, 20.- Figures 16 to 18 describe the architecture of three preferred embodiments. According to the known architecture illustrated in FIG. 1, the heat engine 1 is linked to the planet carrier 15 of the planetary gear train 8. A first electric machine 3a is directly linked to the sun gear 12 of the train 8, and a second electric machine 3b is directly linked to the crown 18 of the train 8. Finally, the wheels 2 are also connected to the crown 18, but via a reduction gear 19, 20.
Cette architecture ne présente donc qu'un seul réducteur, qui est disposé entre les roues et la couronne 8 tu train. Comme indiqué précédemment, ce type d'architecture conduit obligatoirement à surdimensionner les machines électriques. La transmission de la figure 2, conforma à l'invention, est à entrée couplée. Elle se compose d'un train épicycloïdal 8, de quatre étages de réduction 4, 5, 6, 7, et de deux machines électriques constituant ensemble un variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 4. Les roues 2 sont connectées à l'étage de réduction 6. Une première machine électrique du variateur 3 est relié à l'étage de réduction 5, et une seconde machine électrique du variateur est liée à l'étage de réduction 7. Enfin, les quatre étages de réduction 4, 5, 6 et 7, sont connectés au train épicycloïdal 8. Enfin, la première voie est reliée à un élément de stockage d'énergie électrique ou à un générateur d'énergie électrique non représentés. La transmission de la figure 3„ conforme a i'invention, est du type à sortie couplée. Elle est composée d'un train épicycloïdal 8, de quatre étages de réduction 4, 5, 6, 7, et de deux machines électriques constituant ensemble un variateur 3. Le moteur thermique est connecté à l'étage de réduction 6. Les roues sont connectées à l'étage de réduction 4. Une première machine électrique du variateur 3 est reliée à l'étage de réduction 5. Une seconde machine électrique du variateur 3 est reliée à l'étage de réduction 7. Enfin, les étages de réduction 4, 5, 6 et 7 sont connectés au train épicycloïdal 8.This architecture therefore has only one reducer, which is disposed between the wheels and the crown 8 you train. As indicated above, this type of architecture necessarily leads to oversizing of electrical machines. The transmission of Figure 2, according to the invention, is coupled input. It consists of a planetary gear train 8, four reduction stages 4, 5, 6, 7, and two electric machines together constituting a variator 3. The heat engine 1 is connected to the reduction stage 4. The wheels 2 are connected to the reduction stage 6. A first electric machine of the variator 3 is connected to the reduction stage 5, and a second electric machine of the variator is linked to the reduction stage 7. Finally, the four stages reduction 4, 5, 6 and 7, are connected to the planetary gear train 8. Finally, the first channel is connected to an electric energy storage element or to an electric energy generator not shown. The transmission of Figure 3 „according to the invention, is of the coupled output type. It is composed of an epicyclic train 8, four reduction stages 4, 5, 6, 7, and two electric machines constituting together a variator 3. The heat engine is connected to the reduction stage 6. The wheels are connected to the reduction stage 4. A first electric machine of the variator 3 is connected to the reduction stage 5. A second machine the variator 3 is connected to the reduction stage 7. Finally, the reduction stages 4, 5, 6 and 7 are connected to the planetary gear train 8.
Ainsi Selon les modes de réalisation des figures 2 et 3, on a deux étages de réduction disposés de par et d'autre d'un train épicycloïdal.Thus, according to the embodiments of FIGS. 2 and 3, there are two reduction stages arranged on either side of an epicyclic train.
La transmission de la figure 4 également conforme à l'invention, est du type à deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de quatre étages de réduction 4, 5, 6 et 7, et de deux machines électriques constituant ensemble un variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 4. Les roues 2 sont connectées à l'organe de réduction 7. Une première machine électrique du variateur 3 est reliée à l'étage de réduction 5. Une Seconde machine électrique du variateur 3 est connectée à l'étage de réduction 6. Les étages de réduction 4, 5 et 6 sont connectés au train épicycloïdal 8. Les étages de réduction 5, 6 et 7 sont connectés au train épicycloïdal 9.The transmission of Figure 4 also according to the invention is of the type with two adaptation points. It is composed of two planetary gear trains 8 and 9, four reduction stages 4, 5, 6 and 7, and two electric machines together constituting a variator 3. The heat engine 1 is connected to the reduction stage 4. The wheels 2 are connected to the reduction member 7. A first electric machine of the variator 3 is connected to the reduction stage 5. A second electric machine of the variator 3 is connected to the reduction stage 6. The reduction stages 4, 5 and 6 are connected to the planetary gear 8. The reduction stages 5, 6 and 7 are connected to the planetary gear 9.
