Differential Assembly: Description and Operation

GENERAL INFORMATION

The rear axle has the following features.

- The wheel bearing is a unit ball bearing (double-row angular contact ball bearing) which incorporates the oil seals and is highly resistant to a thrust load.
- The number of parts has been reduced by integrating the magnetic encoder for ABS wheel speed detection into the wheel bearing.
- ETJ-type on the differential side and EUJ-type on the hub side constant velocity joints are featured in the driveshaft.
- Adoption of the electronic control AWD optimizes the size of the driveshaft constant velocity joint and achieves the weight saving.
- Lead-free grease for the constant velocity joint has been adopted.
- Hexavalent chromium has been eliminated from the dust cover material.
- The electronic control coupling installed in front of the differential, which transfers the drive force to the rear wheels by pushing the clutch in according to the strength of the magnetic attraction generated by the magnetic coil (For more details, refer to Electronic Control AWD).
- Aluminum differential carrier is used for weight saving.
- Optimization of the hypoid gear ratio reduces the torque loss.
- Adoption of the hypoid gear with the same teeth height realizes the downsizing and increases the strength of the coupling.

NOTE:

EUJ (High Efficiency Compact Undercut Joint): The lighter and smaller constant velocity joint compared with the conventional BJ has been achieved by adopting the eight small balls.
ETJ (High Efficiency Compact Tripod Joint): The lighter and smaller constant velocity joint compared with the conventional TJ has been installed.

CONSTRUCTION DIAGRAM