Abstract: An electromechanical brake apparatus includes a housing supporting an inboard brake pad and an outboard brake pad for selective frictional contact with a rotor interposed longitudinally therebetween. The housing includes a mechanism cavity located longitudinally between the inboard pad and a motor having a sun gear motor output shaft. An adjuster ramp assembly indirectly receives torque from the motor. A spindle is provided for selectively moving the inboard brake pad longitudinally. The spindle is operatively connected with the adjuster ramp assembly to indirectly receive torque from the motor therethrough. A leading ramp assembly is configured to transmit applied torque from the motor to the adjuster ramp assembly. The leading ramp assembly receives stepped-up torque from the motor via the sun gear motor output shaft and a plurality of planet gears located radially between the sun gear motor output shaft and a toothed inner lumen of the leading ramp assembly.

Abstract: A stability control system of a vehicle utilizing an electronic control unit that detects a yaw condition while each of the wheel brakes are actuated by EBCM and the wheel speeds are zero. An electronic control unit includes an electronic braking control module that controls actuation and de-actuation of vehicle brakes on an inclined surface. A yaw condition is identified while all vehicle brakes are actuated on the inclined surface and each wheel speed is zero. The electronic control unit identifies which uphill wheel is leading a direction of the yaw and identifies a wheel of an opposing axle diagonal to the identified uphill wheel. The electronic control unit in cooperation with the electronic braking control module de-actuates the vehicle brakes of the identified uphill wheel and diagonal wheel to increase a side friction to the identified diagonal wheels to reduce further yawing of the vehicle.

Abstract: A brake pad for a vehicle disc brake assembly has a backing plate, a shim, and an adhesive bond between the backing plate and the shim that retains the shim on the backing plate. The backing plate is configured to support a brake lining and has a recessed portion with transverse first and second surfaces. The first surface is a bottom surface of the recessed portion and the second surface is a perimeter surface that defines a perimeter of the bottom surface. The shim has a face surface that is also transverse to the bottom surface. The face surface is configured to engage with the perimeter surface to mechanically restrain the shim in the recessed portion from lateral displacement.

Abstract: A disc brake assembly includes a brake clip having a U-shaped section, at least one retention tang, and an abutment leg. The U-shaped section has a base leg and opposing upper and lower legs extending from the base leg. The upper leg has an inner face facing the lower leg. The at least one tang extends away from the U-shaped section and inner face. The abutment leg extends from the lower leg and has a midpoint between a top edge and a bottom edge. The midpoint is not planar with the top and bottom edges.

Abstract: A brake system has a wheel brake and is operable under a non-failure normal braking mode and a manual push-through mode. The system includes a master cylinder operable by a brake pedal during a manual push-through mode to provide fluid flow at an output for actuating the wheel brake. A first source of pressurized fluid provides fluid pressure for actuating the wheel brake under a normal braking mode. A secondary brake module includes a plunger assembly for generating brake actuating pressure for actuating the wheel brake under the manual push-through mode.

Abstract: An electromechanical brake system includes a housing defining a mechanism cavity. An apparatus for force application includes a first piston, including a first piston motivator comprising a first push rod and an actuator. A brake pad is operatively connected to both the first and second pistons for longitudinal driving thereby. A rocker arm is operatively connected to both the first and second pistons for force transmission therebetween. A pivot bearing rotatably supports the rocker arm. The actuator is configured to move selectively longitudinally with respect to the first push rod to move at least a portion of the first piston toward the brake pad. The pivot bearing is maintained in a predetermined longitudinal position as a reaction force is developed between the first piston and the brake pad. The rocker arm transmits at least a portion of the reaction force from the first push rod to the second piston.

Abstract: This invention relates to a vehicle speed control system, configured with off-road performance features, that will allow the driver to travel at a set speed in a smooth, controlled manner on various unmaintained surfaces without requiring the driver to press the brake or accelerator pedal.

Abstract: A rotor yoke includes a casing attachment ring, a sensor ring, and an over-molded body disposed between the casing attachment ring and the sensor ring. The over-molded body couples the sensor ring to the casing attachment mechanism.

Abstract: A twin piston caliper with an electric parking brake and method of operating such a twin piston caliper with an electric parking brake. The twin piston caliper housing comprises two separate inner brake pads for each of the two pistons; one outer brake pad at the outer housing finger area; an electric parking brake mechanism configured to be incorporated in between the two pistons so that it is not embedded in the hydraulic piston and not the hydraulic brake fluid; and wherein the electric parking brake mechanism uses its own electric parking brake friction brake pad to clamp against the brake rotor.

Abstract: A brake system with a wheel brake has a fluid reservoir and a valve assembly in fluid communication with the reservoir via a first conduit. The valve assembly is in fluid communication with the wheel brake via a second conduit. The valve assembly includes a bypass valve which only permits fluid flow from the first conduit to the second conduit when the fluid pressure within the first conduit is above a predetermined pressure level above atmospheric pressure. The valve assembly further includes a check valve in a parallel path arrangement relative to the bypass valve such that the check valve permits fluid flow from the second conduit to the first conduit, and prevents fluid flow from the first conduit to the second conduit. The brake system further includes a first source of pressurized fluid providing fluid pressure for actuating the wheel brake, wherein the first source of pressurized fluid is selectively in fluid communication with the second conduit.

