道路车辆. 压缩天然气(CNG)补充连接器

[中文适用范围]： 本文件规定了完全由新部件和材料构成的压缩天然气（CNG）加气嘴和插座，适用于压缩天然气驱动的道路车辆。CNG加气连接器包括插座及其保护帽（安装在车辆上）和喷嘴。 本文件仅适用于设计工作压力为20 MPa（200 bar）和25 MPa（250 bar）的设备，适用于使用符合ISO 15403-1和ISO 15403-2的CNG并具有标准化配合组件的设备，以及防止天然气车辆被加气站以高于车辆燃料系统工作压力的压力加气的连接器，同时允许以小于或等于车辆燃料系统工作压力的压力加气。 本文件涉及20 MPa和25 MPa的工作压力，适用于： — 尺寸1：B200和B250； — 尺寸2：C200和C250。 注：所有以兆帕和巴为单位的压力参考值均为表压，除非另有说明。 [外文原描述]： ISO 14469:2017 specifies CNG refuelling nozzles and receptacles constructed entirely of new and unused parts and materials, for road vehicles powered by compressed natural gas. A CNG refuelling connector consists of, as applicable, the receptacle and its protective cap (mounted on the vehicle) and the nozzle. ISO 14469:2017 is applicable only to such devices designed for a service pressure of 20 MPa (200 bar) and 25 MPa (250 bar), to those using CNG according to ISO 15403‑1 and ISO 15403‑2 and having standardized mating components, and to connectors that prevent natural gas vehicles from being fuelled by dispensers with service pressures higher than that of the vehicle, while allowing them to be fuelled by dispensers with service pressures less than or equal to the vehicle fuel system service pressure. ISO 14469:2017 refers to service pressures of 20 MPa and 25 MPa for: - size 1: B200 and B250; - size 2: C200 and C250.