Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p83
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 83/150)
Character Range: 958747–961849

Annex 9B ‑ Appendix 7 Performance monitoring
A.7.1.   General
A.7.1.1.  This appendix sets out provisions relating to the demonstration process applicable in some cases of performance monitoring.
A.7.2.   Demonstration of performance monitoring
A.7.2.1.  Approval of the failure classification
A.7.2.1.1.  As specified in paragraph 4.2.1.1. of this annex, in the case of performance monitoring no correlation to actual emissions is necessary. However, the approval authority may request test data in order to verify the classification of the malfunction effects as described in paragraph 6.2. of this annex.
A.7.2.2.  Approval of the performance monitoring selected by the manufacturer
A.7.2.2.1.  In arriving at an approval decision on the choice of the performance monitoring selected by the manufacturer, the Type Approval Authority shall consider technical information provided by the manufacturer.
A.7.2.2.2.  The performance threshold selected by the manufacturer for the monitor under consideration shall be determined on the parent engine of the OBD engine family during a qualification test performed as follows:
A.7.2.2.2.1.  The qualification test is performed in the same way as specified in paragraph 6.3.2. of this annex.
A.7.2.2.2.2.  The decrease of performance of the component under consideration is measured and subsequently serves as the performance threshold for the parent engine of the OBD engine family.
A.7.2.2.3.  The performance monitoring criteria approved for the parent engine will be considered to be applicable to all other members of the OBD engine family without further demonstration.
A.7.2.2.4. Upon agreement between the manufacturer and the Type Approval Authority, adaptation of the performance threshold to different members of the OBD engine family in order to cover different design parameters (for example EGR cooler size) shall be possible. Such agreement shall be based on technical elements showing its pertinence.
A.7.2.2.4.1. At the request of the Type Approval Authority, a second member of the OBD engine family may be subject to the approval process described in paragraph A.7.2.2.2.
A.7.2.3.  Qualification of a deteriorated component
A.7.2.3.1.  For the purpose of demonstrating the OBD performance of the selected monitor of an OBD engine family, a deteriorated component shall be qualified on the parent engine of the OBD engine family in accordance with paragraph 6.3.2. of this annex.
A.7.2.3.2. In case of a second engine tested in accordance with paragraph A.7.2.2.4.1., the deteriorated component shall be qualified on that second engine in accordance with paragraph 6.3.2. of this annex.
A.7.2.4.  Demonstration of the OBD performance
A.7.2.4.1.  The demonstration of the OBD performance shall be conducted according to the requirements of paragraph 7.1.2. of this annex using the qualified deteriorated component that is qualified for use with the parent engine.

                   Annex 9B - Appendix 8 Demonstration requirements in case of performance monitoring of a wall-flow diesel particulate filter
A.8.1.  General
A.8.1.1.  This