International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The report presents investigation of the protective characteristics against knife penetration of several combinations of materials used in armored vests. Experimental results for each combination obtained by testing with two types of knives at various energies of impact are analyzed and interpreted.

The report presents investigation of the protective characteristics against knife penetration of several combinations of materials used in armored vests. Experimental results for each combination obtained by testing with two types of knives at various energies of impact are analyzed and interpreted.

The article presents a numerical analysis of energy balance of an automotive diesel engine and exergy analysis of exhaust gas and cooling systems. A model of the engine was built in advanced simulation code AVL Boost. In order to validate the model a comparison between estimated and real engine effective power was conducted at full load. Energy balance revealed a maximum engine efficiency of 42.1% at full load and 2000rpm. The highest quantity of lost energy contains the exhaust gas. The maximum estimated exhaust gas enthalpy is 108kW at 4000rpm. At the same operating point the cooling enthalpy more than twice lower – 40.2kW. At the engine speed lower than 2000rpm the lost energy in exhaust gas and cooling system has the same quantity. The exergy analysis revealed that waste heat recovery potential in exhaust gas is much higher than cooling system. The results obtained in this study will be further used in a Rankine-Hirn waste heat recovery system development due to increase overall engine efficiency.

In the Division of Vehicle Engineering ,Wroclaw University of Technology, there is realized the grant which aim is to work out the innovative compact EKOMPACT module- the installation of electric energy generation from biomass renewable resources by new technology. Research results (primarily simulation) provide necessary data for any modification of the installation in a way that the implementation of a new solution will be possible in diverse locations which are characterized by different working conditions.

Due to volatile and fast moving markets, increasing competition or more complex product solutions, industrial companies are facing increasingly intricate challenges. High energy consumption, emissions output, resource scarcity and waste are just some of the issues enterprises have to manage. Industry 4.0 focuses on an intelligent and interconnected world in which smart factories represent the connection between digital and physical production networks. This interconnection can lead to a variety of environmental benefits, such as consuming fewer resources by means of intelligent connectivity of objects. The energy consumption of a company can be reduced by using start-stop technologies or big data transparency concerning resource and energy consumption to reach optimization potential in production.

In this article is set out energy-saving technology of oilseeds cultivation as minimizing tillage (using erosion control instruments) to ensure rational use of energy, restore soil fertility, which is optimized ecological state agro-ecosystems. The substantiation of improvement of eco-phyto-sanitary condition of crops, depending on the use of rational methods of energy-saving technology, which reduces the total cost of energy for 24,3-32,5%, the volume of fuel consumption, which improves productivity and increases crop yield at 21-29 %.

We offer decentralized unpowered water lifting, using devices that are installed below a water source, such as a spring. The most promising of the water lifting devices of impulse type is a hydraulic ram. If the hydraulic ram is equipped with a suction tube, it is possible to increase the height difference between the source and the lowest point to the most possible value. If the hydraulic ram is equipped with a torque converter it allows: 1) to adapt optimal operating mode of a hydraulic ram to particular geodesic conditions; 2) to create in advance large-scale hydraulic rams and torque converters and to unitize them for each urgent order 3) in the second circuit, i.e. in the torque converter, any medium may be used as the working fluid: water, oil, coolant, air and so on., that helps produce energy and then transform it into useful function at maximum efficiency (≈ 90%) due to the minimal number of the energy conversion forms.

The original design of a cavitator is a volute (snail) with a tangential inlet connected to the pump and an axial outlet which is attached to the body in the form of a cylindrical tube, which ends with a braking device and a central hole connected to inlet of the pump.
Proposal: 1) to equip cavitator with axial gas extractors in the volute (snail) and at the output from the body, 2) exclude the snail (volute) from the construction and control the interaction of flows by dividing stream leaving the pump into two parts and then merge them in the camera in front of body, 3) organize an axial jet in body with the required structure by using ring nozzles, 4) reduce a vortex component of the current by installing a second straightening snail (scroll) before the body, 5) design the pump as an active generator of elastic vibrations of useful frequencies while maintaining its primary function; – separate it with antivibration bushing.

The main issues are considered in this topic. In this article discusses the using of microwave technology in various fields agriculture production. We have presented the results of improving the quality of agricultural products using microwave processing