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    Selective braking of four wheel steering vehicle
    61.
    发明授权
    Selective braking of four wheel steering vehicle 有权

    公开(公告)号：US11260901B2

    公开(公告)日：2022-03-01

    申请号：US16572987

    申请日：2019-09-17

    Applicant: HONDA MOTOR CO., LTD.

    Inventor： Ryosuke Yamazaki ,  Takumi Inagaki

    IPC: B62D6/00 ,  B62D7/14 ,  B62D15/02 ,  B60T8/172 ,  B60W10/184 ,  B60W10/20 ,  B60W40/068 ,  B60T8/24

    Abstract: A four wheel steering vehicle (1), in which front wheels (2f) and rear wheels (2r) can be steered in response to a steering input from a steering wheel (11), includes a rear wheel steering control unit (50) that variably controls a rear wheel steering device such that the rear wheels are steered in a prescribed relation to a steered angle of the front wheels. When the steering input is determined while the front wheel brake and the rear wheel brake are engaged, the rear wheel steering control unit disengages the rear wheel brake and steers the rear wheels. When the fore and aft inclination angle detected by an inclination sensor (40) provided on the vehicle is greater than a threshold value, the rear wheel steering control unit prohibits a steering of the rear wheels and keeps the rear wheel brake engaged even if the steering input is determined.

    UTILIZATION OF BRAKES AND TRANSMISSION SYSTEM TO AFFECT STEERING OF A VEHICLE AND METHOD THEREOF
    62.
    发明申请
    UTILIZATION OF BRAKES AND TRANSMISSION SYSTEM TO AFFECT STEERING OF A VEHICLE AND METHOD THEREOF 有权

    公开(公告)号：US20220024458A1

    公开(公告)日：2022-01-27

    申请号：US17499928

    申请日：2021-10-13

    Applicant: ALLISON TRANSMISSION, INC.

    Inventor： Michael York ,  Bruce E. Crum

    IPC: B60W30/18 ,  B60W10/12 ,  B60W10/184 ,  B60W10/20 ,  B60T8/48

    Abstract: A method of controlling a vehicle during a braking operation includes providing a first and a second brake actuator, a brake input device, a steer input device, and a cross-drive transmission having two outputs and a controller. The method includes detecting a first output speed at the first output and a second output speed at the second output, and receiving a brake input request and a steer input request. The method also includes determining a differential output speed based on the first output speed and the second output speed, and comparing the differential output speed to a first threshold, the brake input request to a second threshold, and the steer input request to a third threshold. The method includes determining the first or the second output is locked during the braking operation, and controlling the first or the second brake actuator based on which output is determined to be locked.

    POWERTRAIN FOR VEHICLE AND BRAKING CONTROL METHOD THEREOF
    63.
    发明申请
    POWERTRAIN FOR VEHICLE AND BRAKING CONTROL METHOD THEREOF 有权

    公开(公告)号：US20220009337A1

    公开(公告)日：2022-01-13

    申请号：US17035315

    申请日：2020-09-28

    Applicant: Hyundai Motor Company ,  Kia Motors Corporation

    Inventor： Min Ho Chae ,  Soon Ki Eo ,  Chon Ok Kim

    IPC: B60K6/445 ,  B60K6/365 ,  B60W30/18 ,  B60W10/184 ,  B60W10/08

    Abstract: A powertrain for a vehicle may include a motor; a planetary gear set mounted to rotate parallel to a rotation shaft of the motor so that one rotation element may exchange power with the motor; a front wheel driveshaft engaged to the planetary gear set to receive power from another rotation element of the planetary gear set and to transfer a rotating force to a front wheel coupled to the front wheel driveshaft; and a rear wheel driveshaft engaged to the planetary gear set and mounted to receive power from the other rotation element of the planetary gear set to rotate parallel to the rotation shaft of the motor, and to transfer a rotating force to a rear wheel coupled to the rear wheel driveshaft.

