FR3019131A1 - VEHICLE CHASSIS SUPPORTING A VEHICLE TRACTION ELECTRIC MOTOR POWERTRAIN - Google Patents

VEHICLE CHASSIS SUPPORTING A VEHICLE TRACTION ELECTRIC MOTOR POWERTRAIN Download PDF

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Publication number
FR3019131A1
FR3019131A1 FR1452779A FR1452779A FR3019131A1 FR 3019131 A1 FR3019131 A1 FR 3019131A1 FR 1452779 A FR1452779 A FR 1452779A FR 1452779 A FR1452779 A FR 1452779A FR 3019131 A1 FR3019131 A1 FR 3019131A1
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FR
France
Prior art keywords
vehicle
chassis
tubes
tube
powertrain
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Granted
Application number
FR1452779A
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French (fr)
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FR3019131B1 (en
Inventor
Manuel Chalvet
Stephane Lanotte
Gilles Angin
Marcel Guenat
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Stellantis Auto Sas Fr
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Peugeot Citroen Automobiles SA
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Priority to FR1452779A priority Critical patent/FR3019131B1/en
Publication of FR3019131A1 publication Critical patent/FR3019131A1/en
Application granted granted Critical
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D21/00Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K2001/001Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

Le châssis (10) d'un véhicule automobile comporte deux supports latéraux (20) et un support arrière (25) adaptés à fixer le châssis (10) au véhicule. Ce châssis comporte en outre un premier tube (12) et un second tube (13). Un des supports latéraux (20) est fixé au premier tube (12) et l'autre au second tube (13). Le support arrière (25) est fixé aux premier et second tubes (12, 13).The frame (10) of a motor vehicle comprises two lateral supports (20) and a rear support (25) adapted to fix the frame (10) to the vehicle. This frame further comprises a first tube (12) and a second tube (13). One of the lateral supports (20) is fixed to the first tube (12) and the other to the second tube (13). The rear support (25) is attached to the first and second tubes (12, 13).

Description

CHASSIS D'UN VEHICULE SUPPORTANT UN GROUPE MOTOPROPULSEUR ELECTRIQUE DE TRACTION DU VEHICULE La présente invention se rapporte à un châssis d'un véhicule automobile supportant un groupe motopropulseur électrique de traction du véhicule, ainsi qu'à un véhicule automobile comportant un tel châssis. L'invention appartient au domaine des châssis de véhicules automobiles. Un véhicule électrique comporte habituellement, pour sa traction, un groupe motopropulseur muni d'une machine électrique entraînant les roues d'un essieu du véhicule. La machine électrique est reliée à une électronique de puissance, comprenant notamment un chargeur, un hacheur de courant et un onduleur, pour alimenter et contrôler cette machine. Dans le cas de petites séries de véhicules électriques, on peut chercher à disposer une motorisation électrique sur une caisse prévue à l'origine pour recevoir un moteur thermique entraînant les roues, afin de bénéficier des investissements importants déjà réalisés pour produire ce type de véhicule thermique en grande série. On connaît du document FR-A-2 975 067 un véhicule automobile comportant un châssis supportant un groupe motopropulseur électrique. Ce châssis est constitué d'un tube cintré en « U » fixé aux longerons latéraux du véhicule et d'un support reliant un point central du tube à la caisse du véhicule. La structure d'un tel châssis présente notamment comme inconvénient de ne pas transmettre correctement les efforts du groupe motopropulseur vers la caisse du véhicule. L'invention a pour but de remédier aux inconvénients de l'art antérieur. Dans ce but, la présente invention propose un châssis d'un véhicule automobile, le châssis comportant deux supports latéraux et un support arrière adaptés à fixer le châssis au véhicule, ce châssis étant remarquable en ce que : - il comporte en outre un premier tube et un second tube, - un des supports latéraux est fixé au premier tube et l'autre au second tube, et - le support arrière est fixé aux premier et second tubes.The present invention relates to a chassis of a motor vehicle supporting an electric powertrain traction unit of the vehicle, and to a motor vehicle comprising such a chassis. The invention belongs to the field of motor vehicle chassis. An electric vehicle usually comprises, for its traction, a powertrain equipped with an electric machine driving the wheels of an axle of the vehicle. The electrical machine is connected to a power electronics, including a charger, a current chopper and an inverter, to supply and control this machine. In the case of small series of electric vehicles, we can seek to have an electric motor on a box originally intended to receive a heat engine driving the wheels, to benefit from the significant investments already made to produce this type of thermal vehicle in large series. Document FR-A-2 975 067 discloses a motor vehicle comprising a chassis supporting an electric powertrain. This frame consists of a bent tube "U" attached to the side rails of the vehicle and a support connecting a central point of the tube to the vehicle body. The structure of such a chassis has the particular disadvantage of not properly transmit the powertrain efforts to the vehicle body. The invention aims to overcome the disadvantages of the prior art. For this purpose, the present invention proposes a chassis of a motor vehicle, the chassis comprising two lateral supports and a rear support adapted to fix the chassis to the vehicle, this chassis being remarkable in that: it further comprises a first tube; and a second tube, one of the side supports is attached to the first tube and the other to the second tube, and the rear support is attached to the first and second tubes.

