Abstract: An axial load bearing assembly that may be for a steering gear box apparatus includes a first member, a second member, a jacket, and an elastomeric ring. The first member includes a first surface facing axially with respect to a centerline. The second member is constructed and arranged to move axially with respect to the first member between an extended state and a compressed state. The second member includes a second surface that axially opposes the first surface. The jacket is engaged to one of the first and second members, and includes a face facing radially inward. The elastomeric ring is disposed axially between the first and second members for axial compression, and is in biased contact with the face at least when in the compressed state preventing radial expansion of the elastomeric ring during axial compression.

Abstract: An axial load bearing assembly that may be for a steering gear box apparatus includes a first member, a second member, a jacket, and an elastomeric ring. The first member includes a first surface facing axially with respect to a centerline. The second member is constructed and arranged to move axially with respect to the first member between an extended state and a compressed state. The second member includes a second surface that axially opposes the first surface. The jacket is engaged to one of the first and second members, and includes a face facing radially inward. The elastomeric ring is disposed axially between the first and second members for axial compression, and is in biased contact with the face at least when in the compressed state preventing radial expansion of the elastomeric ring during axial compression.

Abstract: A method of controlling a power steering system is provided. The method generates a base torque command based on a hand wheel torque signal without altering the hand wheel torque signal at a range of relatively low frequencies. The method generates a motor inertia compensation command based on a motor inertia of a motor of the power steering system. The method generates an assist torque command based on the base torque command and the motor inertia compensation command. The method operates a motor of the power steering system to generate a torque based on the assist torque command.

Abstract: A method of controlling a power steering system is provided. The method generates a base torque command based on a hand wheel torque signal without altering the hand wheel torque signal at a range of relatively low frequencies. The method generates a motor inertia compensation command based on a motor inertia of a motor of the power steering system. The method generates an assist torque command based on the base torque command and the motor inertia compensation command. The method operates a motor of the power steering system to generate a torque based on the assist torque command.

Abstract: A method for reducing steering instability in a hydraulic power steering system for a vehicle having a pair of cylinder lines through which hydraulic fluid is conveyed in assisting turning a vehicle wheel, including the steps of determining which of said pair of cylinder lines results in less steering instability when the vehicle wheel is turned; calculating the fluid inertance of the hydraulic fluid conveyed through the cylinder line that results in less steering instability; and altering at least one dimension of the cylinder line that results in greater steering instability when the vehicle wheel is turned to substantially match the fluid inertance thereof to the calculated fluid inertance.