Division 3.2.1.2 F1

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. The series of digits will be constituted of two digits identifying the dual-fuel engine type as defined in Article 2, followed by the letter or letters specified in point 3.2.1.1 corresponding to the natural gas/biomethane composition used by the engine. The two digits identifying the dual- fuel engine types as defined in Article 2 are the following:

1. (a)

   1A for dual-fuel engines of Type 1A;

2. (b)

   1B for dual-fuel engines of Type 1B;

3. (c)

   2A for dual-fuel engines of Type 2A;

4. (d)

   2B for dual-fuel engines of Type 2B;

5. (e)

   3B for dual-fuel engines of Type 3B;