La transmission de la figure 5, également conforme à l'invention, est basée sur le principe de dérivation de puissance deux points d'adaptation. Elle est composée de 2 trains épicycloïdaux 8 et 9, de quatre étages de réduction 4, 5, 6, 7 et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 4. Les roues 2 sont connectées à l'étage de réduction 6. Une première machine électrique du variateur 3est reliée à l'étage de réduction 5, et une seconde machine électrique du variateur 3 est reliée à l'étage de réduction 7. Les étages de réduction 4, 6 et 7 sont connectés au train épicycloïdal (8). Les étages de réduction 5, 6 et 7 Sont connectés au train épicycloïdal 9.The transmission of Figure 5, also according to the invention, is based on the principle of power derivation two adaptation points. It is made up of 2 planetary gear trains 8 and 9, four reduction stages 4, 5, 6, 7 and two electric machines together constituting the variator 3. The heat engine 1 is connected to the reduction stage 4. The wheels 2 are connected to the reduction stage 6. A first electric machine of the variator 3 is connected to the reduction stage 5, and a second electric machine of the variator 3 is connected to the reduction stage 7. The reduction stages 4, 6 and 7 are connected to the planetary gear (8). The reduction stages 5, 6 and 7 are connected to the planetary gear train 9.
La figure 6, également conforme à l'invention, est basée sur le principe de dérivation de puissance à deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de quatre étages de réductionFigure 6, also according to the invention, is based on the principle of power derivation at two adaptation points. It is composed of two planetary trains 8 and 9, four reduction stages
4, 5, 6, 7, et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 7. Les roues 2 sont connectées à l'étage de réduction 5. Une première machine électrique du variateur 3 est reliée à l'étage de réduction 4. Une seconde machine électrique du variateur 3 est reliée à l'étage de réduction 6. Les étages de réduction 4, 5 et 7 sont connectés au train épicycloïdal 8. Les étages de réduction 5, 6 et 7 sont connectés au train épicycloïdal 9.4, 5, 6, 7, and two electric machines together constituting the variator 3. The heat engine 1 is connected to the reduction stage 7. The wheels 2 are connected to the reduction stage 5. A first electric machine of the speed controller 3 is connected to the reduction stage 4. A second electric machine of the speed controller 3 is connected to the reduction stage 6. The reduction stages 4, 5 and 7 are connected to the planetary gear train 8. The reduction stages 5, 6 and 7 are connected to the planetary gear train 9.
Ainsi, selon les modes de réalisation de l'invention des figures 4, 5 et 6, on a deux étages de réduction disposés de part et d'autre de deux trains épicycloïdauxThus, according to the embodiments of the invention of FIGS. 4, 5 and 6, there are two reduction stages arranged on either side of two epicyclic trains
La transmission de la figure 7, conforme à l'invention, est basée sur le principe de dérivation de puissance deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de cinq étages de réduction 4,The transmission of Figure 7, according to the invention, is based on the principle of power derivation two adaptation points. It is composed of two planetary trains 8 and 9, five reduction stages 4,
5, 6, 7, 7a et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 4.5, 6, 7, 7a and two electrical machines together constituting the variator 3. The heat engine 1 is connected to the reduction stage 4.
Les roues 2 sont connectées à l'étage de réduction 7. Une première machine électrique du variateur 3 est reliée à l'étage de réduction 7a. Une seconde machine électrique du variateur 3 est reliée aux étages de réduction 5 et 6. Les étages de réduction 4, 5 et 7a sont connectés au train épicycloïdal 8. Les étages de réduction 6, 7 et 7a sont connectés au train épicycloïdal 9.The wheels 2 are connected to the reduction stage 7. A first electrical machine of the variator 3 is connected to the reduction stage 7a. A second electric machine of the variator 3 is connected to the reduction stages 5 and 6. The reduction stages 4, 5 and 7a are connected to the planetary gear train 8. The reduction stages 6, 7 and 7a are connected to the planetary gear train 9.
La transmission de la figure 8, conforme à l'invention, est basée sur le principe de dérivation de puissance à deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de cinq étages de réduction 4, 5, 6, 7, 7a et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 4. Les roues 2 sont connectées aux étages de réduction 5 et 6. Une première machine électrique du variateur 3 est reliée à l'étage de réduction 7. Une seconde machine électrique du variateur 3 est reliée à l'étage de réduction 7a. Les étages de réduction 4, 5 et 7a sont connectés au train épicycloïdal 9. Les étages de réduction 6, 7 et 7a sont connectés au train épicycloïdal 10.The transmission of Figure 8, according to the invention, is based on the principle of power derivation at two adaptation points. She is composed of two planetary gear trains 8 and 9, five reduction stages 4, 5, 6, 7, 7a and two electric machines together constituting the variator 3. The heat engine 1 is connected to the reduction stage 4. The wheels 2 are connected to the reduction stages 5 and 6. A first electric machine of the variator 3 is connected to the reduction stage 7. A second electric machine of the variator 3 is connected to the reduction stage 7a. The reduction stages 4, 5 and 7a are connected to the planetary gear 9. The reduction stages 6, 7 and 7a are connected to the planetary gear 10.
