FR2966093A1 - Coupling device for coupling electric machine of transmission system of thermal-electric hybrid vehicle, has integrating unit to integrate parts of shaft and to allow passage of torque of reducer toward wheel associated with shaft - Google Patents

Coupling device for coupling electric machine of transmission system of thermal-electric hybrid vehicle, has integrating unit to integrate parts of shaft and to allow passage of torque of reducer toward wheel associated with shaft Download PDF

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Publication number
FR2966093A1
FR2966093A1 FR1058332A FR1058332A FR2966093A1 FR 2966093 A1 FR2966093 A1 FR 2966093A1 FR 1058332 A FR1058332 A FR 1058332A FR 1058332 A FR1058332 A FR 1058332A FR 2966093 A1 FR2966093 A1 FR 2966093A1
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France
Prior art keywords
shaft
securing means
electric
electric machine
transmission
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Pending
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FR1058332A
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French (fr)
Inventor
Thomas Kanounnikoff
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PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Priority to FR1058332A priority Critical patent/FR2966093A1/en
Publication of FR2966093A1 publication Critical patent/FR2966093A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • 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
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • 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
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • 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
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • 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
    • B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • 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

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The device has a transmission shaft (20) for connecting a reducer of an electric machine comprising electric traction and a thermal traction, to a wheel (24). The transmission shaft comprises two parts (20a, 20b, 22a, 22b), which freely rotate with respect to each other along an axis formed by the shaft. An integrating unit i.e. sleeve (48), is slid on the shaft to integrate the two parts and to allow the passage of torque of the reducer toward the wheel associated with the shaft. The integrating unit comprises a grooved interior surface. An independent claim is also included for a method for operating an interconnecting device of a shaft.

Description

DISPOSITIF DE COUPLAGE D'UN VEHICULE AUTOMOBILE ET PROCEDE DE FONCTIONNEMENT D'UN TEL DISPOSITIF DEVICE FOR COUPLING A MOTOR VEHICLE AND METHOD FOR OPERATING SUCH A DEVICE

La présente invention concerne un dispositif de couplage d'un véhicule automobile et son procédé de fonctionnement. Plus particulièrement, l'invention a pour objet un dispositif permettant d'accoupler ou de désaccoupler une machine électrique du système de transmission d'un véhicule hybride thermique-électrique. Dans les véhicules hybrides associant à la fois une motorisation électrique et thermique, la transmission de puissance fournie par la machine électrique s'effectue généralement au niveau des roues arrière, par l'intermédiaire d'un cardan, alors que, les roues avant sont entrainées par la machine thermique. Dans ces véhicules hybrides, il est nécessaire d'assurer une fonction dite de couplage de la motorisation électrique par rapport à la motorisation thermique, autrement dit d'accouplement ou de désaccouplement de la machine électrique afin d'éviter un régime critique de rotation de ladite machine électrique lors des phases de roulage en mode thermique. Il existe dans l'état de la technique, divers systèmes permettant d'assurer la fonction d'accouplement ou de désaccouplement de la machine électrique à un arbre de transmission de couple. Un premier document référencé DE10225873, présente une transmission arrière pour véhicule hybride, ladite transmission ayant pour particularité de pouvoir gérer la répartition des forces d'entrainement. Les deux roues arrière du véhicule sont chacune reliées à un embrayage, qui sont eux même reliés à un moteur électrique. Un deuxième document référencé GB538438, décrit un dispositif de transmission pouvant être implanté dans un véhicule hybride. Ce dispositif permet de transmettre une puissance aux roues arrière en implantant des embrayages sur chacun des arbres de transmission entre le moteur et les roues. Un troisième document référencé WO2007118082, décrit un dispositif de transmission arrière pour véhicule hybride. Ce dispositif comporte un motoréducteur pour chacune des roues arrière. Un élément apte à être débrayé, est également positionné entre les motoréducteurs et les roues. The present invention relates to a coupling device of a motor vehicle and its method of operation. More particularly, the invention relates to a device for coupling or uncoupling an electric machine of the transmission system of a hybrid electric-electric vehicle. In hybrid vehicles combining both an electric and thermal motor, the power transmission supplied by the electric machine is generally performed at the rear wheels, by means of a gimbal, while the front wheels are driven by the thermal machine. In these hybrid vehicles, it is necessary to provide a so-called coupling function of the electric motor with respect to the thermal motorization, in other words coupling or uncoupling of the electric machine in order to avoid a critical rotation speed of said motor. electric machine during the driving phases in thermal mode. There exist in the state of the art, various systems for ensuring the function of coupling or uncoupling of the electric machine to a torque transmission shaft. A first document referenced DE10225873, presents a rear transmission for hybrid vehicle, said transmission having the particularity of being able to manage the distribution of the driving forces. The two rear wheels of the vehicle are each connected to a clutch, which are themselves connected to an electric motor. A second document referenced GB538438, describes a transmission device that can be implanted in a hybrid vehicle. This device makes it possible to transmit power to the rear wheels by implanting clutches on each of the transmission shafts between the engine and the wheels. A third document referenced WO2007118082, describes a rear transmission device for a hybrid vehicle. This device comprises a geared motor for each of the rear wheels. An element capable of being disengaged is also positioned between the geared motors and the wheels.

