Different types of power steering

All power steering systems perform the same function, but they are executed in different ways. The three different systems – hydraulic, electro-hydraulic and electric – use different mechanics to provide the result:

Hydraulic Power Steering

As with all hydraulic systems this type of power steering uses pressurised fluid to decrease the effort needed to steer. The power steering fluid, which is stored in a reservoir, is supplied by the power steering pump to be pressurised. This fluid is directed by a turning belt on the pump via the high-pressure hose to the input side of the power steering gear control-valve. The high pressure created assists the driver when turning the front wheels. To maintain constant pressure, the power steering pump uses a bypass valve which maintains the pressure, no mater the engine speed.

Power Team SA, with years within the hydraulic industry, understands the workings of hydraulic systems and the need of having quality components within the system, especially when used within vehicles. Hydraulic systems within vehicles, especially those within the mining sector need hydraulics to move these vehicles as well as use hydraulics to help those that carry and move large loads. Power Team SA is a company that sources the world’s leading hydraulic maintenance tools and products to increase productivity and performance in different sectors.

Electro-hydraulic power steering

A brushless electric motor is used to drive the hydraulic powering steering pump instead of the belt as in a hydraulic system. Other than this change, the electro-hydraulic power steering system works in the same way as a hydraulic power steering one.

Electric power steering

In this system there is no need to pressurise fluid, and as in an electro-hydraulic system a brushless bi-directional permanent magnet connected to the steering gear or column turns the front wheels. Sensors are used to detect which way the steering wheel is turned to assist the movement of the steering gear in the correct direction.