EMERGENCY VEHICLE BRAKING USING CLOSED-LOOP PULSING

    公开(公告)号:US20220266806A1

    公开(公告)日:2022-08-25

    申请号:US17183779

    申请日:2021-02-24

    申请人: Textron Inc.

    摘要: A technique controls an electric brake of a vehicle. The technique involves continuously providing power to the electric brake of the vehicle to continuously disengage the electric brake and allow the vehicle to move. The technique further involves, while power is continuously provided to the electric brake and the vehicle is moving, sensing a fault condition. The technique further involves, in response to sensing the fault condition, providing electric pulses to the electric brake in place of continuously providing power to the electric brake, the electric pulses having varying pulse timing that controls braking of the vehicle. Accordingly, the vehicle is able to provide a more consistent braking response regardless of variations in certain factors such as brake calibration and/or current wear, the current weight in the vehicle, the current temperature, etc.

    CONTROLLING REGENERATIVE BRAKING TO REDUCE SKIDDING OF A VEHICLE

    公开(公告)号:US20230256831A1

    公开(公告)日:2023-08-17

    申请号:US18140859

    申请日:2023-04-28

    申请人: Textron, Inc.

    IPC分类号: B60L7/18 B60L7/14

    CPC分类号: B60L7/18 B60L7/14 B60L3/108

    摘要: A technique provides power-limiting regenerative braking to a utility vehicle. The technique involves detecting that the utility vehicle is moving in a forward direction at a first speed. The technique further involves applying a first regenerative braking power level to the utility vehicle in response to detecting that the utility vehicle is moving in the forward direction at the first speed. The technique further involves detecting that the utility vehicle is moving in the forward direction at a second speed which is less than the first speed. The technique further involves applying a second regenerative braking power level to the utility vehicle in response to detecting that the utility vehicle is moving in the forward direction at the second speed. The second regenerative braking power level is lower than the first regenerative braking power level.

    INTEGRATED STARTER-GENERATOR
    3.
    发明申请

    公开(公告)号:US20220306073A1

    公开(公告)日:2022-09-29

    申请号:US17840101

    申请日:2022-06-14

    申请人: Textron Inc.

    摘要: A method for remotely controlling the operation of a gas powered golf car, wherein the method comprises, via a global positioning system enhanced fleet management system (GPSEFMS) of the golf car communicatively connected with an internal combustion engine control unit (ECU) and a global position sensor of the golf car: monitoring a location of the golf car as the golf car is moving utilizing geospatial position data communicated from a global position sensor of the golf car to the GPSEFMS; determining when the golf car is one of near or within a geofenced area; and sending control commands to the ECU instructing the ECU to modify operation of the internal combustion engine, and hence operation of the golf car, in accordance with a predetermined operation profile specific to the geofenced area.

    Integrated starter-generator
    4.
    发明授权

    公开(公告)号:US11378048B2

    公开(公告)日:2022-07-05

    申请号:US16864274

    申请日:2020-05-01

    申请人: Textron Inc.

    摘要: A prime mover for a lightweight vehicle comprising an internal combustion engine, a starter motor integrally integrated with the internal combustion engine, and a housing for the prime mover. The prime mover additionally comprises a Hall Effect sensor and an prime mover control module structured and operable to communicate with the Hall Effect sensor, determine when operation of the internal combustion engine should cease, and upon the determination that operation of the internal combustion engine should cease, utilize the communication from the Hall Effect sensor to stop the internal combustion engine such that a piston of the internal combustion engine is positioned at between 15° and 25° after bottom-dead-center.

    CONTROLLING REGENERATIVE BRAKING TO REDUCE SKIDDING OF A VEHICLE

    公开(公告)号:US20210197672A1

    公开(公告)日:2021-07-01

    申请号:US16731360

    申请日:2019-12-31

    申请人: Textron, Inc.

    IPC分类号: B60L7/18 B60L7/14

    摘要: A technique controls regenerative braking to reduce skidding of a vehicle. Such a technique involves imparting rotation to an alternating current (AC) electric motor to move the vehicle to a first commanded vehicle speed; applying a regenerative braking power to the AC electric motor to bring the vehicle to a second commanded vehicle speed; while applying the regenerative braking power, adjusting the level of regenerative braking power applied to follow a predetermined speed reduction rate; while adjusting the level of regenerative braking power applied, provide a limit to the maximum level of regenerative braking power available; and while providing the limit to the maximum level of regenerative braking power available, adjusting the limit to the maximum level of regenerative braking power available based on a current speed of the vehicle.