Toutefois, dans l'état de la technique, la fonction de couplage de la machine électrique du système de transmission du véhicule, est placée à l'intérieur du réducteur de vitesse. La présence de cette fonction à l'intérieur du réducteur de vitesse génèrent énormément de perte mécanique du fait de frottements et du barbotage d'huile. Pour réduire les pertes mécaniques, il existe donc un besoin de placer un dispositif de couplage au niveau du différentiel du véhicule. Cependant, ces dispositifs de couplage ne peuvent être implantés au niveau du différentiel du véhicule du fait d'une part, du couple trop important qui entrainerait la casse desdits dispositifs et d'autre part du volume restreint disponible pour les mettre en place. En outre, les dispositifs décrits dans l'état de la technique sont assez complexes à mettre en oeuvre car ils nécessitent la mise en place d'une couronne femelle fixée sur un pignon du réducteur et d'une couronne crabot mâle apte à être translatée par une fourchette sur la couronne femelle. Ladite fourchette étant elle même actionnée par un moteur électrique. L'invention a pour but de répondre à ce besoin tout en remédiant aux inconvénients de l'état de la technique. Pour cela, l'invention propose un dispositif de couplage d'une machine électrique à un système de transmission d'un véhicule automobile. Ledit dispositif comporte un arbre de transmission, reliant un réducteur de la machine électrique à une roue. L'arbre de transmission comporte deux parties libre uniquement en rotation l'une par rapport à l'autre suivant un axe formé par ledit arbre. Le dispositif comporte en outre un manchon apte à coulisser sur l'arbre de transmission de sorte à solidariser les deux parties et permettre le passage du couple du réducteur vers la roue associée à l'arbre. A cet effet, l'invention a pour objet un dispositif de couplage d'une machine électrique d'un système de transmission d'un véhicule automobile comportant une traction électrique et une traction thermique, ledit dispositif comportant un arbre de transmission, reliant un réducteur de la machine électrique à une roue, caractérisé en ce que, l'arbre de transmission comporte une première partie et une deuxième partie libres uniquement en rotation l'une par rapport à l'autre suivant un axe formé par ledit arbre, et en ce qu'il comporte en outre, un moyen de solidarisation apte à coulisser sur l'arbre de transmission, de sorte à solidariser les deux parties et permettre le passage du couple du réducteur vers la roue associée à l'arbre de transmission. However, in the state of the art, the coupling function of the electric machine of the vehicle transmission system is placed inside the gearbox. The presence of this function inside the speed reducer generates a great deal of mechanical loss due to friction and oil sparging. To reduce the mechanical losses, there is therefore a need to place a coupling device at the level of the differential of the vehicle. However, these coupling devices can not be implanted at the level of the differential of the vehicle because of the excessive torque that causes the breaking of said devices and the limited volume available to put them in place. In addition, the devices described in the state of the art are quite complex to implement because they require the establishment of a female ring fixed on a gear of the gearbox and a male dog ring adapted to be translated by a fork on the female crown. Said fork being itself powered by an electric motor. The invention aims to meet this need while overcoming the disadvantages of the state of the art. For this, the invention proposes a device for coupling an electric machine to a transmission system of a motor vehicle. Said device comprises a transmission shaft, connecting a reducer of the electric machine to a wheel. The transmission shaft has two parts free only in rotation with respect to each other along an axis formed by said shaft. The device further comprises a sleeve slidable on the transmission shaft so as to secure the two parts and allow the passage of torque from the gearbox to the wheel associated with the shaft. For this purpose, the subject of the invention is a device for coupling an electric machine of a transmission system of a motor vehicle comprising an electric traction and a thermal traction, said device comprising a transmission shaft, connecting a reducer of the single-wheel electric machine, characterized in that the transmission shaft comprises a first part and a second part which are free to rotate relative to one another along an axis formed by said shaft, and in that it further comprises, a securing means adapted to slide on the transmission shaft, so as to secure the two parts and allow the passage of torque from the gearbox to the wheel associated with the transmission shaft.

