International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 05 | May 2022
p-ISSN: 2395-0072
www.irjet.net
Use and effectiveness of Hydraulic Retarders Prof. Sunil Kadam1, Vatsal Parmar2, Krish Patel3, Siddhesh Hasanale4, Hrutik Jadhav5 1Department
of Mechanical Engineering, Professor, New Horizon Institute of Technology and Management, University of Mumbai, Thane, Maharashtra, India 2345Department of Mechanical Engineering, Student, New Horizon Institute of Technology and Management, University of Mumbai, Thane, Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract—Trucks play an important role in the modern life that we live in. They are used extensively to transport goods from a one place to another whether it be the transport of products like biscuits, soaps, etc from factories to retail outlets and supermarkets or the transport of raw materials and critical components for various industries. Thus we can safely say that transport through trucks occupy a good amount of portion in any logistics chain of many goods and products. But trucks are also responsible for many accidents and one of the reasons for them is the failure or reduction in performance of their breaking systems due to continuous or repeated breaking especially when going downhill in hilly areas. Hence Hydraulic Retarders can be a very good system that can be used to avoid these problems and increase safety.
Hydraulic retarders are designed to give continuous and long term braking unlike conventional brakes. Hydraulic retarders are also free from wear and tear since there is no direct friction contacts which are used in drum or disc brakes. They provide the braking effect by offering resistance to the rotation of wheels by converting the kinetic energy of the truck into heat energy of the oil which is then dissipated through the radiator or a heat exchanger provided in the truck. Because of Hydraulic Retarder the efficiency of Primary conventional braking system increases. Also the conventional braking systems become more reliable and overall they give less maintenance because of less usage. It also enhances the overall safety of Vehicle.
II. CONSTRUCTION AND LAYOUT OF TESTING APPARATUS
Keywords—Hydraulic Retarder; Braking; Overheating of Brakes; Increased Safety and Reliability of Trucks;
I. INTRODUCTION Brakes used in heavy vehicles like trucks are generally disc or drum brakes. These conventional brakes are generally designed to give intermittent and quick braking. Under long and continuous braking for example when going downhill in loaded condition these conventional braking systems tend to heat up. This heat may reduce their braking performance and in some cases can even lead to their failure. Hence to avoid this hydraulic retarders are used to augment and support the conventional braking systems. Hydraulic Retarder is a mechanical device through which speed of High transport vehicles (HTVs) such as truck can be controlled at some amount. It is a secondary Braking system which helps Primary Braking system in Braking by reducing the speed of vehicle, due to which there is less pressure on Primary braking system which may be drum or disc brakes depending upon the truck. This is especially useful when going downhill in hilly area when the truck is loaded. Hydraulic Retarders serve to slow vehicles or maintain a steady speed while travelling down a hill, and help to prevent the vehicle from " running away" by accelerating down the hill. They are usually used as an additional assistance to slow vehicles, with the final braking done by a conventional friction braking system.
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Impact Factor value: 7.529
Fig 1 : Simplified layout of testing aparatus The layout of our testing aparatus is shown as above. We have used a pump of centrifugal type which is coupled to a motor which is used to imitate the wheels of the truck. The
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