La transmission de la figure 9, également conforme à l'invention, est basée sur le principe de dérivation de puissance deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de cinq étages de réduction 4, 5, 6, 7, 7a et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté aux étages de réduction 5 et 6. Les roues 2 sont connectées à l'étage de réduction 7a. Une première machine électrique du variateur 3 est reliée à l'étage de réductionThe transmission of Figure 9, also according to the invention, is based on the principle of power derivation two adaptation points. It is made up of two planetary gear trains 8 and 9, five reduction stages 4, 5, 6, 7, 7a and two electric machines which together constitute the variator 3. The heat engine 1 is connected to reduction stages 5 and 6. The wheels 2 are connected to the reduction stage 7a. A first electric machine of the variator 3 is connected to the reduction stage
4. Une seconde machine électrique du variateur 3 est reliée à l'étage de réduction 7. Les étages de réduction 4, 5 et 7a sont connectés au train épicycloïdal 8. Les étages de réduction 6, 7 et 7a sont connectés au train épicycloïdal 9. La transmission de la figure 10, conforme à l'invention, est basée sur le principe de dérivation de puissance à deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de cinq étages de réduction 4,4. A second electrical machine of the variator 3 is connected to the reduction stage 7. The reduction stages 4, 5 and 7a are connected to the planetary gear train 8. The reduction stages 6, 7 and 7a are connected to the planetary gear train 9 The transmission of FIG. 10, according to the invention, is based on the principle of power derivation at two adaptation points. It is composed of two planetary trains 8 and 9, five reduction stages 4,
5, 6, 7, 7a et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 7a. Les roues 2 sont connecîéeS à i'etage de réduction 4. Une première machine électrique du variateur 3 est reliée aux étages de réduction 5 et 6. Une première machine électrique du variateur 3 est reliée à l'étage de réduction 7. Les étages de réduction 4, 5 et 7α sont connectés au train épicycloïdal 8. Les étages de réduction 6, 7 et 7a sont connectés au train épicycloïdal 9.5, 6, 7, 7a and two electric machines together constituting the variator 3. The heat engine 1 is connected to the reduction stage 7a. The wheels 2 are connected to the reduction stage 4. A first electric machine of the variator 3 is connected to the reduction stages 5 and 6. A first electric machine of the variator 3 is connected to the reduction stage 7. The reduction stages 4, 5 and 7α are connected to the planetary gear 8. The reduction stages 6, 7 and 7a are connected to the planetary gear 9.
La transmission de la figure 11, conforme à l'invention, est basée sur le principe de dérivation de puissance deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de six étages de réduction 4, 5, 6, 7, 7a, 7b, et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 4. Les roues 2 sont connectées à l'étage de réduction 7. Une première machine électrique du variateur 3 est reliée aux étages de réduction 5 et 6. Une seconde machine électrique du variateur 3 est reliée aux étages de réduction 7a et 7b. Les étages de réduction 4, 5 et 7b sont connectés au train épicycloïdal 10. Les étages de réduction 6, 7 et 7a sont connectés au train épicycloïdal 9.The transmission of Figure 11, according to the invention, is based on the principle of power derivation two adaptation points. It is composed of two planetary gear trains 8 and 9, six reduction stages 4, 5, 6, 7, 7a, 7b, and two electric machines together constituting the variator 3. The heat engine 1 is connected to the stage of reduction 4. The wheels 2 are connected to the reduction stage 7. A first electric machine of the variator 3 is connected to the reduction stages 5 and 6. A second electric machine of the variator 3 is connected to the reduction stages 7a and 7b. The reduction stages 4, 5 and 7b are connected to the planetary gear 10. The reduction stages 6, 7 and 7a are connected to the planetary gear 9.
La transmission de la figure 12, conforme à l'invention, est basée sur le principe de dérivation de puissance à deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de six étages de réduction 4, 5, 6, 7, 7a, 7b, et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 4. Les roues 2 sont connectées aux étages de réduction 5 et 6. Une première machine électrique du variateur 3 est reliée à l'étage de réduction 7. Une seconde machine électrique du variateur 3 est reliée aux étages de réduction 7a et 7b. Les étages de réduction 4, 5 et 7b sont connectés au train épicycloïdal 8. Les étages de réduction 6, 7 et 7a sont connectés au train épicycloïdal 9. La transmission de la figure 13, conforme à l'invention, est également basée sur le principe de dérivation de puissance à deux points d'adaptation. Elle est composée de deux trains épicycloïdaux 8 et 9, de six étαges de réduction 4, 5, 6, 7, 7a, 7b, et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté aux étages de réduction 7a et 7b. Les roues 2 sont connectées à l'étage de réduction 7. Une première machine électrique du variateur 3 est reliée aux étages de réduction 5 et 6. Une seconde machine électrique du variateur 3 est reliée à l'étage de réduction 4. Les étages de réduction 4, 5 et 7b, sont connectés au train épicycloïdal 9. Les étages de réduction 6, 7 et 7a, sont connectés au train épicycloïdal 9.The transmission of Figure 12, according to the invention, is based on