Document ID: chunk:federal_register_of_legislation:F2012C00283:front:0:p22
Version: federal_register_of_legislation:F2012C00283
Segment Type: other
Provision Reference: 
Character Range: 68519–71866

and hydrocarbon exhaust emissions after a cold start).
              5.3.5.1. This test shall not be applied to compression ignition vehicles.
                 However, for compression ignition vehicles when applying for type approval, manufacturers shall present to the Approval Authority information showing that the NOX after treatment device reaches a sufficiently high temperature for efficient operation within 400 seconds after a cold start at -7 °C as described in Type VI test.
                In addition, the manufacturer shall provide the Approval Authority with information on the operating strategy of the exhaust gas recirculation system (EGR), including its functioning at low temperatures.
                This information shall also include a description of any effects on emissions.
                The Approval Authority shall not grant type approval if the information provided is insufficient to demonstrate that the after treatment device actually reaches a sufficiently high temperature for efficient operation within the designated period of time.
              5.3.5.1.1. The vehicle is placed on a chassis dynamometer equipped with a means of load an inertia simulation.
              5.3.5.1.2. The test consists of the four elementary urban driving cycles of Part One of the Type I test. The Part One test is described in paragraph 6.1.1. of Annex 4a, and illustrated in figure 1 of the same annex. The low ambient temperature test lasting a total of 780 seconds shall be carried out without interruption and start at engine cranking.
              5.3.5.1.3. The low ambient temperature test shall be carried out at an ambient test temperature of 266 K (-7°C). Before the test is carried out, the test vehicles shall be conditioned in a uniform manner to ensure that the test results may be reproducible. The conditioning and other test procedures are carried out as described in Annex 8.
              5.3.5.1.4. During the test, the exhaust gases are diluted and a proportional sample collected. The exhaust gases of the vehicle tested are diluted, sampled and analysed, following the procedure described in Annex 8, and the total volume of the diluted exhaust is measured. The diluted exhaust gases are analysed for carbon monoxide and total hydrocarbons.
              5.3.5.2. Subject to the requirements in paragraphs 5.3.5.2.2. and 5.3.5.3. the test shall be performed three times. The resulting mass of carbon monoxide and hydrocarbon emission shall be less than the limits shown in the table below:
               Emission limit for the carbon monoxide and hydrocarbon tailpipe emissions after a cold start test

Test temperature 266 K (-7 °C)
                                       Mass of carbon monoxide  Mass of hydrocarbons (HC)
Vehicle catgory                 Class  (CO)                     L2 (g/km)
                                       L1 (g/km)
M                               -      15                       1.8
N1                              I      15                       1.8
II                              24     2.7
III                             30     3.2
N2                              -      30                       3.2

              5.3.5.2.1. Notwithstanding the requirements of paragraph 5.3.5.2., for each pollutant, not more than one of the three results obtained may exceed