Electric equipment for a vehicle with an electropneumatic service brake device, in which at least one pneumatic brake control pressure is immediately and directly controlled to the electromagnetic backup valve, which is still being closed by a current, of at least one pressure regulating module in response to an assistance brake request signal regardless of a defect of an electric service brake circuit. For a failure of the electric service brake circuit, the electromagnetic backup valve, which is then in the currentless state, of the at least one pressure regulating module is automatically opened, and the brake pressure is immediately formed in the pressure regulating module based on the at least one pneumatic brake control pressure already present in the pressure regulating module. Thus, the reaction time of a pneumatic redundancy of the electropneumatic service brake device in response to electric defects is reduced.

A system for releasing the heavy-haul train has a control valve mounted in each of train cars. The control valve is connected to a train pipe, an auxiliary air reservoir and a brake cylinder are connected to the control valve, and an exhaust port is configured on the control valve. The exhaust port is connected to a solenoid valve. The method for improving the release performance of the heavy-haul train includes: S1: the solenoid valve in each of the train cars is powered on to close a passage between the exhaust port of the control valve and the atmosphere; S2: an automatic brake valve is regulated to inflate the train pipe; and S3: the solenoid valve in each of the train cars is powered off to open the passage between the exhaust port of the control valve and the atmosphere, so that the train is released.

A braking system, comprising an air reservoir, a first brake chamber, a first flow control device connected to the first brake chamber via a second fluid conduit, a second brake chamber, a second flow control device connected to the second brake chamber via a fourth fluid conduit, a third flow control device connected between the first flow control device and the first brake chamber, a parking brake sub-system configured to apply a parking brake when an air pressure falls below a threshold, and a control unit configured to control the third flow control device to maintain the pressure inside the first brake chamber, and each of the first flow control device and the second flow control device to allow air from the air reservoir arrangement to be discharged from the braking system, until the pressure provided by the air reservoir arrangement has fallen below the predefined parking brake threshold pressure.

A braking system, comprising an air reservoir, a first brake chamber, a first flow control device connected to the first brake chamber via a second fluid conduit, a second brake chamber, a second flow control device connected to the second brake chamber via a fourth fluid conduit, a third flow control device connected between the first flow control device and the first brake chamber, a parking brake sub-system configured to apply a parking brake when an air pressure falls below a threshold, and a control unit configured to control the third flow control device to maintain the pressure inside the first brake chamber, and each of the first flow control device and the second flow control device to allow air from the air reservoir arrangement to be discharged from the braking system, until the pressure provided by the air reservoir arrangement has fallen below the predefined parking brake threshold pressure.

One variation of a system includes a bogie including: a chassis; a first set of latches configured to transiently engage a first subset of engagement features, in a first array of engagement features on a left rail and in a second array of engagement features on a right rail of the trailer, to retain the bogie below a floor of the trailer; a driven axle suspended from the chassis; and a motor coupled to the driven axle and configured to output torque to the driven axle and regeneratively brake the driven axle. The system further includes a battery assembly: including a second set of latches configured to transiently engage a second subset of engagement features, in the first array of engagement features and in the second array of engagement features, to retain the battery assembly adjacent the bogie; and configured to receive electrical energy from the motor.

One variation of a system includes a bogie including: a chassis; a first set of latches configured to transiently engage a first subset of engagement features, in a first array of engagement features on a left rail and in a second array of engagement features on a right rail of the trailer, to retain the bogie below a floor of the trailer; a driven axle suspended from the chassis; and a motor coupled to the driven axle and configured to output torque to the driven axle and regeneratively brake the driven axle. The system further includes a battery assembly: including a second set of latches configured to transiently engage a second subset of engagement features, in the first array of engagement features and in the second array of engagement features, to retain the battery assembly adjacent the bogie; and configured to receive electrical energy from the motor.

A trailer control module for a brake device, more particularly an electronic parking brake device, for a commercial vehicle, includes at least one control piston and at least one housing, in which the control piston is accommodated. The housing has at least one control connection point and at least one feedback connection point for controlling the control piston. The housing also has at least one supply connection point, which is connected to at least one supply line for supplying pressure fluid to the trailer control module. The control piston can be controlled bistably by the control connection point and by the feedback connection point. A parking brake device, more particularly an electronic parking brake device, for a vehicle, includes at least one such trailer control module.

A trailer control module for a brake device, more particularly an electronic parking brake device, for a commercial vehicle, includes at least one control piston and at least one housing, in which the control piston is accommodated. The housing has at least one control connection point and at least one feedback connection point for controlling the control piston. The housing also has at least one supply connection point, which is connected to at least one supply line for supplying pressure fluid to the trailer control module. The control piston can be controlled bistably by the control connection point and by the feedback connection point. A parking brake device, more particularly an electronic parking brake device, for a vehicle, includes at least one such trailer control module.

A parking brake system for electrically controlling a parking brake of a vehicle is provided. The parking brake system includes a parking brake provided for each wheel, an air dryer controller, and an actuator. The air dryer controller is provided to an air dryer to electrically control the parking brake. The air dryer dries compressed air for use in the parking brake. The actuator is provided for each axle of the wheel to actuate the parking brake with the compressed air in accordance with an electric signal from the air dryer controller.

A parking brake system for electrically controlling a parking brake of a vehicle is provided. The parking brake system includes a parking brake provided for each wheel, an air dryer controller, and an actuator. The air dryer controller is provided to an air dryer to electrically control the parking brake. The air dryer dries compressed air for use in the parking brake. The actuator is provided for each axle of the wheel to actuate the parking brake with the compressed air in accordance with an electric signal from the air dryer controller.