T/CAMRA 003.1-2018 Active

Scope: This standard specifies the basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage for front external lighting and optical signal devices of automobiles. This standard applies to the production, sales, inspection, and market supervision of front external lighting and optical signal devices for M and N-class automobiles. Main technical content: 4. Explanation of the standard content 4.1 The standard format is written in accordance with the requirements of GB/T 1.1-2009. 4.2 The definitions of various parameters are based on the relevant provisions in GB4599, GB21259, GB25991, GB5920, GB17509, and GB23255, and also refer to the definitions in the current mainstream automobile manufacturers' enterprise standards. 4.3 The requirements and test methods for electromagnetic compatibility mainly refer to the relevant provisions of national and international standards GB/T 18655, GB/T 21437.2, ISO 11452-2, and ISO 11452-4. 4.4 The requirements and methods for mechanical environmental testing mainly follow the relevant provisions of ISO 16750.3, GB/T 10485, and GB/T 30038. 5. Explanation of the sources of main parameters and test methods 6.2.2 High-temperature load test There are many complaints about car lights on the Qiche.com platform, among which complaints about deformation and cracking account for a large proportion, as shown in the following figure: Figure omitted When the car lights are turned on, the internal heat accumulates a lot, while the outer surface of the light guide is directly exposed to the atmospheric environment, with a very low temperature. There is a temperature difference between the inner and outer surfaces of the light guide, and there is thermal stress. If no corresponding measures are taken, it will lead to deformation and cracking of the car lights. Such tests cannot be simulated by ordinary high-temperature tests or temperature cycling tests. Joint-venture brand car manu