Power flow in 5th gear, function - GF27.10-P-3015G

TRANSMISSION 722.6

Fig 1: Identifying Power Flow In 5th Gear

Principle of power transmission in 5th gear

Torque from the torque converter is increased via the propeller shaft (1) and all three planetary gearsets and transferred to the output shaft (5).

The following are not engaged:

Rear multi-disk brake (B2)

Center multi-disk brake (B3)

Freewheel F2

Front multi-disk clutch (K1)

Front planetary gear set

The input shaft (1) drives the internal gear (V4). In drive mode the sun gear (V1) is supported via the locked freewheel (F1) and in overrun mode in the housing via the engaged front multi-disk brake (B1). The planet gears (V2) roll over the fixed sun gear (V1) and provide an increase in torque between the internal gear (V4) and the planet carrier (V3). The planet carrier (V3) moves at reduced speed in the direction of engine ration.

Rear planetary gear set

The center multi-disk clutch (K2) is engaged and transmits the input speed of the input shaft (1) to the planet carrier (H3) via the hollow gear (M4). The internal gear (H4) turns at a reduced speed because of its mechanical connection to the front planet carrier (V3). The planet gears (H2) turn between the ring gear (H4) and the sun gear (H1). The sun gear (H1) moves at increased speed in the direction of engine rotation.

Center planetary gear set

The hollow gear (M4) rotates at input speed due to the engaged center multi-disk clutch (K2). The rear multi-disk clutch (K3) transmits a higher speed to the sun gear (M1) due to the connection to the sun gear (H1). The planet gears (M2) turn between the ring gear (M4) and the sun gear (M1). The speed of the planet carrier (M3) and the output shaft connected to the planet carrier (5) lies between that of the ring gear (M4) and the sun gear(M1). This provides a step-up ratio.

	Torque converter, location / task / design / function		GF27.20-P-5100G
	Planetary gear set, location / task / design / function		GF27.50-P-5100G
	Multiple-disc brake, location / task / design / function		GF27.51-P-5100G
	Multi-plate clutch, location / task / design / function		GF27.51-P-5101G