School

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School

• Teacher

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How Car Steering Works
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How Car Steering Works

• Turning the Car
• You might be surprised to learn that when you
  turn your car, your front wheels are not pointing
  in the same direction.

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How Car Steering Works
For a car to turn smoothly, each wheel must
follow a different circle. Since the inside wheel
is following a circle with a smaller radius, it
is actually making a tighter turn than the
outside wheel.

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How Car Steering Works
Rack-and-pinion Steering
A rack-and-pinion gearset is enclosed in a metal
tube, with each end of the rack protruding from
the tube. A rod, called a tie rod, connects to
each end of the rack.
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Power Rack-and-pinion
When the rack-and-pinion is in a power-steering
system, the rack has a slightly different design.
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Rack-and-pinion Steering
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Recirculating-ball Steering

• Recirculating-ball steering is used on many
  trucks and SUVs today. The linkage that turns the
  wheels is slightly different than on a
  rack-and-pinion system

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Re-circulating-ball steering

• The recirculating-ball steering gear contains a
  worm gear.

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Power Steering
There are a couple of key components in power
steering in addition to the rack-and-pinion or
recirculating-ball mechanism.
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Power Steering
The hydraulic power for the steering is provided
by a rotary-vane pump (see diagram below). This
pump is driven by the car's engine via a belt and
pulley. It contains a set of retractable vanes
that spin inside an oval chamber.