Document ID: chunk:federal_register_of_legislation:F2024C00356:reg:20:p13
Version: federal_register_of_legislation:F2024C00356
Segment Type: reg
Provision Reference: reg 20 (pt 13/19)
Character Range: 259944–263043

LPG or NG/biomethane is used as a fuel it is permissible that the engine is started on petrol and switched to LPG or NG/biomethane after a predetermined period of time which cannot be changed by the driver.
              6.4.2. Idling
              6.4.2.1. Manual-shift or semi-automatic gearbox, see Tables 1 and 2.
              6.4.2.2. Automatic-shift gearbox
               After initial engagement the selector shall not be operated at any time during the test except in the case specified in paragraph 6.4.3.3. below or if the selector can actuate the overdrive, if any.
              6.4.3. Accelerations
              6.4.3.1. Accelerations shall be so performed that the rate of acceleration is as constant as possible throughout the operation.
              6.4.3.2. If an acceleration cannot be carried out in the prescribed time, the extra time required shall be deducted from the time allowed for changing gear, if possible, but otherwise from the subsequent steady-speed period.
              6.4.3.3. Automatic-shift gearboxes
               If acceleration cannot be carried out in the prescribed time, the gear selector shall operate in accordance with requirements for manual-shift gearboxes.
              6.4.4. Decelerations
              6.4.4.1. All decelerations of the elementary urban cycle (Part One) shall be effected by removing the foot completely from the accelerator with the clutch remaining engaged. The clutch shall be disengaged, without use of the gear lever, at the higher of the following speeds: 10 km/h or the speed corresponding to the engine idle speed.
               All decelerations of the extra-urban cycle (Part Two) shall be effected by removing the foot completely from the accelerator, the clutch remaining engaged. The clutch shall be disengaged, without use of the gear lever, at a speed of 50 km/h for the last deceleration.
              6.4.4.2. If the period of deceleration is longer than that prescribed for the corresponding phase, the vehicle's brakes shall be used to enable compliance with the timing of the cycle.
              6.4.4.3. If the period of deceleration is shorter than that prescribed for the corresponding phase, the timing of the theoretical cycle shall be restored by constant speed or an idling period merging into the following operation.
              6.4.4.4. At the end of the deceleration period (halt of the vehicle on the rollers) of the elementary urban cycle (Part One), the gears shall be placed in neutral and the clutch engaged.
              6.4.5. Steady speeds
              6.4.5.1. "Pumping" or the closing of the throttle shall be avoided when passing from acceleration to the following steady speed.
              6.4.5.2. Periods of constant speed shall be achieved by keeping the accelerator position fixed.
              6.4.6. Sampling
               Sampling shall begin (BS) before or at the initiation of the engine start up procedure and end on conclusion of the final idling period in the extra-urban cycle (Part Two, end of sampling (ES)) or, in the case of test Type VI, on conclusion