INCREASING OF THE INFORMATIVEVALUE OF AUTOMOBILE ENGINE DIAGNOSTICS BY MEANS OF TECHNICAL ENDOSCOPY

Abstract

Car engine is the most complex and important unit of a car. A lot of technical, economic and environmental automobile performance depend on it. Therefore, the development of advanced methods for diagnosing the technical state of engine mechanisms and systems is of great practical importance. The most part and labor intensity of the total number of malfunctions accounts for the cylinder-piston group (GPG). The purpose of this work was to increase the informative value of the process of diagnosing the engines of VAZ front-wheel drive vehicles by using technical endoscopy. To obtain information about the level of technical condition, it is not advisable to disassemble a unit or assembly in a good operation condition, since, first, it is associated with considerable labor costs, and second, and what is important, each disassembly and change of the mutual position of the used parts leads to the reduction of the residual life by 30 - 40%. Using a technical endoscope to obtain information about the technical state of the GPG provides unique opportunities for visual diagnostics. Due to the use of a technical endoscope, it became for the first time possible to proceed while diagnosing internal combustion engine GPG to the evaluation of design parameters of the technical state, such as: the state of the hone net, grooves, scoring, scratches, which could only be performed before by automobile disassembly. In general, technical endoscopy increases the informative value of the process of cylinder-piston group diagnosing. The use of a technical endoscope reveals unique possibilities for an operative assessment of the technical condition of the object being diagnosed in order to shorten the time of detection and subsequent elimination of malfunctions.