道路车辆 - 液化石油气（LPG）燃油系统部件第9部分:减压装置（PRD）

[中文适用范围]： 本文件规定了液化石油气燃料部件的一般要求和定义，适用于 ISO 3833 中定义的机动车辆类型。 它还提供了一般设计原则，并规定了说明和标记的要求。 本文件适用于按照 ISO 9162 使用气体燃料的车辆（单燃料、双燃料或双燃料应用）。 它不适用于以下各项： a) 燃料容器； b) 固定式燃气发动机； c) 容器安装硬件； d) 电子燃油管理； e) 加油容器。 注 1：公认的是，可以检查本文中未具体提及的各种组件是否符合 ISO 20766 任何适用部分的标准，包括测试适当的功能测试。 注 2：除非另有说明，本文件中所有提及的压力均视为表压。 注 3：本文件适用于工作压力在 110 kPa（20 °C 时富丁烷）和 840 kPa（20 °C 时丙烷）范围内的设备，下文将提及本文件。 通过适当的系数（比率）调整压力可以适应其他工作压力。 [外文原描述]： This document specifies general requirements and definitions of liquefied petroleum gas fuel components, intended for use on the types of motor vehicles as defined in ISO 3833. It also provides general design principles, and specifies requirements for instructions and marking. This document is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using gaseous fuels in accordance with ISO 9162. It is not applicable to the following: a) fuel containers; b) stationary gas engines; c) container mounting hardware; d) electronic fuel management; and e) refuelling receptacles. NOTE 1 It is recognized that miscellaneous components not specifically addressed herein can be examined for compliance with the criteria of any applicable part of ISO 20766, including testing to the appropriate functional tests. NOTE 2 All references to pressure in this document are considered gauge pressures unless otherwise specified. NOTE 3 This document applies to devices which have a service pressure in the range of 110 kPa (Butane rich at 20 °C) and 840 kPa (Propane at 20 °C), hereinafter referred to in this document. Other service pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio).