Description And Operation: Geartrain: Notes
Power is transmitted from the torque converter to the Ravigneaux geartrain components through the input shaft and forward clutch cylinder.
- The geartrain contains a Ravigneaux planetary set connected by dual pinion gears.
- By holding or driving certain components of the gearset, 4 forward ratios and one reverse ratio are obtained and transmitted to the output shaft. The ratios are as follows:
| Gear Ratio | |
|---|---|
| 1st | 2.84 to 1 |
| 2nd | 1.55 to 1 |
| 3rd | 1.00 to 1 |
| 4th | 0.70 to 1 |
| Reverse | 2.32 to 1 |
- Components of the geartrain can be held by bands or clutches and driven by clutches only.
This transmission uses:
- two bands.
- two one-way clutches (one roller, one mechanical diode).
- four friction clutches.