the principle of power derivation at two adaptation points. It is composed of two planetary gear trains 8 and 9, six reduction stages 4, 5, 6, 7, 7a, 7b, and two electric machines together constituting the variator 3. The heat engine 1 is connected to the stage of reduction 4. The wheels 2 are connected to the reduction stages 5 and 6. A first electric machine of the variator 3 is connected to the reduction stage 7. A second electric machine of the variator 3 is connected to the reduction stages 7a and 7b. The reduction stages 4, 5 and 7b are connected to the planetary gear 8. The reduction stages 6, 7 and 7a are connected to the planetary gear 9. The transmission of FIG. 13, according to the invention, is also based on the power derivation principle at two adaptation points. It is composed of two planetary trains 8 and 9, six reduction stages 4, 5, 6, 7, 7a, 7b, and two electric machines together constituting the variator 3. The heat engine 1 is connected to the reduction stages 7a and 7b. The wheels 2 are connected to the reduction stage 7. A first electric machine of the variator 3 is connected to the reduction stages 5 and 6. A second electric machine of the variator 3 is connected to the reduction stage 4. The stages of reduction 4, 5 and 7b are connected to the planetary gear 9. The reduction stages 6, 7 and 7a are connected to the planetary gear 9.
La transmission de la figure 14, également conforme à l'invention, est basée sur le principe de dérivation de puissance sortie couplée. Elle est composée de deux trains épicycloïdaux 8 et 9, de six étages de réduction 4, 5, 6, 7, 7a, 7b, et de deux machines électriques constituant ensemble le variateur 3. Le moteur thermique 1 est connecté à l'étage de réduction 4. Les roues 2 sont connectées aux étages de réduction 7 et 7a. Une première machine électrique du variateur 3 est reliée aux étages de réduction 7a et 7b. Une seconde machine électrique du variateur 3 est reliée à l'étage de réduction 6. Les étages de réduction 4, 5 et 7b sont connectés au train épicycloïdal 8. Les étages de réduction 5, 6 et 7 sont connectés au train épicycloïdal 9. La transmission conforme à l'invention de la figure 15, également conforme à l'invention, est basée sur le principe de dérivation de puissance à sortie couplée. Elle est composée de deux trains épicycloïdaux 8 et 9, de six étages de réduction 4, 5, 6, 7, 7a, 7b, et de deux machines électriques constituants ensemble le variateur 3. Le moteur thermique 1 est connecté aux étages de réduction 7a et 7b. Les roues 2 sont connectées à l'étage de réduction 6. Une première machine électrique du variateur 3, est reliée à l'étage de réduction 4. Une seconde machine électrique du variateur 3 est reliée aux étages de réduction 7 et 7a. Les étages de réduction 4, 5 et 7b sont connectés au train épicycloïdal 8. Les étages de réduction 5, 6 et 7 sont connectés au train épicycloïdal 9.The transmission of FIG. 14, also according to the invention, is based on the principle of derivation of coupled output power. It is composed of two planetary gear trains 8 and 9, six reduction stages 4, 5, 6, 7, 7a, 7b, and two electric machines which together constitute the variator 3. The heat engine 1 is connected to the stage of reduction 4. The wheels 2 are connected to the reduction stages 7 and 7a. A first electric machine of the variator 3 is connected to the reduction stages 7a and 7b. A second electric machine of the variator 3 is connected to the reduction stage 6. The reduction stages 4, 5 and 7b are connected to the epicyclic train 8. The reduction stages 5, 6 and 7 are connected to the epicyclic train 9. The transmission according to the invention of FIG. 15, also according to the invention, is based on the principle of power derivation with coupled output. It is composed of two planetary gear trains 8 and 9, six reduction stages 4, 5, 6, 7, 7a, 7b, and two electric machines which together constitute the variator 3. The heat engine 1 is connected to the reduction stages 7a and 7b. The wheels 2 are connected to the reduction stage 6. A first electric machine of the variator 3 is connected to the reduction stage 4. A second electric machine of the variator 3 is connected to reduction stages 7 and 7a. The reduction stages 4, 5 and 7b are connected to the planetary gear 8. The reduction stages 5, 6 and 7 are connected to the planetary gear 9.
Ainsi, selon les modes de réalisation de l'invention illustrés par les figures 7 à 15, on a deux étages de réduction disposés entre les deux trains épicycloïdaux.Thus, according to the embodiments of the invention illustrated in Figures 7 to 15, there are two reduction stages arranged between the two epicyclic trains.
