Ing. Radim Dundálek, Ph.D.

E-mail:   dundalek@fme.vutbr.cz 
Dept.:   Institute of Automotive Engineering
Dept. of Powertrain
Position:   Assistant Professor

Education and academic qualification

  • 2002, Ing., Faculty of Mechanical Engineering, branch Transport Engineering
  • 2006, Ph.D., Faculty of Mechanical Engineering, branch Desingn and Proces Engineering

Career overview

  • 2005-2006, engineering technician for science and research, Institute of Trasport Engineering
  • 2006-present, assistant professor, Institute of Automotive Engineering
  • 2007-2020, ZETOR TRACTORS a.s., senior designer - engines development
  • 2020-2022, MVVS, spol. s r. o., executive director
  • 2022-present, Motorpal, a. s., senior development - application department

Pedagogic activities

  • Theory of Internal Combustion Engines (QTS)
  • Vehicle Accesories (QVP)
  • Engines and Drives (EPO)
  • Internal Combustion Engines (QSM)
  • Automotive Technology (JDT)

Scientific activities

  • Internal Combustion (IC) Engines Dynamics
  • Hydrodynamics Bearings
  • Tractor engines
  • High pressure injection systems
  • Exhaust gas aftertreatment - diesel particulate filters, selective catalytic reduction technology

Non-University activities

Projects

  • Five Cylinder Crankshaft Balancing Optimalization, author
  • Projekt 1M6840770002: Josef Božek Research Centre for Engine and Vehicle Technologies II, member of research team

Supervised courses:

Publications:

  • DUNDÁLEK, R.:
    Plain Bearings in 5-cylinder In-line SI Engine,
    Dynamika tuhých a deformovatelných těles 2006 IV. mezinárodní konference. Sborník příspěvků, pp.41-46, ISBN 80-7044-782-6, (2006), Fakulta výrobních technologií a managementu UJEP Ústí n. L.
    conference paper
    akce: Dynamika tuhých a deformovatelných těles 2005, Ústí nad Labem, 12.10.2005-13.10.2005
  • DUNDÁLEK, R.:
    Behaviour of hydrodynamic bearings under various working conditions,
    Sborník abstraktů, pp.17-25, ISBN 80-213-1510-5, (2006), Česká zemědělská univerzita v Praze, Fakulta technická
    conference paper
    akce: KOKA 2006 - XXXVII. mezinárodní konference kateder a pracovišť spalovacích motorů českých a slovenských vysokých škol, Kostelec nad Černými lesy, 19.09.2006-20.09.2006
  • DUNDÁLEK, R.:
    Elastohydrodynamické modely ložisek jako moduly virtuálního motoru
    dissertation
  • DUNDÁLEK, R.:
    Optimalizace vyvážení klikové hřídele pětiválcového motoru,
    FSI Junior konference 2005, (2006), Vysoké učení technické v Brně, Fakulta strojního inženýrství
    conference paper
  • DUNDÁLEK, R.:
    Simulation of Plain Bearing Behaviour,
    Dynamika tuhých a deformovatelných těles 2005, pp.25-32, ISBN 80-7044-688-9, (2005), Univerzita J. E. Purkyně v Ústí nad Labem, ÚTŘV
    conference paper
    akce: Dynamika tuhých a deformovatelných těles 2005, Ústí nad Labem, 12.10.2005-13.10.2005
  • DUNDÁLEK, R.:
    Virtual Engine in Ansys and Adams Environment,
    PERNER'S CONTACT 2004, pp.157-164, ISBN 80-7194-633-8, (2004), Univerzita Pardubice, Dopravní fakulta Jana Pernera
    conference paper
    akce: Perner's Contact 2004, Pardubice, 10.02.2004-11.02.2004

List of publications at Portal BUT

Abstracts of most important papers:

  • DUNDÁLEK, R.:
    Plain Bearings in 5-cylinder In-line SI Engine,
    Dynamika tuhých a deformovatelných těles 2006 IV. mezinárodní konference. Sborník příspěvků, pp.41-46, ISBN 80-7044-782-6, (2006), Fakulta výrobních technologií a managementu UJEP Ústí n. L.
    conference paper
    akce: Dynamika tuhých a deformovatelných těles 2005, Ústí nad Labem, 12.10.2005-13.10.2005

    Hydrodynamic plain bearings are mostly used for crankshaft support in cylinder block of 4-stroke SI engines. The same is true for con-rod support on crankpin. Usage of plain bearings in combustion engines is allowed by force feed lubrication. Design of plain bearing enables formation of hydrodynamic lubrication film, which ensures low abrasion and high durability. This important mechanical point is also featured by restriction of ability of vibration transfer from crankshaft to engine block, which directly decreases noise radiated from engine. Main objective of lubrication is to detach two relatively moving parts by oil film, which thickness is higher than sum of surface roughness of both parts. Greatness of fluid friction is not in contradistinction to solid friction dependent on material quality of moving parts, but on oil properties such as its dynamic viscosity, velocity of motion, size of friction areas and minimal rest gap.
  • DUNDÁLEK, R.:
    Behaviour of hydrodynamic bearings under various working conditions,
    Sborník abstraktů, pp.17-25, ISBN 80-213-1510-5, (2006), Česká zemědělská univerzita v Praze, Fakulta technická
    conference paper
    akce: KOKA 2006 - XXXVII. mezinárodní konference kateder a pracovišť spalovacích motorů českých a slovenských vysokých škol, Kostelec nad Černými lesy, 19.09.2006-20.09.2006

    Hydrodynamic plain bearings represent an important member in combustion engines. They influence key parameters of power train units such as durability, wear-out, vibrations and noise. Their behavior is described by Reynolds differential equation. This equation is solved for several bearing states (about 60 eccentricities and 60 misalignment angles) prior to the dynamic analysis. The results are stored in databases of non-dimensional reaction forces. The aim of endeavor is to implement topical design model of plain bearing into the complex calculation model of combustion engine called virtual engine. Virtual engine is created in multi-body system, which is suitable for kinematical and dynamic simulation of very difficult mechanisms. Rigid but first of all flexible parts are used. Subject of interest are plain bearings which can work under various working conditions such as different gas force, bearing clearance and oil viscosity. Effect of oil supply type on oil pressure and oil flow is also included. Influence of these parameters is monitored on main bearing trajectories and bearing load polar diagrams.
  • DUNDÁLEK, R.:
    Elastohydrodynamické modely ložisek jako moduly virtuálního motoru
    dissertation

    xxx
  • DUNDÁLEK, R.:
    Optimalizace vyvážení klikové hřídele pětiválcového motoru,
    FSI Junior konference 2005, (2006), Vysoké učení technické v Brně, Fakulta strojního inženýrství
    conference paper

    The paper deals with computational modelling of powertrain units. It was mentioned five variations of five cylinder inline SI engine crankshaft. Torsion vibration of crankshafts and crank mechanisms were "the order of the day". Torsion vibrations were investigated in revolution range 1200 - 6000 min^-1. Fourier transformation hepl to discover harmonic component of torsion vibration. Crankshafts were supplied on hydrodynamic plain bearings. Torsion spectrums, polar diagrams and trajectories of main bearing are illustrated in this paper too.