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Design and Modeling of an Experimental Hydraulic Device

Tkáč Z., Halenár M., Kosiba J.

Multidisciplinary Aspects of Production Engineering

2018

Vol. 1, Iss. 1

63--68

The design of the experimental laboratory device is based on the construction of the hydraulic circuits of mobile devices. It is possible to ensure the repeatability of the flow characteristic measurements at the laboratory. This means that in the operating test it is possible to verify the flow characteristics of the hydraulic pump and these results are not affected by the change in the physical properties of the applied liquid. By comparing of the flow characteristics directly on the work equipment (mini-excavator, etc.), the disadvantage is the need for dismantling the hydraulic pump and its mounting on the laboratory device. In some working device removal is not possible, where dismantling is structurally difficult or is time consuming, which increases the cost of their operation.The proposed experimental laboratory device serves to verify the flow characteristics of the hydraulic pump and is also designed to be universal, to test external gear hydraulic pump and hydraulic pump with inclined plate.

Tractor decelometric trials by application of the ecological hydraulic oil

Tkáč Z., Kosiba J., Jablonický J., Šinský V., Shchur T.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

2016

Vol. 5, No 3

171--175

In this article, there is resumed the accomplished impact analysis of biodegradable tractor oil HYDROS UNI application in gear - hydraulic circuit of the tractor Zetor Proxima 7441. This analysis was performed by comparative testing with standard mineral oil PP 80 on the basis of decelometric trials. Decelometric trials were carried out with measuring device XL - MeterTM Pro Gamma. The measurements were executed by the 3rd and the 4th unreduced gear. The results show that the oil HYDROS UNI does not affect decelometric characteristics of the tractor Zetor Proxima 7441.