POWERTRAIN SYSTEM OUTLINE [FN4A-EL]

id051701281200

• The powertrain mechanism consists of three pairs of clutches, band brake, brake, one-way clutch, and two pairs of single type planetary gears.

Component

Function

Clutch

Forward clutch

C1

•  Transmits the input torque from the turbine shaft to the front sun gear.

3-4 clutch

C2

•  Transmits the input torque from the turbine shaft to the rear planetary carrier.

Reverse clutch

C3

•  Transmits the input torque from the turbine shaft to the rear sun gear.

Band brake

2-4 brake band

B1

•  Locks rotation of the reverse drum and fixes the rear sun gear.

Brake

Low and reverse brake

B2

•  Fixes the rotation of the front internal gear.

One-way clutch

One-way clutch

OWC

•  Locks the counterclockwise rotation of the front internal gear.
(Directions of rotation is viewed from the torque converter.)

Single type planetary gear

Front planetary gear

—

•  Converts the transmitted driving force of the turbine shaft and transmits it to the primary gear.

Rear planetary gear

—

•  Converts the transmitted driving force of the turbine shaft and transmits it to the primary gear.

Component	Function
Clutch	Forward clutch	C1	• Transmits the input torque from the turbine shaft to the front sun gear.
3-4 clutch	C2	• Transmits the input torque from the turbine shaft to the rear planetary carrier.
Reverse clutch	C3	• Transmits the input torque from the turbine shaft to the rear sun gear.
Band brake	2-4 brake band	B1	• Locks rotation of the reverse drum and fixes the rear sun gear.
Brake	Low and reverse brake	B2	• Fixes the rotation of the front internal gear.
One-way clutch	One-way clutch	OWC	• Locks the counterclockwise rotation of the front internal gear. (Directions of rotation is viewed from the torque converter.)
Single type planetary gear	Front planetary gear	—	• Converts the transmitted driving force of the turbine shaft and transmits it to the primary gear.
Rear planetary gear	—	• Converts the transmitted driving force of the turbine shaft and transmits it to the primary gear.

am3zzn00002596

am3zzn00002597