Abstract: A brake system for actuating a pair of front wheel brakes and a pair of second wheel brakes. The brake system includes a reservoir and a brake pedal unit having a housing with first and second pistons slidably disposed in the housing. The first and second pistons are operable during a manual push-through mode by actuation of a brake pedal connected to the brake pedal unit. The first and second pistons are movable to generate brake actuating pressure at first and second outputs for actuating the pair of front wheel brakes and the pair of rear wheel brakes. A first source of pressurized fluid actuates the pair of front wheel brakes and the pair of rear wheel brakes during a non-failure normal braking event. A first electronic control unit controls the first source of pressurized fluid. A second source of pressurized fluid is hydraulically connected to the brake pedal unit and actuates the brake pedal unit to cause movement of the first and second pistons for generating pressure at the first and second outputs.

Abstract: A method of calibrating a solenoid actuated valve includes: providing a brake system including a fluid pressure source: providing a valve having a solenoid, and wherein the valve is in fluid communication with the fluid pressure source; operating the fluid pressure source to provide a constant flow of fluid to the valve; energizing the solenoid of the valve with a constant current such that fluid flows through the valve; measuring the pressure of the fluid flowing at the valve; adjusting the current sent to the solenoid until a predetermined pressure has been obtained; storing a nominal current value of the current required to obtain the predetermined pressure; and calibrating the valve by adding a correction offset factor to the nominal current value for future actuation of the solenoid of the valve.

Abstract: A pump attenuator bypass valve (40/100/200) is located at an outlet of a pump (30) in a vehicle braking system (10) between the pump (30) and an attenuator (34). The attenuator bypass valve (40/100/200) includes a bypass valve housing (41), a first fluid flow path (74, 57/179/220, 208), and a second fluid flow path (80/183). The first fluid flow path (74, 57/179/220, 208) is defined in the housing (41) and is configured to allow continuous flow of fluid when the pump (30) operates at a first pump flow rate. The second fluid flow path (80/183) is defined in the housing (41) and is configured to bypass the first fluid flow path (74, 57/179/220, 208) and to allow continuous flow of fluid when the pump (30) operates at a second pump flow rate higher than the first pump flow rate.

Abstract: A brake system includes a fluid reservoir, a brake pedal unit, a first source of pressurized fluid, a pump assembly, and a valve for selectively closing off communication between an inlet of the pump assembly and the brake pedal unit. The brake pedal unit includes a housing and a pair of pistons slidably disposed in the housing. The pair of pistons are movable to generate brake actuating pressure at first and second outputs for actuating at least one wheel brake within a first circuit and a second circuit, respectively. The first source of pressurized fluid actuates the at least one wheel brake under normal braking conditions. The pump assembly actuates the at least one wheel brake under a manual push-through mode.

Abstract: A brake piston for use in a disc brake assembly having an external surface disposed along a longitudinal axis; and a non-circular end face being disposed perpendicular to the external surface and the longitudinal axis. The non-circular end-face and the external surface define a cavity and the non-circular end face is configured to engage with a brake disc when the disc brake assembly is actuated.

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 method of detecting brake fade for a vehicle brake system having wheel brakes susceptible to brake fade, includes the steps of: (a) providing a brake system including wheel brakes; and (b) determining the presence of brake fade within the vehicle system utilizing adaptive references maps, and wherein the adaptive reference maps include storing vehicle deceleration data and brake system fluid volume at different pressure points in a histogram.

Abstract: A brake system for a vehicle comprises a driver operable brake pedal coupled to control a brake pressure generating unit to supply hydraulic brake pressure to front and rear hydraulically actuated wheel brakes, and wherein the rear wheel brakes are also configured to be electrically actuated; a sensor arrangement for monitoring the driver's braking intent; the brake system operable in a first mode wherein the front and rear brakes are both hydraulically actuated, and a second mode wherein the front brakes are hydraulically actuated and the rear brakes are electrically actuated, the rear brakes include a caliper assembly including brake pads operable to engage a brake rotor to brake the vehicle, the caliper assembly including a hydraulic actuating mechanism and an electric actuating mechanism, a control connected to the sensor arrangement for operating the electric actuating mechanism to actuate the rear brakes as a function of the driver's braking demand.

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: 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.