SYSTEMS AND METHOD FOR AUTOMATICALLY CONTROLLING BRAKING AND WHEEL SPEED AT A DOLLY

    公开(公告)号:US20240174204A1

    公开(公告)日:2024-05-30

    申请号:US18072167

    申请日:2022-11-30

    CPC classification number: B60T8/1708 B60Q9/00 B60T7/20 B60T2250/00

    Abstract: The present disclosure provides systems and methods for automatically controlling braking and/or wheel speed at a dolly to increase maneuverability. In one form, a system comprises a memory, a first sensor, and at least one processor. The first sensor is configured to determine at least one of a distance from a dolly to a forward trailer or an angle from the dolly to the forward trailer. The at least one processor is configured to: determine that a forward trailer is moving in a reverse direction; determine a steering angle of a vehicle coupled to the forward trailer; measure a rotation of the forward trailer based on information received from the first sensor; and apply at least one of braking or wheel speed control to at least one wheel of the dolly based on the measured rotation of the forward trailer and the determined steering angle of the forward trailer.

    CHECKING AN ACTUAL-PRESSURE SENSOR OF A MOTOR VEHICLE BRAKE SYSTEM

    公开(公告)号:US20240149851A1

    公开(公告)日:2024-05-09

    申请号:US18493358

    申请日:2023-10-24

    CPC classification number: B60T13/683 B60T7/20

    Abstract: A method for checking an actual-pressure sensor of a motor vehicle brake system includes establishing the duration of a reaction interval, establishing a threshold value, operating the motor vehicle brake system in an electronic braking mode where the brake system delivers a braking pressure for operation of a trailer brake of a trailer connected to the motor vehicle. The reaction interval starts at the beginning of the braking process and pneumatic actual braking pressure values are measured by means of an actual-pressure sensor, where a starting braking pressure is measured by the actual-pressure sensor at the beginning of a braking process carried out in the electronic braking mode for the trailer. Pneumatic reaction braking pressures are measured within the reaction interval and compared to a threshold value. Brake system operation is discontinued in the electronic operating mode if none of the measured reaction braking pressures exceeds the threshold value.

    Method and system for control of trailer sway

    公开(公告)号:US11951964B2

    公开(公告)日:2024-04-09

    申请号:US17648501

    申请日:2022-01-20

    CPC classification number: B60T8/1708 B60T7/20 B60T8/1755 B60T2230/06

    Abstract: Methods and systems are provided for a vehicle towing a trailer. In an exemplary embodiment, one or more sensors onboard a vehicle are configured to provide sensor data, and a processor onboard the vehicle is configured to at least facilitate: monitoring a trailer sway of the trailer using the sensor data, based on one or more parameters of the sensor data representing the trailer sway and application of a band-pass filter to the one or more parameters; and mitigating the trailer sway, via instructions provided by the processor to one or more braking systems of the vehicle, the trailer, or both, when it is determined that the trailer sway of the trailer is sufficient to warrant mitigation based on the one or more parameters of the sensor data representing the trailer sway and the application of the band-pass filter to the one or more parameters.

    Control module of a tow vehicle for controlling a pneumatic braking system of a trailer vehicle

    公开(公告)号:US11827193B2

    公开(公告)日:2023-11-28

    申请号:US17215019

    申请日:2021-03-29

    CPC classification number: B60T13/683 B60T7/20 B60T13/263

    Abstract: A trailer control module (94) of a pressure-medium operated braking system of a tow vehicle has a valve assembly for controlling a pneumatic braking system of a trailer vehicle The valve assembly includes the following: an electronically controlled trailer control valve (6) which contains a pneumatically controlled relay valve (18) with an inverted control input (34); a pressure-medium controlled backup valve (8) which contains a pressure-medium controlled relay valve (54); and at least one electronically controlled parking brake valve (68, 70), via which the relay valve (18) of the trailer control valve (6) can be actuated pneumatically at its inverted control input (34). In addition, a coupling device (98) is present, by which the parking brakes of the tow vehicle can also be operated via the parking brake valve (68, 70).

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