International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
A Spring Loaded Flexible Bumper Controlled Automotive Braking Rushikesh Ambadas Mule1, Avinash Sunil Kasar2, Monali Thombare3, Bilal Shaikh4 1Rushikesh
Ambadas Mule, Mechanical Engineering, SSM Adsul Polythechnic, Chas, A’nagar, Maharashtra, India Sunil Kasar, Mechanical Engineering, SSM Adsul Polythechnic, Chas, A’nagar, Maharashtra, India 3Professor Monali Thombare, Dept. of Mechanical Engineering, SSM Adsul Polythechnic, Chas, A’nagar, Maharashtra, India 4Professor Bilal Shaikh, Dept. of Mechanical Engineering, SSM Adsul Polythechnic, Chas, A’nagar, Maharashtra, India 2Avinash
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Abstract – In almost all of the cases of vehicle accidents, the basic reason cited is failure to apply the brakes at the right time. Considering this failure, a mechanical system having spring loaded flexible bumper is designed. During obstacle, the spring is compressed to apply clutch and brake. A system consists of sensor, pneumatic bumper system and intelligent braking system, increases complications and its cost [1]. Proposed hardware system is simple and does not require any of these components. Through the testing, accuracy for the compression of spring is obtained. This paper presents well designed prototype of spring loaded flexible bumper controlled automotive braking system. Key Words: Mechanical spring, bumper, automotive braking system
many chances of accidents. Hence, there is no provision to minimize the damage of vehicles. Thus, the current designed system only fairly reduces the damage of vehicle and/or passengers [4].
2. MECHANICAL SPRING Springs are mechanical elements that exert forces or torques and absorb energy. The stored absorbed energy is released later. Springs are made up of metal. Metal springs can be replaced by plastic springs in case of light loads. Structural composite materials are used by some applications which require minimum spring mass. Blocks of rubber can be used as springs, in bumpers and vibration mountings of electric or combustion motors. Figure 1 shows mechanical spring.
1. INTRODUCTION Automobile vehicles have become integral part of our lives. With growing number of vehicles on road, the numbers of traffic accidents are also increasing. It is important to prevent the chances of accidents and to protect the passengers when accidents occur. Air bags provide safety, but they are costly. Safety, being a matter of prime importance, cannot be compromised for cost. Hence our attempt is to provide a reliable and safe system at low cost. Though there are different causes for these accidents but proper technology of braking system and technology to reduce the damage during accident can be effective on the accident rates. In today’s world to prevent the accidents by vehicles, implementation of automatic braking system is must [2]. Therefore, pre-crashing system is demanded. Such a system will prevent accidents on road. In conventional vehicles there are different mechanism operated for braking system like use of hydraulic, pneumatic, or mechanical system. But all these braking mechanisms get the input signal directly from the driver by application of force on brake pedal. Thus, braking of vehicles is totally manual operated. So, if the driver fails to see the obstacle in front of his driving vehicle or fails to apply proper braking force on the brake pedal, he may lose the control of his vehicle, leading to accident [3]. Also the driver may not able to pay complete attention when driving at night. So there are © 2017, IRJET
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Impact Factor value: 5.181
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Fig -1: Mechanical spring
3. WORKING PRINCIPLE DESIGN & ANALYSIS 1.1 Construction of Project Figure 2 shows actual diagram of project. The aim is to design and develop a spring controlled automotive braking system. Here flexible bumper is attached to the chassis of the vehicle by means of spring. Hence bumper gets compressed against spring force on the application of external force. Hence this bumper is called as flexible bumper because it gets pressed under the application of external force. Hence this bumper is pressed due to obstacle coming front of the vehicle. A link is used which is pivoted to the chassis and connected to the flexible bumper and link of brake pedal. In this prototype, the components such as sensor, pneumatic bumper system and intelligent braking system are replaced by a single spring. When obstacle comes ISO 9001:2008 Certified Journal
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