1. Basic Information and Positioning

• Target Audience : Dongfeng Liuzhou Automobile’s new-energy vehicles (hybrid and plug-in hybrid models) are used in the engine power‑transmission system or the timing‑drive mechanism.
• Component Role : The engine’s core driving gear assembly serves as the power source, driving the driven gear or chain to transmit torque and convert rotational speed. It is a critical component for ensuring stable operation of the engine’s power output and timing system, directly impacting transmission efficiency and operational reliability.
• Supply Attribute : Specialized gear components supplied to Dongfeng Liuzhou Motor, designed to meet the installation dimensions, fit tolerances, and performance requirements of its new‑energy vehicle engines. These parts can directly replace the original equipment, ensuring optimal matching 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 : A disc-shaped external gear design, with the outer ring featuring uniformly distributed involute teeth and the inner ring equipped with a splined shaft bore and a mounting flange, representing a typical engine-driven gear configuration.
• Tooth Design The external teeth are of an involute cylindrical gear profile, meshing with the driven gear or chain to transmit power or provide timing drive. The tooth geometry parameters are directly matched to the engine’s speed and torque‑transmission requirements, ensuring reliable power transmission.
• Installation Structure The inner ring features a splined bore designed to mate with the engine’s output shaft for torque transmission; the flange surface is equipped with multiple evenly spaced bolt holes for secure attachment to the engine shaft or other components. The flange surface undergoes precision machining to ensure coaxial alignment with the engine shaft, 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 to withstand the engine’s demanding operating conditions—high rotational speeds, high torque, and cyclic loading—while resisting wear, pitting, and fracture. Precision‑machined tooth profiles and mounting surfaces ensure low noise and high‑efficiency operation, enhancing the vehicle’s overall power performance and reliability.
• Compatible Scenarios The engine drive gear and the primary timing gear for Dongfeng Liuzhou Motor’s hybrid and plug-in hybrid models can also be adapted to the transmission system components of certain pure‑electric vehicles, serving as critical core components that ensure the stable operation of the vehicle’s powertrain.