Complex Powertrains in Mobile Machinery
Holders: Prof. Klemenc Jernej, Prof. Nagode Marko, Assist. Prof. Oman Simon
Subject description
- Lecture: Partition of mobile machinery: Aircrafts; Water vessels; Ground vehicles; Specialities of different types of mobile machinery.
- Lecture: Introduction to ground vehicles: Railway vehicles – necessary conditions for driving stability of railway vehicles; Road- and off-road vehicles; Caterpillar vehicles.
- Lecture: Traction-force balance for wheeled vehicles: Rolling resistance; Air-drag resistance; Inclination resistance; Trailer resistance; Determination of the limit driving characteristics with the method of torques or power.
- Lecture: Multi-level gear transmissions for adapting the output characteristics of the internal-combustion engines to the ideal traction characteristic: Basic geometry of spur- and helical gears with involute tooth flank; Tooth thickness at arbitrary diameter.
- Lecture: Multi-level gear transmissions for adapting the output characteristics of the internal-combustion engines to the ideal traction characteristic: Correction of involute gears for equal axial distances; Influence of a gear correction to the root- and contact strength of gears.
- Lecture: Multi-level gear transmissions for adapting an output characteristics of the internal-combustion engines to the ideal traction characteristic: Automatic transmission as an assembly of planetary gears; Derivation of a basic equation of a planetary gear; Determination of the inner (stable) and outer gear ratios for the planetary gear.
- Lecture: Multi-level gear transmissions for adapting the output characteristics of the internal-combustion engines to the ideal traction characteristic: Rolling and switching power of a planetary gear; Power-flow through a planetary gear by considering the power losses.
- Lecture: Longitudinal vehicle movement: Power-flow between the traction and no-traction wheels; Vehicles with multiple traction axles; Torque and power distribution among multiple traction axles.
- Lecture: Longitudinal vehicle movement: Problem of torque balancing among the traction axles; Problem of angular-velocity balancing among the traction axles; Differential planetary gear with bevel gears; Differential planetary gear with worm gears – Torsen differential gear.
- Lecture: Differential planetary gear with bevel gears: Geometry of bevel gears; Plane bevel gear; Forces acting on a pair of bevel gears.
- Lecture: Differential planetary gear with worm gears: Geometry of worm gears; Power efficiency of worm gears; Forces acting in a contact of a worm gear and its helical gear wheel.
- Lecture: Special geometries of differential planetary gears in mobile machinery: Self-locking differential gear; Automatic self-locking differential gear; Combined planetary gear assembly for torque vectoring.
- Lecture: Pneumatic tyre as a link between a ground vehicle and a driving surface: Pneumatic tyre as a friction wheel; Cornering stiffness of the pneumatic tyre.
- Lecture: Pneumatic tyre as a link between a ground vehicle and a driving surface: Kinematics of driving through a bend; Lateral stability of the vehicle when driving through the bend.
- Lecture: Pneumatic tyre as a link between a ground vehicle and a driving surface: Micro-slip of the pneumatic tyre during acceleration; Micro-slip of the pneumatic tyre during deceleration; Micro-slip of the pneumatic tyre when driving through the bend.
