T/CQCNG 1-2019 Adding a dedicated compressor system for compressed natural gas (CNG) to gasoline vehicles in terms of technical requirements

Scope

Scope: This standard specifies the technical requirements for the entire vehicle before installing dedicated natural gas vehicle devices on existing gasoline vehicles, the technical requirements for installation, the technical requirements for the entire vehicle after installation, inspection methods, markings, technical documents accompanying the vehicle, and the quality assurance period. This standard applies to existing gasoline vehicles that are fitted with compressed natural gas (CNG) dedicated devices with a nominal working pressure of no more than 20 MPa; Main technical content: 6.1 The dedicated natural gas vehicle devices shall comply with the provisions of GB 7258 Article 12.6, and the performance of the entire vehicle shall comply with the provisions of GB 7258 Articles 4.3, 4.4, and 4.6. 6.2 After installation, the emission indicators of the entire vehicle shall not be lower than the emission level before installation, and shall comply with the national GB 18285 or local emission standards for in-use vehicles. 6.3 It shall be ensured that the load distribution of the vehicle in unloaded and loaded states complies with the provisions of GB 7258 Article 4.3.2. 6.4 After installing dedicated natural gas vehicle devices, the increase in the vehicle's mass shall not exceed 6.0% of the original vehicle's curb mass. 6.5 The engine power shall comply with the provisions of GB 7258 Article 5.1. 6.6 When the engine burns CNG with a specification of 12T as specified in GB 18047, the mileage driven by 1 cubic meter of CNG shall be equivalent to that of 1 liter of gasoline. 6.7 After installing compressed natural gas dedicated devices, there shall be no leakage or gas escape in the gas system.

Development Information

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