Power Flow In Third and Fourth Gear

Power Flow in 3rd Gear: As in 1st and 2nd gear, drive clutch A is engaged. Drive clutch B is now also engaged. Both sun gears in the double planetary gear train are driven (reaction). As a result, the gear train moves as an assembly and the gear ratio Is achieved only by the front single planetary gear train (gear up - ratio change).




Power Flow in 4th Gear: Drive clutches A and E are engaged in 4th gear. Clutch A drives the sun gear 3 (4). Clutch E drives the planet carrier in the double planetary gear train. Together with the double planet carrier, the long planet gears and the short planet gears drive the internal gear 2 in the direction of engine rotation (gear up - ratio change).