Electric Power Steering (EPS) System is an Alternative to Conventional Steering Systems

 

Electric Power Steering (EPS) System

An electric power steering (EPS) system has emerged as an alternative to conventional steering systems; hydraulic and electro-hydraulic systems. It is a key technology for highly automated driving. Electric power steering offers good steering control, adjustable power, and better fuel efficiency. Thus, the use of electric power steering (EPS) system is increasing in the automotive industry, especially in commercial vehicles, as an EPS system used in passenger vehicles is not capable of providing enough power and torque for a commercial vehicle.

An  Electric Power Steering (EPS) System is a combination of various linkages intended to make the vehicle turn within the minimum radius without overturning. The system provides enhanced steering capability with less effort required by the driver. The system does not have drive belt, hose, pulley, pump, and fluid, which in turn make the driving experience smooth and relaxing. Furthermore, EPS provides precision turning and improves fuel efficiency. EPS uses an electric motor that draws energy from vehicle's electrical system to provide steering assistance.

Electrical charge is used to rotate electric motor and through energy transfer, a lateral force is produced that aids the movement along the steering rack. The benefit of electric over hydraulic power steering is the efficiency, resulting in lower fuel consumption. Electric power steering (EPS) system reduces the amount of weight in the vehicle. Furthermore, the system doesn't use power from the engine as the hydraulic systems do. Overall, the electric power steering system is more efficient compared to hydraulic system.

Thus, with the increase in vehicle production and increase in demand for fuel-efficient vehicles, the use of electric power steering system is also increasing with a rapid pace. For example, in 2021, the auto industry in the U.S. produced more than 9.17 million motor vehicles, including passenger cars, light commercial vehicles, heavy trucks, as well as buses and coaches.

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