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How does electric power steering work?

Updated: 10/21/2022
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15y ago

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Electric Power Steering replaces the hydraulic system that has been used for decades. A rack and pinion system is still in place but instead of fluid under pressure by means of the power steering pump. The electric system uses a computer controlled motor to assist in steering. On some cars this motor can be located in the steering rack itself or it may be mounted outside. Some of these system have a computer to monitor road speed, and adjust the motor speed to provide different feedback depending on speed. This allows for better low speed assist and better road feel on the highway. Another advantage is that because their is no power steering pump to draw horsepower away from the engine. It would have a slight effect on engine load. These systems are becoming mainstream and will probably be in most vehicles in the next few years.

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Q: How does electric power steering work?
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