A method for controlling vehicle braking of a wheel rotor having a brake pad associated therewith includes moving a piston into engagement with the brake pad by applying hydraulic pressure to the piston. The piston is locked in place against the brake pad with a parking brake. The hydraulic pressure is removed from the piston while the parking brake is locked.

A towing device operably provided on a trailer for powering and controlling the trailer. The towing device has an actuator operably connected with the trailer during a towing operation. The towing device also has at least one switch provided in the actuator and operable to variably control at least one motor/generator provided on the trailer. The at least one switch is also operable to send a first signal to the at least one motor/generator via a first force exerted on the actuator by a vehicle, and wherein a first torque is applied to at least one wheel on the trailer via the at least one motor/generator being operably engaged with the at least one wheel. In addition, the towing device may include a controller operably connected to the at least one switch and to the at least one motor/generator, to control the torque applied by the at least one motor/generator.

In a method for controlling a hydraulic brake system in a vehicle, wherein the hydraulic brake system is equipped with a hydraulic pump, the hydraulic pump is activated to hold the vehicle at rest and brake fluid is conveyed via open inlet valves to the wheel braking device of a first vehicle axle. The inlet valves on wheel braking devices of a second vehicle axle are at least partially open in response to a change in the brake pressure requirement in the brake system, and at the same time the outlet valves on said wheel braking devices remain closed while the vehicle is being held at rest.

A method and a system for monitoring wear of a braking frictional pad of a motor vehicle, the motor vehicle including a brake device acting on a vehicle wheel, the brake device including a braking frictional pad that is non-rotatable relative to the vehicle wheel and is linearly movable parallel to a rotational axis of the vehicle wheel; a brake piston configured to drive the braking frictional pad; and an electric parking brake or an electric mechanical brake, the electric parking brake or the electric mechanical brake having a drive motor and a piston driving part driven by the drive motor to be linearly movable, the piston driving part being configured to, when the motor vehicle is braking, drive the brake piston to contact the braking frictional pad and in turn drive the braking frictional pad to move.

This braking control device feeds by pressure a braking fluid from a master cylinder to a wheel cylinder, to generate a braking force in a wheel. The braking control device is provided with an input rod; an output rod; first and second electric motors; and first and second racks forming a differential mechanism. When the outputs of the first and second electric motors are controlled, the operation power of the input rod and the displacement of the output rod are controlled independently of each other. Here, in the second rack, the movement, in a backward direction, in response to decrease of a master cylinder fluid pressure is limited within a range of a predetermined displacement by means of two stoppers.

An apparatus includes a control apparatus for an electric vehicle. The control apparatus outputs an instruction to reduce the first regenerative braking force according to the physical amount regarding the stroke of the brake pedal to the electric motor. The control apparatus also outputs an instruction to add a braking force corresponding to a third regenerative braking force, which is a regenerative braking force corresponding to an amount of the reduction in the first regenerative braking force, to the brake actuation braking force when the signal regarding the pressing of the brake pedal is input after the signal regarding the return of the pressed accelerator pedal is input.

A powered axle for a work vehicle with a dual wheel arrangement includes an axle housing, an axle hub mounted to the axle housing, and an output hub having opposite axial ends supported by one or more wheel bearings for rotation about the axle hub along a rotation axis. An electric drive is disposed, at least in part, within the axle housing, and a hub gear set is disposed, at least in part, within the axle hub and configured to transmit power from the electric drive to the output hub for rotation of the dual wheel arrangement. A wheel brake disposed radially between the axle hub and the output hub and axially between the ends of the output hub is configured to selectively permit and arrest rotation of the output hub.

A brake caliper has a fixed seat. The fixed seat has a first brake lining and a second brake lining. The fixed seat further has a first piston and a second piston that can be pushed by hydraulic oil. A movable seat is slidably disposed on the fixed seat. The movable seat has a link portion that can link the first brake lining and a drive unit that can push the second piston mechanically. The first piston and the second piston can be pushed hydraulically to drive the first brake lining and the second brake lining for braking. The drive unit pushes the second piston to drive the second brake lining, and pushes the movable seat to drive the first brake lining for braking.

In the case of a method for determining the braking force in an electromechanical brake device having a brake motor, the braking force is determined from a prevailing load current that is determined from the difference between the measured motor current and the calculated switch-on current.

An electro-hydraulic actuator includes: a motor output rotative power; an external gear pump activated by the motor; a hydraulic actuator operated by a pressurized working fluid supplied by the external gear pump; a manifold block in which a flow channel forming a working fluid circuit of the hydraulic actuator is incorporated; a first portion to store the motor; a second portion to store the external gear pump, the hydraulic actuator, and a reservoir; and a coupling portion to couple the first portion and the second portion in a liquid-tight state. The coupling portion includes a communication hole through which the first portion and the second portion communicate, a rotational shaft of the motor and a driving shaft of the external gear pump are joined to each other, and the external gear pump is attached to the coupling portion while being stored in the manifold block.