1. Basic Information and Positioning

• Target Audience : Dongfeng Liuzhou Automobile’s new-energy vehicles (pure electric and hybrid models) are equipped with a drive-axle differential assembly.
• Component Role The differential’s core driven component—the ring gear—meshes with the differential planet gears, transmitting torque from the final drive and enabling differential speed adjustment between the left and right wheels. It is a critical component for vehicle steering and power distribution during straight‑line driving.
• Supply Attribute : A specialized gear ring designed to match Dongfeng Liuzhou Automobile’s requirements, conforming to the installation dimensions, fit tolerances, and performance specifications of its new‑energy vehicle differentials. It can directly replace the original‑equipment part, ensuring optimal compatibility and consistency within the drivetrain.

2. Material and Process Characteristics

• Materials ：20CrMnTi Low-carbon alloy carburizing steel is a classic material for heavy-duty gear components.

3. Structural Features

• Overall structure : Annular internal gear ring design (external gear ring structure), with the outer ring featuring uniformly distributed involute teeth and the inner ring equipped with a mounting flange and locating holes—this is a typical differential driven-gear configuration.
• Tooth Design The external teeth are of an involute cylindrical gear profile, meshing with the differential’s pinion gear to transmit power. The tooth geometry parameters are directly matched to the differential’s gear ratio and load-carrying capacity, ensuring reliable transmission of high torque.
• Installation Structure The inner ring is equipped with multiple evenly spaced bolt holes for secure attachment to the differential housing, enabling torque transmission and component positioning. The flange surface is precision‑machined to ensure coaxial alignment with the differential housing, thereby preventing vibration and axial movement during high‑speed operation.

4. Performance and Application Value

• Core Advantages : The 20CrMnTi material and carburizing‑quenching process enable this gear ring to withstand the high torque, cyclic loads, and impact forces typical of new‑energy vehicle drive axles, while resisting wear, pitting, and fracture. Precision‑machined gear profiles and mounting surfaces ensure low noise and high‑efficiency operation of the differential, enhancing vehicle stability and handling.
• Compatible Scenarios The differential assembly for Dongfeng Liuzhou Automobile’s new‑energy vehicles, which can also be adapted to the differential components of certain hybrid models, is a critical core component that ensures efficient power distribution and stable operation of the vehicle’s drivetrain.