IS 15711 : 2006 Road Vehicles - Compressed Natural Gas (CNG) Fuel System Components - Performance and General Test Methods

1 Scope

1.1 This standard specifies performance and general test methods for CNG onboard Iiel system components,intended for use on motor vehicles defined in IS 14272 (Part 1), two wheelers and construction equipmentvehicles (CEV).

1.1.1 This standard is applicable to CNG fuel system components intended to use on vehicles usingcompressed natural gas in accordance with IS 15320 (mono-fuel or bi-fuel applications). It is not applicableto the following:

a) Liquefied Natural Gas (LNG) fuel system components located upstream of, and including, the vaporizer;

b) Fuel containers;

c) Stationary gas engines; and

d) CNG fuel systems components for the propulsion of marine craft.

1.1.2 This standard is based upon a service pressure for compressed natural gas as a fiel at 20 MPa (200 bar)settled at 15�C. Other service pressures could be accommodated by adjusting the pressure by theappropriate factor (ratio). For example, a 25 MPa (250 bar) service pressure system will require pressuresto be multiplied by 1.25. All references to pressure are to be considered gauge pressures unless otherwisespecitied.

2 References

The following standards contain provisions, which through reference in this text, constitute provisions ofthis standard. At the time of publication the editions indicated were valid. All standards are subject to revisionand parties to agreements based on this standard are encouraged to investigate the possibility of applying themost recent editions of the standards indicated below.