Ainsi, l'invention permet d'améliorer la transmission des efforts du groupe motopropulseur vers le véhicule. L'invention permet également de faciliter le processus de réalisation du châssis. Selon une caractéristique particulière, les premier et second tubes ont une section circulaire. La section circulaire des tubes permet d'avoir un bon compromis entre le coût, la masse et la tenue mécanique du châssis. Selon une caractéristique particulière, les premier et second tubes sont cintrés.Thus, the invention improves the transmission of powertrain efforts to the vehicle. The invention also facilitates the process of producing the chassis. According to a particular characteristic, the first and second tubes have a circular section. The circular section of the tubes makes it possible to have a good compromise between the cost, the mass and the mechanical strength of the chassis. According to a particular characteristic, the first and second tubes are bent.

Selon une caractéristique particulière, les premier et second tubes sont cintrés suivant une forme générale de « S ». Selon une caractéristique particulière, le support arrière est fixé à une extrémité de chacun des premier et second tubes. Selon une caractéristique particulière, le châssis comporte en outre au moins une traverse liant entre eux les premier et second tubes. Ainsi la rigidité du châssis est renforcée. L'invention concerne également un véhicule automobile comportant un châssis tel que décrit précédemment. Selon une caractéristique particulière, ce châssis est disposé suivant un plan parallèle à un plancher du véhicule. Selon une caractéristique particulière, le véhicule comporte en outre un groupe motopropulseur électrique pour la traction du véhicule et deux longerons latéraux disposés de part et d'autre du groupe motopropulseur, chacun des supports latéraux étant fixé à l'un desdits longerons latéraux.According to a particular characteristic, the first and second tubes are bent in a general shape of "S". According to a particular characteristic, the rear support is attached to one end of each of the first and second tubes. According to a particular characteristic, the chassis further comprises at least one cross member linking the first and second tubes together. Thus the rigidity of the chassis is reinforced. The invention also relates to a motor vehicle comprising a chassis as described above. According to a particular characteristic, this frame is arranged in a plane parallel to a floor of the vehicle. According to a particular feature, the vehicle further comprises an electric powertrain for traction of the vehicle and two side rails arranged on either side of the powertrain, each of the lateral supports being fixed to one of said side rails.

Selon une caractéristique particulière, le véhicule comporte en outre un berceau avant disposé sous le groupe motopropulseur, le support arrière étant fixé au berceau. Selon une caractéristique particulière, le groupe motopropulseur est lié au châssis par des moyens élastiques.According to a particular characteristic, the vehicle further comprises a front cradle disposed under the powertrain, the rear support being fixed to the cradle. According to a particular characteristic, the powertrain is connected to the chassis by elastic means.

L'invention sera mieux comprise et d'autres aspects et avantages apparaîtront plus clairement à la lecture de la description qui suit d'un mode particulier de réalisation, donné à titre d'exemple nullement limitatif et en référence aux dessins qui l'accompagnent, dans lesquels : - les figures 1 à 3 sont des vues d'un groupe motopropulseur électrique fixé à un châssis conforme à l'invention ; et - les figures 4 et 5 sont des vues du châssis des figures 1 à 3 installé dans un véhicule.The invention will be better understood and other aspects and advantages will appear more clearly on reading the following description of a particular embodiment, given by way of non-limiting example and with reference to the accompanying drawings. in which: - Figures 1 to 3 are views of an electric powertrain fixed to a frame according to the invention; and - Figures 4 and 5 are views of the frame of Figures 1 to 3 installed in a vehicle.

Les figures 1 à 3 présentent des vues d'un châssis 10, supportant un groupe motopropulseur électrique 16. Le châssis 10 comporte, pour le fixer à un véhicule, deux supports latéraux 20 et un support arrière 25.Figures 1 to 3 show views of a frame 10, supporting an electric power train 16. The chassis 10 comprises, for attachment to a vehicle, two lateral supports 20 and a rear support 25.

