Document ID: chunk:federal_register_of_legislation:F2024L00443:reg:3:p1
Version: federal_register_of_legislation:F2024L00443
Segment Type: reg
Provision Reference: reg 3 (pt 1/14)
Character Range: 85681–89685

3                                Auxiliary Emission Strategies

3.0                              Presentation of the AESs                            Hierarchical relations among AES: description and justification (e.g. safety, reliability, etc.)

3.x                              AES x                                               3.x.1 AES justification

                                                                                     3.x.2 measured and/or modelled parameters for AES characterization

                                                                                     3.x.3 Action mode of AES - Parameters used

                                                                                     3.x.4 Effect of AES on pollutants and CO2

3.y                              AES y                                               3.y.1

                                                                                     3.y.2

                                                                                     etc.

       100 page limit ends here

Annex                                                                                List of types covered by this BES-AES: including TA reference, software reference, calibration number, checksums of each version and of each CU (engine and/or after-treatment if any)

Attached documents                                                                   Technical note for AES justification n° xxx                                                                                                                                                      Risk assessment or justification by testing or example of sudden damage, if any

                                 Technical note for AES justification n° yyy
                                 Test report for specific AES impact quantification  Test report of all specific tests done for AES justification, test conditions details, description of the vehicle, date of the tests, emission and/or CO2 impact with or without AES activation

Annex 1 – Appendix 3b

Methodology for the assessment of AES
              The assessment of the AES by the type approval authority shall include at least the following verifications:
           1. The increase of emissions induced by the AES shall be kept at the lowest possible level:
              (a) The increase of total emissions when using an AES shall be kept at the lowest possible level throughout the normal use and life of the vehicles;
              (b) Whenever a technology or design that would allow for improved emission control is available on the market at the time of the AES preliminary assessment it shall be used with no unjustified modulation
           2. When used to justify an AES, the risk of sudden and irreparable damage to the 'propulsion energy converter and the drivetrain', as defined in Mutual Resolution No. 2 (M.R.2) of the 1958 and 1998 Agreements of UNECE containing Vehicle Propulsion System Definitions[16], shall be appropriately demonstrated and documented, including the following information:
              (a) Proof of catastrophic (i.e. sudden and irreparable) engine damage shall be provided by the manufacturer, along with a risk assessment which includes an evaluation of the likelihood of the risk occurring and severity of the possible consequences, including results of tests carried out to this effect;
              (b) When a technology or design is available on the market at the time of the AES application that eliminates or reduces that risk, it shall be used to the largest extent technically possible (i.e. with no unjustified modulation);
              (c) Durability and the long-term protection of the engine or components of the emission control system from wear and malfunctioning shall not be considered an acceptable reason to grant an exemption from the defeat device prohibition.
           3. An adequate technical description shall document why it is necessary to use an