    INTEGRATED STARTER-GENERATOR
    6.
    发明申请

    公开(公告)号:US20200182213A1

    公开(公告)日:2020-06-11

    申请号:US16212190

    申请日:2018-12-06

    申请人: Textron Inc.

    IPC分类号: F02N11/08 F02N19/00 F02N11/04

    摘要: A prime mover for a lightweight vehicle comprising an internal combustion engine, a starter motor integrally integrated with the internal combustion engine, and a housing for the prime mover. The prime mover additionally comprises a Hall Effect sensor and an prime mover control module structured and operable to communicate with the Hall Effect sensor, determine when operation of the internal combustion engine should cease, and upon the determination that operation of the internal combustion engine should cease, utilize the communication from the Hall Effect sensor to stop the internal combustion engine such that a piston of the internal combustion engine is positioned at between 15° and 25° after bottom-dead-center.

    INTEGRATED STARTER-GENERATOR
    7.
    发明申请

    公开(公告)号:US20200256303A1

    公开(公告)日:2020-08-13

    申请号:US16864274

    申请日:2020-05-01

    申请人: Textron Inc.

    IPC分类号: F02N11/08 F02N11/04 F02N19/00

    摘要: A prime mover for a lightweight vehicle comprising an internal combustion engine, a starter motor integrally integrated with the internal combustion engine, and a housing for the prime mover. The prime mover additionally comprises a Hall Effect sensor and an prime mover control module structured and operable to communicate with the Hall Effect sensor, determine when operation of the internal combustion engine should cease, and upon the determination that operation of the internal combustion engine should cease, utilize the communication from the Hall Effect sensor to stop the internal combustion engine such that a piston of the internal combustion engine is positioned at between 15° and 25° after bottom-dead-center.

    INTEGRATED STARTER-GENERATOR
    8.
    发明申请

    公开(公告)号:US20200180595A1

    公开(公告)日:2020-06-11

    申请号:US16563457

    申请日:2019-09-06

    申请人: Textron Inc.

    摘要: A method for maintaining a state of charge in a gas powered golf car, wherein the method comprises via an integrated starter control unit: continuously monitoring a state of charge of the battery; and continuously controlling operation of a generator based on the continuously monitored state of charge of the battery to thereby continuously maintain the state of charge of the battery within a desired range. A method for remotely controlling the operation of a gas powered golf car, wherein the method comprises using geospatial position data to monitor a location of the golf car and determine when the golf car is near or within a geofenced area, and then instructing an engine control unit to modify operation of the internal combustion engine in accordance with a predetermined operation profile specific to the geofenced area.

    Controlling regenerative braking to reduce skidding of a vehicle

    公开(公告)号:US11673474B2

    公开(公告)日:2023-06-13

    申请号:US16731360

    申请日:2019-12-31

    申请人: Textron, Inc.

    摘要: A technique controls regenerative braking to reduce skidding of a vehicle. Such a technique involves imparting rotation to an alternating current (AC) electric motor to move the vehicle to a first commanded vehicle speed; applying a regenerative braking power to the AC electric motor to bring the vehicle to a second commanded vehicle speed; while applying the regenerative braking power, adjusting the level of regenerative braking power applied to follow a predetermined speed reduction rate; while adjusting the level of regenerative braking power applied, provide a limit to the maximum level of regenerative braking power available; and while providing the limit to the maximum level of regenerative braking power available, adjusting the limit to the maximum level of regenerative braking power available based on a current speed of the vehicle.

    Performing temperature control on a lithium battery of a vehicle

    公开(公告)号:US11133537B2

    公开(公告)日:2021-09-28

    申请号:US16237067

    申请日:2018-12-31

    申请人: Textron, Inc.

    摘要: A technique is performed on a vehicle having a lithium battery and a temperature control apparatus. The technique involves receiving a temperature reading from temperature sensing circuitry. The technique further involves performing a comparison operation that compares the temperature reading from the temperature sensing circuitry to a target temperature range. The technique further involves, in response to a result of the comparison operation indicating that the temperature reading is outside the target temperature range, automatically providing electric power from an external battery charger to the temperature control apparatus of the vehicle. The external battery charger is distinct and separate from the vehicle. Additionally, the temperature control apparatus adjusts the temperature of the lithium battery of the vehicle in response to the electric power automatically provided from the external battery charger (e.g., heating or cooling the lithium battery to improve battery capacity and preserve battery life).