Sur la figure 16, on a représenté une architecture de transmission conforme à l'invention, du type à entrée couplée, car une machine électrique 3a et le moteur thermique 1 attaquent le même arbre 12, lié au planétaire du train épicycloïdal 8. Cette architecture correspond au schéma fonctionnel de la figure 2. La seconde machine électrique 3b est reliée par un réducteur 16, 17, à la couronne 18 du train 8. La sortie de mouvement par les roues 2 est reliée au porte-satellites 15, par l'intermédiaire du réducteur 19, 20. Enfin, le moteur thermique 1 est relié au planétaire 12 par l'intermédiaire du réducteur 10, 11. En résumé, la transmission de la figure 16 comporte quatre étages de réduction, disposés respectivement entre le moteur thermique et la deuxième voie de puissance (constituée par le train 8), entre une première machine électrique 3a et cette seconde voie, entre la seconde machine électrique 3b et cette même seconde voie, et entre cette seconde voie et les roues 2.FIG. 16 shows a transmission architecture according to the invention, of the type with coupled input, because an electric machine 3a and the heat engine 1 attack the same shaft 12, linked to the planetary of the planetary gear train 8. This architecture corresponds to the functional diagram of FIG. 2. The second electric machine 3b is connected by a reduction gear 16, 17, to the crown 18 of the train 8. The movement output by the wheels 2 is connected to the planet carrier 15, by the intermediate of the reduction gear 19, 20. Finally, the heat engine 1 is connected to the sun gear 12 by means of the reduction gear 10, 11. In summary, the transmission of FIG. 16 has four reduction stages, arranged respectively between the heat engine and the second power track (constituted by the train 8), between a first electric machine 3a and this second track, between the second electric machine 3b and this same second track, and between this second track and wheels 2.
Les réducteurs, ou étages de réduction, apparaissant sur la figure 16 sont des simples descentes d'engrenages constitués par une paire de pignons. Toutefois, sans sortir du cadre de l'invention, ils peuvent aussi bien être constitués par trois pignons successifs (descentes triples), ou des liaisons soupies, du type chaîne ou courroie.The reducers, or reduction stages, appearing in FIG. 16 are simple descents of gears constituted by a pair of pinions. However, without departing from the scope of the invention, they may as well be constituted by three successive pinions (triple descents), or soupy connections, of the chain or belt type.
La figure 17 se distingue de la figure 16 en ce que la première machine électrique 3a est reliée à l'entrée 12 du train 8, et non au porte- sαtellites 15. Cette architecture correspond au schéma fonctionnel de la figure 3. Par ailleurs, la disposition des quatre réducteurs, correspond à celle de la figure 16.Figure 17 differs from Figure 16 in that the first electric machine 3a is connected to the input 12 of the train 8, and not to the carrier sαtellites 15. This architecture corresponds to the functional diagram of FIG. 3. Furthermore, the arrangement of the four reducers corresponds to that of FIG. 16.
Ainsi conformément aux dispositions illustrées par les figures 16 et 17, la transmission de l'invention peut comporter quatre étages de réduction, disposés respectivement entre le moteur thermique et la deuxième voie, entre la deuxième voie et une première machine électrique, entre la deuxième voie et une seconde machine électrique, entre la deuxième voie et les roues. Sur la figure 18, on a deux trains épicycloïdaux 8, 9. Le moteur thermique 1 entraîne par l'intermédiaire d'un réducteur 10, 11, la couronne 18 du premier train 8. La première machine électrique 3a est liée, par l'intermédiaire d'un réducteur 16, 17, à la couronne 18. Celle-ci est reliée, par l'intermédiaire de deux réducteurs successifs 19, 20 et 21, 22, au porte- satellites 25 du second train 9. Le porte-satellites 15 du premier train 8 est relié par trois réducteurs successif, 13, 14 ; 26, 27 ; 28, 29, à la seconde machine électrique 3b et au planétaire 30 du second train. Enfin, les roues 2 sont reliées à la couronne 33 du second train 9 par l'intermédiaire d'un réducteur 31, 32. Ainsi, sans sortir du cadre de l'invention, on peut encore avoir les disposition suivantes : les deux trains reliés par deux liaisons mécaniques directes, les étages de réduction sont disposés autour des deux trains, ou au moins un étage de réduction disposé entre les deux trains.Thus, in accordance with the arrangements illustrated in FIGS. 16 and 17, the transmission of the invention can comprise four reduction stages, arranged respectively between the heat engine and the second path, between the second path and a first electric machine, between the second path. and a second electric machine, between the second track and the wheels. In FIG. 18, there are two planetary gear trains 8, 9. The heat engine 1 drives, via a reduction gear 10, 11, the crown 18 of the first train 8. The first electric machine 3a is linked, by the through a reduction gear 16, 17, to the crown 18. The latter is connected, by means of two successive reducers 19, 20 and 21, 22, to the planet carrier 25 of the second train 9. The planet carrier 15 of the first train 8 is connected by three successive reducers, 13, 14; 26, 27; 28, 29, to the second electric machine 3b and to the sun gear 30 of the second train. Finally, the wheels 2 are connected to the crown 33 of the second train 9 by means of a reduction gear 31, 32. Thus, without departing from the scope of the invention, it is also possible to have the following arrangements: the two connected trains by two direct mechanical connections, the reduction stages are arranged around the two trains, or at least one reduction stage arranged between the two trains.
Enfin, dans tous ses modes de réalisation, la première voie est avantageusement reliée à un élément de stockage d'énergie électrique ou à un générateur d'énerg e électrique non représentés sur les schémas. Finally, in all of its embodiments, the first channel is advantageously connected to an electric energy storage element or to an electric energy generator not shown in the diagrams.

