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International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395-0056

Volume: 11 Issue: 04 | Apr 2024

p-ISSN: 2395-0072

www.irjet.net

Variable Steering Mechanism (Ackerman <> AntiAckerman) Akhil Zade1, Dr. Vithoba Tale2, Atharva Mulay3, Sarvadnya Hippalgaonkar4, Nachiket Chavan5 UG Student, Dept. of Mechanical Engineering, JSPM Rajashri Shahu college of Engineering, Tathawade, Pune, Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------

Abstract - The conventional Ackermann steering

system remains a fundamental and widely adopted design in vehicle engineering, offering advantages such as superior cornering stability, reduced tire wear, enhanced maneuverability, consistency across speed ranges, safety benefits, and engineering simplicity. Its widespread use in various vehicles underscores its importance in optimizing handling, safety, and tire longevity. On the other hand, the anti-Ackermann steering system, though less common, finds relevance in specific contexts. It is particularly suited for performance driving in motorsports like drifting, autocross, and track racing, where customized handling characteristics are crucial. Additionally, it has applications in specialized vehicles and serves as a platform for engineering experimentation. In the context of the presented mechanism, the goal is to develop a steering system that combines both Ackermann and antiAckermann characteristics, allowing drivers to customize their steering setup based on preferences and the driving environment. This innovation aims to provide versatility in steering geometry, addressing the distinct advantages of both systems and offering a solution that adapts to diverse driving styles and conditions. Consider factors such as vehicle speed, turning radius, and user input in developing a robust and efficient variable steering system transitioning from Ackermann to AntiAckerman geometry through a variable steering mechanism addresses various challenges associated with high-speed turning on race tracks.

geometry poses challenges during high-speed turns, leading to tire scrubbing, increased drag, and potential understeer or oversteer tendencies. This geometry might fail to optimize tire contact patches, affecting vehicle handling on diverse corners of a race track. Fixed steering ratios further exacerbate the difficulty of achieving precise control during high-speed maneuver, potentially causing discomfort and reduced driver confidence. Addressing these challenges necessitates a dynamic steering system that intelligently adapts to varying driving conditions. Such a system must consider multiple variables, including vehicle speed, turning radius, and user input. The critical goal is to design a mechanism capable of dynamically adjusting steering geometry based on these factors. This adaptive system aims to optimize vehicle performance, ensuring a smoother and more responsive driving experience across diverse driving scenarios.The project titled "Variable Steering Mechanism" focuses on designing and implementing a system that allows the seamless transition between Ackerman and AntiAckerman steering geometries in an automobile. Ackerman steering is traditionally employed for smooth turns at low speeds, while Anti-Ackerman steering is preferred for stability at high speeds. The proposed mechanism aims to dynamically adjust the steering geometry based on driving conditions, optimizing vehicle performance and handling. This adaptive system seeks to enhance maneuverability, reduce tire wear, and improve overall safety by providing an intelligent and versatile solution for varying driving scenarios

1.1 Steering Mechanism Steering mechanism in vehicles allows the driver to control the direction to travel by turning wheels. There are various types including rack and pinion, recirculating ball and electronic power steering each with its own advantages, strength and applications. It must also maintain straight ahead motion of vehicle while it encounters road bumps, pot holes etc. Also must operate with minimum effort during operating vehicle.

1.INTRODUCTION Imagine that you are driving your car at high speeds in a car race and suddenly you notice a sharp turn ahead. What will you do? If you try to reduce the speed you would not be able to quickly get back the same momentum and if you take a turn at the same speed, you may face an instability while driving. It would impact drivers' comfort and confidence. So, what's the solution to it? Here we come up with a solution to “Design and implement a variable steering mechanism” for a car, capable of transitioning smoothly between Ackermann and Anti-Ackerman geometries. The system should adapt to driving conditions, providing optimal steering angles for both lowspeed maneuverability (Ackermann) and high-speed stability (Anti-Ackermann). The Ackermann steering

Impact Factor value: 8.226

1.2 Problem Statement a) In traditional Ackermann steering geometry, the inside wheel has a tighter turning radius than the outside wheel, causing tire scrubbing and increased drag during high-speed turns.

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