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ISO FDIS 12614-2 2014 Edition, February 11, 2014 ROAD VEHICLES - LIQUEFIED NATURAL GAS (LNG) FUEL SYSTEM COMPONENTS - PART 2: PERFORMANCE AND GENERAL TEST METHODS
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Description / Abstract:
This part of ISO 12614 specifies general requirements and
definitions of liquefied natural gas fuel system components,
intended for use on the types of motor vehicles as defined in ISO
3833. This part of ISO 12614 is also applicable to other LNG-fueled
motor vehicles (for example ships) as far as appropriate, until any
specific norm would be worked out for such a type of vehicle. It
also provides general design principles, and specifies requirements
for instructions and marking.
This part of ISO 12614 is not applicable to the following:
a) fuel containers;
b) stationary gas engines;
c) container mounting hardware;
d) electronic fuel management;
e) refueling receptacles.
NOTE 1 It is recognized that miscellaneous components not
specifically covered herein can be examined to meet the criteria of
this part of ISO 12614 and tested according to the appropriate
functional tests.
NOTE 2 All references to pressure in this part of ISO 12614 are
to be considered gauge pressures unless otherwise specified.
NOTE 3 This part of ISO 12614 is based upon a working pressure
for natural gas as 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.