    FOUR-WHEEL DRIVE VEHICLE
    64.
    发明申请
    FOUR-WHEEL DRIVE VEHICLE 有权

    公开(公告)号：US20210380111A1

    公开(公告)日：2021-12-09

    申请号：US17325365

    申请日：2021-05-20

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Atsushi TABATA ,  Koichi OKUDA ,  Yuuki MAKINO

    IPC: B60W30/18 ,  B60K17/02 ,  B60K17/356 ,  B60K17/35 ,  B60L7/18 ,  B60K1/04 ,  B60L15/20 ,  B60L7/26 ,  B60W10/08 ,  B60W10/184 ,  B60W10/02

    Abstract: A four-wheel drive vehicle includes: (a) main drive wheels and auxiliary drive wheels; (b) a rotating machine as a drive power source; (c) a drive-power distribution clutch configured to allocate a part of a drive power outputted to the main drive wheels from the drive power source, to the auxiliary drive wheels, so as to distribute the drive power to the main drive wheels and the auxiliary drive wheels with a drive-power distribution ratio between the auxiliary drive wheels and the main drive wheels, such that the drive-power distribution ratio is variable with an engaging force of the drive-power distribution clutch being controlled; and (d) a control apparatus configured, when determining that a heat load of the drive-power distribution clutch is large during deceleration running of the vehicle, to limit a regenerative torque of the rotating machine, as compared with when determining that the heat load is small.

    Independent control of vehicle wheels
    65.
    发明授权
    Independent control of vehicle wheels 有权

    公开(公告)号：US11136021B1

    公开(公告)日：2021-10-05

    申请号：US15787474

    申请日：2017-10-18

    Applicant: Zoox, Inc.

    Inventor： Joseph Funke ,  Johannes Edren ,  Ali Javidan ,  Jacob Lee Askeland ,  Vasumathi Raman

    IPC: B60W30/04 ,  B60W30/18 ,  B60W10/20 ,  B62D7/06 ,  B62D17/00 ,  B60T8/24 ,  B60W10/184

    Abstract: An over actuated system capable of controlling wheel parameters, such as speed (e.g., by torque and braking), steering angles, caster angles, camber angles, and toe angles, of wheels in an associated vehicle. The system may determine the associated vehicle is in a rollover state and adjust wheel parameters to prevent vehicle rollover. Additionally, the system may determine a driving state and dynamically adjust wheel parameters to optimize driving, including, for example, cornering and parking. Such a system may also dynamically detect wheel misalignment and provide alignment and/or corrective driving solutions. Further, by utilizing degenerate solutions for driving, the system may also estimate tire-surface parameterization data for various road surfaces and make such estimates available for other vehicles via a network.

    SYSTEMS AND METHODS FOR HAZARD MITIGATION
    68.
    发明申请
    SYSTEMS AND METHODS FOR HAZARD MITIGATION 有权

    公开(公告)号：US20210269022A1

    公开(公告)日：2021-09-02

    申请号：US17325444

    申请日：2021-05-20

    Applicant: David E. Newman ,  R. Kemp Massengill

    Inventor： David E. Newman ,  R. Kemp Massengill

    IPC: B60W30/09 ,  B60W30/095 ,  B60W50/16 ,  G08G1/16 ,  B60W10/20 ,  B60W30/085 ,  B60W50/14 ,  B60W50/12 ,  B60W10/18 ,  B60W10/184 ,  G05D1/02 ,  B60Q9/00 ,  B60W10/04

    Abstract: A system and method to avoid collisions on highways, and to minimize the fatalities, injury, and damage when a collision is unavoidable. The system includes sensor means to detect other vehicles, and computing means to evaluate when a collision is imminent and to determine whether the collision is avoidable. If the collision is avoidable by a sequence of controlled accelerations and decelerations and steering, the system implements that sequence of actions automatically. If the collision is unavoidable, a different sequence is implemented to minimize the overall harm of the unavoidable collision. The system further includes indirect mitigation steps such as flashing the brake lights automatically. An optional post-collision strategy is implemented to prevent secondary collisions, particularly if the driver is incapacitated. Adjustment means enable the driver to set the type and timing of automatic interventions.

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