标准编号：ISO 14469-2:2007
中文名称：道路车辆 压缩天然气（CNG）补给燃料接头 第2部分：20MPa（200巴）接头（尺寸2）
英文名称：Road vehicles — Compressed natural gas (CNG) refuelling connector — Part 2: 20 MPa (200 bar) connector, size 2
发布日期：2007-12
标准范围
This part of ISO 14469 applies to compressed natural gas (CNG) vehicle nozzles and receptacles,constructed entirely of new, unused parts and materials for which there is a demand, in particular for largeCNG urban buses of refuelling times equivalent to those of urban buses driven by conventional dieselengines. The proposed connector, size 2, offers a larger cross section than the connector in accordance withISO 14469-1 and, therefore, permits refuelling of the vehicles within significantly shorter time periods. Studieshave shown that the proposed connector, size 2, offers more than twice the mass flow of the connectorsspecified in ISO 14469-1. CNG fuelling connection nozzles consist of the following components, as applicable:-- receptacle and protective cap (mounted on vehicle) (see Clause 7);-- nozzle (see Clause 5).This part of ISO 14469 applies only to devices which have a service pressure of 20 MPa [referred to as C200receptacle, see 9.2 c)].This part of ISO 14469 applies to devices with standardized mating components (see 5.8 and 7.7).This part of ISO 14469 applies to connectors that-- prevent natural gas vehicles from being fuelled by dispenser stations with service pressures higher thanthe vehicle, and-- allow natural gas vehicles to be fuelled by dispenser stations with service pressures equal to or lowerthan the vehicle fuel system service pressure.This part of ISO 14469 is applicable to compressed natural gas in accordance with ISO 15403.All references to pressures throughout this part of ISO 14469 are considered to be gauge pressures unlessotherwise specified. The selection of the appropriate standardized connector is agreed between the vehiclemanufacturer and the customer.
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