POWER STEERING SYSTEM


  1. OUTLINE


    1. A vehicle speed sensing type Electric Power Steering (EPS) system is used.

    2. This system generates assist torque using a power steering motor and a reduction mechanism that are mounted on the steering column assembly to assist the driver's steering.

    3. Electrical load control is used. This prevents the assist torque from decreasing when the battery voltage decreases.

    4. A rack and pinion type steering gear assembly is used.

    5. The lower bearing specifications of column shaft is set to a 4-point support structure, the support stiffness of the column shaft is increased to improve the steering feel. (2017/10 - )

  2. SPECIFICATION

    Power Steering Type Electric Power Steering (EPS)
    Steering Gear Type Rack and Pinion
    Rack Stroke mm (in.) 149 (5.9)
    No. of Turns Lock to Lock 2.48
    Steering Gear Ratio (Overall) 13.1

  3. MAIN FEATURES


    1. The EPS system has the following features:


      1. The EPS system activates the power steering motor only when the driver turns the steering wheel. This reduces the energy consumption when the vehicle is going straight, resulting in excellent fuel economy.

      2. The torque sensor, power steering motor and reduction mechanism are integrated into the steering column assembly, giving a simple and compact structure.

      3. Unlike a conventional hydraulic power steering system, this system excels in serviceability because it does not require pipes, vane pump, pulley, or power steering fluid.