Borg-Warner Automatic Transmission

INTRODUCTION

The most important elements of an automatic transmission are one or several planetary gears (or epicyclic gears), clutch packs, band brakes and pilot valves.
Epicyclic gears perform several functions:
Coupling between input and output shafts.
At low velocities, it generates high torque at the output shaft.
At high velocities, it reduces the torque at the output shaft.
Rotation direction inversion between the input and output shafts.
The Borg-Warner Automatic Transmission, “MBW”, includes a torque converter and a three-speed automatic system that will allow the student to carry out experiments with different transmission ratios simulating clutches and band brakes. In addition, a freewheel allows the visualization of the engine brake effect.

EXERCISES AND PRACTICAL POSSIBILITIES

1. Demonstration of the operation of an epicyclic gearing system.
2. To check the gear ratio:
   First gear.
   Imposed first gear.
   Second gear.
   Reverse gear.
   Third gear and neutral.
3. To simulate breakdowns:
   Forward gear clutch breakdown.
   Reverse gear clutch breakdown.
   Brakes breakdown.
4. To check the relation between the input motor torque and the output motor torque.
5. To check the relation between the input motor torque and the output motor torque having the transmission brake activated.