L'invention comporte également l'une quelconque des caractéristiques suivantes : - le moyen de solidarisation comporte une surface intérieure cannelée ; - les extrémités sont cannelées configurées de sorte que lorsque le 10 moyen de solidarisation les recouvre, la première partie et la deuxième partie sont solidarisées et forment un arbre rigide apte à transmettre un couple issu de la machine électrique aux roues ; - le moyen de solidarisation est translaté sur l'arbre par l'intermédiaire d'un actionneur commandé par un calculateur de supervision du véhicule ; 15 - l'actionneur est pneumatique ; - l'actionneur est électromagnétique ; - l'actionneur est hydraulique ; - le moyen de solidarisation est un manchon ; - le moyen de solidarisation est une bague ; 20 L'invention a également pour objet un procédé de fonctionnement d'un dispositif de couplage selon l'une quelconque des caractéristiques précédentes, caractérisé en ce que lorsque le véhicule est en mode de roulage thermique uniquement, - on coupe l'alimentation en énergie de la machine électrique 25 - on détermine au moyen de capteurs la position des manchons, - lorsque les moyens de solidarisation recouvrent à la fois la première et la deuxième partie, alors on active les actionneurs pour translater les moyens de solidarisation, de sorte à décraboter la machine électrique du système de transmission ; 30 En variante, lorsque la machine électrique doit être craboté au système de transmission, - on détermine au moyen de capteurs la position du moyen de solidarisation, - lorsque le moyen de solidarisation ne recouvre pas la première et la 35 deuxième partie, alors on active les actionneurs pour translater les moyens de solidarisation, de sorte à craboter la machine électrique au système de transmission du véhicule. L'invention sera mieux comprise à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Celles-ci ne sont présentées qu'à titre illustratif mais nullement limitatif de l'invention. Les figures montent : - Figure 1 : une représentation schématique du système de transmission d'un véhicule, selon un mode de réalisation de l'invention ; - Figures 2a-2d : des représentations schématiques d'un dispositif de couplage selon un mode de réalisation de l'invention ; La figure 1 représente un système 10 de transmission d'un véhicule 12 hybride apte à évoluer en traction électrique et/ou en traction thermique. Ce système 10 de transmission comporte un bloc moteur (non représenté) apte à assurer la traction thermique du véhicule 12. Il comporte en outre une machine 14 électrique alimentée en énergie par un accumulateur 16. La machine 14 électrique est couplée à un réducteur 18. Ce réducteur 18 comporte un ensemble de pignons configuré de sorte à entrainer respectivement deux arbres 20, 22 de transmission. Ces arbres 20, 22 transmettent un couple, provenant de la machine électrique 14, respectivement aux roues 24, 26 du véhicule. The invention also includes any of the following features: the securing means comprises a fluted inner surface; - The ends are grooved configured so that when the securing means covers them, the first part and the second part are secured and form a rigid shaft adapted to transmit a torque from the electric machine to the wheels; - The securing means is translated on the shaft via an actuator controlled by a vehicle supervision computer; The actuator is pneumatic; the actuator is electromagnetic; the actuator is hydraulic; the securing means is a sleeve; the securing means is a ring; The invention also relates to a method of operating a coupling device according to any one of the preceding features, characterized in that when the vehicle is in thermal rolling mode only, - the power supply is cut off. of the electrical machine 25 - the position of the sleeves is determined by means of sensors, - when the securing means cover both the first and the second part, then the actuators are activated to translate the securing means, so as to disengage the electric machine of the transmission system; In a variant, when the electric machine is to be interconnected with the transmission system, the position of the securing means is determined by means of sensors, when the securing means does not cover the first and the second part, then it is activated. the actuators for translating the securing means, so as to engage the electric machine to the transmission system of the vehicle. The invention will be better understood on reading the description which follows and on examining the figures which accompany it. These are presented for illustrative purposes only but not limited to the invention. The figures show: - Figure 1: a schematic representation of the transmission system of a vehicle, according to one embodiment of the invention; - Figures 2a-2d: schematic representations of a coupling device according to one embodiment of the invention; FIG. 1 represents a system 10 for transmitting a hybrid vehicle 12 able to evolve in electric traction and / or in thermal traction. This transmission system 10 comprises a motor unit (not shown) capable of ensuring the thermal traction of the vehicle 12. It further comprises an electric machine 14 powered by a battery 16. The electric machine 14 is coupled to a gearbox 18. This reducer 18 comprises a set of pinions configured so as to respectively drive two shafts 20, 22 of transmission. These shafts 20, 22 transmit a torque, coming from the electric machine 14, respectively to the wheels 24, 26 of the vehicle.

Lorsque le véhicule 12 se trouve en phase de roulage en mode thermique uniquement, l'alimentation de la machine 14 électrique est interrompue. Toutefois, lorsque la machine électrique est toujours crabotée, le déplacement du véhicule 12 entraine la rotation des roues associées à la traction électrique et la machine 14 électrique entre en rotation malgré elle. When the vehicle 12 is in driving phase in thermal mode only, the power supply of the electric machine 14 is interrupted. However, when the electric machine is still clutched, the movement of the vehicle 12 causes the rotation of the wheels associated with the electric traction and the electric machine 14 rotates in spite of itself.

En fonction de la vitesse du véhicule 12, la rotation de la machine 14 électrique peut être telle qu'elle atteint un régime critique pouvant entraîner la casse de ladite machine 14. Pour palier à ce problème, l'invention propose de diviser chaque arbre 20, 22 de transmission en deux parties respectivement 20a, 20b pour l'arbre de transmission de droite et 22a, 22b pour l'arbre de transmission de gauche. Les figures 2a-2d illustrent plus en détail une barre de transmission 20, 22, selon un mode de réalisation de l'invention. L'arbre de transmission 20, 22, comporte une première partie 20a, 22a, dont une extrémité 24, 26, est relié solidairement à un élément entraineur respectivement 28, 30, couplé à un pignon de sortie (non représenté) du réducteur de la machine 14 électrique. Cette première partie 20a, 22a, comporte une extrémité 32a, 34a, montée libre en rotation par rapport à une extrémité 32b, 34b d'une deuxième partie 20b, 2211 Cette deuxième partie 20b, 22b, comporte une extrémité 36, 38, reliée solidairement à un élément entraineur respectivement 40, 42, couplé au roues 24, 26. Les extrémités 32a, 32b et 34a, 34b sont configurées de sorte à être cannelée. L'invention comporte également un manchon 48, 50 de forme essentiellement cylindrique apte à coulisser respectivement le long de l'arbre de transmission 20, 22. L'intérieur du manchon 48, 50, présente une surface cannelée de sorte que, lorsque le manchon recouvre à la fois respectivement l'extrémité 32a, 34a et l'extrémité 32b, 34b, alors les parties respectives 20a, 22a et 20b, 22b sont solidarisées et forment chacune un arbre rigide 20, 22 apte à transmettre un couple issue de la machine électrique aux roues 24, 26. Dans l'invention, le déplacement de ce manchon 48, 50 est réalisé par un calculateur dit de supervision du véhicule. Ce calculateur (non représenté) de supervision est connu de l'état de la technique. Il comporte notamment une mémoire programme et une mémoire de données connectées à un microprocesseur via un ensemble de bus de communication. Le calculateur de supervision commande des actionneurs apte à translater de manière synchrone les manchons 48, 50 de sorte à solidariser les parties respectives 20a, 22a à 20b, 2211 Les actions commandées par le calculateur de supervision sont ordonnées par le microprocesseur. Le microprocesseur produit, en réponse aux codes instruction enregistrés dans la mémoire programme des ordres destinés aux différents organes du véhicule. Dans un mode de réalisation de l'invention, le