How the Power Steering System of a Car works?

Published: 23rd June 2010
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Every part of car helps in the proper movement of car. Whether it is wind screen, wheels, gear box or power steering, they make a car complete by supporting each and every function. You enjoy when you car takes sharp turn on road. Do you know the hidden force responsible for that sharp movement of your car? The power steering system of a car is responsible for easy movement of your car. Most of the power steering systems work by using a hydraulic system. The hydraulic pressure is generally provided by a rotary vane pump controlled by the vehicle's engine. A double-acting power steering cylinder generates a force to the steering gear, which in turn applies a torque to the steering axis of the roadwheels.



Power steering system is not a drive-by-wire system but it's a power assisted steering. A power steering system has two vital components - power steering cylinder and the steering gear. In most of the cases the cylinder is attached to the front of the engine and driven by the accessory drive chain. In order to produce required fluid pressure at idle, the size of the power steering cylinder should be enough. The speed of the engine increases as the pump spins faster and a pressure relief valve is used to keep the pressure at the preferred levels.



Usually there are two types of steering gears - rack and pinion, and recirculating ball type. Rack and Pinion is widely used in modern cars. Hydraulic fluid that originated from the cylinder enters the steering gear and returns back at low pressure side in the power assisted system. The gear box comprises of a valve system that controls fluid out which reenters later. The pressurized fluid works on the power piston to steer the vehicle.



As a good driver, you always need to know the various parts of your car which can help you understand your vehicle better.



Lodematic is one of the leading hydraulic cylinder manufacturers that offer customized designs of Power Steering Cylinder, Cylinders in UK.

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