Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p112
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 112/150)
Character Range: 1035421–1038869

system activation.
       Table 1
       Illustration of the content of the demonstration process in accordance with the provisions in paragraphs A.1.3., A.1.4. and A.1.5.
                                                               Demonstration elements
Warning system activation specified in paragraph A.1.3.        (a) 4 activation tests (incl. lack of reagent)
                                                               (b) Supplementary demonstration elements, as appropriate
Low-level inducement activation specified in paragraph A.1.4.  (a) 2 activation tests (incl. lack of reagent)
                                                               (b) Supplementary demonstration elements
                                                               (c ) 1 torque reduction test
Severe inducement activation specified in paragraph A.1.5.     (a) 2 activation tests (incl. lack of reagent)
                                                               (b) Supplementary demonstration elements, as appropriate
                                                               (c) Demonstration elements of correct vehicle behavior during inducement

A.1.2.  Engine families or OBD engine families
The compliance of an engine family or an OBD engine family with the requirements of this annex may be demonstrated by testing one of the members of the family under consideration, provided that the manufacturer demonstrates to the Type Approval Authority that the monitoring systems necessary for complying with the requirements of this annex are similar within the family.
A.1.2.1. This demonstration may be performed by presenting to the approval authorities such elements as algorithms, functional analyses, etc.
A.1.2.2. The test engine is selected by the manufacturer in agreement with the Type Approval Authority. It may or may not be the parent engine of the considered family.
A.1.2.3. In the case where engines of an engine family belong to an OBD engine family that has already been type-approved, the compliance of that engine family is deemed to be demonstrated without further testing (Figure 1), provided the manufacturer demonstrates to the authority that the monitoring systems necessary for complying with the requirements of this annex are similar within the engine and OBD engine families under consideration.
           Figure 1
           Previously demonstrated conformity of an OBD engine family
A.1.3.  Demonstration of the warning system activation
A.1.3.1. The compliance of the warning system activation shall be demonstrated by performing one test for each of the failure categories considered in paragraphs 6. to 9. of this annex such as: lack of reagent, low reagent quality, low reagent consumption, failure of components of the monitoring system.
A.1.3.2. Selection of the failures to be tested
A.1.3.2.1. For the purpose of demonstrating the activation of the warning system in case of a wrong reagent quality, a reagent shall be selected with a concentration of the active ingredient equal to or higher than the minimum acceptable reagent concentration CDmin, communicated by the manufacturer in accordance with the requirements of paragraph 7.1.1. of this annex.
A.1.3.2.2. For the purpose of demonstrating the activation of the warning system in the case of an incorrect rate of reagent consumption, it shall be sufficient to arrange an interruption of the dosing activity.
A.1.3.2.2.1. Where activation