The assessment of the impact of the chosen exploational conditions of hydraulic arrangement on the working liquid condition

Abstract

Hydraulic systems in modern vehicles and agricultural machines have many components. In order to achieve high efficiency of the system, the system requires an accurate filtration system that allows you to reduce the amount of contaminants. Therefore, an important aspect is to determine the content of impurities in the working liquid, so we can diagnose and then predict the durability of the entire hydraulic system. This paper presents selected methods and means of state assessment, as well as the methodology for testing the working fluid. The results of experimental studies conducted in accordance with the developed methodology have been presented, which made it possible to obtain an appropriate analysis of results and draw appropriate conclusions. The results of the research confirmed the validity of the research activities undertaken using the passive experiment.

Impact of the epidemiological situation in Poland in 2020 on the public transport system

“…In the tested operation system, the damaged tram is directed to the serviceability subsystem, where it undergoes renewal (servicing) processes during an epidemic, the situation in which a suspected person meets in the middle of public transport is also counted to such a state, and the bus must be disconnected from traffic and disinfected. before it becomes operational again [15][16].…”

The Multiple Criteria Assessment on the selected vegetable oils for the lubricating engine

“…Parameter values have been collected from many papers of other authors [1,7,9,13,[16][17][18][19][20][21][22][23][24] and own research [4,6]. At the same time, it should be remembered that the main criterion for assessing individual oils is their performance in the context of the most important operating parameters, which should be the basis for their classification [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41].…”

Functioning of public transport systems in the conditions of the COVID-19 pandemic on the example of a selected urbanized area

“…One of the basic functions of computer programs supporting maintenance services is the registration of data on individual vehicle states. After implementing such systems, it is possible to automatically generate periodic reports containing various damage indicators, including indicators defined by software users [10][11][12][13].…”