The implementation of the principles of the theory of dimensions and mathematical analysis in the development and evaluation of methods of control of tightness of the cylinder-piston group of internal combustion engines

The expediency of realization of the theory of dimension in research on the formation of functional linkages of diagnostic parameters and status parameters. Controls the state of the cylinder-piston group (tspg) internal combustion engine (ice) flow of blow-by gas requires the introduction of the clarifying signs in connection with the peculiarities of the patterns of air flow and the size of the leaks. According to the results of mathematical analysis of the equations confirmed the assumption that the extreme values of the function. It is established that the nature of the change function is convex, it does not preclude the discrepancy between the final diagnosis of the actual state of Chu (small flow rate for large leaks). It is established that the exclusion of erroneous diagnosis in the control of the state of Chu in the flow of crankcase gases during engine operation in the starting mode without fuel supply requires the introduction of additional control parameters. As one of them can be used is regulated according to the type of main engine frequency of rotation of the crankshaft.