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Brand: C.OEFT
OE numbers: 02E927770AQ
Product Name: Transmission control unit
Compatible model:
Product status: Remanufactured
Product weight: 1.7447KG
Packaging size: 63X41X36cm
Product packaging: Neutral Packaging
Car Series: for Volkswagen Audi
Car Type: Germany
As the intelligent core of automatic transmissions, the Transmission Control Unit (TCU) has its product functions systematically divided into the following technical modules:
1. Shift Logic Control
① Dynamic Gear Decision-Making
·Analyzes parameters such as vehicle speed, engine speed, and throttle opening in real time, and selects the optimal shift timing according to preset algorithms (e.g., early upshifting in economy mode / delayed downshifting in sport mode).
· Supports multi-mode switching (economy/sport/snow, etc.) and adapts to different driving needs by adjusting shift curves.
② Actuator Coordination
·Controls solenoid valves to switch hydraulic oil circuits and drives clutches/brakes to complete gear changes, with a response speed of 10-50ms.
·Coordinates the actions of two sets of clutches in dual-clutch transmissions to achieve power-shift without interruption.
2 .Powertrain Optimization
① Improvement of Transmission Efficiency
· Reduces energy loss through torque converter lock-up control, increasing transmission efficiency by 5-8%.
·The adaptive learning function optimizes shift strategies according to driving habits (e.g., extending gear holding time during aggressive driving).
② Torque Coordination Management
· Links with the ECU to adjust engine ignition timing and reduce shift shock.
· Coordinates the output of the motor and transmission in hybrid models.
3. System Monitoring and Protection
① Fault Diagnosis
·Monitors parameters such as oil pressure and oil temperature in real time. When abnormalities occur, it stores DTC codes and triggers a fault light alarm.
·Supports Limp Home mode, which limits gears to ensure emergency driving of the vehicle.
② Communication Integration
·Shares data with systems such as ECU and ESP through the CAN bus to realize the coordination of the vehicle's powertrain.
4. Special Function Expansion
·Parking Logic: Automatically activates P-gear locking when the vehicle speed is below 2km/h.
·New Energy Adaptation: Integrates motor control algorithms in pure electric vehicles.
As the intelligent control core of automatic transmissions, the Transmission Control Unit (TCU) boasts product advantages mainly reflected in the following technical dimensions:
1.Driving Performance Optimization
① Shift Smoothness
· Intelligently determines shift timing by real-time analysis of parameters such as vehicle speed and throttle opening, reducing shift shock and improving driving comfort.
·The adaptive learning function can dynamically adjust shift logic according to driving habits (e.g., early upshifting in economy mode, delayed downshifting in sport mode).
② Power Response Efficiency
·Collaborates with the Engine Control Unit (ECU) to optimize torque output and shift timing, increasing acceleration response speed by 15%-20%.。
·Coordinates power distribution between the motor and transmission in hybrid models to achieve seamless switching.
2. Energy Efficiency and Economy
① Fuel Economy
·Intelligent shifting strategies keep the engine in the efficient operating range, reducing comprehensive fuel consumption by 3%-8%.
·Lock-up control of the torque converter reduces energy loss, with a maximum transmission efficiency of 92.5%.
② Maintenance Cost Control
·The fault self-diagnosis function can early warn of transmission abnormalities, reducing maintenance costs.
The modular design extends the service life of key components (e.g., the valve body has a service life of up to 400,000 kilometers).
3.System Reliability and Expandability
① Multiple Protection Mechanisms
·Monitors parameters such as oil pressure and oil temperature in real time, and triggers Limp Home mode to ensure emergency driving when abnormalities occur.
·The electromagnetic compatibility design ensures stable operation in harsh environments such as high temperatures and vibrations.
② Intelligent Upgrade Capability
· Supports OTA remote updates of shift logic to adapt to new driving scenarios.
· Collaborates with the ADAS system and can be extended to autonomous driving powertrain control in the future.
4. Potential for Technical Iteration
·Electrification Adaptation: Integrates motor control algorithms to support multi-speed DHT hybrid systems.
· Computing Power Enhancement: The new-generation TCU adopts multi-core processors, with computing power increased by 3 times to support complex algorithms.
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