Plakhtiy N. Motor petrol identification to immittance characteristics

This thesis is devoted to the problem of motor petrol identification according to electric parameters. It is suggested to present the test unit as double-pole component, whose admittance parameters reflect its physicochemical properties. The concept of such identification is to compare admittance active and reactive components on chosen test signal frequencies of controlled and standard benchmarks of the same motor petrol octane number. The implementation of this concept provides multivariate comparison, which diminishes the possibility of falsification. According to the results of the implemented research, the equivalent circuit of the test unit has been improved, and it has been suggested to present it with four-element scheme. At the same time, the definition method of such circuit element together with use of mono-frequent test signal source is being proposed. Methodological and instrumental errors of measuring conversion have been analyzed, sensing devices and their wiring diagrams have been improved, which ensures invariance of the results towards spurious parameters.