Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p81
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 81/108)
Character Range: 1116813–1119969

of mode of operation during the test shall not be permitted unless otherwise specified.
              2.6.4.1.1. If the initiation of the powertrain start procedure is not successful, e.g. the engine does not start as anticipated or the vehicle displays a start error, the test is void, preconditioning tests shall be repeated and a new test shall be driven.
              2.6.4.1.2. In the cases where LPG or NG/biomethane is used as a fuel, it is permissible that the engine is started on petrol and switched automatically to LPG or NG/biomethane after a predetermined period of time that cannot be changed by the driver. This period of time shall not exceed 60 seconds.
              It is also permissible to use petrol only or simultaneously with gas when operating in gas mode provided that the energy consumption of gas is higher than 80 per cent of the total amount of energy consumed during the Type 1 test. This percentage shall be calculated in accordance with the method set out in Appendix 3 to this annex.
              2.6.4.2. The cycle starts on initiation of the powertrain start procedure.
              2.6.4.3. For preconditioning, the applicable WLTC shall be driven.
              At the request of the manufacturer or the responsible authority, additional WLTCs may be performed in order to bring the vehicle and its control systems to a stabilized condition.
              The extent of such additional preconditioning shall be included in all relevant test reports.
              2.6.4.4. Accelerations
              The vehicle shall be operated with the necessary accelerator control movement to accurately follow the speed trace.
              The vehicle shall be operated smoothly following representative shift speeds and procedures.
              For manual transmissions, the accelerator control shall be released during each shift and the shift shall be accomplished in minimum time.
              If the vehicle cannot follow the speed trace, it shall be operated at maximum available power until the vehicle speed reaches the respective target speed again.
              2.6.4.5. Deceleration
              During decelerations, the driver shall deactivate the accelerator control but shall not manually disengage the clutch until the point specified in paragraphs 3.3. or 4.(f) of Annex B2.
              If the vehicle decelerates faster than prescribed by the speed trace, the accelerator control shall be operated such that the vehicle accurately follows the speed trace.
              If the vehicle decelerates too slowly to follow the intended deceleration, the brakes shall be applied such that it is possible to accurately follow the speed trace.
              2.6.4.6. Brake application
              During stationary/idling vehicle phases, the brakes shall be applied with appropriate force to prevent the drive wheels from turning.
              2.6.5. Use of the transmission
              2.6.5.1. Manual shift transmissions
              2.6.5.1.1. The gear shift prescriptions specified in Annex B2 shall be followed. Vehicles tested according to Annex B8 shall be driven according to paragraph 1.5. of