0AW927156K

1. 8AT-Specific Precise Hydraulic Control

As the core of ZF 8AT transmission control, the 0AW927156K TCU adopts a closed-loop hydraulic pressure adaptive algorithm tailored for 8-speed AT’s mechanical structure, achieving millisecond-level control of the transmission’s torque converter and 8 gear sets. It collects real-time signals from 16 high-precision sensors (including torque converter lock-up status, 8 gear position sensors, hybrid motor torque, and hydraulic oil quality sensors) and processes data through a dual-core high-performance MCU (Infineon AURIX TC497, operating frequency up to 300 MHz)—30% higher processing efficiency than the 0BH TCU’s triple-core chip for DSG.

Luxury-Level Shifting Smoothness: In daily driving (throttle opening < 40%), the TCU controls the hydraulic pressure gradient to 0.06 MPa/10 ms. For example, when shifting from 3rd to 4th gear at 50 km/h, the torque converter lock-up clutch engages with a pressure buffer of 0.12 MPa, reducing the jerk amplitude to less than 1.8 m/s²—20% lower than the 0BH TCU’s DSG performance, reaching the smoothness standard of top luxury AT transmissions;

High-Efficiency Power Transmission: For high-speed cruising (120 km/h), the TCU activates the "8th gear early engagement" strategy. It shifts into 8th gear at 105 km/h, keeping the engine speed below 1,800 rpm (vs. 2,200 rpm for 6AT), reducing fuel consumption by 12%-15% compared to traditional 6AT models. Taking the Audi A8L 50 TFSI as an example, its comprehensive fuel consumption is as low as 8.2-8.8 L/100 km;

Torque Converter Intelligent Lock-Up: The TCU optimizes the lock-up logic in 7 gears (excluding 1st gear). At low speeds (35 km/h in 2nd gear), it activates the "slip lock-up" mode (slip rate < 2%), balancing comfort and efficiency; at medium-high speeds (60 km/h in 4th gear), it switches to full lock-up, reducing torque converter power loss by 25%.

2. Luxury-Level Adaptive Shift Logic

The 0AW927156K TCU is equipped with a driving scenario and habit dual-recognition system that classifies driving conditions into 6 types ("urban luxury commute", "highway cruising", "mountain climbing", "sport driving", "eco-saving", "hybrid pure electric") by analyzing 1,500+ sets of real-time data (including steering angle, suspension damping, seat pressure, and driver throttle habits) stored in a high-capacity EEPROM (write cycle of 300,000 times).

Urban Luxury Commute Mode: The TCU advances upshifting (e.g., shifting from 4th to 5th gear at 60 km/h) and reduces the hydraulic pressure change rate by 30%, ensuring no perceptible shifting sensation. For the Audi A6L 45 TFSI, it maintains a stable engine speed range of 1,500-2,000 rpm in urban stop-and-go traffic;

Sport Driving Mode (activated by steering wheel shift paddles): The TCU delays upshifting (e.g., shifting from 5th to 6th gear at 120 km/h) and shortens the downshift response time to 0.22-0.28 seconds. When the driver depresses the accelerator fully at 100 km/h, it completes a 6-4 skip shift in 0.3 seconds, matching the dynamic needs of high-performance models like the Audi S6;

Mountain Climbing Adaptation: Detected by the vehicle’s inclination sensor (slope > 15°), the TCU locks the gear in 3rd-5th range, avoiding frequent shifting. It increases the torque converter lock-up pressure by 0.15 MPa to prevent slip when climbing with a full load (e.g., Audi Q7 with 5 passengers and luggage);

Eco-Saving Mode: The TCU optimizes the shift map to prioritize high gears, activates early torque converter lock-up, and coordinates with the engine’s start-stop system. For the Volkswagen Touareg 3.0T TDI, it reduces comprehensive fuel consumption by 9%-11% compared to normal mode.