| 摘要 |
A power steering system is provided for assisting with steering the wheels of a motor vehicle and includes two or more electrical motors that are selectively energized by an electronic control unit. The motors may be drivingly connected to the steering wheel shaft, or drivingly connected to the steering wheel pinion that meshes with the steering rack, or be drivingly connected to the steering rack. The motors may be drivingly connected through various transmission arrangements in inlcuding gears, ball nuts, belt and pulleys, or chain and sprockets, speed reduction gears and clutches. The electronic control unit can selectively control the motors to run all at once, or to run individually, as desired.
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