[ANNEX IIIA U.K. VERIFYING REAL DRIVING EMISSIONS
Appendix 7
Selection of vehicles for PEMS testing at initial type approval U.K.
4. VALIDATION OF A PEMS TEST FAMILY U.K.
4.1. General requirements for validating a PEMS test family U.K.
4.1.1. The vehicle manufacturer presents a representative vehicle of the PEMS test family to the type-approval authority. The vehicle shall be subject to a PEMS test carried out by a Technical Service to demonstrate compliance of the representative vehicle with the requirements of this Annex. U.K.
4.1.2. The authority responsible for issuing the emission type-approval in accordance with Regulation (EC) No 715/2007 selects additional vehicles according to the requirements of point 4.2 of this Appendix for PEMS testing carried out by a Technical Service to demonstrate compliance of the selected vehicles with the requirements of this Annex. The technical criteria for selection of an additional vehicle according to point 4.2 of this Appendix shall be recorded with the test results. U.K.
[4.1.3. With agreement of the type-approval authority, a PEMS test can also be driven by a different operator witnessed by a Technical Service, provided that at least the tests of the vehicles required by points 4.2.2 and 4.2.6 of this Appendix] and in total at least 50 % of the PEMS tests required by this Appendix for validating the PEMS test family are driven by a Technical Service. In such case the Technical Service remains responsible for the proper execution of all PEMS tests pursuant to the requirements of this Annex. U.K.
4.1.4. A PEMS test results of a specific vehicle may be used for validating different PEMS test families according to the requirements of this Appendix under the following conditions: U.K.
the vehicles included in all PEMS test families to be validated are approved by a single authority according to the requirements of Regulation (EC) 715/2007 and this authority agrees to the use of the specific vehicle's PEMS test results for validating different PEMS test families,
each PEMS test family to be validated includes a vehicle emission type, which comprises the specific vehicle;
For each validation the applicable responsibilities are considered to be borne by the manufacturer of the vehicles in the respective family, regardless of whether this manufacturer was involved in the PEMS test of the specific vehicle emission type.
4.2. Selection of vehicles for PEMS testing when validating a PEMS test family U.K.
By selecting vehicles from a PEMS test family it should be ensured that the following technical characteristics relevant for pollutant emissions are covered by a PEMS test. One vehicle selected for testing can be representative for different technical characteristics. For the validation of a PEMS test family vehicles shall be selected for PEMS testing as follows:
4.2.1. For each combination of fuels (e.g. petrol-LPG, petrol-NG, petrol only), on which some vehicle of the PEMS test family can operate, at least one vehicle that can operate on this combination of fuels shall be selected for PEMS testing. U.K.
4.2.2. The manufacturer shall specify a value PMR H (= highest power-to-mass-ratio of all vehicles in the PEMS test family) and a value PMR L (= lowest power-to-mass-ratio of all vehicles in the PEMS test family). Here the ‘power-to-mass-ratio’ corresponds to the ratio of the maximum net power of the internal combustion engine as indicated in point 3.2.1.8 of Appendix 3 to Annex I of this Regulation and of the reference mass as defined in Article 3(3) of Regulation (EC) No 715/2007. At least one vehicle configuration representative for the specified PMR H and one vehicle configuration representative for the specified PMR L of a PEMS test family shall be selected for testing. If the power-to-mass ratio of a vehicle deviates by not more than 5 % from the specified value for PMR H , or PMR L , the vehicle should be considered as representative for this value. U.K.
4.2.3. At least one vehicle for each transmission type (e.g. manual, automatic, DCT) installed in vehicles of the PEMS test family shall be selected for testing. U.K.
4.2.4. At least one four-wheel drive vehicle (4 × 4 vehicle) shall be selected for testing if such vehicles are part of the PEMS test family. U.K.
4.2.5. For each engine volume occurring on a vehicle in the PEMS family at least one representative vehicle shall be tested. U.K.
4.2.6. At least one vehicle for each number of installed exhaust after-treatment components shall be selected for testing. U.K.
4.2.7. Notwithstanding the provisions in points 4.2.1 to 4.2.6, at least the following number of vehicle emission types of a given PEMS test family shall be selected for testing: U.K.
| |
| Number N of vehicle emission types in a PEMS test family | Minimum number NT of vehicle emission types selected for PEMS testing |
|---|
| 1 | 1 |
| from 2 to 4 | 2 |
| from 5 to 7 | 3 |
| from 8 to 10 | 4 |
| from 11 to 49 | NT = 3 + 0,1 × N |
| more than 49 | NT = 0,15 × N |