Electric Power Steering System
8-2
the EPS system at regular intervals. Correct
operation and driving skills will ensure the
security and reliability of UTV.
To make sure your EPS system will be
useful for a long time please follow the
methods for maintenance in this chapter.
This
chapter
also
includes
detailed
disassembly and maintenance information.
Prior to any maintenance or repairs, the
person performing such repairs must have
qualified
mechanical
skills,
electronic
maintenance skills and the special tools
mentioned in this manual.
INTRODUCTION OF EPS SYSTEM
■
What is EPS system
The EPS system (Electric Power Steering System) is
a complete set of parts, including a special ECU only
for the EPS system (hereinafter referred to as the
ECU), many sensors and actuators, monitoring UTV
speed, the operating force of the steering wheel, as
well as temperature of the ECU and motor to provide
an accurate power torque of the motor and aligning
torque. All of these sensors, actuators, and motors
work together to provide easy steering, with less
effort by the operator.
■
Typical parts of the EPS system
In general, EPS system has the following parts:
Steering torque sensor
Motor to generate power torque
EPS system control unit (ECU
)
。
Speed sensor
。
Temperature sensor
Battery voltage sensor
Mechanical reduction transmission
mechanism(Reducer)
Gear/rack type steering gear
Steering rod joint
Ball stud of steering knuckle
Steering shaft and universal
■
Construction of EPS
1. Structure chart of EPS
①
Steering wheel
②
Reducer
③
Motor
④
Steering transmission shaft
⑤
Universal joint
⑥
Tie rod joint
⑦
Tie rod
⑧
Steering knuckle
⑨
Steering gear