• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Four-wheel drive hybrid drivetrain comprising a first wheel axle coupled to an output differential (3) of a main power train and a second axle coupled to a bridge (4) mechanically connected to the differential output device (3) by a transmission shaft (6), and an electric traction machine (7), characterized in that the electric machine (7) is connected to the transfer shaft by a first coupler (9) and a reducer (8).
    公开号:FR3034715A1
    申请号:FR1553149
    申请日:2015-04-10
    公开日:2016-10-14
    发明作者:Pascal Ejarque；Matthieu Thomas
    申请人:Renault SAS；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The present invention relates to the field of transmission architectures for four-wheel drive road vehicles. More specifically, it relates to a four-wheel drive hybrid powertrain comprising a first axle of wheels coupled to an output differential of a main powertrain, and a second axle of wheels coupled to a connected axle. mechanically to the output differential by a transmission shaft, and to an electric traction machine. This invention also relates to a four-wheel drive vehicle provided with such a traction chain. Hybridization of a vehicle rear axle consists of integrating an electric traction machine on the bridge, or differential, rear transmission. In the case of a four-wheel-drive vehicle, an additional traction is introduced at an axle, for example the rear axle also receiving the movement of a traction machine implanted on the other axle, by 25 mm. example the front axle. The movement is transmitted from the front axle to the rear axle by a transmission shaft oriented in the longitudinal direction of the vehicle. It is therefore desired to integrate an additional electrical machine at the rear axle, already coupled to a main traction machine by a longitudinal transmission shaft. The electric machine must be able to bring its power to the rear wheels, either in addition to the power provided by the transmission shaft ("electric boost"), or in replacement 35 thereof (purely electric propulsion). US Pat. No. 8,672,068 discloses a four-wheel drive architecture with a transverse electric machine meshing directly with the bridge crown. The electric machine is integrated in the crankcase of the rear axle. The transmission architecture of the vehicle is strongly impacted by this hybridization, which also does not allow to decouple the electric machine from the transmission. It is an object of the present invention to limit the impact of rear axle hybridization on a vehicle transmission architecture while permitting different modes of operation. For this purpose, it provides that the electrical machine is connected to the transfer shaft by a first coupler and a gearbox. According to the invention, the gearbox may be disposed at the bridge inlet, or inside its housing. The present invention will be better understood on reading the following description of a non-limiting embodiment thereof, with reference to the appended drawings, in which: FIGS. 1A and 1B show the implantation of the electric machine; - Figure 2 is a kinematic diagram of the rear axle of Figure 1B; - Figure 3 illustrates a 4X4 thermal operating mode; - Figure 4 illustrates a hybrid 4X4 operating mode; - Figure 5 illustrates an electric 4X2 operating mode; and FIG. 6 illustrates a purely electric 4X4 operating mode. In FIG. 1A, there is shown a conventional four-wheel drive system comprising a first axle of wheels, coupled to an output differential of a main power train, and a second axle of wheels, coupled to a bridge 4 mechanically connected to the output differential 3 by a transmission shaft 6. There is a motor 3034715 - 3 - thermal 1 (ICE) and a gearbox 2 (BV) on the front axle. The movement starts from the front differential 3 to join the rear axle 4 by the longitudinal drive shaft 6. 5 Figure 1B refers to a hybrid four-wheel drive vehicle according to the invention, based on a traction chain, equipped in addition to an electric traction machine 7 arranged parallel to the transmission shaft 6 at the rear of the vehicle. In addition to the electric machine, the vehicle comprises a gearbox 8 associated with the electric machine 7 and two couplers 9, 11, respectively located between the differential 3 and the gearbox 8, and between the electric machine 7 and the gearbox 8. The electric machine 7 is connected to the transfer shaft 6 by the first coupler 9 and the gearbox 8. The first coupler 9 is disposed on the transmission shaft 6, more precisely between the output differential 3 and the gearbox 8. The gearbox is also mounted on the transfer shaft, at the entrance of the bridge 4. Without departing from the scope of the invention, it can also be arranged inside the deck housing. In Figure 2, there is the rear pull chain of the same vehicle, with the elements mentioned above. The two couplers 9, 11 are preferably controlled couplers. The rear axle 4 has an input ring 4a and a crown gear 4b. The input ring 4a receives the movement of the angular gear 4b, mounted at the end of the transmission shaft 6. The first coupler 9 makes it possible to establish or interrupt the transmission of the torque between the heat engine 1 and the gearbox 8. The second coupler 11 makes it possible to establish or interrupt the transmission of the torque between the electric machine 7 and the gearbox 8.
    [0002] In FIG. 3, the first coupler 9 is closed and the second coupler 11 is open. The engine 1 provides torque to the rear axle, while the electric machine 7 does not provide. The vehicle is in 4X4 3034715 -4 - thermal mode. In FIG. 4, the two couplers 9, 11 are closed. If the heat engine 1 and the electric machine 7 provide torque simultaneously, the vehicle moves in a hybrid 4X4 mode. When it does not provide it, the electric machine 7 can operate as a generator in a mode of energy recovery. In FIG. 5, the first coupler 9 is open, and the second coupler 11 is closed. When the electric machine 7 provides torque, with the engine 1 cut, and the gearbox 2 neutral, the vehicle moves in electric 4X2 mode. In Figure 6, the two couplers 9, 11 are closed. If the heat engine 1 is cut with the box 2 in neutral, the torque of the electric machine is directed on both axles. We are in electric 4X4 mode. The advantages of the invention are numerous. First of all, the mounting of the electric motor on the rear axle is independent of the definition of the main GMP, since their functions are completely decoupled. The contribution of torque on the rear axle of a 4X4 by an electric motor makes it possible to modify the dynamic behavior of the vehicle, because it allows a variation of the larger distribution of torque. In addition, on any terrain, the torque supply on the rear axle makes it possible to take advantage of the full potential of adhesion of the rear axle. Finally, the mounting of the electric motor on the rear axle is simpler than on the thermal GMP.
