Abstract: A brake system includes a tandem power transmission unit selectively driven by a first electric motor to provide pressurized hydraulic fluid to primary and secondary output lines. A plurality of iso/dump control valve arrangements is provided, with each being associated with a selected wheel brake and selectively provides slip control to the selected wheel brake. A first traction control iso valve is hydraulically interposed between the tandem power transmission unit and at least a selected iso/dump control valve arrangement via the primary output line. A second traction control iso valve is hydraulically interposed between the tandem power transmission unit and at least an other iso/dump control valve arrangement via the secondary output line. A DAP power transmission unit is driven by a second electric motor for selectively providing pressurized hydraulic fluid to the iso/dump control valve arrangement of at least one associated wheel brake.

Abstract: A brake system includes a tandem power transmission unit selectively driven by a first electric motor to provide pressurized hydraulic fluid to primary and secondary output lines. A plurality of iso/dump control valve arrangements is provided, with each being associated with a selected wheel brake and selectively provides slip control to the selected wheel brake. A first traction control iso valve is hydraulically interposed between the tandem power transmission unit and at least a selected iso/dump control valve arrangement via the primary output line. A second traction control iso valve is hydraulically interposed between the tandem power transmission unit and at least an other iso/dump control valve arrangement via the secondary output line. A DAP power transmission unit is driven by a second electric motor for selectively providing pressurized hydraulic fluid to the iso/dump control valve arrangement of at least one associated wheel brake.

Abstract: A brake system includes a reservoir and a motor-driven master cylinder operable during a backup braking mode by actuation of an electric motor of the master cylinder to generate brake actuating pressure at first and second MC outputs. A power transmission unit provides pressurized hydraulic fluid to a PTU output for actuating first and second pairs of wheel brakes in a normal non-failure braking mode. The power transmission unit includes a side-mounted electric PTU motor configured to selectively pressurize the hydraulic fluid by transmitting rotary motion to a ball nut assembly of the power transmission unit via a force translator mechanically interposed between the electric PTU motor and the ball nut assembly. First and second two-position three-way valves each selectively control hydraulic fluid flow from a chosen one of the master cylinder and the power transmission unit to a corresponding pair of wheel brakes.

Abstract: A braking system for a vehicle is operative to apply a friction brake force to at least one wheel of the vehicle. The braking system includes a master cylinder is in fluid communication with a reservoir of brake fluid and in fluid communication with the hydraulic brake device. According to one aspect, the braking system includes an electric brake force generator which moves the brake fluid within the master cylinder to deliver brake fluid to the friction brake device in response to a first predetermined displacement of a brake pedal. The electric brake force generator includes a housing defining a boost chamber filled with brake fluid and in fluid communication with the reservoir of brake fluid and further includes a drive arrangement for creating pressure in the boost chamber.

Abstract: A system to control a contact force and a positional relationship between members in operable communication is provided. The system comprises a first member, a second member in operable communication with the first member, a contact force and a positional relationship existing between the first member and the second member. The system further comprises first biasing members being configured to bias and position the first member, the contact force and positional relationship being influenced by a response of the first biasing members to the contact forces between the members in operable communication.

Abstract: Disclosed herein is a system to control a contact force and a positional relationship between members in operable communication. The system comprising, a first member, a second member in operable communication with the first member, and a contact force and a positional relationship exists between the first member and the second member. The system further comprising first biasing members being configured to bias and position the first member, and the contact force and positional relationship are influenced by a response of the first biasing members to the contact forces between the members in operable communication.

Abstract: A steering system for a vehicle includes a load displacement system allowing transient loads of the steering mechanism to be displaced. The steering system also includes a first coupling mechanism coupling an electric motor to a rack housing, and a second coupling mechanism coupling a ball nut to a rack and method.

Abstract: A steering system with reduced coupling between a position overlay unit and a torque overlay unit may include a remote valve assembly for controlling a hydraulic assist force or an electric motor for providing torque overlay and electric assist to a rack of a rack and pinion steering system. In one embodiment, the position overlay unit may provide the assist force and the torque overlay unit may provide a motor command signal to the motor of a differential positioned on a steering shaft. In another embodiment, the position overlay unit may provide the motor command signal and the torque overlay unit may provide the assist force. In either embodiment, the position overlay unit may include variable ratio gain that uses a position signal to output a variable ratio command.

Abstract: An electric power steering system, comprising: a steering wheel in operable communication with a mechanical linkage; a steering shaft in operable communication with the mechanical linkage, and in operable communication with at least one road wheel; a first transmission in operable communication with the steering shaft; a unidirectional electric motor in operable communication with the first transmission; wherein the electric power steering system is configured such that when the steering wheel is turned in a first direction, the motor's power is transmitted in the first direction to the steering shaft, and when the steering wheel is turned in a second direction, the motor's power is transmitted in the second direction to the steering shaft.

Abstract: A steering system for a vehicle may include a load displacement system allowing transient loads of the steering mechanism to be displaced. The steering system may also include a first coupling mechanism coupling an electric motor to a rack housing, and a second coupling mechanism coupling a ball nut to a rack. A method for providing an actuation force to a rack of a vehicle includes isolating non-axial loads from an electric motor of a steering system and isolating non-axial loads from a linearly actuatable member of a rotary-to-linear conversion device in the steering system. An actuator for a steering system may include a rotary to linear actuator, a movable linear section, and an interface between the rotary to linear actuator and the linear section.