Engine oil analysis - effective instrument to evaluate reliability of tractor engines

Abstract

The economy of operation of agricultural machinery depends on its technical condition. In the case of damage to machinery that is associated with leakage of lubricants, there is contamination of the soil, water and also contamination of the food chain. The engine oil analysis is one of the effective methods to determine the optimum exchange intervals of oil, to monitor the technical conditions of machinery individual components and to predict equipment failure. The paper presents and compares the results of the experimental evaluation of degradation after the engine oil has exceeded the exchange interval recommended by the manufacturer for the specially-developed lubricant TORQ-GARD used in tractors by the manufacturer John Deere. The lubricant degradation was evaluated by FTIR spectrometry and viscosity assay. The engine wear process was evaluated by non-disassembly diagnosis based on the analysis of the wear particles in the lubricant. Although John Deere tractors were exposed to high loads during many agricultural works, no negative changes of the parameters of the used lubricant or increased wear of the engine occurred. The combination of FTIR spectrometry, monitoring of viscosity and ferrography proved that the specially developed TORQ-GARD oil satisfies the highperformance demands on the engine needs, as declared by its producer; therefore, it is suitable for the demanding operational conditions in agriculture.

The Performance of a Car with Various Engine Power Systems – Part II

“…Development and operational tests are also ongoing in the case of other operating fluids. In this regard, it is worth mentioning the tests of engine oils [22][23][24] and brake fluids [25].…”

Comparison of Selected Parameters of a Planetary Gearbox with Involute and Convex–Concave Teeth Flank Profiles

“…In addition, the issues of wear mechanisms of mechanical systems of vehicles and combustion engines, as well as transmissions, are still an important issue. Many researchers show interest in damage to rotary units, such as turbochargers [16], kinematic pairs of charge exchange systems in combustion engines [17][18][19], injection systems [19][20][21][22][23], diesel engine [24][25][26][27], and the reliability of various types of gears [6,7,13,15,28].The main advantage of the convex-concave gears is the lowering of the contact pressure using teeth flank meshing and the lowering of the slide ratios compared to involute gears [29]. The research shows that the scoring resistance of tooth flanks can be significantly raised by using special convex-concave profiles in plain tooth gears [30].The S-gear tooth flank profile features a concave shape in the lower part of the dedendum such that the mating gears exhibit the convex-concave contact in the vicinity of the contact start and contact end.…”