Document ID: chunk:federal_register_of_legislation:F2023C00229:reg:9:p9
Version: federal_register_of_legislation:F2023C00229
Segment Type: reg
Provision Reference: reg 9 (pt 9/22)
Character Range: 161151–164843

P(a) + P(b)
(1) ESC test
(2) ESC test only

         (1) Specify the tolerance; to be within ± 3 % of the values declared by the manufacturer.

             8.3.                         Dynamometer settings (kW)

             The dynamometer settings for the ESC and ELR tests and for the reference cycle of the ETC test shall be based upon the net engine power P(n) of Section 8.2. It is recommended to install the engine on the test bed in the net condition. In this case, P(m) and P(n) are identical. If it is impossible or inappropriate to operate the engine under net conditions, the dynamometer settings shall be corrected to net conditions using the above formula.

             8.3.1.                     E S C a n d E L R tests

             The dynamometer settings shall be calculated according to the formula  in  Annex III, Appendix 1,  Section 1.2.

                                Engine speed
   Percent load
   Idle             Speed A                      Speed B     Speed C
     10          —
     25          —
     50          —
     75          —
    100

             8.3.2.                     E T C test

             If the engine is not tested under net conditions, the correction formula for converting the measured power or measured cycle work, as determined according to Annex III, Appendix 2, Section 2, to net power or net cycle work shall be submitted by the engine manufacturer for the whole operating area of the cycle, and approved by the Technical Service.

Appendix 2

        ESSENTIAL CHARACTERISTICS OF THE ENGINE FAMILY

               1. Common parameters

       1.1. Combustion cycle: ..... ......... .......... ......... .......... ......... .......... ......... .......... ......... ........

       1.2. Cooling medium: ...... ......... .......... ......... .......... ......... .......... ......... .......... ......... ........

       1.3. Number of cylinders (1): ........ .......... ......... .......... ......... .......... ......... .......... ......... ........

       1.4. Individual cylinder displacement:  ........ ......... .......... ......... .......... ......... .......... ......... ........

       1.5. Method of air aspiration: ....... .......... ......... .......... ......... .......... ......... .......... ......... ........

       1.6. Combustion chamber type/design: ...... ......... .......... ......... .......... ......... .......... ......... ........

       1.7. Valve and porting — configuration, size and number: .... ......... .......... ......... .......... ......... ........

       1.8. Fuel system: ... .......... ......... .......... ......... .......... ......... .......... ......... .......... ......... ........

       1.9. Ignition system (gas engines): .. .......... ......... .......... ......... .......... ......... .......... ......... ........

       1.10. Miscellaneous features:

             — charge cooling system (1): . .......... ......... .......... ......... .......... ......... .......... ......... ........

             — exhaust gas recirculation (1): ........ ......... .......... ......... .......... ......... .......... ......... ........

             — water injection/emulsion (1): ........ ......... .......... ......... .......... ......... .......... ......... ........

             — air injection (1): ... ......... .......... ......... .......... ......... .......... ......... .......... ......... ........

       1.11. Exhaust aftertreatment (1):  ..... .......... ......... .......... ......... .......... ......... .......... ......... ........

             Proof of identical (or lowest for the parent engine) ratio:  system capacity/fuel delivery