4.TEST CONDITIONSU.K.
4.1. Vehicle payload U.K.
For the purpose of in-service conformity testing the payload may be reproduced and an artificial load may be used.
In the absence of statistics to demonstrate that the payload is representative for the vehicle, the vehicle payload shall be 50 to 60 % of the maximum vehicle 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.
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:
T is the ambient air temperature, K
pb is the atmospheric pressure, kPa
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.
4.4.1. Lubricating oil U.K.
Oil samples shall be taken.
4.4.2. Fuel U.K.
The test fuel shall be market fuel covered by Directive 98/70/EC and relevant CEN standards or reference fuel as specified in Annex IX to this Regulation. Fuel samples shall be taken.
4.4.2.1.If the manufacturer in accordance with Section 1 of Annex I to this Regulation has declared the capability to meet the requirements of this Regulation on market fuels declared in point 3.2.2.2.1 of Appendix 4 to Annex I to this Regulation, tests shall be conducted on at least one of the declared market fuels or blend between the declared market fuels and the market fuels included in Directive 98/70/EC and the relevant CEN standards.U.K.
4.4.3. Reagent U.K.
For exhaust after-treatment systems that use a reagent to reduce emissions, a sample of the reagent shall be taken. The reagent shall not be frozen.
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 In the case another testing order is justified for practical reasons and after the agreement of the approval authority another order of urban, rural and motorway operation may be used.
For the purpose of this Section, ‘approximately’ shall mean the target value ± 5 %.
Urban operation is characterised by vehicle speeds between 0 and 50 km/h,
Rural operation is characterised by vehicle speeds between 50 and 75 km/h,
Motorway operation is characterised by vehicle speeds above 75 km/h.
4.5.1.For M1 and N1 vehicles the trip shall consist of approximately 45 % urban, 25 % rural and 30 % motorway operation.U.K.
4.5.2.For M2 and M3 vehicles the trip shall consist of approximately 45 % urban, 25 % rural and 30 % motorway operation. M2 and M3 vehicles of Class I, II or Class A as defined in Annex I to Directive 2001/85/EC of the European Parliament and of the Council(1) shall be tested in approximately 70 % urban and 30 % rural operation.U.K.
4.5.3.For N2 vehicles the trip shall consist of approximately 45 % urban, 25 % rural and followed by 30 % motorway operation.U.K.
4.5.4.For N3 vehicles the trip shall consist of approximately 20 % urban, 25 % rural and followed by 55 % motorway operation.U.K.
4.5.5The following distribution of the characteristic trip values from the WHDC database may serve as additional guidance for the evaluation of the trip:U.K.
accelerating: 26,9 % of the time;
decelerating: 22,6 % of the time;
cruising: 38,1 % of the time;
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.
4.6.5.The minimum test duration shall be long enough to complete five times the work performed during the WHTC or produce five times the CO2 reference mass in kg/cycle from the WHTC as applicable.U.K.
4.6.6.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.U.K.
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.
4.6.10.The same route shall be used for the tests of vehicles within the sample described in points 3.1.1 to 3.1.3.U.K.
Directive 2001/85/EC of the European Parliament and of the Council of 20 November 2001 relating to special provisions for vehicles used for the carriage of passengers comprising more than eight seats in addition to the driver’s seat, and amending Directives 70/156/EEC and 97/27/EC (OJ L 42, 13.2.2002, p. 1).