ISO 12614:2023

Description

This document specifies tests and requirements for the flexible fuel lines, a liquefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833. This document is not applicable to the following:

a)       fuel containers;

b)       stationary gas engines;

c)        container mounting hardware;

d)       electronic fuel management;

e)       refuelling receptacles.

NOTE 1        It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this document and tested according 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 is based upon a working pressure for natural gas as a fuel of 1,6¬†MPa (16¬†bar). (1¬†bar¬†=¬†0,1¬†MPa¬†=¬†105¬†Pa;¬†1¬†MPa¬†=¬†1¬†N/mm².) Other working pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, a 2¬†MPa (20¬†bar) working pressure system will require pressures to be multiplied by 1,25.