ASSESSMENT OF THE FUNCTIONAL RELIABILITY OF A COMPLEX SYSTEM OF VEHICLE ELEMENTS

Abstract

Due to the development of technological progress in the automotive industry, the issue of increasing the reliability of motor vehicles is becoming increasingly relevant. The need to improve the efficiency of vehicle operation in order to ensure the necessary volume of transportation work at minimal cost requires constant attention to improving the operational reliability of vehicles. The complexity of this task lies in the fact that a vehicle is a complex system that consists of multiple components and parts that work together to perform its functions. Based on the analysis of the functional reliability and unreliability of vehicle components, which is an object with a complex system, the article discusses ways to increase the vehicle's unreliability by using the laws of probability distribution theory in the analysis of the reliability of a complex vehicle system. Taking into account the method of increasing the reliability of a vehicle by redundancy, the reliability of a complex system has been analyzed, which involves structural redundancy with the presence of additional elements in the system that are not functionally necessary. A comparative analysis of the main methods for increasing the reliability of a complex system of vehicle components has been performed. It has been established that element-by-element and overall redundancy can significantly increase the reliability of complex systems, but they have several disadvantages that complicate the design by duplicating each element and increasing the number of elements in the system, which reduces its overall reliability. Therefore, increasing reliability is often achieved not by means of reservations, but by increasing the strength of parts and improving their wear resistance. When analyzing the reliability of complex vehicle systems, such measures are based on the use of probability theory laws.