Claims

REVENDICATIONS
[1] Transmission infiniment variable à dérivation de puissance comportant au moins un train épicycloïdal (8), un étage de réduction (4 ; 10, 11) et deux machines électriques (3 ; 3a, 3b), les différents éléments constitutifs de cette transmission étant répartis sur deux voies de puissance parallèles reliant le moteur thermique (1) d'un véhicule aux roues (2) de celui-ci, caractérisée en ce que la première voie contient les deux machines électriques montées en série, en ce que la seconde voie regroupe les autres éléments de la transmission, et en ce que cette transmission contient au moins un second étage de réduction (5 ; 13, 14), distinct du premier.[1] Infinitely variable transmission with power bypass comprising at least one planetary gear train (8), a reduction stage (4; 10, 11) and two electrical machines (3; 3a, 3b), the different constituent elements of this transmission being distributed over two parallel power paths connecting the thermal engine (1) of a vehicle to the wheels (2) thereof, characterized in that the first path contains the two electrical machines connected in series, in that the second channel brings together the other elements of the transmission, and in that this transmission contains at least a second reduction stage (5; 13, 14), distinct from the first.
[2] Transmission selon la revendication 1, caractérisée en ce que la première voie est reliée à un élément de stockage d'énergie électrique.[2] Transmission according to claim 1, characterized in that the first channel is connected to an electrical energy storage element.
[3] Transmission selon la revendication 1, caractérisée en ce que la première voie est reliée à un générateur d'énergie électrique.[3] Transmission according to claim 1, characterized in that the first channel is connected to an electrical energy generator.
[4] Transmission selon la revendication 1, 2 ou 3, caractérisée en ce que deux étages de réduction (4 ; 5 ; 6 ; 7 ; 10, 11 ; 13, 14 ; 16, 17 ; 19, 20) Sont disposés de part et d'autre d'un train épicycloïdal (8).[4] Transmission according to claim 1, 2 or 3, characterized in that two reduction stages (4; 5; 6; 7; 10, 11; 13, 14; 16, 17; 19, 20) are arranged on either side and the other of an epicyclic gear train (8).
[5] Transmission selon la revendication 1, 2 ou 3, caractérisée en ce que deux étages de réduction (4 ; 5 ; 6 ; 7 ; 7a 10, 11 ; 13, 14 ; 16, 17 ; 19, 20 ; 21, 22) sont disposés de part et d'autre de deux trains épicycloïdaux (8, 9).[5] Transmission according to claim 1, 2 or 3, characterized in that two reduction stages (4; 5; 6; 7; 7a 10, 11; 13, 14; 16, 17; 19, 20; 21, 22) are arranged on either side of two epicyclic trains (8, 9).
[6] Transmission selon la revendication 1, 2 ou 3, caractérisé en ce que deux étages de réduction (4 ; 5 ; 6 ; 7 ; 7a ; 10, 11 ; 13, 14 ; 16, 17 ; 19,[6] Transmission according to claim 1, 2 or 3, characterized in that two reduction stages (4; 5; 6; 7; 7a; 10, 11; 13, 14; 16, 17; 19,
20 ; 21, 22) sont disposés entre deux trains épicycloïdaux (8, 9).20; 21, 22) are arranged between two epicyclic trains (8, 9).
[7] Transmission selon la revendication 4, caractérisée en ce qu'elle comporte quatre étages de réduction ( 10, 11 ; 13, 14 ; 16, 17 ; 19, 20) de réduction, disposés entre le moteur thermique et la deuxième voie, entre la deuxième voie et une première machine électrique, entre la deuxième voie et une seconde machine électrique, entre la deuxième voie et les roues.[7] Transmission according to claim 4, characterized in that it comprises four reduction stages (10, 11; 13, 14; 16, 17; 19, 20), arranged between the heat engine and the second channel, between the second track and a first electric machine, between the second track and a second electric machine, between the second track and the wheels.
