Browsing Ústav automobilního a dopravního inženýrství by Author "Kučera, Pavel"
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Acoustic Identification of Turbocharger Impeller Mistuning—A New Tool for Low Emission Engine Development
Píštěk, Václav; Kučera, Pavel; Fomin, Oleksij; Lovska, Alyona; Prokop, Aleš (MDPI, 2020-09-14)At present, exhaust gas turbochargers not only form the basis for the economical operation of petrol, diesel or gas engines of all power categories, but also have an irreplaceable role on reducing their emissions. In order ... -
Analyses of truck powertrain torque and vibration
Kučera, Pavel; Píštěk, Václav (JVE Intenational, 2017-05-30)The article deals with an analysis of the mean value of the torque of the truck with 8x8 drive. Torque was measured using a noncontact device on the powertrain shaft. This shaft is used to drive the first front axle. For ... -
AUTOMATIC DIFFERENTIAL LOCK CONTROL IN A TRUCK – STRAIGHT DRIVE
Kučera, Pavel; Píštěk, Václav; Porteš, Petr (Institute of Thermomechanics Academy of Sciences of the Czech Republic, 2016-05-09)The paper deals with the creation of control algorithm for locking differential of the truck. This algorithm is based on assumptions of the ZF ADM system and it is created using software Simulink-Stateflow. The article ... -
Calculation of Loads on Carrying Structures of Articulated Circular-Tube Wagons Equipped with New Draft Gear Concepts
Lovska, Alyona; Fomin, Oleksij; Kučera, Pavel; Píštěk, Václav (MDPI, 2020-10-23)This article deals with the dynamic load and strength of the carrying structures of articulated circular-tube wagons. The study was conducted on the carrying structures of wagons equipped with new draft gear concepts. The ... -
Comparison of torsional vibration dampers in terms of the dissipated power amount
Píštěk, Václav; Kučera, Pavel (JVE Intenational, 2018-05-22)Reducing of frictional losses between moving parts of drivelines is a permanently current topic for both conventional internal combustion engines and modern hybrid or electric drives. The application of low viscosity oils ... -
A Computational Model of Powertrain Components in Simulink
Kučera, Pavel; Píštěk, Václav (Brno University of Technology, 2014-05-12)The article deals with the development of a computational model of an engine, a transmission and a clutch. These parts of the powertrain were created using blocks from the libraries of the Simulink software while the input ... -
Computational modelling of dynamic loads of a container under viscous interaction with a flat wagon in sea transport
Fomin, Oleksij; Lovska, Alyona; Píštěk, Václav; Kučera, Pavel (JVE International, 2020-05-07)The article deals with the computational modelling of dynamic loads of a container under viscous interaction with a flat wagon transported by a train ferry. The calculation was made with the finite element method in ... -
Dynamic Load and Strength Determination of Carrying Structure of Wagons Transported by Ferries
Lovska, Alyona; Fomin, Oleksij; Píštěk, Václav; Kučera, Pavel (MDPI, 2020-11-11)A rapid development of economic relations between states has required an introduction of combined rail/ferry transportation. A feature of this type of transportation is the possibility of wagons traveling by sea on specially ... -
Dynamic Load Modelling within Combined Transport Trains during Transportation on a Railway Ferry
Lovska, Alyona; Fomin, Oleksij; Píštěk, Václav; Kučera, Pavel (MDPI, 2020-08-18)The development of foreign economic activity of the Eurasian states led to the introduction of rail and ferry transportation. It is important to note that the current normative documentation does not fully cover the issues ... -
Effective Mistuning Identification Method of Integrated Bladed Discs of Marine Engine Turbochargers
Píštěk, Václav; Kučera, Pavel; Fomin, Oleksij; Lovska, Alyona (MDPI, 2020-05-25)Radial turbine and compressor wheels form essential cornerstones of modern internal combustion engines in terms of economy, efficiency and, in particular, environmental compatibility. As a result of the introduction of ... -
Heavy-Duty Transmission Gear Shift Investigation by Virtual Prototypes
Prokop, Aleš; Kučera, Pavel; Řehák, Kamil (JVE Intenational, 2018-05-22)This paper deals with application of virtual prototype to the heavy-duty vehicles gearbox concept. Used methodology was developed and validated on the single stage gearbox concept. Afterwards the virtual prototype was ... -
Measuring the yaw mass moment of inertia of vehicle
Hejtmánek, Petr; Blaťák, Ondřej; Kučera, Pavel; Porteš, Petr; Vančura, Jan (ČVUT-Praha, 2013-07-06)The paper describes the procedure of the vehicle yaw moment of inertia determination. The effect of the oscillation period measurement error onto total measurement error is analysed. The measurement stand for moment of ... -
MODERN TOOLS FOR VEHICLE DEVELOPMENT
Porteš, Petr; Kučera, Pavel; Píštěk, Václav; Fojtášek, Jan; Zháňal, Lubor (Brno University of Technology, 2017-05-15)The development of vehicles is constantly advancing, therefore, it is required to have more sophisticated tools for the development of a complete vehicle or its individual parts. This article describes modern tools used ... -
Optimal design of structure in rheological models: an automotive application to dampers with high viscosity silicone fluids
Píštěk, Václav; Klimeš, Lubomír; Mauder, Tomáš; Kučera, Pavel (JVE International, 2017-10-09)Dynamic torsional vibration dampers are for a long time inherent integral components of internal combustion engines. One of the most common types of the dynamic dampers is a silicone damper. It has been, for many years, ... -
Parameter effecting the experimental determination of modal properties
Řehák, Kamil; Kučera, Pavel; Prokop, Aleš (JVE Intenational, 2018-05-22)The investigation of structure dynamic behavior can be done by finding modal properties, which are based on the relation of force and vibration response. The information about exact force value is in most application ... -
Prototyping a System for Truck Differential Lock Control
Kučera, Pavel; Píštěk, Václav (MDPI, 2019-08-20)The article deals with the development of a mechatronic system for locking vehicle differentials. An important benefit of this system is that it prevents the jamming of the vehicle in difficult adhesion conditions. The ... -
The research of the influence of viscous interaction between wagon and container on the dynamic load during transportation by rail ferry
Lovska, Alyona; Fomin, Oleksij; Píštěk, Václav; Kučera, Pavel (JVE International, 2020-05-07)This paper proposes the improved scheme of interaction of containers with the load-bearing structure of the wagon when transporting by rail ferry. In order to ensure the stability of the container balance in the event of ... -
Research to improve traction and dynamic quality of locomotives
Píštěk, Václav; Kučera, Pavel (JVE International, 2017-09-27)The article reviews and analyzes available theoretical and experimental studies aimed at improving the tractive and dynamic characteristics of locomotives. Based on the information received, the authors formulated the ... -
Results of the experimental research of dynamic vibration processes of the rail for rolling stocks fault diagnostics
Píštěk, Václav; Kravchenko, Kostiantyn; Kučera, Pavel (JVE International, 2017-09-27)The paper discusses the preconditions of the methodology development of diagnosis system for assessing dynamic impact of the rolling stock on the basis of processing and analysis of data obtained in operation on the results ... -
SHAFT VIBRATION OF THE TRUCK
Kučera, Pavel; Píštěk, Václav (Brno University of Technology, 2017-05-15)This article describes analysis of vibrations in a powertrain of a truck with 8x8 drive. It may be caused by a deflection of the rotating drive shaft. The aim was to reduce the vibrations, therefore, a transient computational ...