Greening of Agricultural and Forestry Tractors

Tkáč, Zdenko; Hujo, Ľubomír; Tulík, Juraj; Kosiba, Ján; Uhrinová, Daniela; Šinský, Vladimír

doi:10.11118/actaun201462051135

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…These trials have to be carried out by an organisation independent of tractor manufacturers due to the ob-jectivity of independent assessment of a tested tractor. For this purpose, a specially designed laboratory device was used to observe the operational conditions of the machine (Brdarić et al 2009;Turza, Kopiláková 2011;Burg et al 2012;Máchal 2013, Porteš et al 2013Tkáč et al 2014). The increase of technological parameters causes considerable wearing of components and also decrease of their durability (Kučera, Rousek 2003;Drabant et al 2010;Turza, Kopiláková 2011;Majdan et al 2012).…”

mentioning

confidence: 99%

Monitoring of operation loading of three-point linkage during ploughing

Hujo¹,

Tkáč²,

Tulík³

et al. 2016

Res. Agric. Eng.

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Hujo Ľ., Tkáč Z., Tulík J., Kosiba J., Uhrinová D., Jánošová M. (2016): Monitoring of operation loading of three-point linkage during ploughing. Res. Agr. Eng., 62: 24-29.The research was focused on operational measurements of tractor plough tools and their subsequent utilisation and simulation under laboratory conditions by a hydrostatic simulator. In this field, theoretical and experimental works were focused on tractors, whereby the proposal of laboratory test arose out of the loading characteristics of the three-point linkage of the tractor. These characteristics were obtained from the agricultural tractor's operation in plough aggregation. Measurements were performed with the following tools: tractor with carrier-mounted four-mouldboard plough PH1-435 and tractor with Kuhn plough manufactured by. The subject of these measurements was to obtain the time courses of forces and pressures in the hydraulic system of the three-point linkage during ploughing with carrier-mounted and semi-mounted ploughs. For objective comparison of the obtained results during experimental measurements, we determined the characteristics of measurement conditions focused on physical and mechanical properties of the soil -bulk density, moisture, penetrometer resistance and slide strength of the soil.

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mentioning

confidence: 99%

Monitoring of operation loading of three-point linkage during ploughing

Hujo¹,

Tkáč²,

Tulík³

et al. 2016

Res. Agric. Eng.

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“…A flow control valve of the measuring device allows the hydraulic heating of oil fill before filtration. This measuring device was used also by [25,26] for the measurement of the universal oil flow rate through tractor-implement hydraulic system and a hydraulic heat of the tractor oil fill before the measurement.…”

Section: External Filtrationmentioning

confidence: 99%

Filtration Systems Design for Universal Oils in Agricultural Tractors

Majdan¹,

Tkáč²,

Abrahám³

et al. 2017

Tribol. Ind.

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Three filtration systems using the tractor hydraulic circuit were proposed and verified during the tractors operation. Using the tractor-implement hydraulic system and filter body with accessories the universally useful filtration systems were designed. The designed filtration systems are the second stage of universal oil filtration whereas the first stage is the standard tractor filter. The decrease in the content of iron reached the values 25.53 %, 32.95 % and 41.55 % and the average decrease in oil contamination characterized by average value of decrease in content of iron, copper and silicium reached values 24.3 %, 24.7 % and 35.53 % in dependence on the filtration system and an oil contamination level. The decrease in contamination level verified the ability of designed filtration systems for agricultural tractors.

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“…Moreover, the pollution of air, soil, or water may occur by leakage from equipment or mishandling. 1,2 From such perspective, the largest contamination caused by mineral oils can be observed in industry and transport. They are used in machines, engines, vehicles, hydraulic and transmission systems, and so on, where they have the secondary function of providing lubrication and cooling.…”

Section: Introductionmentioning

confidence: 99%

Study of the Regeneration Cleaning of Used Mineral Oils – Ecotoxicological Properties and Biodegradation

Hybská¹,

Veľková²,

Samešová³

et al. 2018

Chem.Biochem.Eng.Q.

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The aim of the study was to establish and compare the model of the biodegradability and ecotoxicological properties of oil samples in aqueous environment.The unused new mineral oil Turbinol and used (after 1 year of usage) recovered oil Turbinol purified by the electrostatical method were the tested samples. For the determination of the ecotoxicological properties, the test organisms used were seeds of Sinapis alba L. and the small aquatic crustaceans Daphnia magna. Preliminary tests were positive and determined the acute toxicity with the values of IC 50 and EC 50 . Biodegradability was determined by the manometric method, in tests which lasted 28 days. Tests of toxicity were positive, and the samples were found to be hard to biodegrade. Determination of the oil composition by gas chromatography with mass detection (GC -MS); found that the composition of the electrostatically cleaned oil is comparable to the new oil, which is confirmed by the results obtained with the response inhibition in selected tests. Regeneration extends the oil life, reducing the cost of disposal of waste oils, saving fossil raw materials, thus belonging to the environmentally friendly techniques.

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Greening of Agricultural and Forestry Tractors

Cited by 6 publications

References 10 publications

Monitoring of operation loading of three-point linkage during ploughing

Monitoring of operation loading of three-point linkage during ploughing

Filtration Systems Design for Universal Oils in Agricultural Tractors

Study of the Regeneration Cleaning of Used Mineral Oils – Ecotoxicological Properties and Biodegradation

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