The results of a formalized description of the processes occurring in an internal combustion engine, necessary for solving diagnostic problems

The creation of diagnostic models allows you to formalize ongoing processes, prescribe analysis schemes, create convenient algorithms and automate a number of tasks. The development of diagnostic models of processes occurring during engine operation is important for effective management of its technical condition. The article presents a diagnostic model describing the processes occurring in the engine of military vehicles when cranking the crankshaft without initializing the workflow, which allows us to conclude that the moment of resistance to rotation of the crankshaft and the current consumed by the starter varies sinusoidally, with current maxima corresponding to the next arrivals of pistons at the top dead center. Having fixed the maxima of the sinusoid formed as a result of scrolling the crankshaft by the starter and knowing the order of operation of the cylinders, it is possible to easily draw a conclusion about the technical condition of the parts of the crank and gas distribution mechanisms of the engine.