The durability test of tractor hydrostatic pump type UD 25 under operating load

Drabant, S.; Kosiba, Ján; Jablonický, Juraj; Tulík, Juraj

doi:10.17221/42/2009-rae

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…The measurement of characteristics is performed by gradually increasing the pressure by the pressure valve TV 3 (up to the nominal pressure value of the measured hydraulic pump HG 2 ). Based on these data, it is possible to determine the flow characteristics of the hydraulic pump Majdan, 2010;Drabant et al, 2010).…”

Section: Methodsmentioning

confidence: 99%

Effect of Ecological Energy Carriers on Flow Characteristics of Tractor Hydraulic Pump

Kosiba¹,

Tkáč²,

Hujo³

et al. 2013

JCEA

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This paper deals with the effect of ecological energy carrier on flow characteristics of a hydraulic pump. A hydraulic oil MOL Farm UTTO Synt was used as an ecological energy carrier. After completing 900 engine hours, the flow efficiency of the hydraulic pump decreased by Δη pr = 1.197 %. Oil samples were taken from the agricultural tractor Zetor Forterra 114 41. These samples were subjected to an IR spectroscopy analysis in an accredited laboratory WearCheck, Hungary. The following oil properties were examined: kinematic viscosity at 40 °C, viscosity index, silicium and ferrum content.Keywords: flow rate characteristics, hydraulic circuit, tractor Abstrakt Predloţený príspevok sa zaoberá vplyvom ekologického nositeľa energie na prietokové charakteristiky hydrogenerátora. Ako ekologický nositeľ energie bol pouţitý hydraulický olej MOL Farm UTTO Synt. Pokles prietokovej účinnosti hydrogenerátora po odpracovaní 900 motohodín bol na úrovni Δη pr = 1,197 %. Z poľnohospodárskeho traktora Zetor Forterra 114 41 boli odoberané vzorky oleja, ktoré boli podrobené rozboru pomocou IR spektroskopie v akreditovanom laboratóriu WearCheck. Boli sledované nasledovné vlastnosti oleja: kinematická viskozita pri 40 °C, viskozitný index, obsah kremíka a obsah ţeleza.

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Section: Methodsmentioning

confidence: 99%

Effect of Ecological Energy Carriers on Flow Characteristics of Tractor Hydraulic Pump

Kosiba¹,

Tkáč²,

Hujo³

et al. 2013

JCEA

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show abstract

“…In most cases, temperature in the transmission and hydraulic system of tractor does not exceed a value of 65 °C. Therefore, these systems are most suitable for use of ecological oils [2,3,9,10,12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ecological Oils on the Quality of Materials of Hydraulic Pump Components

Majdan

Tkáč

Abrahám

et al. 2013

AMR

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This paper presents the effect of three oil types on the quality of hydraulic pumps after testing on a special test bench. The quality of material of hydraulic pump components was evaluated on the basis of its wear. In the special test bench, hydraulic pumps were loaded by cyclic pressure with different oil types. There were tested a mineral oil-based liquid HV and two biodegradable types, i.e. a vegetable oil-based liquid HETG and polyalphaolefin oil-based liquid HEPR. The wear level of hydraulic pumps was evaluated on the basis of flow efficiency and the weight and roughness of internal components. Laboratory scales were used to measure the weight of hydraulic pump components. Results of measured roughness and weights have been graphically compared. We noticed the most significant material wear on bearings and slide plates. The highest loss of weight was observed in the hydraulic pump tested with the ecological oil HETG. The highest loss of flow efficiency (7.3 %) was measured with the same oil type. This paper shows differences in the wear of hydraulic pumps after testing with different types of oils on the basis of selected methods of technical diagnostics.

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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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The durability test of tractor hydrostatic pump type UD 25 under operating load

Cited by 5 publications

References 1 publication

Effect of Ecological Energy Carriers on Flow Characteristics of Tractor Hydraulic Pump

Effect of Ecological Energy Carriers on Flow Characteristics of Tractor Hydraulic Pump

Effect of Ecological Oils on the Quality of Materials of Hydraulic Pump Components

Monitoring of operation loading of three-point linkage during ploughing

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