Conformément à l'invention, le châssis 10 comporte un premier tube 12 et un second tube 13. Un des supports latéraux 20 est fixé au premier tube 12 et l'autre est fixé au second tube 13. Les supports latéraux 20 sont par exemple fixés aux tubes 12 et 13 par des vis. Le support arrière 25 est fixé à la fois au premier tube 12 et au second tube 13. La fixation du support arrière sur les tubes 12 et 13 est par exemple réalisée par soudage. Les premier et second tubes 12 et 13 sont de section circulaire et sont cintrés. Le cintrage des tubes 12 et 13 suit une forme générale de « S ». Le support arrière 25 est fixé à une extrémité de chacun des premier et second tubes 12 et 13. Une traverse avant 14 lie entre eux les tubes 12 et 13 pour fermer et rigidifier le châssis 10. Pour augmenter la rigidité du châssis 10, une traverse arrière 15 peut également lier entre eux les tubes 12 et 13. Le groupe motopropulseur 16 permet la traction d'un véhicule automobile et comporte une machine électrique. La machine électrique est reliée à une transmission disposant de sorties liées à des arbres de roues non représentés, permettant d'entraîner les roues motrices d'un essieu du véhicule (non représenté). Le groupe motopropulseur 16 est suspendu par des suspensions élastiques sous le châssis 10. Les figures 4 et 5 présentent des vues du châssis 10 dans la partie avant d'un véhicule automobile équipé du châssis 10 et du groupe motopropulseur électrique 16 déjà décrits. Sur ces deux figures, une flèche indique le côté avant du véhicule.According to the invention, the frame 10 comprises a first tube 12 and a second tube 13. One of the lateral supports 20 is fixed to the first tube 12 and the other is attached to the second tube 13. The lateral supports 20 are for example fixed to the tubes 12 and 13 by screws. The rear support 25 is attached to both the first tube 12 and the second tube 13. The attachment of the rear support on the tubes 12 and 13 is for example made by welding. The first and second tubes 12 and 13 are of circular section and are bent. The bending of the tubes 12 and 13 follows a general shape of "S". The rear support 25 is attached to one end of each of the first and second tubes 12 and 13. A front cross member 14 interconnects the tubes 12 and 13 to close and stiffen the frame 10. To increase the rigidity of the frame 10, a crossbar rear 15 can also bind together the tubes 12 and 13. The powertrain 16 allows the traction of a motor vehicle and comprises an electric machine. The electric machine is connected to a transmission having outputs linked to unrepresented wheel shafts, for driving the driving wheels of an axle of the vehicle (not shown). The power train 16 is suspended by elastic suspensions under the frame 10. Figures 4 and 5 show views of the frame 10 in the front portion of a motor vehicle equipped with the chassis 10 and the electric powertrain 16 already described. In these two figures, an arrow indicates the front side of the vehicle.

La partie avant de la caisse du véhicule comprend deux longerons latéraux 4 et un berceau avant 5. Les longerons latéraux 4 sont disposés longitudinalement de chaque côté du groupe motopropulseur 16. Le berceau avant 5 est disposé sous le groupe motopropulseur 16. Chacun des supports latéraux 20 est fixé à un des longerons latéraux 4. Le support arrière 25 est fixé au berceau 5. Les supports 20 et 25 peuvent par exemple être fixés au véhicule par vissage.The front part of the vehicle body comprises two side rails 4 and a front cradle 5. The side rails 4 are arranged longitudinally on each side of the power train 16. The front cradle 5 is disposed under the power train 16. Each of the lateral supports 20 is attached to one of the side rails 4. The rear support 25 is fixed to the cradle 5. The supports 20 and 25 may for example be fixed to the vehicle by screwing.

