Electrically Controlled CVTs

Opublikowano: 05.05.2014 13:58

Subject name Electrically Controlled CVTs
Type of subject               Specialized
Summary ECTS 2
Form of course 15h lecture, 15h laboratory
Lecturer                           Arkadiusz Hajduga, Ph.D.
A brief outline:
Lecture
  • The role of mechanical gears in the drive.
  • The impact of the use of mechanical transmission on energy parameters of the drive system.
  • Continuous Variable Transmission - definition, the idea of action and the basic characteristics in the electric and hybrid power train.
  • Types of CVTs.
  • Materials used in the construction of the CVTs,
  • The method of selection of the range of gears in vehicles with electric and hybrid power trains
    • the process of driving the vehicle,
    • the process of regenerative braking.
  • Control methods of change of the ratio of CVT
    • by mechanical means,
    • by the hydraulic,
    • by electric.
  • Control algorithm of ratio change in electric and hybrid power train - minimization of energy consumption.
  • Precise control of the CVT ratio - stepper motors.
  • The role and work of the stepper motor -reducer assembly in  electric or hybrid power train control system - executive signals and feedbacks analysis to the correct operation of the drive - the appointment of the CVT control.
  • The real arrangement of the CVT ratio change by a stepper motor.
  • Control system of stepper motor.
  • The planetary gear with two degrees of freedom as an example of an electrically controlled CVT - implementation of shifting.
Laboratory
  • The determination of the CVT gear ratios depending on the application and configuration of the power train.
  • The influence of the CVT's ratio on the energy parameters of hybrid and electric power train.
  • Determination of CVT's control algorithm for selected conditions.
  • Laboratory, comparative research of the CVT's ratio characteristics
  • Studies of the planetary gear as the electrically controlled CVT.
  • Determination of the efficiency of the planetary gear with two degrees of freedom for the selected driving cycle.