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Brand: C.OEFT
OE numbers: 025CHC15000BK
Product Name: Transmission Assembly
Compatible model: 025CHC
Product status: NEW
Product weight：85.785KG
Packaging size: 100*100*100cm
Product packaging: Neutral Packaging
Car Series: Chinese
Car Type: For Chery
1. Core Function: Power Transmission and Torque Conversion
As the core component of the vehicle powertrain, the 025CHC15000BK transmission assembly undertakes the critical task of transmitting power from the engine (or hybrid system) to the drive wheels while adjusting torque and speed according to driving demands. For automatic transmission versions, the assembly uses a 6-speed planetary gear set to achieve precise torque conversion—for example, when a light truck equipped with this assembly starts with a full load, the 1st gear can amplify the engine’s torque by 4.2 times, ensuring sufficient starting power to climb slopes with a gradient of up to 25%. The hydraulic torque converter of the assembly acts as a "power buffer," softening the impact of the engine’s power output during startup and gear shifting, and protecting the powertrain from damage caused by sudden torque changes. During high-speed cruising (e.g., 120 km/h on the highway), the torque converter’s lock-up clutch engages fully, converting the flexible connection into a rigid connection and reducing power loss caused by fluid slip—improving fuel efficiency and reducing engine noise.
2. Adaptive Gear Shifting for Diverse Working Scenarios
The 025CHC15000BK assembly is equipped with an intelligent adaptive control system that adjusts the gear-shifting strategy in real time based on driving conditions and driver behavior. It includes three main working modes to meet different usage needs:
Heavy-Load Mode: When the system detects a high engine load (such as when the vehicle is hauling cargo or towing a trailer), it delays upshifts and maintains lower gears to provide continuous high torque, preventing clutch slippage and ensuring stable power output during uphill climbing or heavy-load acceleration.
Economic Mode: For daily commuting or light-load driving, the system shifts to higher gears early to keep the engine operating in the optimal economic speed range (1800-2300 rpm), minimizing fuel consumption. In this mode, the assembly can achieve a fuel consumption reduction of 8-10% during urban stop-and-go traffic compared to the standard mode.
Sport Mode: When the driver requires high performance (such as overtaking or driving on mountain roads), the system increases the engine speed threshold for upshifting, keeping the engine in the high-torque output range (3000-4500 rpm) to ensure rapid acceleration response. The shift time between gears is shortened to 0.25 seconds, enhancing the vehicle’s dynamic performance.
1. Reinforced Structural Design for Heavy-Duty Torque Bearing
The 025CHC15000BK transmission assembly is engineered with a high-strength integrated casing and enhanced internal components, specifically designed to withstand high-torque operating conditions. Its casing is made of die-cast aluminum alloy with a ribbed reinforcement structure, which improves structural rigidity by 35% compared to standard transmission casings of the same class. Key internal components such as the main shaft, countershaft, and planetary gear set are crafted from chrome-nickel-molybdenum alloy steel (40CrNiMoA), which undergoes a strict carburizing and quenching process—achieving a surface hardness of HRC 59-62 and a core toughness of ≥1350 MPa. This robust design enables the assembly to handle a
maximum input torque of 480 N·m, making it ideal for mid-size commercial vehicles (such as light trucks and vans) and high-performance passenger cars equipped with 2.0L-3.0L turbocharged engines. Even under long-term heavy-load operations (e.g., continuous cargo transportation with a payload of 3-5 tons), the assembly maintains stable performance without structural deformation or component fatigue failure.
2. High-Efficiency Transmission System for Energy Saving
Targeting the energy-saving needs of modern vehicles, the 025CHC15000BK assembly integrates a series of efficiency-optimizing technologies. Its gear meshing adopts a modified involute tooth profile with a contact ratio of 1.9, which reduces friction loss between gear teeth by 28% compared to traditional gear profiles. The hydraulic control system is equipped with a variable-displacement oil pump that adjusts the oil supply volume in real time according to the transmission’s working conditions—reducing the power consumption of the oil pump by 22% when the transmission is in a low-load state (such as idle or high-speed cruising). Additionally, the assembly’s torque converter features a flexible lock-up clutch that engages early (as low as 3rd gear), eliminating torque converter slip and improving transmission efficiency by 9-12% during medium to high-speed driving. Third-party test data shows that the overall transmission efficiency of the 025CHC15000BK reaches 94% under rated working conditions (2500 rpm, 350 N·m), and vehicles equipped with this assembly achieve a 8-11% reduction in comprehensive fuel consumption compared to those using conventional 5-speed automatic transmissions.
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