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Brand: C.OEFT
OE numbers: 48000-02315
Product Name: Transmission Assembly
Compatible model: /
Product status: /
Product weight：72KG
Packaging size: 100*100*100cm
Product packaging: Neutral Packaging
Car Series: Korean
Car Type: For Hyundai
1. Core Function: Power Transmission and Torque Conversion
As the central component of the vehicle powertrain, the 48000-02315 transmission assembly is responsible for transferring power from the engine (or hybrid system) to the drive wheels while adjusting torque and speed according to driving demands. For manual transmission (MT) versions, the assembly uses a 5/6-speed gear set to convert the engine’s high-speed, low-torque output into low-speed, high-torque power for starting and climbing—for example, when a pickup truck starts with a full load, the 1st gear can amplify the engine torque by 3.8 times, ensuring sufficient starting force. For automatic transmission (AT) versions, the assembly integrates a torque converter that softens power impacts during startup and a 6-speed planetary gear set that achieves smooth gear shifts. During high-speed cruising, the torque converter locks up to reduce power loss, while the gear set adjusts to a high-speed ratio (0.72:1) to lower engine speed and improve fuel efficiency. This dual functionality of power transmission and torque conversion ensures the vehicle performs well in both low-speed, high-load and high-speed, low-load scenarios.
2. Adaptive Gear Shifting for Diverse Working Conditions
The 48000-02315 assembly (especially AT versions) is equipped with an intelligent adaptive control system that adjusts gear-shifting logic based on real-time driving conditions and driver behavior. It includes three main working modes:
Load Mode: When the vehicle is hauling cargo or towing a trailer (detected by increased engine load and torque), the system delays upshifts and maintains lower gears to provide continuous high torque, preventing clutch slippage and gear hunting.
Economic Mode: For daily commuting (low load, steady speed), the system shifts to higher gears early to keep the engine in the optimal economic speed range (1800-2200 rpm), maximizing fuel efficiency.
Hill Mode: When driving uphill/downhill (detected by the vehicle’s inclinometer), the system locks the transmission in a lower gear to enhance climbing power (uphill) or use engine braking to control speed (downhill), improving safety.
1. High-Strength Structural Design for Heavy-Duty Adaptability
The 48000-02315 transmission assembly is engineered with a reinforced casing and core components to withstand high-torque and heavy-load operating conditions, making it ideal for light commercial vehicles (LCVs) and mid-size passenger cars with high payload demands. Its casing is crafted from die-cast aluminum alloy with a ribbed reinforcement structure, enhancing structural rigidity by 30% compared to standard transmission casings. Key internal components—including gears, shafts, and bearings—are made of chrome-nickel-molybdenum alloy steel, 经过 carburizing and quenching treatment to achieve a surface hardness of HRC 60-63 and a core toughness of ≥1300 MPa. This design allows the assembly to handle a maximum input torque of 350 N・m, meeting the power needs of 2.0L-2.5L turbocharged engines commonly used in LCVs (such as pickup trucks and vans) and ensuring no structural deformation or component failure even during long-term heavy-load transportation (e.g., hauling 1.5-2 tons of cargo).
2. Optimized Transmission Efficiency for Fuel and Energy Savings
Targeting the energy-saving needs of both traditional fuel and mild hybrid vehicles, the 48000-02315 assembly integrates a low-friction transmission mechanism and a high-efficiency hydraulic control system. Its gear meshing adopts a modified involute profile with a contact ratio of 1.8 (higher than the industry average of 1.5), reducing friction loss between gear teeth by 25%. The hydraulic control system uses a dual-output variable-displacement oil pump, which adjusts oil supply volume in real time according to working conditions—reducing oil pump power consumption by 18% compared to fixed-displacement pumps. Third-party testing shows that the assembly’s overall transmission efficiency reaches 93% under rated working conditions (2000 rpm, 250 N·m), and vehicles equipped with it achieve a 7%-10% reduction in comprehensive fuel consumption compared to those using ordinary 5-speed manual or 6-speed automatic transmissions of the same level. For mild hybrid models, this efficiency advantage further amplifies the energy-saving effect of the hybrid system.
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