DIAGNOSING METHOD OF SPECIFIC FAULTS’ IDENTIFYING OF GASOLINE ENGINES WITH FUEL INJECTION

• Published in: Vestnik SibADI Vol. 15; no. 1; pp. 69 - 76
• Main Authors: Musayelyants, G. G., Pavlenko, E. A., Sysoyev, D. K.
• Format: Journal Article
• Language: English; Russian
• Published: Siberian State Automobile and Highway University 12.03.2018
• Subjects: car engines’ diagnosis; diagnostic method; diagnostic parameters; integral indicator of failure; ternary system of measurements
• ISSN: 2071-7296; 2658-5626
• DOI: 10.26518/2071-7296-2018-1-69-76

Introduction. Diagnosis of car engines and systems is a complex and high-tech process. In fact, the simplest procedure of diagnostics’ process is the error status code determination from the electronic control memory unit by using the diagnostic scanner. However, such diagnosis could become complicated whether the fault appears, but the codes in the electronic control unit memory are absent. As a result, a vehicle diagnosis proceeds to the next expert diagnosis’ level, where only professionals could help adequately. For the correct diagnosis in this case, the specialist should be significantly experienced in this sphere and, therefore, it imposes a number of requirements to his qualification. Materials and methods. The method for determining the specific defects of the gasoline engines and their systems based on logical analysis of diagnostic parameters with the help of computer technology in the appropriate diagnostic complex is viewed in the article. Results and discussion. Incoming informative diagnostic parameters’ data from the scanner, oscilloscope and analyzer is processed by complex method, consisting of the integral indicators’ determining. Сonclusion. Accordingly, it is proposed to calculate the integral indicator of failure based on the entered ternary system of measurements and, subsequently, to determine the specific fault of engine and its systems by its numerical value, as the result, providing the labor costs’ lowering for defects’ searching.