Testing electromechanical sensors to ensure reliability in hot environments

In the world there are various methods of testing vehicles and its components used by various car manufacturing companies. Many methods are given in the UNECE regulatory documents in the field of transport, but these documents do not take into account the hot and climatic conditions of car operation. This article presents the road and climatic conditions of Central Asia, which is characterized by peculiar characteristics. The test methods are designed in such a way that, when operating cars in hot climatic conditions, the reliability of the sensors should be ensured when the car runs at least 250,000 km. It is established that in order to ensure the normal operability of sensors operating in hot climates, it is necessary to conduct tests at a nominal ambient temperature 45±5 °C, based on this parameter, a test procedure is built. The test methods are designed in such a way that all tests are carried out in accordance with the current standards in the field of electromagnetic, electromechanical and other electrical parameters of the automotive industry. Schematic diagrams of test benches are also given. The scientific work substantiates the methodology of accelerated reliability tests, in which the temperature is set as the accelerating factor. The tests fully reflect the operational characteristics of the movement of cars in a sharply continental climate with a hot slope of ambient temperature with sharp temperature changes, i. e. the impact of cyclical temperature changes. Based on the conducted research, conclusions are drawn, which reflects the results obtained.