It is a device that adjusts the driving direction according to the intention of the
driver and transmits the steering torque received from the steering wheel to the gearbox.
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Steering Column
Steering column is a part assembled with the steering wheel on the chassis.
It transmits rotating torque to the intermediate shaft in accordance with
the direction change.
It is divided into 2 different types of steering column, ‘Automatic’ & ‘Manual’
according to the lever operation method.
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Intermediate Shaft
Intermediate shaft is a part which transmits the
rotating torque to the gear box.
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Worm Shaft
Worm Shaft is a part which forms the EPS system.
It transmits the rotating torque of the motor to the worm gear at a proper gear ratio.
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Worm Wheel
Worm wheel is a part which forms the EPS system.
It rotates the steering column shaft by the rotating torque delivered through the motor and worm shaft.
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Sensor Shaft Assembly
Sensor shaft connects the upper column axle with the lower intermediate shaft.
It twists input shaft and output shaft at a certain angle according to the rotating torque.
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Main Housing
Main housing is a part assembled with the power head parts
(decelerating gear, motor, sensor etc).
It is made of aluminum alloy and it is connected with the steering column axle.
It fixes the position so that each part can function properly.
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Rack Bar
Rack bar converts rotating power generated by the steering wheel rotations to the rectilinear/reciprocating motion, which makes the wheel to rotate through the tie rod.
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Pinion Shaft
Pinion shaft transmits the rotating torque of the intermediate shaft to rack bar by connecting the rack bar and the gear.
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Inputshaft Pinion
Assembly(IPA)
IPA twists the input pinion and output shaft at a certain angle according to the steering rotating torque. It is divided into 2 different types of IPA ‘Pinion-EPS IPA’ & ‘Rack bar-EPS IPA ‘ according to the EPS motor position.
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Steering Gear Assembly
Steering Gear Assembly is a device that converts the rotational motion of the steering column into a linear motion via rack and pinion gear in order to steer the front wheels.
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Sensor & Worm Wheel Assembly
This is one of the component parts of the EPS(MDPS), assembled between a Steering column and an Intermediate shaft, calculates appropriate torques applied on a steering axis with a TAS(Torque Angle Sensor) and a worm wheel, located mid-range, and transmits the torques to the EPS(MDPS).
