ISO 19723-2:2018 PDF

Scope: This document specifies performance and general test methods for liquefied natural gas fuel system components intended for use on the types of motor vehicles defined in ISO 3833. This document is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using liquefied gas in accordance with the ISO 15403 series. It is not applicable to the following: original-production and converted vehicles. This document is only applicable on the components in the "LNG system" meaning an assembly of components (tanks, valves, flexible fuel lines, etc.) and connecting parts (fuel lines, fittings, etc.) fitted on motor vehicles using LNG in their propulsion system and related components up to and including the vaporizer. Other parts downstream from the vaporizer are considered as CNG components covered by NOTE All references to pressures, given in megapascals and bar (1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/ mm2) are considered gauge pressures, unless otherwise specified.

ISO 19723-2:2018 Referenced Document

ISO 12617:2015 Road vehicles - Liquefied natural gas (LNG) refuelling connector - 3,1 MPa connector
ISO 12991:2012 Liquefied natural gas (LNG) - Tanks for on-board storage as a fuel for automotive vehicles
ISO 19723-1:2018 Road vehicles - Liquefied natural gas (LNG) fuel systems - Part 1: Safety requirements
ISO 6487:2015 Road vehicles - Measurement techniques in impact tests - Instrumentation
ISO 898-1:2013 Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs with specified property classes - Coarse thread and fine pitch thread

2018 ISO 19723-2:2018 Road vehicles - Liquefied natural gas (LNG) fuel systems - Part 2: Test methods