Les supports latéraux 20 peuvent être similaires à ceux utilisés pour un moteur thermique. Les supports latéraux 20 peuvent être fixés aux tubes 12 et 13 lors d'un processus d'assemblage du châssis 20 sur le véhicule. Les supports latéraux 20 permettent d'assurer un coiffage par le bas du châssis 10 avec la caisse du véhicule. Le châssis 10 est ensuite fixé par le haut au moyen des supports latéraux 20, les supports latéraux 20 étant vissés d'une part sur longerons latéraux 4 et d'autre part sur les tubes 12 et 13. Le support arrière 25 a pour fonction principale de transmettre, entre le châssis 10 et le véhicule, un couple de réaction s'opposant au couple moteur que le groupe motopropulseur 16 applique sur les roues motrices. Le châssis 10 forme un cadre et est disposé suivant un plan horizontal, parallèle à un plancher du véhicule. Pour améliorer le comportement du cadre 10 en cas de choc, le second tube 13, situé sur la gauche du véhicule, est en forme de manivelle en partie avant. Ainsi, un châssis conforme à l'invention et un véhicule équipé d'un tel châssis permettent d'améliorer la transmission des efforts du groupe motopropulseur vers la caisse du véhicule.20The side supports 20 may be similar to those used for a heat engine. The side supports 20 may be attached to the tubes 12 and 13 during a process of assembling the frame 20 to the vehicle. The lateral supports 20 make it possible to ensure a styling from the bottom of the chassis 10 with the vehicle body. The chassis 10 is then fixed at the top by means of the lateral supports 20, the lateral supports 20 being screwed on the one hand on the side rails 4 and on the other hand on the tubes 12 and 13. The main purpose of the rear support 25 is to transmit, between the frame 10 and the vehicle, a reaction torque opposing the engine torque that the powertrain 16 applies to the drive wheels. The chassis 10 forms a frame and is arranged in a horizontal plane, parallel to a floor of the vehicle. To improve the behavior of the frame 10 in case of impact, the second tube 13, located on the left of the vehicle, is crank-shaped at the front. Thus, a chassis according to the invention and a vehicle equipped with such a chassis make it possible to improve the transmission of forces from the powertrain to the vehicle body.

Claims (10)

REVENDICATIONS1. Châssis (10) d'un véhicule automobile, ledit châssis (10) comportant deux supports latéraux (20) et un support arrière (25) adaptés à fixer ledit châssis (10) au véhicule, caractérisé en ce que : il comporte en outre un premier tube (12) et un second tube (13), un desdits supports latéraux (20) est fixé audit premier tube (12) et l'autre audit second tube (13), et - ledit support arrière (25) est fixé auxdits premier et second tubes (12, 13).REVENDICATIONS1. Chassis (10) of a motor vehicle, said chassis (10) having two lateral supports (20) and a rear support (25) adapted to fix said chassis (10) to the vehicle, characterized in that it further comprises a first tube (12) and a second tube (13), one of said side supports (20) is attached to said first tube (12) and the other to said second tube (13), and - said rear holder (25) is attached to said first and second tubes (12, 13). 2. Châssis (10) selon la revendication 1, caractérisé en ce que lesdits premier et second tubes (12, 13) ont une section circulaire.2. Chassis (10) according to claim 1, characterized in that said first and second tubes (12, 13) have a circular section. 3. Châssis (10) selon la revendication 1 ou 2, caractérisé en ce que lesdits premier et second tubes (12, 13) sont cintrés.3. Chassis (10) according to claim 1 or 2, characterized in that said first and second tubes (12, 13) are bent. 4. Châssis (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit support arrière (25) est fixé à une extrémité de chacun desdits premier et second tubes (12, 13).Chassis (10) according to any one of the preceding claims, characterized in that said rear support (25) is fixed at one end of each of said first and second tubes (12, 13). 5. Châssis (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte en outre au moins une traverse (14, 15) liant entre eux lesdits premier et second tubes (12, 13).5. Frame (10) according to any one of the preceding claims, characterized in that it further comprises at least one cross member (14, 15) connecting said first and second tubes (12, 13) between them. 6. Véhicule automobile caractérisé en ce qu'il comporte un châssis (10) selon l'une quelconque des revendications précédentes.6. Motor vehicle characterized in that it comprises a frame (10) according to any one of the preceding claims. 7. Véhicule automobile selon la revendication 6, caractérisé en ce que ledit châssis (10) est disposé suivant un plan parallèle à un plancher du 25 véhicule.7. Motor vehicle according to claim 6, characterized in that said frame (10) is disposed in a plane parallel to a floor of the vehicle. 8. Véhicule automobile selon la revendication 6 ou 7, comportant en outre un groupe motopropulseur électrique (16) pour la traction dudit véhicule et deux longerons latéraux (4) disposés de part et d'autre dudit groupe motopropulseur (16), caractérisé en ce que chacun desdits supports latéraux 30 (20) est fixé à l'un desdits longerons latéraux (4).8. Motor vehicle according to claim 6 or 7, further comprising an electric powertrain (16) for traction of said vehicle and two side rails (4) arranged on either side of said powertrain (16), characterized in that each of said side supports 30 (20) is attached to one of said side rails (4). 9. Véhicule automobile selon la revendication 8, comportant en outre un berceau avant (5) disposé sous ledit groupe motopropulseur (16), caractérisé en ce que ledit support arrière (25) est fixé audit berceau (5).9. Motor vehicle according to claim 8, further comprising a front cradle (5) disposed under said powertrain (16), characterized in that said rear support (25) is fixed to said cradle (5). 10. Véhicule automobile selon l'une des revendications 8 ou 9, 35 caractérisé en ce que ledit groupe motopropulseur (16) est lié audit châssis (10) par des moyens élastiques.10. Motor vehicle according to one of claims 8 or 9, characterized in that said powertrain (16) is connected to said frame (10) by elastic means.
FR1452779A 2014-03-31 2014-03-31 VEHICLE CHASSIS SUPPORTING A VEHICLE TRACTION ELECTRIC MOTOR POWERTRAIN Active FR3019131B1 (en)

