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ANNEX IIU.K. CONFORMITY OF IN-SERVICE ENGINES OR VEHICLES

4.TEST CONDITIONSU.K.

[F14.1. Vehicle payload U.K.

Normal payload is a payload between 10 and 100 % of the maximum payload.

The maximum payload is the difference between technically permissible maximum laden mass of the vehicle and the mass of the vehicle in running order as specified in accordance to Annex I to Directive 2007/46/EC.

For the purpose of in-service conformity testing, the payload may be reproduced and an artificial load may be used.

Approval authorities may request to test the vehicle with any payload between 10 and 100 % of the maximum vehicle payload. In case the mass of the PEMS equipment needed for operation exceeds 10 % of the maximum vehicle payload this mass may be considered as minimum payload.

Vehicles of category N 3 shall be tested, when applicable, with a semi-trailer.]

Textual Amendments

4.2. Ambient conditions U.K.

The test shall be conducted under ambient conditions meeting the following conditions:

Atmospheric pressure greater than or equal to 82,5 kPa,

Temperature greater than or equal to 266 K (– 7 °C) and less than or equal to the temperature determined by the following equation at the specified atmospheric pressure:

T = – 0,4514 × (101,3 – pb) + 311

where:

4.3. Engine coolant temperature U.K.

The engine coolant temperature shall be in accordance with point 2.6.1 of Appendix 1.

4.4.The lubricating oil, fuel and reagent shall be within the specifications issued by the manufacturer.U.K.

[F14.4.1. The test lubricating oil shall be market oil and must comply with the specifications of the engine manufacturer. U.K.

Oil samples shall be taken.

[F24.4.2. Fuel U.K.

The test fuel shall be market fuel covered by Directive 98/70/EC and the relevant CEN standards, or reference fuel as specified in Annex IX to this Regulation.]

4.4.2.1. If the manufacturer has, in accordance with Section 1 of Annex I to this Regulation, declared the capability to meet the requirements of this Regulation on market fuels declared in point 3.2.2.2.1 of the Information Document as set out in Appendix 4 to Annex I to this Regulation, at least one test shall be conducted on each of the declared market fuels. U.K.
[F34.4.2.2. Fuel samples shall be taken.] U.K.

Textual Amendments

Textual Amendments

4.4.3. For exhaust after-treatment systems that use a reagent to reduce emissions, the reagent shall be market reagent and must comply with the specifications of the engine manufacturer. A sample of the reagent shall be taken. The reagent shall not be frozen. U.K.

4.5. Trip requirements U.K.

The shares of operation shall be expressed as a percentage of the total trip duration.

The trip shall consist of urban driving followed by rural and motorway driving according to the shares specified in points 4.5.1 to 4.5.4. Where another testing order is justified for practical reasons and after the agreement of the approval authority another order may be used, however, the test shall always start with the urban driving.

For the purpose of this Section, ‘ approximately ’ shall mean the target value ± 5 %.

Urban, rural and motorway parts can be determined either on the basis of:

In case the trip composition is determined on the basis of geographical coordinates, the vehicle should not exceed, for a cumulative period longer than 5 % of the total duration of each part of the trip, the following speed:

In case the trip composition is determined by means of the first acceleration method, the first acceleration above 55 km/h (70 km/h in the case of vehicles of categories M 1 and N 1 ) shall indicate the beginning of the rural part and the first acceleration above 75 km/h (90 km/h in the case of vehicles of categories M 1 and N 1 ) shall indicate the beginning of the motorway part.

The criteria for differentiation between urban, rural and motorway operation shall be agreed with the approval authority prior to the beginning of the test.

Average speed in urban operation shall be between 15 and 30 km/h.

Average speed in rural operation shall be between 45 and 70 km/h (60 and 90 km/h in the case of vehicles of categories M 1 and N 1 ).

Average speed in motorway operation shall be above 70 km/h (90 km/h in the case of vehicles of categories M 1 and N 1 ).

4.5.1. For M 1 and N 1 vehicles the trip shall consist of approximately 34 % urban, 33 % rural and 33 % motorway operation. U.K.
4.5.2. For N 2 , M 2 and M 3 vehicles the trip shall consist of approximately 45 % urban, 25 % rural and 30 % motorway operation. M 2 and M 3 vehicles of Class I, II or Class A as defined in UN/ECE Regulation 107 shall be tested in approximately 70 % urban and 30 % rural operation. U.K.
[F24.5.3. For N 3 vehicles the trip shall consist of approximately 30 % urban, 25 % rural and 45 % motorway operation.] U.K.
4.5.4. For the purpose of the assessment of the trip composition, the duration of the share shall be calculated from the moment when the coolant temperature has reached 343 K (70 °C) for the first time or after the coolant temperature is stabilised within +/– 2 K over a period of 5 minutes whichever comes first but no later than 15 minutes after engine start. In accordance with paragraph 4.5 the period elapsed to reach the coolant temperature of 343 K (70 °C) shall be operated under urban driving conditions. U.K.

Artificial warming-up of the emission control systems prior to the test is prohibited.

4.5.5. The following distribution of the characteristic trip values from the WHDC database may serve as additional guidance for the evaluation of the trip: U.K.
(a)

accelerating: 26,9 % of the time;

(b)

decelerating: 22,6 % of the time;

(c)

cruising: 38,1 % of the time;

(d)

stop (vehicle speed = 0): 12,4 % of the time.]

4.6. Operational requirements U.K.

4.6.1.The trip shall be selected in such a way that the testing is uninterrupted and the data continuously sampled to reach the minimum test duration defined in point 4.6.5.U.K.
4.6.2.Emissions and other data sampling shall start prior to starting the engine. Any cold start emissions may be removed from the emissions evaluation, in accordance with point 2.6 of Appendix 1.U.K.
4.6.3.It shall not be permitted to combine data of different trips or to modify or remove data from a trip.U.K.
4.6.4.If the engine stalls, it may be restarted, but the sampling shall not be interrupted.U.K.
[F24.6.5. The test duration shall be long enough to complete between four and eight times the work performed during the WHTC or produce between four and eight times the CO 2 reference mass in kg/cycle from the WHTC as applicable.] U.K.
[F44.6.6. The electrical power to the PEMS system shall be supplied by an external power supply unit, and not from a source that draws its energy either directly or indirectly from the engine under test, except in the cases set out in points 4.6.6.1 and 4.6.6.2.] U.K.
[F54.6.6.1. As an alternative to point 4.6.6, the electrical power to the PEMS system may be supplied by the internal electrical system of the vehicle as long as the power demand for the test equipment does not increase the output from the engine by more than 1 % of its maximum power and measures are taken to prevent excessive discharge of the battery when the engine is not running or idling. U.K.

Textual Amendments

4.6.6.2. In case of a dispute the results of measurements performed with a PEMS system powered by an external power supply shall prevail over the results acquired in accordance with the alternative method provided for in point 4.6.6.1.] U.K.

Textual Amendments

4.6.7.The installation of the PEMS equipment shall not influence the vehicle emissions and/or performance.U.K.
4.6.8.It is recommended to operate the vehicles under normal daytime traffic conditions.U.K.
4.6.9.If the approval authority is not satisfied with the data consistency check results according to Sections 3.2 of Appendix 1 to this Annex, the approval authority may consider the test to be void.U.K.
[F14.6.10. If the particle exhaust after-treatment system undergoes a non-continuous regeneration event during the trip or an OBD class A or B malfunction occurs during the test, the manufacturer can request the trip to be voided.] U.K.