Vehicle drive system
    1.
    发明授权

    公开(公告)号:US10442282B2

    公开(公告)日:2019-10-15

    申请号:US15667162

    申请日:2017-08-02

    Abstract: A vehicle drive system includes a left-wheel drive unit having a first motor and a first transmission, a right-wheel drive unit having a second motor and a second transmission, and a motor control unit. Each of the first and second transmissions has a first to third rotational elements. The first motor is connected to the first rotational element of the first transmission. The second motor is connected to the first rotational element of the second transmission. The left wheel is connected to the second rotational element of the first transmission. The right wheel is connected to the second rotational element of the second transmission. The third rotational element of the first transmission and the third rotational element of the second transmission are coupled to each other. Each of the first and second transmissions has a fourth rotational element which is supported to revolve around by the second rotational element.

    Torque control device for four-wheel-drive vehicle

    公开(公告)号:US11364799B2

    公开(公告)日:2022-06-21

    申请号:US16468102

    申请日:2017-12-04

    Abstract: Provided is a torque control device for a four-wheel-drive vehicle that can stably output a minimum torque required to start or drive the vehicle to the auxiliary wheel side under a road surface condition that main driving wheels are stuck in the idling state or under a road surface condition equivalent thereto. When front wheels Wf1, Wf2 are judged to be stuck in the idling state, a current rear torque TrCMD is raised step by step. And, when a brake operates in the state in which the four wheels are at stop after raising the command torque TrCMD step by step, the command rear torque TrCMD is released. And, the command rear torque TrCMD is raised step by step when the command rear torque TrCMD continues to be released for a second threshold time.

    TORQUE CONTROL DEVICE FOR FOUR-WHEEL-DRIVE VEHICLE

    公开(公告)号:US20190299779A1

    公开(公告)日:2019-10-03

    申请号:US16468102

    申请日:2017-12-04

    Abstract: Provided is a torque control device for a four-wheel-drive vehicle that can stably output a minimum torque required to start or drive the vehicle to the auxiliary wheel side under a road surface condition that main driving wheels are stuck in the idling state or under a road surface condition equivalent thereto. When front wheels Wf1, Wf2 are judged to be stuck in the idling state, a current rear torque TrCMD is raised step by step. And, when a brake operates in the state in which the four wheels are at stop after raising the command torque TrCMD step by step, the command rear torque TrCMD is released. And, the command rear torque TrCMD is raised step by step when the command rear torque TrCMD continues to be released for a second threshold time.

    SLIP DETERMINATION SYSTEM FOR VEHICLE
    7.
    发明申请
    SLIP DETERMINATION SYSTEM FOR VEHICLE 有权
    车辆SLIP决定系统

    公开(公告)号:US20160318400A1

    公开(公告)日:2016-11-03

    申请号:US15105300

    申请日:2014-12-16

    Abstract: A slip determination system for a vehicle, which is capable of improving the determination accuracy by avoiding erroneous determination of excessive slip of wheels when a state of the wheels, driven/braked by motors, is switched. In the slip determination system according to the present invention, when first and second motor rotational speeds NMOT1 and NMOT2, which are rotational speeds of rear motors which brake/drive rear wheels WRL and WRR, reach a reference rotational speed NMREF set based on wheel rotational speeds NWFL, NWFR, NWRL, and NWRR, it is determined that excessive slip has occurred in the rear wheels WRL and WRR. When the sign of a target torque TROBJ of the rear motors is inverted, the reference rotational speed NMREF is changed to a value more difficult to be reached by the first and second motor rotational speeds NMOT1 and NMOT2, or the excessive slip determination is inhibited.

