MATHEMATICAL MODEL FOR THE DETERMINATION OF TECHNICAL STATE OF ELECTRONIC CONTROL SYSTEM OF «KIA CEE'D» MOTOR VEHICLE ENGINE

Abstract

Rapid progress in the sphere of electronics and electrical engineering during last years and decades resulted in drastic increase of the number of electronic components in the motor vehicle. Along with hydraulics and pneumatics electronics penetrated in all the components of modern motor vehicle. Separate electronic components and complex electronic systems become more compact, cheaper and at the same time, more efficient. New possibilities for the application of electronics in the motor vehicle emerge, enabling to enlarge the volume of the available functions.

The given study contains the analysis of the methods and means of diagnostics of electronic systems of the automobile transport. It is established that available methods and means of diagnostics of the engine electronic control system do not allow to determine completely the current technical state, it requires the development of mathematical models for their diagnostics.

As the object of diagnostics the electronic control system of the motor vehicle «Kia Cee'd» engine was chosen. The research contains the analysis of the components of the control system of motor vehicle «Kia Cee'd», as the object of diagnostics. Replacement of real technical devices by their idealized models enables to apply various mathematical methods. Mathematical model, which represents the system of functional dependences between each diagnostic signal and structural parameter is suggested in general form. Diagnostic matrix, comprising the list of faults and features of faults is composed for the control system of the motor vehicles «Kia Cee'd». By means of the developed mathematical model it is possible to improve information-measuring part of the diagnostic devices software, this enables to perform efficiently diagnostics of the control system of motor vehicles «Kia Cee'd» engines. In the process of mathematical model development it is taken into account that the reverse transformation of the faults features quantity in the quantity of structural parameters (faults) of the object was single-valued.

Studies of the suggested mathematical model for the diagnostics of the electronic control system of motor vehicle «Kia Cee'd» engine enable to reveal the faults of the engine systems depending on their features, this will enhance the term of faultless operation both of the engine and transport vehicle.