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    • 8. 发明公开
    • VEHICLE AND METHOD AND SYSTEM OF CONTROLLING A VEHICLE
    • 车辆和控制车辆的方法和系统
    • EP2675647A1
    • 2013-12-25
    • EP12712593.8
    • 2012-02-20
    • Jaguar Land Rover Limited
    • STARES, Pete
    • B60K23/08B60K17/34B60K17/35B60W50/00
    • B60K23/08B60K17/34B60K17/35B60K2023/0858B60W10/119B60W10/14B60W10/16B60W2050/0019B60W2050/0042B60W2520/00B60W2520/263B60W2540/00B60W2550/00B60W2710/021B60W2710/023
    • A controller (40), method of control, and motor vehicle (1) are provided. The controller (40) is for controlling a driveline (105,5) of a motor vehicle (1) to transition between first and second modes of operation, wherein a first group of one or more wheels and not a second group of one or more wheels is connected to a torque transmission (118) path from the prime mover means when the driveline (105,5) is in the first mode of operation and both the first and second groups of one or more wheels are connected to the torque transmission (118) path when the driveline (105,5) is in the second mode of operation, wherein the second group of one or more wheels is connected to the torque transmission (118) path by means of an auxiliary portion (10,110) comprising first and second releasable torque transmitting means and a prop shaft (123,23), the first releasable torque transmitting means being operable to connect a first end of the prop shaft (123,23) to the torque transmission (118) path, the second releasable torque transmitting means being operable to connect a second end of the prop shaft (123,23) to the second group of one or more wheels. The controller is configured to: control the auxiliary portion (10,110) to switch the driveline (105,5) between the first and second modes of operation such that in the first mode the prop shaft (123,23) is disconnected from both the torque transmission (118) path and said second group of one or more wheels; control the driveline (105,5) to transition from the first mode to the second mode when a second mode trigger condition is met, the second mode trigger condition including the requirement that the magnitude of the value of a vehicle (101,1) operating parameter of a first set of one or more vehicle (101,1) operating parameters is less than or greater than a first threshold (A1, T2) value; and control the driveline (105,5) to subsequently transition from the second mode to the first mode when a first mode trigger condition is met, the first mode trigger condition including the requirement that the magnitude of the value of said vehicle (101,1) operating parameter of the first set is greater than or less than a second threshold (A1, T2) value, the second threshold (A1, T2) value having a value different from the first threshold (A1, T2) value, wherein values of the first and/or second threshold (A1, T2) values are responsive to a value of a vehicle (101,1) operating temperature parameter.
    • 全地形汽车包括发动机11,其可以通过离合器17,变速箱18和用于驱动轴19的一对连接到前轮12,13和将发动机连接到后轮14,15的辅助动力传动系统10。 辅助动力传动系统10包括动力传递单元24,动力传递单元24具有动力传递离合器22,动力传递离合器22将主驱动轴23联接到变速箱18.在第一模式中,前轮12,13可以由发动机11驱动,并且在第二模式中 后轮14,15可以另外由发动机11驱动,使得车辆是四轮驱动模式。 控制器40确定至少一个车辆操作参数,例如, 温度,并存储车辆运行参数的第一和第二阈值。 在第二模式中,动力传递离合器22断开,使得当满足条件时,车辆转换到第一模式,即运行参数的值在与第一方向相反的第二方向上通过第二阈值,从而 减少模式抖动。