Design and Fabrication of a Four-Wheel Steering System Model

In four wheels steering the rear wheels turn along with the front wheels thus increasing the steering efficiency of the vehicle. The direction of steering the rear wheels relative to the front wheels is dependent on the operating conditions. At low-speed wheel movement is noticeable, in order that rear wheels are steered the other way to that of the front wheels. At high speed, when steering adjustments are subtle, the front wheels and therefore the rear wheels turn within the same direction. By changing the direction of the rear wheels there's reduction in turning radius of the vehicle which is efficient in parking, low speed cornering and high-speed lane change. In city driving conditions the vehicle with higher wheelbase and track width face problems of turning because the space is confined, an equivalent problem is faced in low-speed cornering. With this project we aim to show a four-wheel steering system which is a comparatively new technology, that imposes maneuverability in cars, trucks and trailers. In standard two wheels steering vehicles, the rear set of wheels are always directed forward therefore and don't play a lively role in controlling the steering in four-wheel steering mechanism the rear wheel can turn left and right. To reduce the complexity in the driving controls. The aim of 4WS system may be a better stability during overtaking maneuvers, reduced sensibility to lateral wind, neutral behavior during cornering, nowadays all vehicles use two-wheel steering system, but the efficiency of the two-wheel steering (2WS) vehicle is established that it is still low in comparison to the four wheel steering (4WS) system car. So, this project is predicated on the way to prove that the 4WS is better than a 2WS in terms of turning radius.