Vehicles

Opublikowano: 06.04.2014 22:37

Subject name Vehicles
Type of subject               Specialization
Summary ECTS 3
Form of course 30h lecture, 15h laboratory
Lecturer                           Prof. Andrzej Reński, Ph.D., D.Sc.; Hubert Sar, Ph.D.
A brief outline:
Lecture
  • Classification of automobiles. Models of elastic wheel rolling on rigid road surface. Tyres of road vehicles. Structure and properties of tyres.
  • Equation of planar motion of automobile. Drag of motion of automobile. Rolling resistance, air drag, grade resistance, inertial resistance. Drag force and power.
  • Sources of drivetrain. Types of engines, characteristics. Balance of forces and power. Adjusting engine characteristics for the drivetrain of automobile. Characteristics of accelerating.
  • Equation of decelerated motion. The course of stoppage process of automobile. Times of driver reaction time. Driving in traffic congestion - keeping safe distance.
  • Requirements for the braking process. Braking efficiency. Changes of axles' loads. Braking stability. The course of unit braking forces. Rate of braking forces between axles.
  • Kinematics of curvilinear motion. Geometrical dependences in curvilinear motion. Judgement of manoeuvrability. Side slip phenomenon of tyres.
  • Dynamics of curvilinear motion. Equation of curvilinear motion. Dependence between steer angle of wheels and angular velocity. Under- and oversteer.
  • Tests of steering judgement. Steady-state motion. Non-steady-state motion.
  • Stability. Critical velocity. Rollover.
  • Model for description of normal vibrations of automobile. Discoupling of vibrations of front and rear axle of automobile.
  • Amplitude-frequency characteristics.
  • Road unevenness counteracting. Road unevenness spectra. Counteracting of vibrations on the passenger. Requirements referring to the comfort and safety level.
Laboratory
  • Measurements of automotive chassis in static conditions.
  • Investigations of dynamic properties of vehicle suspension.
  • Investigations of dynamic properties of vehicle.
  • Investigations of steering unit and steering linkage.
  • Investigations of braking unit of automobile.
  • Investigations of floor panel of automobile.