véhicule hybride dispose de quatre modes de roulage. Dans un premier mode de roulage du véhicule, dit thermique, la machine électrique n'est pas alimentée en énergie, et seul la machine thermique permet de mouvoir le véhicule. Le calculateur détermine au moyen de capteurs (non représentés) la position des manchons 48, 50. Si le manchon recouvrent à la fois les parties respectives 20a, 22a et 20b, 22b, alors le calculateur active les actionneurs pour translater les manchons 48, 50, de sorte à décraboter la machine 14 électrique. Depending on the speed of the vehicle 12, the rotation of the electric machine 14 may be such that it reaches a critical speed that can cause the breakage of said machine 14. To overcome this problem, the invention proposes to divide each shaft 20 , 22 transmission two parts respectively 20a, 20b for the right transmission shaft and 22a, 22b for the left drive shaft. Figures 2a-2d illustrate in more detail a transmission bar 20, 22, according to one embodiment of the invention. The transmission shaft 20, 22 comprises a first part 20a, 22a, one end 24, 26 of which is integrally connected to a driving element 28, 30 respectively, coupled to an output gear (not shown) of the gearbox of the 14 electric machine. This first portion 20a, 22a has an end 32a, 34a, mounted free to rotate relative to an end 32b, 34b of a second portion 20b, 2211 This second portion 20b, 22b, has an end 36, 38, connected jointly. to a driving member respectively 40, 42, coupled to the wheels 24, 26. The ends 32a, 32b and 34a, 34b are configured to be fluted. The invention also comprises a sleeve 48, 50 of substantially cylindrical shape slidable respectively along the transmission shaft 20, 22. The inside of the sleeve 48, 50, has a fluted surface so that, when the sleeve covers at the same time respectively the end 32a, 34a and the end 32b, 34b, then the respective parts 20a, 22a and 20b, 22b are secured and each form a rigid shaft 20, 22 able to transmit a torque from the machine In the invention, the displacement of this sleeve 48, 50 is carried out by a so-called supervision computer of the vehicle. This computer (not shown) supervision is known from the state of the art. It notably comprises a program memory and a data memory connected to a microprocessor via a set of communication buses. The supervision computer controls actuators adapted to synchronously translate the sleeves 48, 50 so as to secure the respective parts 20a, 22a to 20b, 2211 The actions controlled by the supervision computer are ordered by the microprocessor. The microprocessor produces, in response to the instruction codes stored in the program memory, commands for the various components of the vehicle. In one embodiment of the invention, the hybrid vehicle has four modes of running. In a first mode of rolling the vehicle, called thermal, the electric machine is not powered, and only the thermal machine can move the vehicle. The computer determines by means of sensors (not shown) the position of the sleeves 48, 50. If the sleeve covers both the respective parts 20a, 22a and 20b, 22b, then the computer activates the actuators to translate the sleeves 48, 50 , so as to disengage the electric machine 14.

