This standard specifies the general requirements, test items, applicability, equipment, samples, test conditions, test methods and result judgment etc. of the durability test in the environment of motor vehicle, exterior lighting of trailers and light signal device. Wherein, the test items include the thermal cyclic tests of headlamps and front foglights, thermal cyclic tests for general purposes, thermal shock tests, heat distortion tests, salt spray tests, dust tests, random vibration tests, waterproof tests, light distribution specula strength tests and tests for lubricant, fuel oil and cleaning fluid resistance and light source irradiation tests.
This standard is applicable to motor vehicles of category M, N and O, exterior lighting of trailers and light signal device (except retroreflectors).
2 Normative References
Provisions of the following documents, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these labels are applied or not. For undated references, the latest edition of the normative document is applicable.
GB 4599 Motor Vehicle Headlamps Equipped with Filament Lamps
GB 4660 Motor Vehicle Front Fog Lamps Equipped With Filament Lamps
GB 4785 Prescription for Installation of The External Lighting and Light-signaling Devices for Motor Vehicles and Their Trailers
GB 5920 Photometric Characteristics of Front and Rear Position Lamps End-outline Marker Lamps and Stop Lamps for Motor Vehicles and Their Trailers
GB 11554 Photometric Characteristics of Rear Fog Lamp for Power-driven Vehicles and Their Trailers
GB 15235 Photometric Characteristics of Reversing Lamps for Power-driven Vehicles
GB 17509 Photometric Characteristics of Direction Indicators for Motor Vehicles and Their Trailers
GB 18099 Photometric Characteristics of Side-marker Lamps for Motor Vehicles and Their Trailers
GB 18408 Photometric Characteristics of Devices for the Illumination of Rear Registration Plates of Motor Vehicles and Their Trailers
GB 18409 Photometric Characteristics of Parking Lamps for Power-driven Vehicles
GB 21259 Headlamps Equipped with Gas-discharge Light Sources for Motor Vehicle
3 Terms and Definitions
The terms and definitions specified in the above normative references are applicable to this standard.
4 General Requirements
4.1 New sample shall be employed in each test, and the same sample may be employed in different tests according to the requirements of test items.
4.2 As for the devices designed for 12V and 24V systems, except the light distribution properties, the devices at the nominal voltage of optical source as 24V shall be adopted in all tests. Light distribution properties shall be inspected according to the requirements of relevant standards.
