Document ID: chunk:federal_register_of_legislation:F2023C00229:reg:10:p18
Version: federal_register_of_legislation:F2023C00229
Segment Type: reg
Provision Reference: reg 10 (pt 18/30)
Character Range: 569829–572905

Torque and/or power
Full load demand and speed feedback < 95 % speed reference                                                                            Speed and/or power
No load, not an idle point, and torque feedback > torque reference                                                                    Torque and/or power
No load, speed feedback ≤ idle speed + 50 min–1 and torque feedback = manufacturer defined/measured idle torque ± 2 % of max. torque  Speed and/or power
No load, speed feedback > idle speed + 50 min–1 and torque feedback > 105 % torque reference                                          Torque and/or power
No load and speed feedback > 105 % speed reference                                                                                    Speed and/or power'

       (ii)    The following section 4 is inserted:

        '4.  CALCULATION OF THE EXHAUST GAS FLOW

        4.1.  Determination of the diluted exhaust gas flow

              The total diluted exhaust gas flow over the cycle (kg/test) shall be calculated from the measurement values over the cycle and the corresponding calibration data of the flow measurement device (V0 for PDP, KV for CFV, Cd for SSV), as determined in section 2 of Appendix 5 to Annex III). The following formulae shall be applied, if the temperature of the diluted exhaust is kept constant over the cycle by using a heat exchanger (± 6 K for a PDP-CVS, ± 11 K for a CFV-CVS or ± 11 K for a SSV-CVS), see section 2.3 of Annex V).

         For the PDP-CVS system:

         where:

         V0 = volume of gas pumped per revolution under test conditions, m3/rev

         NP = total revolutions of pump per test

         pb = atmospheric pressure in the test cell, kPa

         p1 = pressure depression below atmospheric at pump inlet, kPa

         T = average temperature of the diluted exhaust gas at pump inlet over the cycle, K

         For the CFV-CVS system:

         where:

         t = cycle time, s

         Kv = calibration coefficient of the critical flow venturi for standard conditions,

         Pp = absolute pressure at venturi inlet, kPa

         T = absolute temperature at venturi inlet, K

         For the SSV-CVS system

         where:

         with:

A0 = collection of constants and units conversions

                      = 0,006111 in SI units of
d  = diameter of the SSV throat, m
Cd = discharge coefficient of the SSV
pp  = absolute pressure at venturi inlet, kPa
T  = temperature at the venturi inlet, K
rp  = ratio of the SSV throat to inlet absolute, static pressure =
rD  = ratio of the SSV throat diameter, d, to the inlet pipe inner diameter =

              If a system with flow compensation is used (i.e. without heat exchanger), the instantaneous mass emissions shall be calculated and integrated over the cycle. In this case, the instantaneous mass of the diluted exhaust gas shall be calculated as follows.

         For the PDP-CVS system:

         where:

         NP,i = total revolutions of pump per time interval

         For the CFV-CVS system: