Division 8.1.2 Coastdown

The coastdown test on the chassis dynamometer shall be performed with the procedure given in paragraph 8.1.3.4.1. or in paragraph 8.1.3.4.2. of this Sub-Annex and shall start no later than 120 seconds after completion of the warm-up procedure. Consecutive coastdown runs shall be started immediately. At the request of the manufacturer and with approval of the approval authority, the time between the warm-up procedure and coastdowns using the iterative method may be extended to ensure a proper vehicle setting for the coastdown. The manufacturer shall provide the approval authority with evidence for requiring additional time and evidence that the chassis dynamometer load setting parameters (e.g. coolant and/or oil temperature, force on a dynamometer) are not affected.