    权利要求:
    Claims (13)
    [0001]
    REVENDICATIONS1. A four-wheel-drive hybrid vehicle drivetrain comprising a first axle of wheels coupled to an output differential (3) of a main power train, and a second axle of wheels coupled to a bridge (4) mechanically connected to the output differential (3) by a transmission shaft (6), and an electric traction machine (7), characterized in that the electric machine (7) is connected to the transfer shaft by a first coupler ( 9) and a gearbox (8).
    [0002]
    2. Hybrid traction chain according to claim 1, characterized in that the gear (8) 15 is disposed at the input of the bridge (4).
    [0003]
    3. Hybrid traction chain according to claim 1, characterized in that the gearbox (8) is disposed inside the deck housing (4).
    [0004]
    4. Hybrid drive chain according to claim 1, 2 or 3, characterized in that the gearbox (8) is mounted on the drive shaft (6).
    [0005]
    Hybrid drivetrain according to claim 1, characterized in that the first coupler (9) is arranged on the transmission shaft (6). 25
    [0006]
    Hybrid drive chain according to claim 5, characterized in that the first coupler (9) is arranged between the output differential (3) and the gearbox (8).
    [0007]
    Hybrid drive chain according to claim 5 or 6, characterized in that the second coupler (11) is arranged between the electric machine (7) and the gearbox (8).
    [0008]
    8. Hybrid traction chain according to one of the preceding claims, characterized in that the bridge (4) comprises an input ring (4a) receiving the movement of a crown gear (4b) mounted at the end of the transmission shaft (6).
    [0009]
    9. Four-wheel drive vehicle, characterized in that 3034715 - 6 - that its traction chain is in accordance with one of the preceding claims.
    [0010]
    10. Vehicle according to claim 9, characterized in that it has a four-wheel drive mode of thermal rolling when the first coupler (9) is closed and the second (11) is open.
    [0011]
    11. Vehicle according to claim 9 or 10, characterized in that it has a hybrid four-wheel drive mode, when the two couplers 10 (9, 11), are closed.
    [0012]
    Vehicle according to claim 9, 10 or 11, characterized in that it has a two-wheel drive electric mode, when the first coupler (9) is open, and the second coupler (11) is closed.
    [0013]
    13. Vehicle according to one of claims 9 to 12, characterized in that it has a four-wheel electric mode, when the two couplers (9, 11) are closed. 20
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3034715B1|2018-08-17|
    WO2016162609A1|2016-10-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6041877A|1995-09-29|2000-03-28|Fuji Jukogyo Kabushiki Kaisha|Drive unit for hybrid vehicle|
    US20090188732A1|2008-01-25|2009-07-30|Janson David A|Drive Unit for an Electric Hybrid Vehicle|
    US20090223725A1|2008-02-14|2009-09-10|Fernando Rodriguez|Hybrid electric conversion kit for rear-wheel drive, all wheel drive, and four wheel drive vehicles|
    US20140335995A1|2013-05-08|2014-11-13|GM Global Technology Operations LLC|Hybrid powertrain and modular rear drive unit for same|
    DE102016221880A1|2016-11-08|2018-05-09|Audi Ag|Drive device for a motor vehicle, corresponding motor vehicle and method for operating a drive device|
    DE102017210702A1|2017-06-26|2018-12-27|Zf Friedrichshafen Ag|Drive device for a motor vehicle|
    DE102018200948A1|2018-01-22|2019-07-25|Magna powertrain gmbh & co kg|Vehicle with transfer case and method for operating a vehicle with a transfer case|
    FR3101817A1|2019-10-11|2021-04-16|Idee Services|Power transmission assembly and vehicle including this assembly|
    法律状态:
    2016-04-21| PLFP| Fee payment|Year of fee payment: 2 |
    2016-10-14| PLSC| Publication of the preliminary search report|Effective date: 20161014 |
    2017-04-19| PLFP| Fee payment|Year of fee payment: 3 |
    2018-04-20| PLFP| Fee payment|Year of fee payment: 4 |
    2019-04-18| PLFP| Fee payment|Year of fee payment: 5 |
    2020-04-20| PLFP| Fee payment|Year of fee payment: 6 |
    2021-04-23| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1553149A|FR3034715B1|2015-04-10|2015-04-10|VEHICLE TRACTION CHAIN WITH HYBRID REAR BRIDGE AND FOUR WHEEL DRIVE VEHICLE|
    FR1553149|2015-04-10|FR1553149A| FR3034715B1|2015-04-10|2015-04-10|VEHICLE TRACTION CHAIN WITH HYBRID REAR BRIDGE AND FOUR WHEEL DRIVE VEHICLE|
    PCT/FR2016/050515| WO2016162609A1|2015-04-10|2016-03-04|Vehicle drivetrain with hybrid rear axle assembly and four-wheel drive vehicle|
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