[8] Transmission selon la revendication 7, caractérisée en ce que la première machine électrique (3a) est reliée au porte-satellites (15) d'un train (8).[8] Transmission according to claim 7, characterized in that the first electric machine (3a) is connected to the planet carrier (15) of a train (8).
[9] Transmission selon la revendication 7, caractérisée en ce que la première machine électrique (3a) est reliée à l'entrée (12) d'un train[9] Transmission according to claim 7, characterized in that the first electrical machine (3a) is connected to the input (12) of a train
(8). (8).
[10] Transmission selon la revendication 5, caractérisée en ce que les deux trains (8, 9) sont reliés par deux liaisons mécaniques directes.[10] Transmission according to claim 5, characterized in that the two trains (8, 9) are connected by two direct mechanical connections.
[11] Transmission selon la revendication 10, caractérisée en ce que les étages de réduction (4 ; 5 ; 6 ; 7 ; 7a ; 10, 11 ; 13, 14 ; 16, 17 ; 19, 20 ; 21, 22 ; 31, 32) sont disposés autour des deux trains (8, 9). [12] Transmission selon la revendication 10, caractérisée en ce qu'elle présente au moins un étage de réduction disposé entre les deux trains (8, 9). [11] Transmission according to claim 10, characterized in that the reduction stages (4; 5; 6; 7; 7a; 10, 11; 13, 14; 16, 17; 19, 20; 21, 22; 31, 32) are arranged around the two trains (8, 9). [12] Transmission according to claim 10, characterized in that it has at least one reduction stage arranged between the two trains (8, 9).
EP01271508A 2000-12-18 2001-12-14 Infinitely variable transmission with power by-pass Withdrawn EP1346168A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0016526A FR2818346B1 (en) 2000-12-18 2000-12-18 INFINITELY VARIABLE POWER-DRIVEN TRANSMISSION
FR0016526 2000-12-18
PCT/FR2001/003996 WO2002050452A1 (en) 2000-12-18 2001-12-14 Infinitely variable transmission with power by-pass

Publications (1)

Publication Number Publication Date
EP1346168A1 true EP1346168A1 (en) 2003-09-24

Family

ID=8857820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01271508A Withdrawn EP1346168A1 (en) 2000-12-18 2001-12-14 Infinitely variable transmission with power by-pass

Country Status (3)

Country Link
EP (1) EP1346168A1 (en)
FR (1) FR2818346B1 (en)
WO (1) WO2002050452A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7044877B2 (en) 2003-04-21 2006-05-16 The Timken Company Two speed transmission with smooth power shift
FR2855107B1 (en) 2003-05-23 2006-06-16 Renault Sa METHOD AND DEVICE FOR CONTROLLING A MOTORPROOF GROUP IN TORQUE MODE WITH SEPARATE MECHANICAL AND ELECTRICAL CONTROLS
ES2313291T3 (en) * 2004-02-16 2009-03-01 Juan Ramon Goma Ayats CONTINUOUSLY VARIABLE TRANSMISSION.
FR2868995B1 (en) * 2004-04-20 2007-06-29 Renault Sas INFINITELY VARIABLE POWER-DERIVED TRANSMISSION WITH TWO OPERATING MODES FOR MOTOR VEHICLE
FR2917695A1 (en) 2007-06-20 2008-12-26 Renault Sas "SYSTEM FOR CONTROLLING AND CONTROLLING A TRANSMISSION FOR A MOTOR VEHICLE"
US11701957B1 (en) * 2022-05-05 2023-07-18 Ford Global Technologies, Llc Electric drive axle with first stage chain drive

