Document ID: chunk:federal_register_of_legislation:F2008C00323:reg:20:p19
Version: federal_register_of_legislation:F2008C00323
Segment Type: reg
Provision Reference: reg 20 (pt 19/23)
Character Range: 198282–201129

540             510

540 < RW  595             570

595 < RW  650             625

650 < RW  710             680

710 < RW  765             740

765 < RW  850             800

850 < RW  965             910

965 < RW  1080            1020

1080 < RW  1190           1130

1190 < RW  1305           1250

1305 < RW  1420           1360

1420 < RW  1530           1470

1530 < RW  1640           1590

1640 < RW  1760           1700

1760 < RW  1870           1810

1870 < RW  1980           1930

1980 < RW  2100           2040

2100 < RW  2210           2150

2210 < RW  2380           2270

2380 < RW  2610           2270

2610 < RW                  2270

           If the corresponding equivalent inertia is not available on the dynamometer, the larger value closest to the vehicle reference mass will be used.

5.2. Setting of dynamometer

           The load shall be adjusted according to methods described in paragraph 4.1.5. above.

           The method used and the values obtained (equivalent inertia - characteristic adjustment parameter) shall be recorded in the test report.

           5.3.  Conditioning of vehicle

           5.3.1. For compression-ignition engined vehicles for the purpose of measuring particulates, at most 36 hours and at least 6 hours before testing, the Part Two cycle described in Appendix 1 to this Annex shall be used. Three consecutive cycles shall be driven. The dynamometer setting shall be indicated in paragraphs 5.1. and 5.2. above.

           At the request of the manufacturer, vehicles fitted with positive-ignition engines may be preconditioned with one Part One and two Part Two driving cycles.

           After this preconditioning, specific for compression-ignition engines, and before testing, compression-ignition and positive-ignition engined vehicles shall be kept in a room in which the temperature remains relatively constant between 293 and 303 K (20 and 30 C). This conditioning shall be carried out for at least six hours and continue until the engine oil temperature and coolant, if any, are within  2 K of the temperature of the room.

           5.3.1.1. If the manufacturer so requests, the test shall be carried out not later than 30 hours after the vehicle has been run at its normal temperature.

           5.3.1.2. For positive-ignition engined vehicles fuelled with LPG or NG or so equipped that they can be fuelled with either petrol or LPG or NG, between the tests on the first gaseous reference fuel and the second gaseous reference fuel, the vehicle shall be preconditioned before the test on the second reference fuel.  This preconditioning is done on the second reference fuel by driving a preconditioning cycle consisting of one Part One (urban part) and two times Part Two (extra-urban part) of the test cycle described in Appendix 1 to this