Download - Commonly Used Power Steering Technolgies
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Commonly Used Power Steering Technologies
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Power steering system in the vehicle enables the driver to steer the
wheels with some source of power other than the drivers manual force .
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Power steering means power assisted steering.
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Traditional power
steering systems are:
Hydraulic powering
systems (HPS)
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The latest technological cross
we bear is:
Electric powering
systems (EPS)
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Hydraulic Power Steering :
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Components:
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Hydraulic
control
valve
Pinion gear
Hydraulic
pressure
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Rack housing
Hydraulic piston
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HPS are designed to assist the operation of the rack bar by generating oil pressure in the pump
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The internal cavity is divided into
two chambers by a sealed piston attached to the rack
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Applying pressurized hydraulic fluid to one side of the piston while allowing fluid to return from the other side to a reservoir provides steering assistance.
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A valve attached to the pinion gear controls the hydraulic fluid flow and helps to turns the wheels in the required direction
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Electric Power Steering :
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Components:
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Pinion
shaft
Steering
torque
sensor
Rack and
pinion
housing
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EPS works with the help of an electric motor and a control unit having some sensors .
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The electric motor mounted to the side of the rack rotates a steering gear with an applied force that reduces the torque required from the driver.
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The torque sensor attached to the pinion shaft signals a control computer when to provide assistance
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EPS eliminates many HPS
components such as:
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Pump
Hoses Fluid
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Drive belt Pulley
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Basic differences :
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HPS is more
complicated than EPS
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HPS uses hydraulic
fluids for operation &
extracts power from
engine
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No such fluids are
required for EPS as it
consumes power
from battery
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Maintenance charges
are too low in case of
EPS
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EPS gives better
response at different
speeds
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EPS are more durable
and less faulty
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EPS gives more
mileage than HPS as
it consumes less
power
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Thank You
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