Dans un deuxième mode de roulage du véhicule, combinant à la fois une traction thermique à une traction électrique, comme par exemple les phases de roulage nécessitant un ajout de puissance dit phase de boost, le calculateur détermine au moyen des capteurs la position du manchon 48, 50. In a second driving mode of the vehicle, combining both a thermal traction with an electric traction, such as for example the driving phases requiring an addition of said power boost phase, the computer determines by means of sensors the position of the sleeve 48 , 50.

Si le manchon ne recouvre pas les parties respectives 20a, 22a et 20b, 22b, alors le calculateur active les actionneurs pour translater les manchons 48, 50, de sorte à craboter la machine 14 électrique. Dans un troisième mode de roulage, dit tout électrique, la machine thermique n'est plus en fonction, comme par exemple en milieu urbain. Le calculateur détermine de nouveau la position du manchon 48, 50. Si le manchon ne recouvre pas les parties respectives 20a, 22a et 20b, 22b, alors le calculateur active les actionneurs pour translater les manchons 48, 50, de sorte à craboter la machine 14 électrique. Dans un quatrième mode de roulage, dite phase de recharge batterie, la machine 14 électrique est couplée au système de transmission du véhicule pour faire office de génératrice d'énergie électrique. Le calculateur détermine de nouveau la position du manchon 48, 50. Si le manchon ne recouvre pas les parties respectives 20a, 22a et 20b, 22b, alors le calculateur active les actionneurs pour translater les manchons 48, 50, de sorte à craboter la machine 14 électrique. Dans un mode de réalisation de l'invention, l'actionneur permettant de translater le manchon d'une position de couplage de la machine électrique à une position de crabotage de cette dernière, est un actionneur électromagnétique. If the sleeve does not cover the respective parts 20a, 22a and 20b, 22b, then the computer activates the actuators to translate the sleeves 48, 50 so as to engage the machine 14 electric. In a third mode of rolling, said all electric, the thermal machine is no longer in function, as for example in urban areas. The computer again determines the position of the sleeve 48, 50. If the sleeve does not cover the respective parts 20a, 22a and 20b, 22b, then the computer activates the actuators to translate the sleeves 48, 50, so as to engage the machine 14 electric. In a fourth mode of rolling, known as battery charging phase, the electric machine 14 is coupled to the vehicle transmission system to act as a generator of electrical energy. The computer again determines the position of the sleeve 48, 50. If the sleeve does not cover the respective parts 20a, 22a and 20b, 22b, then the computer activates the actuators to translate the sleeves 48, 50, so as to engage the machine 14 electric. In one embodiment of the invention, the actuator for translating the sleeve from a coupling position of the electric machine to a position of interconnection of the latter, is an electromagnetic actuator.

Dans une variante de réalisation de l'invention, l'actionneur est de type pneumatique. Dans une autre variante, l'actionneur est du type hydraulique. Dans un autre mode de réalisation de l'invention, le manchon est remplacé par une bague cannelée apte à venir se craboter sur les parties 20a, 22a et 20b, 22b cannelées de l'arbre de transmission 20, 22. Dans un mode de réalisation de l'invention, le couplage du manchon ou de la bague est prévu pour une translation du manchon ou de la bague du côté du réducteur. En variante, cette translation est effectuée du côté de la roue. In an alternative embodiment of the invention, the actuator is of the pneumatic type. In another variant, the actuator is of the hydraulic type. In another embodiment of the invention, the sleeve is replaced by a grooved ring adapted to come and engage on the grooved portions 20a, 22a and 20b, 22b of the transmission shaft 20, 22. In one embodiment of the invention, the coupling of the sleeve or the ring is provided for a translation of the sleeve or the ring on the side of the gearbox. Alternatively, this translation is performed on the side of the wheel.

Dans un perfectionnement de l'invention, il est prévu l'ajout d'un dispositif de verrouillage de la position du manchon de sorte à pouvoir se libérer de la force d'actionnement une fois la bague ou le manchon en place et verrouillé. In an improvement of the invention, it is provided the addition of a locking device of the position of the sleeve so as to be released from the actuating force once the ring or the sleeve in place and locked.

