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Using of the Trucks with Electrical Drive on the Farm Enterprises
(2024) Dembitskyi, Valerii; Sakhno, Volodymyr; Murovanyi, Igor; Maiak, Mykola
A problem of using of the electric drive trucks on the farm enterprises was investigated in present research work. According to the results of the litera-ture sources analysis there was found a great interest of scientists and users concerning the usage of the commercial electric vehicles in the agriculture. There was made a mathematical modeling of the power consumptions by trucks of gross weight 4000, 8000, 10000 and 12000 kg taking into account their different operating conditions, a movement by an asphalt concrete, road-metal, ground pavement. There was determined that a vehicle move-ment on a pavement with a high value of rolling resistance coefficient leads to an abrupt increasing of the power consumption, up to 2…2,5 times. There was made a comparison of the values of received power consumptions with the results that were received by another scientists using another research methods. A deviation of received results of the specific power consumptions consists within 5…20 %, that is accessible and says about their sufficient convergence. A perspective of further investigations should be directed to a possibility of quick replenishment of the power supply, a determination of rational correlation between different power sources, and to a receiving of detailed characteristics of the vehicles operating conditions that are used in the agriculture.
Research of an Influence of a Traffic Flow Movement Intensity Change on the Possibility of Nonstop Passage of the Traffic Lights Objects
(2022) Mazyliu, Pavlo; Sitovskyi, Oleg; Prentkovskis, Olegas; Dembitskyi, Valerii; Murovanyi, Igor; Bulik, Yurii
There were examined the problems of passage of the regulated parts of a road. There were investigated the changes of a traffic movement intensity in Lutsk (Ukraine) during the spread of Covid-19 pandemic. The graphic dependences of the drivers’ actions estimation while passing the traffic lights objects on a chosen movement route at the beginning of quarantine measures, during the least movement intensity and at the increasing of movement intensity, were obtained. A method of increasing of a possibility of the traffic lights objects nonstop passage was offered.
Comparative Estimation of Maneuverability of the Multi-Track Road Trains of Different Layout Schemes
(2025) Sakhno, Volodymyr; Murovanyi, Igor; Razboinikov, Oleksandr; Palamarchyk, Olekcii; Dembitskyi, Valerii
Today, in the constructions of multi-link road trains, two main layout schemes are used, as a rule - trailer (car + n trailers) and semi-trailer (tractor car + n semi-trailers). Previously conducted studies established that the maneuverability indicators of the road trains can be determined on wheels rigid in the lateral direction, that is, according to kinematic models, which are based on the angles of assembly of the road train links. These angles are defined for both a three-link trailer and a semi-trailer vehicle train, for different locations of the extended link. For the semi-trailer road trains, the requirements for maneuverability are not met, and therefore the trailer links must be equipped with more or less complex control systems. With a direct control drive on the front axles of the second and third semi-trailers, when turning at 90º and 180º, only the first layout scheme satisfies the requirements for maneuverability.

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