Methods for Determining the Needs of Car Service Enterprises in Spare Parts and Developing a Methodology for Their Impact on the Overall Performance of Cars

The article is devoted to methods of determining the needs of a car service enterprise in spare parts and he article is devoted to methods of determining the needs of a car service enterprise in spare parts and developing a methodology for their selection and impact on the overall performance of passenger cars. The groups of the spare parts nomenclature are considered. A number of statistical indicators, actual and regulatory needs of a car service enterprise in spare parts are determined. Their utilization coefficient is determined. A methodology for assessing the degree of influence of an element (part, assembly, system, unit) of a car on its performance is developed. Five stages of implementation of the methodology are proposed. At the first stage, the influence of resource-determining failures on the condition of the car is determined. At the second stage, the impact of failures of parts, assemblies, systems and units in points on the overall performance of the car is assessed. At the third stage, statistical indicators of the collected array of expert assessment databases are determined. At the fourth stage, the array of costs for purchasing spare parts in the distribution system is determined in order to maintain the performance of the car. At the fifth stage, the task of selecting from the initial nomenclature of passenger car elements the most critical and significant in terms of the consequences of failure and the cost of their acquisition is solved. The corresponding conditions for determining the elements that significantly limit the performance of passenger cars are formulated. The methodology has been tested on Renault passenger cars.