Division 3.2.1.1

F1In case of a natural gas/biomethane engine one of the following markings to be placed after the F2GB type-approval mark:

1. (a)

   H in case of the engine being approved and calibrated for the H-range of gases;

2. (b)

   L in case of the engine being approved and calibrated for the L-range of gases;

3. (c)

   HL in case of the engine being approved and calibrated for both the H-range and L-range of gases;

4. (d)

   H _t in case of the engine being approved and calibrated for a specific gas composition in the H-range of gases and transformable to another specific gas in the H-range of gases by fine tuning of the engine fuelling;

5. (e)

   L _t in case of the engine being approved and calibrated for a specific gas composition in the L-range of gases and transformable to another specific gas in the L-range of gases after fine tuning of the engine fuelling;

6. (f)

   HL _t in the case of the engine being approved and calibrated for a specific gas composition in either the H-range or the L- range of gases and transformable to another specific gas in either the H-range or the L-range of gases by fine tuning of the engine fuelling;

7. (g)

   CNG _fr in all other cases where the engine is fuelled with CNG/biomethane and designed for operation on one restricted gas fuel range composition;

8. (h)

   LNG _fr in the cases where the engine is fuelled with LNG and designed for operation on one restricted gas fuel range composition;

9. (i)

   LPG _fr in the cases where the engine is fuelled with LPG and designed for operation on one restricted gas fuel range composition;

10. (j)

    LNG ₂₀ in case of the engine being approved and calibrated for a specific LNG composition resulting in a λ-shift factor not differing by more than 3 per cent the λ-shift factor of the G ₂₀ gas specified in Annex IX, and the ethane content of which does not exceed 1,5 per cent;

11. (k)

    LNG in case of the engine being approved and calibrated for any other LNG composition;