Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ľubomir Hujo"'
Autor:
Mirosław Szubartowski, Klaudiusz Migawa, Sylwester Borowski, Andrzej Neubauer, Ľubomír Hujo, Beáta Kopiláková
Publikováno v:
Energies, Vol 17, Iss 1, p 199 (2023)
The share of wind energy in the energy mix is continuously increasing. However, a very important issue associated with its generation is the high failure rate of wind turbines. This situation particularly concerns large wind turbines, which are expen
Externí odkaz:
https://doaj.org/article/bdc92b7e8090403ab5c9c916c85cd56a
Publikováno v:
Applied Sciences, Vol 12, Iss 15, p 7777 (2022)
The article refers to the proposed test equipment used to monitor the service life of hydrostatic transducers and fluids under constant or dynamic operating pressure loading. The proposed laboratory test equipment enables simultaneous testing of hydr
Externí odkaz:
https://doaj.org/article/42d7a9bf8ebe47838dd41fe3e004edb8
Autor:
Juraj Jablonický, Patrícia Feriancová, Juraj Tulík, Ľubomír Hujo, Zdenko Tkáč, Peter Kuchar, Milan Tomić, Jerzy Kaszkowiak
Publikováno v:
Journal of Marine Science and Engineering, Vol 10, Iss 1, p 1 (2021)
The technical and environmental parameters of the diesel internal combustion engine using two new samples of biofuels SAMPLE 1 and SAMPLE 2 were evaluated in this paper. SAMPLE 1 and SAMPLE 2 biofuels were tested on a LOMBARDINI LDW 502 internal comb
Externí odkaz:
https://doaj.org/article/357d5f17ba0c4635b6d2590adda587f1
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 62, Iss 5, Pp 939-944 (2014)
In this paper, there are monitored and compared the parameters of tractor three-point hitch control. Comparisons were carried out under laboratory conditions for two types of regulation. The first one was a standard mechanical and the second one was
Externí odkaz:
https://doaj.org/article/5d560cc3936a44f898d9776e337f07de
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 62, Iss 5, Pp 1135-1139 (2014)
This publication deals with the draft of measurement chain for application of synthetic organic liquid Hydros Uni in agricultural tractor Zetor Proxima 7441. The used organic liquid was evaluated on the basis of its effect on the technical condition
Externí odkaz:
https://doaj.org/article/552d9da213554bd39a9099e7e5184031
Publikováno v:
Journal of Central European Agriculture, Vol 14, Iss 4, Pp 1592-1601 (2013)
Agricultural and transport equipment is ideally suited to use hydraulic oils. After engine oils, hydraulic fluids are the second most important group of lubricants. More than 85 % of these materials are currently mineral oil-based. In view of their h
Externí odkaz:
https://doaj.org/article/31f28119825940d4a7b39ef8a86d95c3
Autor:
Ján Kosiba, Zdenko Tkáč, Ľubomír Hujo, Juraj Tulík, Peter Ševčík, Vladimír Šinský, Milan Rašo
Publikováno v:
Journal of Central European Agriculture, Vol 14, Iss 4, Pp 1432-1442 (2013)
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 hydr
Externí odkaz:
https://doaj.org/article/f6db1c3548114f3f9fdd27f0d708f7a3
Autor:
Pavel Máchal, Zdenko Tkáč, Ján Kosiba, Juraj Jablonický, Ľubomír Hujo, Marián Kučera, Juraj Tulik
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 61, Iss 5, Pp 1313-1319 (2013)
The present contribution deals with solves problem of research of testing device to monitor of hydrostatic pumps durability about dynamic loading under laboratory conditions. When carrying out the design of testing device are based on load characteri
Externí odkaz:
https://doaj.org/article/e63edec5c65841179ca38686a333c6f0
Publikováno v:
Research in Agricultural Engineering, Vol 63, Iss 1, Pp 1-9 (2017)
The paper deals with the properties of newly developed synthetic biodegradable fluid in terms of its operational and physico-chemical properties. The evaluated fluid is a new biodegradable fluid MOL Farm UTTO Synt, which belongs to the group of unive
Externí odkaz:
https://doaj.org/article/be3a1e2e77f746ca8d5cdafc216704f5
Autor:
Lubomir Hujo, Jozef Nosian, Marcin Zastempowski, Jan Kosiba, Jerzy Kaszkowiak, Matej Michalides
Publikováno v:
Measurement + Control, Vol 54 (2021)
The present article deals with the physical properties monitoring of the transmission-hydraulic fluid, and changes of those properties due the operating load of the hydraulic pump in laboratory conditions. Tests of the transmission-hydraulic fluid we
Externí odkaz:
https://doaj.org/article/051f4a85e4bb44149b9abd95e0d75063