Hydraulic feedback control

Details Hydraulic feedback control Hydraulic feedback control

1996-05-16

1998-09-29

Basinger, Sherman

Motor vehicles

Steering gear

With fluid power assist

B62D 506

Patent

active

058134921

ABSTRACT:
A hydraulic feedback control for hydraulic power steering systems having first and second shaft sections rotatable relative to one another within limits, and whose relative rotation controls a servo valve system. At least one compressor working chamber is provided in the form of a piston working chamber. A piston is arranged in the piston working chamber, and is displaceable therein and separate from the first shaft section. The piston is tensioned by a pressure in a piston working chamber against a spring engaged with the first shaft section. A maximum possible displacement travel of the piston relative to the second shaft section is limited by a stop mounted thereon. The feedback control is designed so that with limited frictional losses, controllable torques can be produced which counteract the relative rotation between the shaft sections.

REFERENCES:
patent: 3882954 (1975-05-01), Inoue
patent: 3927602 (1975-12-01), Strauff
patent: 3978770 (1976-09-01), Strauff
patent: 5307895 (1994-05-01), Duffy

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