Abstract: A method of controlling the fluid pressure at wheel brakes of a brake system, the method comprising: (a) providing a brake system capable of delivering fluid pressure to the wheel brakes during an autonomous braking event, and wherein the brake system includes a brake pedal and sensor for sensing a driver's braking intent when applying force to the brake pedal; (b) controlling the fluid pressure at the wheel brakes at a predetermined pressure during an autonomous braking event, wherein the sensor detects no depression of the brake pedal; (c) cancelling the autonomous braking event when the sensor detects depression of the brake pedal; and (d) subsequently to step (c), the brake system enters into a handoff procedure to maintain the predetermined pressure at the wheel brakes after the sensor senses the brake pedal being depressed when a requested pressure by the driver is less than the predetermined pressure.

Abstract: A drum brake assembly includes a brake drum, a brake shoe and lining assembly operably displaceable to contact the brake drum, and an electric actuator assembly. The electric actuator assembly has an electric motor with an output shaft, a gear reduction driven by the output shaft, a linear translation assembly having a gear nut driven by the gear reduction, and a connection portion of the linear translation assembly. The output shaft drives the gear reduction through a suitable gear type that can convert a rotation torque of the output shaft to the gear reduction at a right angle. The linear translation assembly linearly translates when the gear nut is driven. As a result of the linear translation, the connection portion actuates the brake shoe and lining assembly to contact the brake drum.

Abstract: The invention relates to an improved plunger assembly for a vehicle brake system. The plunger assembly is operable as a pressure source to control brake fluid pressure supplied to one or more wheel brakes. The plunger assembly comprises a housing defining a cylinder; a reversible motor supported by the housing and having a rotor; and a linear actuator such as a ball screw/nut mechanism driven by the motor. A plunger head is mounted in the cylinder and driven by the linear actuator in first and second opposite directions. Improvements include a linear actuator rotationally supported on the housing by a bearing to actuate the plunger head connection to a ball screw.

Abstract: A brake system has a wheel brake and is operable under a non-failure normal braking mode and a manual push-through mode. The system includes a master cylinder operable by a brake pedal during a manual push-through mode to provide fluid flow at an output for actuating the wheel brake. A first source of pressurized fluid provides fluid pressure for actuating the wheel brake under a normal braking mode. A second source of pressurized fluid generates brake actuating pressure for actuating the wheel brake under the manual push-through mode.

Abstract: The invention relates to an improved plunger assembly for a vehicle brake system. The plunger assembly is operable as a pressure source to control brake fluid pressure supplied to one or more wheel brakes. The plunger assembly comprises a housing defining a cylinder; a reversible motor supported by the housing and having a rotor; and a linear actuator such as a ball screw/nut mechanism driven by the motor. A plunger head is mounted in the cylinder and driven by the linear actuator in first and second opposite directions. Improvements include the plunger assembly engage at least one seal that defines a portion of a pressurized chamber. An end cap covers the projecting end of the cylinder and is secured to the housing to define a fluid passageway between the end of the cylinder and at least one fluid passageway provided in the housing block.

Abstract: A diagnostic method to identify a leak in a simulator valve for a vehicle brake system comprising the steps of: (1) energizing a secondary three-way valve, a pumping valve, a simulator test valve, and a plurality of apply valves in order to maintain a pressure medium from a plunger assembly within a boost circuit; (2) applying a plunger in the plunger assembly to a predetermined pressure level; (3) holding the plunger in position within the plunger assembly; and (4) identifying a leak in a simulator valve via a signal from an ECU to a vehicle user interface if the pressure in the boost circuit deteriorates at or more than a pre-determined rate.

Abstract: A diagnostic method to identify a leak in a three-way valve for a vehicle brake system having a remote master cylinder which includes the steps of: (1) providing a pedal simulator having pressure medium; (2) de-energizing a secondary three-way valve; (3) retracting a dual acting plunger to the home position to drop the pressure in the boost circuit to zero while also monitoring the pressure at the output of a fluid separator via a secondary master cylinder pressure sensor; (4) determining a rate of pressure reduction at the output of a fluid separator via a secondary master cylinder pressure sensor; and (5) identifying a leak in at least one of a primary three-way valve and the secondary three way valve if the rate of pressure reduction is equal to or higher than a pre-determined rate.

Abstract: A pedal simulator connected to a master cylinder to provide brake pedal response to a driver. The pedal simulator includes first and second reaction force members with an adjustable gap to change brake pedal feeling. A component of the pedal simulator includes a deformable portion that is used to adjust the gap to achieve a desired brake pedal response.

Abstract: A brake system includes first and second wheel brakes, a reservoir, and a brake pedal unit having a housing and a pair of output pistons slidably disposed in the housing. The output pistons generate brake actuating pressure during a manual push-through mode for actuating the first and second wheel brakes. The system further includes a plunger assembly having a housing having a motor driving an actuator, and a piston connected to the actuator. The piston pressurizes a chamber when the piston is moving in a first direction to provide fluid flow out of a first port and through a pair of parallel valves. The piston pressurizes a second chamber when the piston is moving in a second direction opposite the first direction to provide fluid flow out of a second port. The first and second ports are selectively in fluid communication with the wheel brakes.

Abstract: A coiled filter for use in a hydraulic braking system of a vehicle comprises a coiled mesh-like structure which is configured to be installed around a first surface of a cylindrical hydraulic component. The coiled filter is configured to have an internal spring force as a retention force which couples the filter to the first surface of the cylindrical hydraulic component. The filter may be pre-coiled prior to installation by plastically deforming to a diameter that is smaller than the diameter of the cylindrical hydraulic component on which the filter is installed.