Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:1714:p1
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 1714 (pt 1/15)
Character Range: 691353–694498

1714       127.4          1763       82.6

              7. Cycle identification
               In order to confirm if the correct cycle version was chosen or if the correct cycle was implemented into the test bench operation system, checksums of the vehicle speed values for cycle phases and the whole cycle are listed in Table A1/13.
    Table A1/13
Checksums for the Extra High phase in this table are only applicable for Level 1A;
       1Hz checksums
Cycle class  Cycle phase  Checksum of 1 Hz target vehicle speeds
Class 1      Low          11988.4
Medium       17162.8
Low          11988.4
Total        41139.6
Class 2      Low          11162.2
Medium       17054.3
High         24450.6
Extra High   28869.8
Total        81536.9
Class 3a     Low          11140.3
Medium       16995.7
High         25646.0
Extra High   29714.9
Total        83496.9
Class 3b     Low          11140.3
Medium       17121.2
High         25782.2
Extra High   29714.9
Total        83758.6

              8. Cycle modification
               This paragraph shall not apply to OVC-HEVs, NOVC-HEVs and NOVC-FCHVs.
              However, at the request of the manufacturer and with approval of the responsible authority, the downscaling procedure described in paragraph 8.2. of this annex may be applied for a NOVC-HEV using the maximum rated engine power as the maximum vehicle power rating on the applicable WLTP test cycle where the electric machine does not impact the maximum vehicle power.
              In the case that the voltage of the traction REESS of a NOVC-HEV is less than 60V, the manufacturer shall supply technical evidence to the responsible authority that the electric machine does not impact the maximum vehicle power on the applicable WLTP test cycle .
              In the case that the voltage of the traction REESS of a NOVC-HEV is equal to or greater than 60V, the manufacturer shall demonstrate to the responsible authority that the electric machine does not impact the maximum vehicle power on the applicable WLTP test cycle . Examples of such demonstration could include: torque/power profiles delivered from the engine and electric machine; electric machine operating envelopes; power curves; or other appropriate information to demonstrate the power delivery.
              8.1. General remarks
              Driveability problems may occur for vehicles with power to mass ratios close to the borderlines between Class 1 and Class 2 vehicles, or between Class 2 and Class 3 vehicles, or for very low powered vehicles in Class 1.
              Since these problems are related mainly to cycle phases with a combination of high vehicle speed and high accelerations rather than to the maximum speed of the cycle, the downscaling procedure shall be applied to improve driveability.
              8.2. This paragraph describes the method to modify the cycle profile using the downscaling procedure. The modified vehicle speed values calculated according to paragraphs 8.2.1. to 8.2.3. shall be rounded according to paragraph 6.1.8. of this Regulation to 1 place of decimal in a final step.
              8.2.1. Downscaling procedure for