Li Auto Pioneers EMB Chassis Tech

Enhanced Key Takeaways

• •Li Auto's EMB system utilizes a proprietary high-torque density motor design that achieves a clamping force response time of under 90ms, significantly faster than the industry standard for EHB systems.
• •The 'small brain' architecture leverages a centralized domain controller that utilizes a real-time operating system (RTOS) to manage the sub-millisecond latency requirements of the steer-by-wire and brake-by-wire actuators.
• •Li Auto has established a dedicated 'Chassis Intelligence' lab in Beijing to focus on the fusion of sensor data (LiDAR/Camera) with chassis actuators to enable predictive suspension damping based on road surface scanning.

Competitor Analysis

Technical Deep Dive

• •EMB Actuator: Employs a dual-redundant motor architecture to ensure fail-safe operation in the absence of hydraulic backup.
• •Steer-by-Wire: Features a variable steering ratio system that adjusts based on vehicle speed and driving mode, utilizing a high-bandwidth CAN-FD bus for communication.
• •800V Active Suspension: Utilizes high-speed electromagnetic actuators capable of adjusting damping force at a frequency of up to 100Hz to counteract body roll and pitch.
• •Compute Integration: The M100 chip utilizes a heterogeneous computing architecture, dedicating specific NPU cores to chassis dynamics modeling and predictive control algorithms.

Future ImplicationsAI analysis grounded in cited sources

Timeline