Document ID: chunk:federal_register_of_legislation:F2024C00356:reg:21:p1
Version: federal_register_of_legislation:F2024C00356
Segment Type: reg
Provision Reference: reg 21 (pt 1/35)
Character Range: 288127–293212

21            Idle                             13     0                    0             20                20          400                                              PM 1

 1 PM = gearbox in neutral, clutch engaged. K1, K5 = first or second gear engaged, clutch disengaged
 2 Additional gears can be used according to manufacturer recommendations if the vehicle is equipped with a transmission with
 more than five gears.

Table 3
Simulated inertia and dyno loading requirements
Reference mass of vehicle RW (kg)  Equivalent inertia  Power and load absorbed by the dynamometer at 80 km/h  Road Load Coefficients
                                   kg                  kW                                                     N                       a (N)  b(N/kph)
RW ≤ 480                           455                 3.8                                                    171                     3.8    0.0261
480 < RW ≤ 540                     510                 4.1                                                    185                     4.2    0.0282
540 < RW ≤ 595                     570                 4.3                                                    194                     4.4    0.0296
595 < RW ≤ 650                     625                 4.5                                                    203                     4.6    0.0309
650 < RW ≤ 710                     680                 4.7                                                    212                     4.8    0.0323
710 < RW ≤ 765                     740                 4.9                                                    221                     5.0    0.0337
765 < RW ≤ 850                     800                 5.1                                                    230                     5.2    0.0351
850 < RW ≤ 965                     910                 5.6                                                    252                     5.7    0.0385
965 < RW ≤ 1080                    1020                6.0                                                    270                     6.1    0.0412
1080 < RW ≤ 1190                   1130                6.3                                                    284                     6.4    0.0433
1190 < RW ≤ 1305                   1250                6.7                                                    302                     6.8    0.0460
1305 < RW ≤ 1420                   1360                7.0                                                    315                     7.1    0.0481
1420 < RW ≤ 1530                   1470                7.3                                                    329                     7.4    0.0502
1530 < RW ≤ 1640                   1590                7.5                                                    338                     7.6    0.0515
1640 < RW ≤ 1760                   1700                7.8                                                    351                     7.9    0.0536
1760 < RW ≤ 1870                   1810                8.1                                                    365                     8.2    0.0557
1870 < RW ≤ 1980                   1930                8.4                                                    378                     8.5    0.0577
1980 < RW ≤ 2100                   2040                8.6                                                    387                     8.7    0.0591
2100 < RW ≤ 2210                   2150                8.8                                                    396                     8.9    0.0605
2210 < RW ≤ 2380                   2270                9.0                                                    405                     9.1    0.0619
2380 < RW ≤ 2610                   2270                9.4                                                    423                     9.5    0.0646
2610 < RW                          2270                9.8                                                    441                     9.9    0.0674

Figure 1
Operating cycle for the Type I test

Figure 2
Elementary urban cycle for the Type I test

Figure 3
Extra-urban cycle (Part Two) for the Type I test

Annex 4a -Appendix 1
  Chassis dynamometer system
              1. Specification
              1.1.  General Requirements
1.1.1.  The dynamometer shall be capable of simulating road load within one    of the following classifications:
  (a) Dynamometer with fixed load curve, i.e. a dynamometer whose    physical characteristics provide a fixed load curve shape;
                (b) Dynamometer with adjustable load curve, i.e. a dynamometer with at   least two road load parameters that can be adjusted to shape the load                             curve.

       1.1.2.  Dynamometers with electric inertia simulation shall be demonstrated to be equivalent to mechanical inertia systems. The means by which               equivalence is established are described in Appendix 6 to this annex.

       1.1.3.  In the event that the total resistance to progress on the road cannot be  reproduced