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

  2. SPECIFICATION

    Item Specification
    Tire Size 175/70 R14 175/65 R14 175/65 R15 185/60 R16 195/50 R16 205/45 R17
    Power Steering Type Electric Power Steering Electric Power Steering Electric Power Steering Electric Power Steering Electric Power Steering Electric Power Steering
    Steering Gear Type Rack and Pinion Rack and Pinion Rack and Pinion Rack and Pinion Rack and Pinion Rack and Pinion
    Steering Gear Ratio (Overall) 12.8

    14.1*1

    14.3*2

    		 12.8

    14.1*1

    14.2*3

    14.3*4

    14.4*5

    13.2*5

    13.3*6

    		 13.2
    No. of Turns Lock to Lock 2.65 2.98 2.65 2.98 2.28 2.28
    Rack Stroke 149 mm (5.86 in.) 149 mm (5.86 in.) 149 mm (5.86 in.) 149 mm (5.86 in.) 127.8 mm (5.03 in.) 127.8 mm (5.03 in.)

    *1: Models with raised vehicle height and with 1KR-FE engine

    *2: Models without raised vehicle height and with 1KR-FE engine

    *3: Models with raised vehicle height and with 1ND-TV engine

    *4: Models without raised vehicle height and with 1KR-FE and 1ND-TV engines

    *5: Models with 2NR-FKE engine

    *6: Models with 1KR-FE engine

  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 in a straight driving situation, 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 the conventional hydraulic power steering system, this system excels in serviceability because it does not require pipes, vane pump, pulley and power steering fluid.