Abstract: Apparatus including a brake control assembly having a brake fluid accumulator assembly. The brake fluid accumulator assembly includes a brake fluid orifice, at least one brake-fluid-accumulating piston bore, a controllable bi-directional motor, and at least one piston. The brake fluid orifice is fluidly connectable to a brake apply master cylinder and is fluidly connectable to a wheel brake. The at-least-one brake-fluid-accumulating piston bore is fluidly connected to the brake fluid orifice. The motor has a first motor driving direction and an opposite second motor driving direction. The at-least-one piston is each positioned in and slidable within a corresponding brake-fluid-accumulating piston bore and is each movable by the motor, in the first motor driving direction, to move in compression within the corresponding brake-fluid-accumulating piston bore.

Abstract: Apparatus including a brake control assembly having a brake fluid accumulator assembly. The brake fluid accumulator assembly includes a brake fluid orifice, at least one brake-fluid-accumulating piston bore, a controllable bi-directional motor, and at least one piston. The brake fluid orifice is fluidly connectable to a brake apply master cylinder and is fluidly connectable to a wheel brake. The at-least-one brake-fluid-accumulating piston bore is fluidly connected to the brake fluid orifice. The motor has a first motor driving direction and an opposite second motor driving direction. The at-least-one piston is each positioned in and slidable within a corresponding brake-fluid-accumulating piston bore and is each movable by the motor, in the first motor driving direction, to move in compression within the corresponding brake-fluid-accumulating piston bore.

Abstract: A control system for actuating a trailer braking system on a trailer is disclosed. The control system includes a trailer brake controller in communication with an antilock braking controller and an electronic stability controller of a towing vehicle to receive a wheel speed, a brake pressure, a yaw rate, a lateral acceleration, and a steering angle. The trailer brake controller utilizes the wheel speed, the brake pressure, the yaw rate, the lateral acceleration, and the steering angle to determine the attitude of the towing vehicle, and to calculate a desired braking force for the trailer. The trailer brake controller sends an appropriate output to actuate the trailer braking system on the trailer to stabilize the towing vehicle during extreme braking conditions.

Abstract: An apparatus and method are provided for operating a pump-less rear wheel anti-lock brake system of a vehicle using speed sensors on at least one front and one rear wheel, to provide a true dynamic rear proportioning (DRP) function, and to significantly enhance braking performance in rear wheel anti-lock mode through better management of the volume of pressurized fluid supplied by the master cylinder using rear pressure control (RPC).

Abstract: A braking system including a master cylinder, a brake subsystem for applying pressure to a brake rotor, and an apply conduit configured to selectively to allow the flow of fluid therethrough. The apply conduit selectively allows fluid to flow from the master cylinder to the brake subsystem to thereby cause the brake subsystem to apply or increase pressure to the brake rotor. The braking system further includes a bypass conduit configured to selectively allow the flow of fluid therethrough from the master cylinder to the brake subsystem to thereby cause the brake subsystem to apply pressure to the brake rotor.

Abstract: An apparatus and method are provided for operating a pump-less rear wheel anti-lock brake system of a vehicle using speed sensors on at least one front and one rear wheel, to provide a true dynamic rear proportioning (DRP) function, and to significantly enhance braking performance in rear wheel anti-lock mode through better management of the volume of pressurized fluid supplied by the master cylinder using rear pressure control (RPC).

Abstract: An electro-hydraulic pump assembly for a controlled braking system utilizes an eccentric pump drive apparatus including a pump drive shaft having a first end thereof adapted for attachment of an eccentric, and an eccentric attached to the first end of the pump drive shaft. The pump drive shaft defines a centerline thereof, and a bore extending from a first end of the shaft parallel to and displaced an offset distance from the centerline. The eccentric includes a drive element and a stem extending from the drive element for a press fit into the bore of the shaft. The bore extends into the shaft beyond the end of the stem of the eccentric, forming a void inside the shaft for balancing the shaft so that no counterweights need to be added to the eccentric drive apparatus. The pump drive shaft and eccentric are fabricated from straight-cut cylindrical stock by simple turning, drilling, and cylindrical grinding operations.

Abstract: A grommet for a bore in a hydraulic modulator comprises a plurality of ribs disposed about a periphery of the grommet, and a lip seal extending between the ribs. The ribs are adapted to engage the bore, and the lip seal is adapted to engage the bore at an interface to prevent passage of fluid in one direction past the interface.