Document ID: chunk:federal_register_of_legislation:F2024L00447:front:0:p15
Version: federal_register_of_legislation:F2024L00447
Segment Type: other
Provision Reference: 
Character Range: 43485–46752

of a manufacturer with similar emission characteristics. Vehicle emission types may be included in a PEMS test family only as long as the vehicles within a PEMS test family are identical with respect to the characteristics in all the administrative and technical criteria listed below.

              6.3.1.1. Administrative criteria

                  (a) The approval authority issuing the emission type approval in accordance with this Regulation ("authority")

                  (b) The manufacturer having received the emission type approval in accordance with this Regulation ("manufacturer").

              6.3.1.2. Technical criteria

              (a) Propulsion type (e.g. ICE, NOVC-HEV, OVC-HEV)

                  (b) Type(s) of fuel(s) (e.g. petrol, diesel, LPG, NG, …). Bi- or flex-fuelled vehicles may be grouped with other vehicles, with which they have one of the fuels in common.

              (c) Combustion process (e.g. two stroke, four stroke)

              (d) Number of cylinders

                  (e) Configuration of the cylinder block (e.g. in-line, V, radial, horizontally opposed, …)

                  (f) Engine volume

                   The vehicle manufacturer shall specify a value V_eng_max (= maximum engine volume of all vehicles within the PEMS test family). The engine volumes of vehicles in the PEMS test family shall not deviate more than – 22 per cent from V_eng_max if V_eng_max ≥ 1500 ccm and – 32 per cent from V_eng_max if V_eng_max < 1500 ccm.

                  (g) Method of engine fuelling (e.g. indirect or direct or combined injection)

                  (h) Type of cooling system (e.g. air, water, oil)

                  (i) Method of aspiration such as naturally aspirated, pressure charged, type of pressure charger (e.g. externally driven, single or multiple turbo, variable geometries …)

                  (j) Types and sequence of exhaust after-treatment components (e.g. three-way catalyst, oxidation catalyst, lean NOX trap, SCR, lean NOX catalyst, particulate trap)

                  (k) Exhaust gas recirculation (with or without, internal/external, cooled/non-cooled, low/high pressure)

              6.3.2. Alternative PEMS test family definition

              As an alternative to the provisions of paragraph 6.3.1. the vehicle manufacturer may define a PEMS test family that is identical to a single vehicle emission type or a single WLTP IP-family. In this case, only one vehicle has to be tested from the family in either a hot or a cold test, at the choice of the authority and there is no need to validate the PEMS test family as in paragraph 6.4.

              6.4. Validation of a PEMS test family

              6.4.1. General requirements for validating a PEMS test family

              6.4.1.1. The vehicle manufacturer shall present a representative vehicle of the PEMS test family to the authority. The vehicle shall be subject to a PEMS test carried out by a Technical Service to demonstrate compliance of the representative vehicle with the requirements of this Regulation.

              6.4.1.2. The authority shall select additional vehicles according to the requirements of paragraph 6.4.3. for PEMS testing carried out by a Technical Service to demonstrate compliance of