Detection of the possible engine damages in case of a continuous track military vehicles with tribological investigations

Abstract

Detecting the engine failures of the continuous track military vehicles is challenging because their engines are always built-in narrow places covered with armored plates. In the case of the older engines, modern computer diagnostics cannot be used for failure analysis; the solution for these tasks is the visual analysis with the engine disassembly. A possible cost-effective failure analysis method can be the tribological and chemical analysis of the used oil from the engine, which can eliminate the engine disassembly work and as the results of the chemical oil analysis can also provide information about possible fuel or cooling water dilution or the increased wear of engine components. The main goal of this article is to present the failure analysis method through the tribological investigation of the engines of two PTSZ-M type medium-tracked amphibious military transport vehicles.

Selection of engine oils with tribological examinations applicable to specially operated diesel engines

“…A significant difference was observed in an investigation without machines: the MT oil sample could be moved by gravity more easily than MT16P and ÖMV Panzer oil variants, which assume a lower viscosity value on laboratory temperature. The ÖMV Panzer 20W50 type of engine oil was previously analyzed by the authors with the same investigation methodology and the results were already published in a previous journal paper [13], this evaluation only compares the previously published results with the newly produced results with MT16P and MT lubricant variations. Figure 4 presents the measured friction coefficient (top) and mean wear scar diameter (bottom) values in the case of the oil variations under two testing temperatures.…”

Dynamic Processes of Self-Organization in Nonstationary Conditions of Friction

“…Te consequences of the intensifcation of tribochemical processes at the boundary between the lubricant and activated friction surfaces can be corrosion phenomena and fatigue wear with periodic pressure changes in the friction zone [23]. For example, when diesel fuel gets into engine oil, its tribological characteristics deteriorate, the degradation of the lubricant accelerates, and the degree of its oxidation increases [24].…”