The ‘power steering' of modern day cars is based on
Answers
Hydraguide
Hydraulic or electric actuators add controlled energy to the steering mechanism, so the driver can provide less effort to turn the steered wheels when driving at typical speeds, and reduce considerably the physical effort necessary to turn the wheels when a vehicle is stopped or moving slowly. Power steering can also be engineered to provide some artificial feedback of forces acting on the steered wheels.
Hydraulic power steering systems for cars augment steering effort via an actuator, a hydraulic cylinder that is part of a servo system. These systems have a direct mechanical connection between the steering wheel and the linkage that steers the wheels. This means that power-steering system failure (to augment effort) still permits the vehicle to be steered using manual effort alone.
The power steering system in your vehicle enables you to steer your vehicle in the direction you would like it to proceed. Power steering is really “power assisted”
steering. “Power assisted” steering will allow you to steer your vehicle manually when the engine is not running or if you have a failure in the power steering system which disables it.
Power steering utilizes a hydraulic pump running off a belt driven by the engine, this pump enables a small amount of fluid to be under pressure. This pressure in turn assists the steering mechanism in directing the tires as you turn the steering wheel. The power steering system typically includes a pump, power steering fluid, a pressure hose assembly, a control valve and a return line.
There are two basic types of power steering systems used on vehicles. The rack and pinion steering system and the conventional/integral steering gear system, which is also known as a recirculating ball steering system. The rack and pinion steering system is the most commonly used power steering system on todays’ vehicles. The steering shaft turns a gear that moves the rack side to side, utilizing a power unit built directly onto the rack assembly. The steering gear system is generally used most often on trucks, it has a series of steel balls that act as rolling threads between the steering shaft and the rack piston. The steering wheel shaft connects to a gear assembly and a series of links and/or arms that turn the wheels to the left or right.
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