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5655746A (en) * 1978-04-18 1981-05-16 Masaaki Yamashita Double internal planetary gear stepless speed change device by electric brake
HU188568B (en) * 1980-09-02 1986-04-28 Mucsi,Endre,Hu Drive for implements driven by several sources of energy first for vehicles
JP3214368B2 (en) * 1996-08-13 2001-10-02 トヨタ自動車株式会社 Power output device
US5730676A (en) * 1996-10-22 1998-03-24 General Motors Corporation Three-mode, input-split hybrid transmission
JPH1182649A (en) * 1997-09-16 1999-03-26 Honda Motor Co Ltd Continuously variable transmission

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0250452A1 *

Also Published As

Publication number Publication date
WO2002050452A1 (en) 2002-06-27
FR2818346A1 (en) 2002-06-21
FR2818346B1 (en) 2003-03-21

Similar Documents

Publication Publication Date Title
EP1453694B9 (en) Power transmission device with at least two planetary gear trains
EP1573228B1 (en) Infinitely variable transmission with power branching, with electric selector
FR2785236A1 (en) DRIVE, ESPECIALLY ELECTROMECHANICAL, PARTICULARLY FOR TRACKED VEHICLES
FR2787395A1 (en) "PARALLEL HYBRID" TRACTION DEVICE, PARTICULARLY FOR MOTOR VEHICLES
WO1996035063A1 (en) Continuously variable, high performance transmission system for an engine, particularly of a motor vehicle
EP1373001B1 (en) Infinitely variable power branching transmission with two operating modes
WO2002050452A1 (en) Infinitely variable transmission with power by-pass
EP1663688B1 (en) Infinitely-variable power-branching transmission with two operating modes, comprising three planetary trains
WO2010007291A1 (en) Hybrid gearbox with parallel shafts
FR2847321A1 (en) Infinitely variable transmission for vehicle, has composite train to connect engine to vehicle wheels, simple train to realize branching of power and another composite train to realize operation mode changing system
FR2834248A1 (en) Equipment for operating hybrid traction system in parallel, comprises internal combustion engine, gearbox and electrical machine which has a rotor within a moving stator/rotor within a fixed stator
FR2847015A1 (en) Infinitely variable mechanical power transmission with electric control, uses supplementary epicyclic train in series with one of the two parallel drive trains to increase the number of operating modes
EP2989352B1 (en) Drive train for hydraulic hybrid vehicle and hybrid vehicle
FR2847014A1 (en) Infinitely variable mechanical transmission with electric control, uses two parallel transmission paths with selective immobilization of gears to determine operating mode
EP1337412B1 (en) Dual-control hybrid engine-transmission unit for a vehicle
FR2800826A1 (en) Motor vehicle drive transmission has variator for power drive with epicyclic train forming cross shaft between wheels
FR3077537A1 (en) MOTOR POWERTRAIN FOR MOTOR VEHICLE WITH ELECTRIC OR HYBRID PROPULSION
FR2682444A1 (en) Automatic gear-change device with a torque converter and epicyclic gear train, which are not coaxial
FR3111591A1 (en) INFINITELY VARIABLE TRANSMISSION POWER DIVIDER AND CONTROL PROCEDURE
EP4094963A1 (en) Hybrid subassembly for driving a vehicle, hybrid engine unit and hybrid driving method
FR3141890A1 (en) Transmission device for electric vehicle with two speed ratios
FR3006250A1 (en) COUPLING OR DECOUPLING UNIT FOR MOTOR PROPELLER GROUP OF A MOTOR VEHICLE
EP4279308A1 (en) Hybrid drive assembly for a vehicle
WO2014195597A1 (en) Gearbox system for a motor vehicle
FR3135423A1 (en) MODULAR ELECTRIC TRAIN FOR MOTOR VEHICLE

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030617

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RBV Designated contracting states (corrected)

Designated state(s): DE ES GB IT

17Q First examination report despatched

Effective date: 20040609

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20040713