System Description

MECHANICAL SYSTEM


System Description

Driving force of engine is transmitted to wheels via torque converter, planetary gear, belt & pulley, differential gear, and others. In addition, with mounting of parking mechanism, secondary pulley is mechanically fixed by shifting the selector lever to "P" position.

Activation state according to each gear shifting






Power transmission of each position

"P" position
- Driving force from input shaft is not transmitted to primary pulley because of idling caused by poor engagement of forward clutch and reverse brake.
- Since the parking pole interlocked with the selector lever becomes into engagement with the parking gear integral with the output shaft to mechanically fix the output shaft, torque from wheel is not transmitted to secondary pulley.











"R" position
- Driving force from input shaft rotates sun gear in opposite direction of input shaft rotation because reverse brake is engaged and internal gear is fixed.
- Therefore primary pulley rotates in opposite direction of input shaft rotation and driving force output is in opposite direction rotation.











"N" position
- Driving force from input shaft is not transmitted to primary pulley because of idling caused by poor engagement of forward clutch and reverse brake.
- Torque from wheel is not transmitted to input shaft because of idling of planetary carrier caused by poor engagement of forward clutch and reverse brake.











"D" and "L" positions
- Since the Forward clutch is engaged, driving force from Input shaft rotates Sun gear in the positive direction via Forward clutch.
- Therefore primary pulley rotates in the positive direction, and driving force is outputted in the forward direction.