Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p97
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 97/108)
Character Range: 1163237–1166647

164
E85                   l/MJ                 0.102              0.108
gCO2/MJ               169                  179
Compression ignition  Diesel (B0)          l/MJ               0.0611  0.0611
gCO2/MJ               161                  161
Diesel (B7)           l/MJ                 0.0611             0.0611
gCO2/MJ               161                  161

Annex B6 - Appendix 3

Calculation of gas energy ratio for gaseous fuels (LPG and NG/biomethane)
              1. Measurement of the mass of gaseous fuel consumed during the Type 1 test cycle

              Measurement of the mass of gas consumed during the cycle shall be done by a fuel weighing system capable of measuring the weight of the storage container during the test in accordance with the following:

                  (a) An accuracy of ±2 per cent of the difference between the readings at the beginning and at the end of the test or better.

                  (b) Precautions shall be taken to avoid measurement errors.

                  Such precautions shall at least include the careful installation of the device according to the instrument manufacturer's recommendations and to good engineering practice.

                  (c) Other measurement methods are permitted if an equivalent accuracy can be demonstrated.

              2. Calculation of the gas energy ratio

              The fuel consumption value shall be calculated from the emissions of hydrocarbons, carbon monoxide, and carbon dioxide determined from the measurement results assuming that only the gaseous fuel is burned during the test.

              The gas ratio of the energy consumed in the cycle shall be determined using the following equation:

              where:

                     Ggas is the gas energy ratio, per cent;

                     Mgas is the mass of the gaseous fuel consumed during the cycle, kg;

                     FCnorm is the fuel consumption (l/100km for LPG, m3/100 km for NG/biomethane) calculated in accordance with paragraphs 6.6. and 6.7. of Annex B7;

                     dist is the distance recorded during the cycle, km;

                     ρ is the gas density:

               ρ = 0.654 kg/m3 for NG/Biomethane;

              ρ = 0.538 kg/litre for LPG;

                     cf is the correction factor, assuming the following values:

              cf = 1 in the case of LPG or G20 reference fuel;

              cf = 0.78 in the case of G25 reference fuel.

Annex B6a

Ambient Temperature Correction Test for the determination of CO2 emissions under representative regional temperature conditions
              This annex is only applicable for Level 1A;

              1. Introduction

              This annex describes the supplemental Ambient Temperature Correction Test (ATCT) procedure to determine the CO2 emissions under representative regional temperature conditions.

              1.1. The CO2 emissions of ICE vehicles, NOVC-HEVs and the charge-sustaining value of OVC-HEVs shall be corrected in accordance with the requirements of this annex. No correction is required for the CO2 value of the charge-depleting test. No correction is required for an Electric Range.

              1.2. In order to ensure statistical representativity, at the request of the manufacturer, all tests from which results are used in the calculations described in this Annex B6A can be repeated up to a maximum of