In this article, the analysis of belt tension measurement instruments for the gas-distributing mechanism of automotive internal combustion engines is presented. The review and analysis of belt tension measurement instruments of the gas-distributing mechanism of leading foreign manufacturers was conducted. Classification of methods for measuring belt tension is carried out. It is concluded that the mechanical belt tension indicators do not provide sufficient measurement accuracy. The classification of electronic belt tensioners is considered. The main disadvantages of modern electronic measurement instruments of belt tension of the gas distribution mechanism of automobile internal combustion engines are revealed. A digital device for measuring the belt tension of the gas distribution mechanism of automotive internal combustion engines, developed at Togliatti Polytechnic University, is presented. Structural and schematic diagrams of the device for measuring belt tension, as well as working diagrams of the device, are given. The developed instrument is universal and can also be used to measure the tension of any belts, for example, for driving a car generator. The proposed method for measuring the tension of the gas-distributing belt and the generator can be further adapted to the use for motor vehicles of various automakers (including foreign ones) that are equipped, in particular, with electric start systems with a capacitive energy storage and a battery.
The causes of technological errors are quite numerous and varied, and they can be classified according to various criteria, for example, by the type of technological operations (errors in the machining operation of parts, winding and laying the windings into stator’s slots, etc.). The program performs an automated calculation of the characteristics of the generator when the input dimensional parameters of the core change within the limits of the tolerance field for each of them set by the technical specifications (TS). The algorithm of the program is based on the method of calculating a three-phase synchronous generator with a cranked rotor. To assess this effect, a system of interconnected computer programs and mathematical models has been built, with which it is possible to determine the weight of the influence of technological deviations in the manufacture of the generator on its performance and the characteristics of the electrical system as a whole. Reducing the variation of the generator reliability indicators can be achieved by phased assessment and timely adjustment of the quality level of design, production and ensuring their connection with the quality management system.
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