Abstract
In principle, every vehicle is equipped by a suspension system, which usually consists of springs and shock absorbers. The main purpose of the suspension system is to eliminate vibration of sprung and unsprung masses. Therefore, the proper operation conditions of the shock absorbers affect in a fundamental way total running properties of vehicles. However, during operation, shock absorbers are being worn out or they can even be damaged. Then, such a situation is unwanted and it has to be detected as soon as possible. The content of this article is focused on analysis of vehicles’ shock absorbers defects. Methods for detection of possible shock absorbers faults are presented. Further, a proposal of the method for detection of a state of a hydraulic shock absorber during its operation is presented. The method uses identification of the temperature change of a hydraulic shock absorber during operation.
Highlights
Diagnostics and control of the technical conditions of transport facilities is an essential attribute of their operation, because due to comprehensive monitoring, the necessary level of reliability, safety and stability of freight and passengers transport can be achieved [1,2]
The research is based on the task of reducing costs, labor-intensive maintenance, improving the quality of maintenance, reducing the time to restore the operational condition of vehicles with timely detection of the idle shock absorbers and their subsequent replacement during operation, improving the economic efficiency of operation, transportation and help to carriers to secure themselves against accidents on tracks and breakdowns during operation [49,50,51]
The method is proposed for determining a defective shock absorber, which is as follows:
Summary
Diagnostics and control of the technical conditions of transport facilities is an essential attribute of their operation, because due to comprehensive monitoring, the necessary level of reliability, safety and stability of freight and passengers transport can be achieved [1,2]. An important parameter of technical conditions of vehicles, which determines the comfortable performance and affects the safety of transport, is efficiency of the shock absorbers, which are used to improve the dynamic qualities of vehicles through use of damping properties of their structural elements [3,4,5]. Regarding the absence of the needed methodology for determining the failure of shock absorbers during operation in practice, there are such situations, when 50 % of defective shock absorbers per locomotive exist The change of their temperature or the gradient of the heating rate of any particular object during the vehicle running is one of the important characteristics of the working shock absorbers [6,7,8,9]
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