    Abstract translation: 一种用于车辆的滑动确定系统,其能够通过避免当由马达驱动/制动的车轮的状态被切换时通过避免错误地确定车轮的过度滑动来提高确定精度。 在根据本发明的滑移判定系统中,作为制动/驱动后轮WRL和WRR的后部电动机的转速的第一和第二电动机转速NMOT1和NMOT2达到基于车轮旋转设定的参考转速NMREF 速度NWFL,NWFR,NWRL和NWRR,确定后轮WRL和WRR发生过大的滑移。 当后电动机的目标转矩TROBJ的符号反转时,基准旋转速度NMREF变为难以通过第一和第二电动机转速NMOT1和NMOT2达到的值,或者禁止过度打滑判定。

    Vehicle drive device and method for controlling vehicle drive device
    9.
    发明授权
    Vehicle drive device and method for controlling vehicle drive device 有权
    用于控制车辆驱动装置的车辆驱动装置和方法

    公开(公告)号:US09114725B2

    公开(公告)日:2015-08-25

    申请号:US13853615

    申请日:2013-03-29

    Abstract: In a method of obtaining a rotation speed of a right wheel (RWr), the method includes: detecting a motor rotation speed detection value (LMa) using a resolver (20A); detecting a wheel rotation speed detection value (LWa) using a wheel speed sensor (13A); obtaining a ring gear rotation speed conversion value (Rb) based on the motor rotation speed detection value (LMa) and the wheel rotation speed detection value (LWa); detecting a motor rotation speed detection value (RMa) using the resolver (20B); obtaining a wheel rotation speed conversion value (RWb) based on the ring gear rotation speed conversion value (Rb) and the motor rotation speed detection value (RMa); detecting a wheel rotation speed detection value (RWa) using a wheel speed sensor (20B); and selecting the wheel rotation speed conversion value (RWb) or the wheel rotation speed detection value (RWa), whichever is greater, as the rotation speed of the right wheel (RWr).

    Abstract translation: 在获得右轮(RWr)的转速的方法中,所述方法包括:使用旋转变压器(20A)检测电动机转速检测值(LMa); 使用车轮速度传感器(13A)检测车轮转速检测值(LWa); 基于马达转速检测值(LMa)和车轮转速检测值(LWa)获得齿圈转速转换值(Rb); 使用旋转变压器(20B)检测电动机转速检测值(RMa); 基于齿圈转速转换值(Rb)和电动机转速检测值(RMa)获得车轮转速转换值(RWb); 使用车轮速度传感器(20B)检测车轮转速检测值(RWa); 并选择车轮转速转换值(RWb)或车轮转速检测值(RWa)(以较大者为准)作为右轮(RWr)的转速。

    Vehicle driving system
    10.
    发明授权
    Vehicle driving system 有权
    车辆驾驶系统

    公开(公告)号:US09002562B2

    公开(公告)日:2015-04-07

    申请号:US14056874

    申请日:2013-10-17

    Abstract: A vehicle driving system includes a slip detector that detects an occurrence of excess slipping; an additive/subtractive slip point calculator that time-discretely calculates an additive/subtractive slip point, which is an additive slip point or a subtractive slip point, on the basis detection or non-detection of an occurrence of excess slipping; a cumulative slip point calculator that sequentially calculates a cumulative slip point that is a cumulative sum of values of the additive/subtractive slip point; and a driving mode switcher that switches between a two-wheel driving mode and an all-wheel driving mode on the basis of the cumulative slip point. When excess slipping is detected, the additive/subtractive slip point calculator calculates the additive slip point on the basis of a driving force correlation value that correlates to a driving force a driving wheel for which the excess slipping has occurred.

    Abstract translation: 车辆驾驶系统包括:检测出多余滑动的滑动检测器; 基于对多次滑动的发生的检测或不检测,时间离散地计算作为附加滑移点或减法滑移点的加/减去滑点的加/减去滑点计算器; 累积滑点计算器,其顺序地计算作为所述加/减去滑点的值的累加和的累计滑点; 以及基于累积滑点在两轮驱动模式和全轮驱动模式之间切换的驱动模式切换器。 当检测到多余的滑动时,加法/减法滑移点计算器基于与已经发生多余滑动的驱动轮的驱动力相关的驱动力相关值来计算附加滑移点。

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