Thermal gap requirements: The gap between the heat-sensitive parts and the heat source system is required to be greater than 40 mm; The heat shield should preferably be placed on the heat source, not on the heat-sensitive parts.  Basis for evaluating pipeline risks: Whether there is relative motion, static or dynamic clearance; Whether the distance between the two fixed points of the long pipeline (hose and hard pipe) is reasonable; Whether it is a vibrating part; Whether it is related to sharp Edge clearance; Whether there is a clearance with the heat source;  What is the tension state of the pipeline;  Whether the environmental factors around the pipeline are particularly bad. Pre-virtual design review stage. This stage mainly simulates the vehicle through UG and CAE software, analyzes the dynamic and static characteristics of the vehicle pipeline system under various working conditions, such as clearance, motion, stress, fatigue, durability, etc., conducts virtual review, and finds the best design state. For models on the same platform, the LL (Lessons Learned) experience in the early design and development can be learned from each other. The quality review stage of the actual vehicle pipeline. Starting from the trial production of the prototype, it has officially entered the stage of quality evaluation of the actual vehicle pipeline.