GUIDED BY: DR. SUWARNA TORGAL PRESENTED BY: NIDHI KESHARWANI P V SHREEJIL PIYUSH DEY PRATIBHA SOLANKI PRIYANK BHARTI SUMEET PATANKAR SUNIL CHOUDHARY
Four-wheel steering, 4WS, also called rear-wheel steering or all-wheel steering, provides a means to actively steer the rear wheels during turning maneuvers. The vehicle responds more quickly to steering input because rear wheel lag is eliminated. 4WS is a serious effort on the part of automotive design engineers to provide near-neutral steering. A vehicle requires less driver input for any steering maneuver if all four wheels are steering the vehicle. 4WS stabilizes all cornering forces generated while responding to steering input. 4WS greatly reduces vehicle’s turning circle thus turning radius reduces up to zero degree.
RED LINE REPRESENT – 4 WHEEL STEERING GRAY LINE REPRESENT – 2 WHEEL STEERING
To analyze the theoretical advantages of four wheel steering system. By manufacturing,we will get practical knowledge of cornering capability, steering response, straight-line stability and low-speed maneuverability of the vehicle. By manufacturing this system, we will implement it in BAJA vehicle.
Modification will made in the rear wheel assembly and addition of one more rack and pinion steering gear box for steering the rear wheels. Then a transfer rod will placed in between the front and rear steering gear box to transfer the motion to rear steering gear box. Bevel gear is used to transmit the rotary motion perpendicularly, so the one bevel gear will introduced in the front steering rod. Other bevel gear will connected to the transfer rod. Two supports will used to support the transfer rod. Transfer rod will connected to the rear steering gear box. Rear steering gear box will be fixed to body by bolts and nuts and the ends of the steering box are connected to the rear wheel hub where the tires will mounted. As the steering will steered, the rear wheels also turn by the arrangements made and the rear wheel turn in the opposite direction.
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