Method for controlling an automatic transmission of a vehicle

    公开(公告)号:US12203543B2

    公开(公告)日:2025-01-21

    申请号:US18501183

    申请日:2023-11-03

    Abstract: A method for controlling an automatic transmission of a vehicle. The method includes determining a torque of an engine of the vehicle; performing at least one transmission operation comprising actuating a clutch of the transmission by increasing or decreasing a pressure of transmission fluid routed to the clutch; during actuating: determining an input speed and output speed of the clutch; determining that the clutch is slipping; while the clutch is slipping, recording the pressure of transmission fluid routed to the clutch; calculating a torque transmitted by the clutch; associating the pressure of the transmission fluid routed to the clutch with the torque transmitted by the clutch to generate a clutch pressure-torque pairing; iteratively recording the clutch pressure-torque pairing for torque values; continuously calculating an adaptive pressure-torque function of the clutch based on clutch pressure-torque pairings; and controlling the transmission based on the adaptive pressure-torque function of the clutch.

    AGRICULTURAL VEHICLE WITH IMPLEMENT-SPECIFIC OPERATIONAL PROFILES

    公开(公告)号:US20240188477A1

    公开(公告)日:2024-06-13

    申请号:US18079348

    申请日:2022-12-12

    CPC classification number: A01B71/06 F16H59/50 F16H61/00 F16H2061/0087

    Abstract: An agricultural vehicle includes a driveline, an interface, and a control system. The driveline includes an engine, a transmission, and a power take off (PTO). The interface is configured to removably couple an implement with the agricultural vehicle. The implement configured to perform an agricultural function. The control system includes processing circuitry configured to obtain an indication of a type of the implement that is removably coupled with the agricultural vehicle. The processing circuitry is also configured to determine a profile for at least the transmission based on the type of the implement that is removably coupled with the agricultural vehicle. The profile defines an operating parameter for at least the transmission such that the transmission operates in a specific manner for the type of the implement. The processing circuitry is also configured to operate at least the transmission according to the operating parameter of the profile.

    VEHICLE CONTROL DEVICE
    5.
    发明公开

    公开(公告)号:US20240042869A1

    公开(公告)日:2024-02-08

    申请号:US18492104

    申请日:2023-10-23

    Abstract: A vehicle control device includes an actuator drive control section that controls drive of an actuator, a main motor drive control section that controls drive of a main motor, and a stagnation determination section. The stagnation determination section determines a stagnation of the actuator based on a detected value of a sensor unit that detects a physical quantity that changes according to a drive state of the actuator. When performing a meshing surface pressure reduction control for reducing a meshing surface pressure generated at the meshing point between a parking gear and a parking lever by driving the main motor, the main motor drive control section decreases a main motor torque which is a torque of the main motor based on the detected value of the sensor unit.

    VEHICLE CONTROL SYSTEM
    6.
    发明公开

    公开(公告)号:US20230235819A1

    公开(公告)日:2023-07-27

    申请号:US18156356

    申请日:2023-01-18

    Abstract: A vehicle control system is provided. The vehicle control system includes a shift-by-wire device for shifting a shift gear of a speed variator mounted in a vehicle according to a requirement of an electrical signal; a vehicle speed detecting member for detecting a vehicle speed of the vehicle; a seat belt detecting member for detecting whether a seat belt provided in the vehicle is fastened or taken off; a door open/close member for detecting whether a door provided in the vehicle is opened or closed; a presence detecting member for detecting a presence state of a passenger in the vehicle; and an automatic parking control device for controlling the shift-by-wire device to shift the shift gear to a park gear when output results of one of the door open/close member and the presence detecting member, the vehicle speed detecting member, and the seat belt detecting member satisfy predetermined conditions.

    SHIFT APPARATUS
    7.
    发明申请

    公开(公告)号:US20210301917A1

    公开(公告)日:2021-09-30

    申请号:US17210477

    申请日:2021-03-23

    Abstract: A driver is enabled to, even if a range selected by the driver and an actual range of the vehicle are different from each other, correctly recognize the actual range of the vehicle without occurrence of disagreement between an indicated range and the actual range of the vehicle. A display means is capable of indicating a range irrespective of a rotation operation of a shift member, and a range of the vehicle is capable of being switched to the range irrespective of the rotation operation of the shift member; and an instruction to the display means and an instruction to switch the range of the vehicle are provided from either one of first control means for indication control or second control means for vehicle range switching control.

    Control device for continuously variable transmission

    公开(公告)号:US10746294B2

    公开(公告)日:2020-08-18

    申请号:US16320533

    申请日:2017-07-27

    Abstract: A control device for a continuously variable transmission includes a belt type continuously variable transmission and a controller. The controller is configured to calculate an actual gear shift ratio based on rotation speed sensor values from a primary rotation speed sensor and a secondary rotation speed sensor, and to perform gear shift ratio control using feedback control to converge the actual gear shift ratio to a target gear shift ratio. The controller is further configured to stop calculation of the actual gear shift ratio when one of the rotation speed sensor values is less than a first threshold value determined based on a lower limit value of sensor detection accuracy, and stop calculation of the actual gear shift ratio even when one of the rotation speed sensor values is the first threshold value or greater, when a deceleration level of the drive wheel is a prescribed deceleration level or greater.

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