Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p101
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 101/108)
Character Range: 1174386–1177303

1 test was done on a 4WD dynamometer.

              3.5. Preconditioning

              At the request of the manufacturer preconditioning may be undertaken at Treg.

              The engine temperature shall be within ± 2 °C of the set point of 23 °C or Treg, whichever temperature is chosen for the preconditioning.

              3.5.1. Pure ICE vehicles shall be preconditioned as described in paragraph 2.6. of Annex B6.

              3.5.2. NOVC-HEVs shall be preconditioned as described in paragraph 3.3.1.1. of Annex B8.

              3.5.3. OVC-HEVs shall be preconditioned as described in paragraph 2.1.1. or 2.1.2. of Appendix 4 to Annex B8.

              3.6. Soak procedure

              3.6.1. After preconditioning and before testing, vehicles shall be kept in a soak area with the ambient conditions described in paragraph 3.2.2. of this Annex B6a.

              3.6.2.  From the end of the preconditioning until the soaking at Treg, the vehicle shall not be exposed to a different temperature than Treg for longer than 10 minutes.

              3.6.3. The vehicle shall then be kept in the soak area such that the time from the end of the preconditioning test to the beginning of the ATCT test is equal to tsoak_ATCT with a tolerance of an additional 15 minutes. At the request of the manufacturer, and upon approval of the approval authority, tsoak_ATCT can be extended by up to 120 minutes. In this case, the extended time shall be used for the cool down specified in paragraph 3.9. of this Annex B6a.

              3.6.4. The soak shall be performed without using a cooling fan and with all body parts positioned as intended under normal parking operation. The time between the end of the preconditioning and the start of the ATCT test shall be recorded.

              3.6.5. The transfer from the soak area to the test cell shall be undertaken as quickly as possible. The vehicle shall not be exposed to a temperature different from Treg for longer than 10 minutes.

              3.7. ATCT Test

              3.7.1. The test cycle shall be the applicable WLTC specified in Annex B1 for that class of vehicle.

              3.7.2. The procedures for undertaking the emissions test as specified in Annex B6 for pure ICE vehicles and in Annex B8 for NOVC-HEVs and for the charge-sustaining Type 1 test of OVC-HEVs shall be followed, with the exception that the ambient conditions for the test cell shall be those as described in paragraph 3.2.1. of this Annex B6a.

              3.7.3. In particular, the tailpipe emissions defined by Table A7/1 Step no.2 for pure ICE vehicles and Table A8/5 Step no.2 for HEVs at an ATCT test shall not exceed the emission limits applicable to the vehicle tested defined in paragraph 6.3.10. of this Regulation.

              3.8. Calculation and Documentation

              3.8.1. The family correction factor, FCF, shall be calculated as follows: