Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p34
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 34/150)
Character Range: 809719–812948

use these elements in demonstrating conformity of a third or subsequent, engine family unless each of these demonstrations takes place within two years of the first use of the elements in a demonstration of conformity.

           Figure 2
           Previously demonstrated conformity of an OBD engine family

              A.1.2.2. The demonstration of OBD in-use performance shall be performed at the same time and at the same frequency as the in-service conformity demonstration specified in Annex 8.

              A.1.2.3. The manufacturer shall report the initial schedule and the sampling plan for conformity testing to the Type Approval Authority at the time of the initial type approval of a new engine family.

              A.1.2.4. Vehicle types without a communication interface which permits the collection of the necessary in-use performance data as specified in Annex 9C, with missing data or with a non-standard data protocol shall be considered as non-compliant.

              A.1.2.4.1. Individual vehicles with mechanical or electrical faults which prevent the collection of the necessary in-use performance data as specified in Annex 9C shall be excluded from the conformity testing survey and the vehicle type shall not be considered non-compliant unless insufficient vehicles that meet the sampling requirements can be found to permit the survey to be properly conducted.

              A.1.2.5. Engine or vehicle types where the collection of in-use performance data influences the OBD monitoring performance shall be considered as non-compliant.

A.1.3. OBD in-use performance data
              A.1.3.1. The OBD in-use performance data to be considered for assessing the conformity of an OBD engine family shall be those recorded by the OBD system according to paragraph 6. of Annex 9C, and made available according to paragraph 7. of that annex.

A.1.4. Engine or vehicle selection
              A.1.4.1. Engine selection

              A.1.4.1.1. In the case where an OBD engine family is used in several engine families (Figure 2), engines from each of these engine families shall be selected by the manufacturer for demonstrating the in-use performance of that OBD engine family.

              A.1.4.1.2. Any engine of a particular OBD-engine family may be included in the same demonstration even if the monitoring systems with which they are equipped are of different generations or at different modification states.

              A.1.4.2. Vehicle selection

              A.1.4.2.1. Vehicle segments

              A.1.4.2.1.1. For the purpose of classifying the vehicles subject to demonstration, 6 vehicle segments shall be considered:

                  (a) For vehicles of class N: long-haul vehicles, distribution vehicles, and others, such as construction vehicles.

                  (b) For vehicles of class M: coaches and inter-city buses, city buses, and others, such as M1 vehicles.

              A.1.4.2.1.2. Where possible, vehicles shall be selected from each segment in a survey.

              A.1.4.2.1.3. There shall be a minimum of 15 vehicles per segment.

              A.1.4.2.1.4. In the case where an OBD engine-family is used in several engine families (Figure 2),