Claims (1)

REVENDICATIONS1-Dispositif de couplage d'une machine (14) électrique d'un système de transmission d'un véhicule automobile comportant une traction électrique et une traction thermique, ledit dispositif comportant un arbre de transmission, reliant un réducteur de la machine (14) électrique à une roue (24, 26), caractérisé en ce que, l'arbre (20, 22) de transmission comporte une première partie (20a, 22a) et une deuxième partie (20b, 22b) libres uniquement en rotation l'une par rapport à l'autre suivant un axe formé par ledit arbre (20, 22), et en ce qu'il comporte en outre un moyen de solidarisation (48, 50) apte à coulisser sur l'arbre (20, 22) de transmission, de sorte à solidariser les deux parties et permettre le passage du couple du réducteur vers la roue associée à l'arbre (20, 22) de transmission. CLAIMS1-Device for coupling an electric machine (14) of a transmission system of a motor vehicle comprising an electric traction and a thermal traction, said device comprising a transmission shaft, connecting a reduction gear of the machine (14) electric wheel (24, 26), characterized in that the transmission shaft (20, 22) has a first portion (20a, 22a) and a second portion (20b, 22b) free to rotate only one relative to the other along an axis formed by said shaft (20, 22), and in that it further comprises a securing means (48, 50) slidable on the shaft (20, 22) of transmission, so as to secure the two parts and allow the passage of torque from the gearbox to the wheel associated with the shaft (20, 22) of transmission. 2-Dispositif selon la revendication 1, caractérisé en ce que le moyen de solidarisation comporte une surface intérieure cannelée. 2-Device according to claim 1, characterized in that the securing means comprises a grooved inner surface. 3-Dispositif selon la revendication 2, caractérisé en ce que les extrémités (32a, 34a, 32b, 34b) sont cannelées configurées de sorte que lorsque le moyen de solidarisation (48, 50) les recouvre, la première partie (20a, 22a) et la deuxième partie (20b, 22b) sont solidarisées et forment un arbre (20, 22) rigide apte à transmettre un couple issu de la machine (14) électrique aux roues (24, 26). 3-Device according to claim 2, characterized in that the ends (32a, 34a, 32b, 34b) are grooved configured so that when the securing means (48, 50) covers them, the first portion (20a, 22a). and the second part (20b, 22b) are secured and form a rigid shaft (20, 22) capable of transmitting torque from the electric machine (14) to the wheels (24, 26). 4-Dispositif selon l'une des revendications précédentes, caractérisé en ce que le moyen de solidarisation est translaté sur l'arbre (20, 22) par l'intermédiaire d'un actionneur commandé par un calculateur de supervision du véhicule (12). 4-Device according to one of the preceding claims, characterized in that the securing means is translated on the shaft (20, 22) via an actuator controlled by a vehicle supervision computer (12). 5-Dispositif selon la revendication 4, caractérisé en ce que l'actionneur est pneumatique. 5-Device according to claim 4, characterized in that the actuator is pneumatic. 6-Dispositif selon la revendication 4, caractérisé en ce que l'actionneur est électromagnétique. 6-Device according to claim 4, characterized in that the actuator is electromagnetic. 7-Dispositif selon la revendication 4, caractérisé en ce que l'actionneur est hydraulique. 7-Device according to claim 4, characterized in that the actuator is hydraulic. 8-Dispositif selon l'une des revendications précédentes, caractérisé en 35 ce que le moyen de solidarisation (48, 50) est un manchon. 8-Device according to one of the preceding claims, characterized in that the securing means (48, 50) is a sleeve. 9-Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que le moyen de solidarisation (48, 50) est une bague. 9-Device according to one of claims 1 to 7, characterized in that the securing means (48, 50) is a ring. 10-Procédé de fonctionnement d'un dispositif de crabotage selon l'une quelconque des revendications précédentes, caractérisé en ce que lorsque 5 le véhicule est en mode de roulage thermique uniquement, - on coupe l'alimentation en énergie de la machine électrique - on détermine au moyen de capteurs la position des manchons (48, 50), - lorsque les moyens de solidarisation (48, 50) recouvrent à la fois la 10 première (20a, 22a) et la deuxième (20b, 22b) partie, alors on active les actionneurs pour translater les moyens de solidarisation (48, 50), de sorte à décraboter la machine (14) électrique du système (10) de transmission. 10-A method of operating a dog clutch device according to any one of the preceding claims, characterized in that when the vehicle is in thermal rolling mode only - the power supply of the electric machine is cut off - one determines by means of sensors the position of the sleeves (48, 50), - when the securing means (48, 50) cover both the first (20a, 22a) and the second (20b, 22b) part, then one activates the actuators to translate the securing means (48, 50), so as to disengage the machine (14) of the electric transmission system (10). 11-Procédé selon la revendication 10, caractérisé en ce que lorsque la machine (14) électrique doit être craboté au système(10) de transmission 15 - on détermine au moyen de capteurs la position du moyen de solidarisation (48, 50), - lorsque le moyen de solidarisation (48, 50) ne recouvre pas la première (20a, 22a) et la deuxième (20b, 22b) partie, alors on active les actionneurs pour translater les moyens de solidarisation (48, 50), de sorte à 20 craboter la machine (14) électrique au système (10) de transmission du véhicule (12). 11-Process according to claim 10, characterized in that when the machine (14) electrical must be clutched to the system (10) of transmission 15 - is determined by means of sensors the position of the securing means (48, 50), - when the securing means (48, 50) does not overlap the first (20a, 22a) and the second (20b, 22b) parts, then the actuators are activated to translate the securing means (48, 50), so as to 20 can link the machine (14) to the electric vehicle transmission system (10) (12).
FR1058332A 2010-10-13 2010-10-13 Coupling device for coupling electric machine of transmission system of thermal-electric hybrid vehicle, has integrating unit to integrate parts of shaft and to allow passage of torque of reducer toward wheel associated with shaft Pending FR2966093A1 (en)

