Motor vehicles – Surface effect vehicles – Dynamic seal or fluid curtain
Patent
1992-03-27
1993-12-07
Focarino, Margaret A.
Motor vehicles
Surface effect vehicles
Dynamic seal or fluid curtain
180142, 180152, B62D 506
Patent
active
052676277
ABSTRACT:
A stability augmentation system and hydrostatic power steering system including an electric motor is provided for a automotive vehicle. The hydrostatic power steering system utilizes a power steering piston responsive to movement of the rack element of the rack and pinion steering connection. A torque sensor is connected to the steering shaft for providing an output torque signal to a power steering controller. The electric motor of the system is responsive to a command signal generated by the power steering controller. An electrically operated valve is connected to the hydraulic lines and is adapted to receive a signal from the power steering controller for controlling flow of hydraulic fluid to the power steering chamber. The electrically operated valve arrangement is rendered inoperative within a predetermined zone defined by the command signal and the output torque signal. The stability augmentation system includes a hydraulic system having a separate oil pump and electric motor. The motor is controlled by a stability augmentation system controller through inputs from a steering wheel angle sensor, vehicle speed sensor, yaw rate sensor and a position sensor.
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Frank Andrew A.
Yasui Yoshiyuki
Focarino Margaret A.
Imra America Inc.
Johnson Victor E.
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