Document ID: chunk:federal_register_of_legislation:F2023L00129:front:0:p32
Version: federal_register_of_legislation:F2023L00129
Segment Type: other
Provision Reference: 
Character Range: 87674–90615

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;

                  (f) HLt 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 fueling;

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

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

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

                  (j) LNG20 in case of the engine being approved and calibrated for a specific liquefied natural gas/liquefied biomethane composition resulting in a λ-shift factor not differing by more than 3 per cent the λ-shift factor of the G20 gas specified in Annex 5 to this Regulation, and the ethane content of which does not exceed 1.5 per cent;

                  (k) LNG in case of the engine being approved and calibrated for any other liquefied natural gas/liquefied biomethane composition.

              4.12.3.3.7. For dual-fuel engines the approval mark shall contain a series of digits after the national symbol, the purpose of which is to distinguish for which dual-fuel engine type and with which range of gases the approval has been granted.

              This series of digits will be constituted of two digits identifying the dual-fuel engine type as defined in Annex 15 followed by the letter(s) specified in paragraphs 4.12.3.3.1. to 4.12.3.3.6. corresponding to the natural gas/biomethane composition used by the engine.

              The two digits identifying the dual-fuel engines types according to the definitions of Annex 15 are the following:

                  (a) 1A for dual-fuel engines of Type 1A;

                  (b) 1B for dual-fuel engines of Type 1B;

                  (c) 2A for dual-fuel engines of Type 2A;

                  (d) 2B for dual-fuel engines of Type 2B;

                  (e) 3B for dual-fuel engines of Type 3B."

4.12.3.4. In addition to the marking on the engine, the approval mark may also be retrievable via the instrument cluster. It shall then be readily available for inspection and the access instructions included in the user manual of the vehicle.
4.12.4. If the vehicle or engine conforms to an approved type under one or more other Regulations annexed to the Agreement, in the country which has granted approval under this Regulation, the symbol prescribed in paragraph 4.12.3.1. does not need to be repeated. In such a case, the Regulation