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FR1058332A FR2966093A1 (en) 2010-10-13 2010-10-13 Coupling device for coupling electric machine of transmission system of thermal-electric hybrid vehicle, has integrating unit to integrate parts of shaft and to allow passage of torque of reducer toward wheel associated with shaft

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FR1058332A FR2966093A1 (en) 2010-10-13 2010-10-13 Coupling device for coupling electric machine of transmission system of thermal-electric hybrid vehicle, has integrating unit to integrate parts of shaft and to allow passage of torque of reducer toward wheel associated with shaft

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WO2014020026A1 (en) * 2012-08-02 2014-02-06 Magna Powertrain Ag & Co Kg Method for operating a powertrain

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Publication number Priority date Publication date Assignee Title
US6105704A (en) * 1995-09-11 2000-08-22 Honda Giken Kogyo Kabushiki Kaisha Coupling device between left and right wheels of vehicle
EP1826089A2 (en) * 2006-02-22 2007-08-29 Ford Global Technologies, LLC Hybrid motor vehicle driveline

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Publication number Priority date Publication date Assignee Title
US6105704A (en) * 1995-09-11 2000-08-22 Honda Giken Kogyo Kabushiki Kaisha Coupling device between left and right wheels of vehicle
US6325736B1 (en) * 1995-09-11 2001-12-04 Honda Giken Kogyo Kabushiki Kaisha Coupling device between left and right wheels of vehicle
EP1826089A2 (en) * 2006-02-22 2007-08-29 Ford Global Technologies, LLC Hybrid motor vehicle driveline

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Publication number Priority date Publication date Assignee Title
WO2014020026A1 (en) * 2012-08-02 2014-02-06 Magna Powertrain Ag & Co Kg Method for operating a powertrain
DE112013003797B4 (en) * 2012-08-02 2017-07-27 Magna powertrain gmbh & co kg Method for operating a drive train

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