Kia Sedona: Description and Operation
Third generation YP (2014-2024) / Kia Sedona YP Service Manual / Steering System / Electric Power Steering / Description and Operation
| Description |
MDPS Development
By comparing the electric power steering system with the conventional hydraulic pressure system (HPS)
| 1. |
Effect of reducing the number and weight of parts by deleting the pump, oil tank and hydraulic pressure type pipe |
| 2. |
Energy consumption adjusted to the performance requirements and comparatively small engine power consumption |
| 3. |
Deletion of oils |
| 4. |
Developed with advantages of shortened development time/improving the assembly working |
| 5. |
MDPS performs independent function regardless of the
difference in the engine operation from the conventional hydraulic power
steering by adopting the electric motor to assist the sub propulsion. |
| 6. |
MDPS generates the sub propulsive force variably depending on
the driving condition by controlling the motor operation based on the
input signals such as the torque sensor and steering angle sensor. |
MDPS has an integrated structure of the steering gear, ball
screw reduction gear part and MDPS unit. The components of MDPS should
not be disassembled. |
MDPS features and effect
| – |
The provision of proper propulsive power is available depending on the vehicle speed. |
| – |
It is equipped with the excellent stability at high speed driving. |
| – |
The fuel mileage can be improved by 3-5% as the energy is consumed only for steering. |
| – |
Energy can be saved by 85% compared to the hydraulic steering. |
| Operation |
R-MDPS operation mechanism
What is torque sensor?
The rack & pinion gear connected to the tire supporting
the actual weight of vehicle constrains the revolving of universal joint
when the driver turns the steering wheel. At this time, a kind of
spring, the torsion bar between the column output shaft and input shaft
is twisted.
In other words, this sensor detects the driver''s intention of steering by measuring the amount of torsion (Steering angle)
| • |
Type: Non contacting type electromagnetic induction style |
| • |
Operation voltage: 5V |
| • |
Output signal: Digital, 2 channel |
| • |
Size: Φ 56mm x 29mm(H) |
Components and Components Location
Components
1. Steering column shaft2. ECU3. Motor4. Steering gear box
...
Other Information:
Components and Components Location
Component
1. Steering column2. Lighting switch3. Wiper switch4. Screw5. SAS6. Clock spring
...
Catalytic Converter Repair procedures
Removal
[Catalytic Converter (WCC)]
1.
Remove the exhaust manifold.
(Refer to Engine Mechanical System - "Exhaust Manifold")
[Catalytic Converter (UCC)]
1.
Remove the Center Muffler. ...
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