| 摘要 |
A steering system control apparatus having a centering unit for resisting off-center movement of the steer wheels of a vehicle and returning them to a selected center position after each such movement. A centering shaft is connected to the steering shaft of a vehicle steering gear for rotational reciprocation therewith and an intermediate rotational position thereof defines a neutral position that is adjustable by a trimming assembly to change a selected center position of the steering system. A holding force and a return force are applied to the centering shaft by actuating members that engage a cylinder arranged for reciprocal movement against a constantly applied resilient force.
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