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发明公开
CN103517820A 车辆以及控制车辆的动力传动系的方法和系统 有权

车辆以及控制车辆的动力传动系的方法和系统
摘要：
本发明的实施方式提供了一种机动车辆，其具有：原动机装置；至少第一和第二组一个或多个车轮；以及动力传动系，动力传动系可操作成将原动机装置连接至第一和第二组一个或多个车轮，使得当动力传动系处于第一运行模式中时第一组一个或多个车轮而非第二组联接至源自原动机装置的扭矩传输路径，而当动力传动系处于第二运行模式中时第一和第二组一个或多个车轮都联接至源自原动机装置的扭矩传输路径，动力传动系包括用于将第二组连接至源自原动机装置的扭矩传输路径的辅助部分，辅助部分包括第一和第二可释放扭矩传输装置以及后驱传动轴，第一可释放扭矩传输装置可操作成将后驱传动轴的第一端部连接至源自原动机装置的扭矩传输路径，第二可释放扭矩传输装置可操作成将后驱传动轴的第二端部连接至第二组一个或多个车轮，车辆还包括控制装置，控制装置可操作成控制第一和第二扭矩传输装置以在第一运行模式与第二运行模式之间切换动力传动系，使得在第一模式中后驱传动轴与源自原动机装置的扭矩传输路径及第二组一个或多个车轮都断开连接，其中，当在第一模式中时，车辆可操作成响应于车速来控制动力传动系以从第一模式切换到第二模式。
摘要（英）：

Embodiments of the present invention provide a motor vehicle having: a prime mover means; at least first and second groups of one or more wheels; and a driveline operable to connect the prime mover means to the first and second groups of one or more wheels such that the first group of one or more wheels and not the second group is coupled to a torque transmission path from the prime mover means when the driveline is in a first mode of operation and both the first and second groups of one or more wheels are coupled to a torque transmission path from the prime mover means when the driveline is in a second mode of operation, the driveline including an auxiliary portion for connecting the second group to the torque transmission path from the prime mover means, the auxiliary portion comprising first and second releasable torque transmitting means and a prop shaft, the first releasable torque transmitting means being operable to connect a first end of the prop shaft to the torque transmission path from the prime mover means, the second releasable torque transmitting means being operable to connect a second end of the prop shaft to the second group of one or more wheels, the vehicle further comprising control means operable to control the first and second torque transmitting means to switch the driveline between the first and second modes of operation such that in the first mode the prop shaft is disconnected from both the torque transmission path from the prime mover means and said second group of one or more wheels, wherein when in the first mode the vehicle is operable to control the driveline to switch from the first mode to the second mode responsive to a speed of the vehicle.

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