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Steering - Cars

A steering system is a set of components and connections that allow the car to follow the desired course set by the driver. This includes steering parts such as a steering wheel, manual or hydraulic steering rack, hydraulic pump, power steering, oil compounds, steering knuckles, seals, king pins, liners and more. The main purpose of the steering wheel is to ensure that the wheels will be pointing in the desired direction.

This is usually done through a series of links, rods and gears. Steering links and steering wheels meet the Akermann steering geometry. Power steering was invented when cars started to become more advanced. In particular, the increase in the width and diameter of the tires came with major physical exertion on the part of the driver to steer the vehicle.

Many modern cars use rack and pinion power steering mechanisms, making circular motion into linear motion. This torque steering transmits movement of joints, allowing the wheels to turn in the left and right direction.

In older designs, it was common to used a type of worm gear, which still occurs in some cars, trucks and other vehicles. This type of device significantly reduces friction. Servo power steering helps the driver to steer and focus more easily by applying less force when turning the steering wheel to the front wheels.