Delphi Technologies, Inc.

Steering Solutions IP Holding Corporation

Autoliv Asp, Incorporated

Gm Global Technolgoy Operations, Inc.

Veoneer Us, Inc.

Zf Active Safety US Inc.

Veoneer Nissin Brake Systems Japan Co., Ltd.

Suat Ali Ozsoylu

Michael Richard Pyrett

Karen Ann Boswell

William F Feriend

Michael Patrick Anspaugh

Farhad Bolourchi

Troy P Strieter

Jon Dee Demerly

Michael J Augustine

Matthew Harvey Jimkoski

Blaise J Ganzel

Tomy Sebastian

Robert W Dubay

Brian Jerome Magnus

Sanket S Amberkar

James Myrl Card

Todd Jammer

Eugene T Tanke, Ii

Adrian Grigoras

Michael Yang

Curt M Roberts

Ron Posa

Karen Boswell

Matthew H Jimkoski

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.

Fault-tolerant brake system

A brake boost assist system for use with a master cylinder of a motor vehicle braking system, includes an inductive sensing system. The inductive sensing system has sensing devices carried on an input member and an output member, where the input and output members are coupled to respective ones of an input rod and an output rod of the brake boost assist system. Movement of the input and output members relative to one another, and relative to a fixed element of the inductive sensing system positioned within the brake boost assist system, enables an accurate estimation of the distance of a pedal gap which separates faces of the input and output rods. The accurate estimation of the pedal gap distance enables a more accurate determination to be made of the braking force required for any given pedal stroke input by an operator of the vehicle during a braking action.

System and method for sensing pedal rod to piston rod gap in a brake boost assist system of a master cylinder

A boost arrangement for pressurizing a master cylinder of a vehicle braking system of a vehicle includes a housing, a primary piston and a secondary piston. The housing defines a boost chamber filled with brake fluid. The primary piston is disposed in the boost chamber and defines an opening extending therethrough. The secondary piston has an end extending into the opening defined by the primary piston.

Vehicle braking system with booster arrangement

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. In accordance with another aspect, the braking system includes a mechanical brake force generator is disposed between a brake pedal and a primary piston of the master cylinder which is operative to actuate the master cylinder in response to a predetermined displacement of the brake pedal.

Vehicle braking system with electric brake booster

A steering column assembly includes a mounting bracket and a column jacket moveable relative to the mounting bracket. The mounting bracket defines a rake slot having rake slot teeth and a telescope slot having telescope slot teeth. A shaft extends through the rake slot and the telescope slot transverse to a longitudinal axis of the column jacket. A rake lock having rake lock teeth is disposed within the rake slot and a telescope lock having telescope lock teeth is disposed within the telescope slot. The shaft extends through and rotatably supports the rake lock and the telescope lock. The rake lock and the telescope lock rotate as the rake lock and the telescope lock move into interlocking toothed engagement with the slot teeth to avoid peak-to-peak contact between the lock teeth and the slot teeth, thereby permitting full meshing engagement between the lock teeth and the slot teeth.

Locking mechanism for an adjustable steering column having impact teeth

A steering column assembly includes a mounting bracket and a column jacket moveable relative to the mounting bracket to adjust a position of the column jacket. A rake plate is pivotably coupled to the mounting bracket and defines a rake slot having rake slot teeth. A telescope plate is pivotably coupled to the column jacket and defines a telescope slot having telescope slot teeth. A rake lock having rake lock teeth is disposed within the rake slot and a telescope lock having telescope lock teeth is disposed within the telescope slot. The rake plate and the telescope plate pivot as the rake lock and the telescope lock move into interlocking toothed engagement to avoid peak-to-peak contact between the lock teeth and the slot teeth, thereby permitting full meshing engagement between the lock teeth and the slot teeth.

Pivoting locking device for an adjustable steering column

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.

System and method for controlling contact between members in operable communication

A steering column assembly and method of preventing rotation of a tilt mechanism relative to a steering column during application of a predetermined force is disclosed. The tilt mechanism is coupled to the steering column and includes a tilt head pivotable about a tilt axis with a lever and a moveable shoe pivotally mounted to the tilt head respectively. The moveable shoe pivots between an engaged position for preventing rotation of the tilt head and a disengaged position for allowing rotation of the tilt head. A stopping member is coupled to at least one of the lever and the tilt head for deforming at least one of the tilt and the lever to maintain the moveable shoe in the engaged position and to prevent the tilt head from pivoting about the tilt axis upon a predetermined force applied to the steering column.

Steering column assembly having a stopping member for preventing rotation of a tilt mechanism

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.

Apparatus and method for steering a vehicle

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.

Force and position control for active front steering

The invention provides for a power steering assembly and method of actuation for assisting a driver in moving the steerable wheels of a vehicle. The power steering assembly includes a housing that defines a chamber. A steering rod is disposed in the chamber and is longitudinally moveable within the chamber. A shoulder is fixed to the steering rod and has opposing sides. A shaft is supported by the housing and engages the steering rod translating the rotational movement of the shaft into a longitudinal movement of the steering rod. A first actuator and second actuator are disposed in the chamber on opposing sides of the shoulder. The first and second actuators each have an excitable material that is controlled in a series of actuations to advance the actuators in a linear movement for pushing against the shoulder to move the steering rod longitudinally within the chamber.

Power steering assembly

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. The interface may include one or more cylindrical joints, revolute joints, compliant members, or a block on a plane wherein the total degrees of freedom for the system including the rotary to linear actuator, rack, and interface may be one, while the interface may be limited to three degrees of freedom.

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. A method for providing power assist for an electric power steering system, the method comprising: rotating a first body in a first direction with a unidirectional motor; rotating a second body in a second direction with the unidirectional motor; providing a power assist from the first body when a steering wheel is turned in a first direction; and providing a power assist from the second body when a steering wheel is turned in a second direction.

Method and system for electric power steering

A steering system for a vehicle, the steering system includes a rack-independent actuator. The rack-independent actuator has component parts isolated from undesirable loads by two universal joints that isolate mechanical components of the actuator from transient loads that may be encountered by the rack or rack housing.

A steering system for a vehicle, the steering system includes a rack-independent actuator. The rack-independent actuator has component parts isolates from undesirable loads by two universal joints that isolate mechanical components of the actuator from transient loads that may be encountered by the rack or rack housing.

Growing community of inventors

Rochester Hills, MI, United States of America

Suat Ali Ozsoylu