What is the principle of a transfer case?
1 Answers
The principle of a transfer case: Each shaft of the transfer case is supported by two tapered roller bearings, and the bearing tightness is adjusted with corresponding shims. In vehicles equipped with a transfer case, when driving with all wheels on uneven roads or curves, or when the front and rear drive wheels have unequal radii due to tire wear, it can lead to engine power consumption and wear on tires or drivetrain components. To overcome this drawback, torque is generally distributed to each drive axle based on the axle load ratio. Some transfer cases are also equipped with an asymmetric planetary gear inter-axle differential with a differential lock. The function of a transfer case: In multi-axle drive vehicles, a transfer case is used to distribute the output power to each drive axle. Transfer cases typically have high and low ranges to further expand the gear ratio and the number of gears when driving in difficult terrain. The purpose of the transfer case is to distribute the power output from the transmission to each drive axle and further increase torque. The transfer case is also a gear transmission system, which is independently mounted on the frame. Its input shaft is connected to the output shaft of the transmission via a universal joint drive, and the transfer case has multiple output shafts, each connected to the drive axles through universal joint drives. Most transfer cases bear greater loads than the transmission due to their role in reducing speed and increasing torque. Therefore, the constant-mesh gears in transfer cases are helical gears, and the bearings are also supported by tapered roller bearings.
