Document ID: chunk:federal_register_of_legislation:F2023L00129:front:0:p42
Version: federal_register_of_legislation:F2023L00129
Segment Type: other
Provision Reference: 
Character Range: 115590–118597

(i) The pollutant emissions shall be measured both on the newly manufactured engine and before the maximum of 125 hours set in paragraph 8.3.3.1. on the first engine tested;

                     (ii) The evolution coefficient of the emissions between the two tests shall be calculated for each pollutant:

              Emissions on second test/Emissions first test;

              The evolution coefficient may have a value less than one.

              The subsequent test engines shall not be subjected to the running-in procedure, but their emissions when newly manufactured shall be modified by the evolution coefficient.

              In this case, the values to be taken shall be the following:

              (a) For the first engine, the values from the second test;

                  (b) For the other engines, the values when newly manufactured multiplied by the evolution coefficient.

              8.3.3.3. For diesel, ethanol (ED95), petrol, E85, LNG20, LNG and LPG fuelled, including dual-fuel, engines, all these tests may be conducted with the applicable market fuels. However, at the manufacturer's request, the reference fuels described in Annex 5 to this Regulation may be used. This implies tests, as described in paragraph 4. of this Regulation.

              8.3.3.4. For CNG engines, including dual-fuel engines, all these tests may be conducted with market fuel in the following way:

                  (a) For H marked engines with a market fuel within the H-range (0.89 ≤ Sλ ≤ 1.00);

                  (b) For L marked engines with a market fuel within the L-range
                  (1.00 ≤ Sλ ≤ 1.19);

                  (c) For HL marked engines with a market fuel within the extreme range of the λ-shift factor (0.89 ≤ Sλ ≤ 1.19).

              However, at the manufacturer's request, the reference fuels described in Annex 5 may be used. This implies tests as described paragraph 4.

              8.3.3.5. Non-compliance of gas and dual-fuel engines

              In the case of dispute caused by the non-compliance of gas fuelled engines, including dual-fuel engines, when using a market fuel, the tests shall be performed with each reference fuel on which the parent engine has been tested, and, at the request of the manufacturer, with the possible additional third fuel, as referred to in paragraphs 4.6.4.1. and 4.7.1.2. of this Regulation, on which the parent engine may have been tested.

              When applicable, the result shall be converted by a calculation, applying the relevant factors "r", "ra" or "rb" as described in paragraphs 4.6.5., 4.6.6.1. and 4.7.1.3. of this Regulation. If r, ra or rb are less than 1, no correction shall take place.

              The measured results and, when applicable, the calculated results shall demonstrate that the engine meets the limit values with all relevant fuels (for example fuels 1, 2 and, if applicable, the third fuel in the case of natural gas engines, and fuels A and B in the case of LPG engines).