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Application Number Priority Date Filing Date Title
FR1452779A FR3019131B1 (en) 2014-03-31 2014-03-31 VEHICLE CHASSIS SUPPORTING A VEHICLE TRACTION ELECTRIC MOTOR POWERTRAIN

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Application Number Priority Date Filing Date Title
FR1452779A FR3019131B1 (en) 2014-03-31 2014-03-31 VEHICLE CHASSIS SUPPORTING A VEHICLE TRACTION ELECTRIC MOTOR POWERTRAIN

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111098923A (en) * 2018-10-25 2020-05-05 本田技研工业(中国)投资有限公司 Vehicle powertrain bracket and vehicle powertrain support structure

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US20080078603A1 (en) * 2006-09-28 2008-04-03 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Electric motor mounting structure for vehicles
JP2008081010A (en) * 2006-09-28 2008-04-10 Mitsubishi Motors Corp Vehicle motor mount structure
EP2184219A1 (en) * 2007-09-06 2010-05-12 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Electric automobile
EP2329980A2 (en) * 2009-12-03 2011-06-08 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Attachment structure of electromotor of hybrid vehicle
FR2954232A1 (en) * 2009-12-22 2011-06-24 Peugeot Citroen Automobiles Sa MOTOR VEHICLE COMPRISING AN ELECTROMOTING UNIT AND ITS POWER SUPPLY MODULE ARRANGED AT THE NEIGHBORHOOD OF A VEHICLE RUNNING TRAIN
FR2975067A1 (en) * 2011-05-09 2012-11-16 Peugeot Citroen Automobiles Sa VEHICLE COMPRISING A CHASSIS SUPPORTING AN ELECTRIC TRACTION DRIVING UNIT
FR2979093A1 (en) * 2011-08-17 2013-02-22 Peugeot Citroen Automobiles Sa Supporting structure for supporting electric drive powertrain of electric car, has backlash adjuster compensating play between connecting and bonding surfaces of intermediate frame, and bolts locking adjuster in play compensation position

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080078603A1 (en) * 2006-09-28 2008-04-03 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Electric motor mounting structure for vehicles
JP2008081010A (en) * 2006-09-28 2008-04-10 Mitsubishi Motors Corp Vehicle motor mount structure
EP2184219A1 (en) * 2007-09-06 2010-05-12 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Electric automobile
EP2329980A2 (en) * 2009-12-03 2011-06-08 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Attachment structure of electromotor of hybrid vehicle
FR2954232A1 (en) * 2009-12-22 2011-06-24 Peugeot Citroen Automobiles Sa MOTOR VEHICLE COMPRISING AN ELECTROMOTING UNIT AND ITS POWER SUPPLY MODULE ARRANGED AT THE NEIGHBORHOOD OF A VEHICLE RUNNING TRAIN
FR2975067A1 (en) * 2011-05-09 2012-11-16 Peugeot Citroen Automobiles Sa VEHICLE COMPRISING A CHASSIS SUPPORTING AN ELECTRIC TRACTION DRIVING UNIT
FR2979093A1 (en) * 2011-08-17 2013-02-22 Peugeot Citroen Automobiles Sa Supporting structure for supporting electric drive powertrain of electric car, has backlash adjuster compensating play between connecting and bonding surfaces of intermediate frame, and bolts locking adjuster in play compensation position

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111098923A (en) * 2018-10-25 2020-05-05 本田技研工业(中国)投资有限公司 Vehicle powertrain bracket and vehicle powertrain support structure

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