Research and Correlation of Diagnostic Methods for Assessment of the State of Oil Filling in Cycloid Gearbox

Baron, Petr; Kočiško, Marek; Dobránsky, Jozef; Pollák, Martin; Cmorej, Tomas

doi:10.1155/2015/597841

Cited by 9 publications

(2 citation statements)

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“…Some recent studies (Bekana et al 2015, Sejkorová andGlos 2017) found that the optimal oil change, for good engine performance, mainly depends on the performed tasks and on the oil quality. Recent studies have investigated the characteristics and wear of the oils used in the engine and in the transmission and hydraulic systems of the farm tractors, and new types of oil are now available, complying with the new engine and transmission requirements and with the environmental aspects (Baron et al 2015, Kosiba et al 2016, Kučera and Aleš 2017, also extending the intervals in the lubricant oil change. The equation of the ASABE Standard D497.7 for the engine oil consumption considered a service interval of 100 hours, while nowadays the recommended service interval is up to 500-700 hours, depending on the model and manufacturer´s recommendations.…”

Section: Discussionmentioning

confidence: 99%

Oil Consumption in 4WD Farm Tractors Used in Forestry Operations

Airoldi

Calvo

Manzone

2020

Croat. j. for. eng. (Online)

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Farm tractors are still widely used in many forestry operations. Predicting fuel and lubricant costs is difficult because their consumption depends on a number of factors such as hours worked and operations performed. Fuel and lubricant consumption is important since it can have an impact at both the economic and environmental level. Many fuel models have been studied in the last decades, but few studies have focused on oil consumption. The ASABE (American Society of Agricultural and Biological Engineers) Standard suggested a model for predicting engine oil consumption of farm tractors of the 1980s, which are potentially different from modern tractor engines. In addition, the recent widespread application of semi- and full-power-shift and continuous variable transmissions and the high number of hydraulic applications increased the amount of lubrication oil for transmission and hydraulic systems.For these reasons, we analysed 133 4WD recent model farm tractors used in forest operations with the aim to study:Þ engine, transmission and hydraulic system oil capacitiesÞ engine oil change intervals as recommended by the manufacturers.A new equation for engine oil consumption, as a function of the rated engine power, was first used and statistically analysed. It was similar to the equation developed by other authors (with a mean difference of 28%, decreasing to 11% at the highest engine power), but well below the ASABE model (with an average engine oil consumption three times higher). Another equation of total oil consumption related to the rated engine power was then studied and compared with a recent study. The results showed an average difference of 18%, decreasing to 8% at the highest engine power. The differences, due to a different machine dataset (only 4WD farm tractors that can be used for forestry operations were analysed) are, however, minimal also in the engine oil consumption model if compared with the oldest ones: a new proposal is therefore necessary, with new and affordable models for correctly evaluating economic and environmental forestry operation costs when using farm tractors.

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Section: Discussionmentioning

confidence: 99%

Oil Consumption in 4WD Farm Tractors Used in Forestry Operations

Airoldi

Calvo

Manzone

2020

Croat. j. for. eng. (Online)

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“…Since its launch, through continuous development, this reducer has gone through several improvements and, in addition to the basic T series, there are also E, H, G, and M series available (Table 1). These bearing reducers are used in combination with servomotors and are applied where high kinematic accuracy, high rigidity, backlash-free operation, and high torque capacity are required [1].…”

Section: Introductionmentioning

confidence: 99%

Research of Dynamic Characteristics of Bearing Reducers of the TwinSpin Class in the Start-Up Phase and in the Initial Operating Hours

Kočiško,

Baron,

Paulišin

2023

Machines

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This paper describes the results of research in the field of monitoring dynamic characteristics of the TwinSpin cycloid bearing reducer made by SPINEA. The research in this area resulted from the requirement to monitor the condition of high-precision bearing reducers and to assess the non-linear behavior of the kinematic structures of the monitored bearing reducers, specifically to determine the optimal start-up time of a particular bearing reducer class and to plan its maintenance. The condition of contact surfaces in the operational process was identified, and the lubricant applied to the monitored class of reducers was assessed. Analyses of the applied lubricant were carried out in order to identify and monitor changes in the technical condition of the bearing reducer. The aim of the measurements was to verify the start-up time of the bearing reducer, to assess the correlation between the total content of iron particles in the lubricant and an increase in kinematic backlash in the engagement of cycloidal wheels and reducer bearings after start-up and after about 1000 h of operation, and to propose recommendations to the operator for the implementation of short-term dynamic vibration, noise, and temperature tests before the reducer itself is put into operation.

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