Trailer brake gain in a towing configuration of a tow vehicle and a trailer is determined by providing, to a processor, trailer wheel rotation information. The processor provides trailer brake control signals at a plurality of different evaluation trailer brake gains. The processor determines the trailer brake gain based upon the trailer wheel rotation information corresponding to the plurality of different evaluation trailer brake gains.

An agricultural train assembly having a tractor and at least one implement coupled to the tractor through a tongue. The assembly has a tractor braking system that selectively applies tractor brakes, an implement braking system that selectively applies implement brakes, a controller that selectively applies the implement braking system, a sensor that communicates with the controller to identify a push force applied to the tongue, the push force being the amount of force applied by the at least one implement towards the tractor. Wherein, the controller communicates with the sensor to identify the push force and compares the push force to a push threshold and when the push force is greater than the push threshold, the controller instructs the implement braking system to apply a burst braking procedure.

A system for braking a trailer pulled by a vehicle. A trailer braking system is provided on a trailer. An electrically actuated motor drives a worm screw against a worm gear. The worm gear drives a brake actuator to push brake pads into a rotor coupled a wheel on the trailer. A wheel speed monitor reduces braking force of the trailer braking system in response to a predetermined change in wheel speed. An anti-lock braking system reduces trailer wheel skid under braking. Multiple trailer braking systems can be applied to multiple wheels on the trailer to provide more or less braking.

A trailer control valve for a tractor includes a body defining a supply port and first and second delivery ports. The supply port is configured for fluid communication with a fluid source on the tractor. The first and second delivery ports are configured for fluid communication with glad-hand connectors through which fluid is supplied from the tractor to a trailer. A pressure sensing solenoid receives fluid signal from each of the first and second deliver ports and selectively passes fluid signal therefrom to a pressure sensor as a function of a brake control signal received by a controller that controls the pressure sensing solenoid.

An electric system of a vehicle including an electronically controlled braking system. The electric system has a steering angle sensor unit, at least one control module, at least one first inertia sensor and an electronic braking system central control unit EBS ECU. The at least one control module is external to the steering angle sensor unit. The at least one control module is also external to the EBS ECU. At least one of the at least one control module has mounted within it one of the at least one first inertia sensor.

A brake control unit includes a processor, a first high side driver and a second high side driver. The processor sends signals to the first high side driver and the second high side driver. The first and second high side drivers process the signals independent of each other. The processor diagnoses faults and locations of faults based on feedback from the high side drivers. The first high side driver controls the braking of a first trailer brake. The second high side driver controls the braking of a second trailer brake.

A method for enabling a V2V communications link between a trailer and a first tow vehicle including receiving a towing system activation control signal, transmitting a tow vehicle request, receiving a first tow vehicle response including a first tow vehicle location and a first tow vehicle identifier, determining a first distance between the first tow vehicle and the trailer, and enabling the V2V communications link in response to the first distance being less than a threshold distance.

The disclosure provides a trailer brake system that includes a sensor system and a brake control unit. The sensor system is supported by a trailer and includes at least one wheel speed sensor associated with each wheel of the trailer. The brake control unit is supported by the trailer and is in communication with a tow vehicle configured to tow the trailer. The brake control unit is configured to: receive sensor data from the sensor system, and receive a brake signal from the tow vehicle indicative of a driver pressing a brake pedal of the tow vehicle. The brake control unit is also configured to: determine, for each brake, a hydraulic pressure based on the sensor data and the brake signal; and apply pressure by way of brake lines to the brake associated with each wheel, based on the hydraulic pressure.

A method for electronically controlling a vehicle deceleration of a brake slip-controlled vehicle comprising a pneumatic braking system includes detecting that at least one wheel of the vehicle has a brake slip that exceeds a setpoint brake slip; in response to detecting that at least one of the wheels of the vehicle has a brake slip that exceeds the setpoint brake slip, brake slip-controlling the at least one wheel in order to prevent a lockup of the at least one wheel; determining a braking effect caused by wheel brakes on the wheels of the vehicle; and adjusting brake pressures output at the wheel brakes of one or more non-brake slip-controlled wheels in order to adjust the induced braking effect. The brake pressures at the wheel brakes of all non-brake slip-controlled wheels are adjusted.

An electropneumatic brake system, for a commercial vehicle which is provided for pulling a trailer, includes at least one service brake circuit configured to activate service brake actuators, a parking brake circuit having parking brake actuators on at least one axle, a trailer brake circuit configured to provide a trailer brake pressure at a trailer brake pressure port, and a manually actuatable operating unit in a driver's cab. The manually actuatable operating unit has a first operating element and a second operating element. In the case of actuation of the first operating element when the vehicle is driving, the parking brake actuators are activated and a trailer brake pressure is output at the trailer brake pressure port. In the case of actuation of the second operating element when the vehicle is driving, only a trailer brake pressure is output.