International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 04 | Apr 2023
p-ISSN: 2395-0072
www.irjet.net
Four Wheel Steering Mechanism Manish Patil1, Kaushal Kini2, Tanish Patil3, Nishant Gharat4, Pranit Mehata5 1,2,3,4 Diploma Students, Department of Mechanical Engineering, St John College of Engineering and Management
(St John Polytechnic), Palghar, Maharashtra, India 401404
5Lecturer, Department of Mechanical Engineering, St John College of Engineering and Management (St John
Polytechnic), Palghar, Maharashtra, India, 401404 ---------------------------------------------------------------------***--------------------------------------------------------------------whole vehicle sideways without turning the vehicle. Here, Abstract - The progress of automobiles for
comes the application of Four Wheel Three Mode which provides the same by steering the rear wheels too as our requirement. It should not be confused with four-wheel drive in which all four wheels of a vehicle are powered. With the help of this system, the rear wheels also can be turned with respect to the direction of front wheels whenever required. The vehicle can be controlled more effectively especially during cornering, parking or when we get into a congested/narrow area. This system finds application mainly in off-highway vehicles such as forklifts, agricultural and construction equipment and mining machineries. It is also useful in passenger cars, mainly SUVs. When both the front and rear wheels steer toward the same direction, they are said to be in-phase and this produces a kind of sideways movement of the car other arrangements are sometimes found on different types of vehicles, for example, a tiller or rear–wheel steering. Tracked vehicles such as tanks usually employ differential steering that is, the tracks are made to move at different speeds or even in opposite directions to bring about a change of course
transportation has been intimately associated with the progress of civilization. The automobile of today is the result of the accumulation of many years of pioneering research and development. An attempt has been made in this project; the Automobile four wheels to act as a steering so that the u turn occurs very easily when compared to ordinary vehicles. Our foremost aim in selecting this project is to use a four-wheel two mode steering system by using bevel and spur gear mechanism. It is also good with regard to economic considerations and automobile applications. The most conventional and general steering arrangement is to turn the front wheels using a hand operated steering wheel which is positioned in front of the driver. The four-wheel two mode steering system is a modification for the present steering which is used for the improvement of easiness for vehicle handling. The four-wheel two mode steering system assists the driver by controlling the steering angle of vehicle’s four wheels as the requirement of the driver, for making the parking and handling at congested areas easier. For meeting the application, the rear wheels steer in the same direction of the front wheels, allowing reduced turning radius or sliding of vehicle to sideways if we are able to transmit the motion that is given on steering wheel to the rear wheels and able to control like front wheels as our requirements, which is the basic idea of our project fourwheel three mode. In convertible four-wheel steering with two mode operation two steering modes can be changed as needed which assists in parking at heavy traffic conditions, when negotiating areas where short turning radius is needed and in off road driving.
1.1 Steering The most conventional steering arrangement is to turn the front wheels using a hand–operated steering wheel which is positioned in front of the driver, via the steering column, which may contain universal joints to allow it to deviate somewhat from a straight line. Primary function of the steering system is to achieve angular motion of the front wheels to negotiate a turn. This is done through linkage and steering gear which convert the rotary motion of the steering wheel into angular motion of the front road wheels.
Key Words: Automobile, Four-wheel, Steering 1. INTRODUCTION
1.2 Problem Statement
Nowadays, the condition of increasing road traffic makes the handling of vehicles more difficult. The present scenario demands an exploration of new vehicle handling mechanisms, which in turn forces us to find an alternative way instead of the current system or a modified steering mechanism for better handling. While the vehicle enters a congested or narrow area there would be no one who doesn’t wish for, if they would be able to reduce the turning radius of their vehicle or if they could move the
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Many four-wheel steering systems faded from popularity by the early 2000s, but the technology has made a comeback with modern machines such as the Porsche 911, Lexus LC 500, Mercedes-AMG GT R and GT C, Lamborghini Aventador, Ferrari 812 Superfast, Ferrari GTC4Lusso, and others. From the GMC Sierra, to the Honda Prelude, allwheel steering has been offered in many different vehicles of all shapes and sizes for the past few decades. While
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