Document ID: chunk:federal_register_of_legislation:F2023C00229:reg:4:p29
Version: federal_register_of_legislation:F2023C00229
Segment Type: reg
Provision Reference: reg 4 (pt 29/42)
Character Range: 82677–85679

database.  If necessary the exchange of parts that are directly related to the amount of fuel flow (such as injector nozzles) is allowed.

4.2.2.2.                    At the manufacturer's request the engine may be tested on the reference fuels GR and G23, or on the reference fuels G25 and G23, in which case the type-approval is only valid for the H-range or the L-range of gases respectively.

4.2.2.3.                    On delivery to the customer the engine shall bear a label (see paragraph 5.1.5) stating for which fuel composition the engine has been calibrated.
4.3.                            Exhaust emissions approval of a member of a family

4.3.1.                        With the exception of the case mentioned in paragraph 4.3.2, the approval of a parent engine shall be extended to all family members without further testing, for any fuel composition within the range for which the parent engine has been approved (in the case of engines described in paragraph 4.2.2) or the same range of fuels (in the case of engines described in either paragraphs 4.1 or 4.2) for which the parent engine has been approved.

4.3.2.                        Secondary test engine

              In case of an application for type-approval of an engine, or a vehicle in respect of its engine, that engine belonging to an engine family, if the technical service determines that, with regard to the selected parent engine the submitted application does not fully represent the engine family defined in Annex I, Appendix 1, an alternative and if necessary an additional reference test engine may be selected by the technical service and tested.

4.4.                            Type-approval certificate

              A certificate conforming to the model specified in Annex VI shall be issued for approval referred to under Sections 3.1, 3.2 and 3.3.

5.                                 ENGINE MARKINGS

5.1.                            The engine approved as a technical unit must bear:

5.1.1.                        the trademark or trade name of the manufacturer of the engine;

5.1.2.                        the manufacturer's commercial description;

5.1.3.                        the EC type-approval number preceded by the distinctive letter(s) or number(s) of the country granting EC type-approval (1);

5.1.4.                        in case of an NG engine one of the following markings to be placed after the EC type approval number:

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

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

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

         (1)     1 = Germany, 2 = France, 3 = Italy, 4 = Netherlands, 5 = Sweden, 6 = Belgium, 7 = Hungary, 8 = Czech Republic, 9 = Spain, 11 = United Kingdom, 12 = Austria, 13 = Luxembourg, 17 = Finland, 18 = Denmark, 20 = Poland, 21