Its been a long time I have been thinking to write this article about the two most commonly used power steering technologies, viz. Electric Power Steering and Hydraulic Power Steering. Before i tell you the difference, lets talk a few words on the basics.
What is power steering?
Power steering is a system which helps to steer the wheels with some source of power other than the drivers manual force with which he turns the steering. This feature adds to the comfort while driving as less effort is needed to turn the steering by the driver. Power Steering is specially important for the cars which have engine in front and there is a lot of weight on the front wheels.
For rear engine cars like Tata Nano or light weight cars like Maruti 800, its ok to have no power steering and still drive comfortably because of low weight on the front wheels. But for heavy cars and also as a luxury feature power steering provides lots of ease.
Hydraulic Power Steering
Hydraulic power steering uses high pressure fluids for assisting the steering movement. It uses a plunger type arrangement for its working. When the driver turns the steering wheel, it opens up the flow or pressurized fluid in such a way that helps to turns the wheels in the required direction.
Electric Power Steering
Electric power steering works with the help of an Electric Motor and a control unit which has some sensors. The motor runs on battery and will use electric power to assist the movement of steering when the driver turns the wheel.



