Document ID: chunk:federal_register_of_legislation:F2024C00356:front:0:p22
Version: federal_register_of_legislation:F2024C00356
Segment Type: other
Provision Reference: 
Character Range: 95002–97839

more than 10 per cent, the limit prescribed, provided the arithmetical mean of the three results is below the prescribed limit. Where the prescribed limits are exceeded for more than one pollutant, it is immaterial whether this occurs in the same test or in different tests.
              5.3.1.4.2. When the tests are performed with gaseous fuels, the resulting mass of gaseous emissions shall be less than the limits for petrol-engined vehicles in the above table.
              5.3.1.5. The number of tests prescribed in paragraph 5.3.1.4. is reduced in the conditions hereinafter defined, where V1 is the result of the first test and V2 the result of the second test for each pollutant or for the combined emission of two pollutants subject to limitation.
              5.3.1.5.1. Only one test is performed if the result obtained for each pollutant or for the combined emission of two pollutants subject to limitation, is less than or equal to 0.70 L (i.e. V1  0.70 L).
              5.3.1.5.2. If the requirement of paragraph 5.3.1.5.1. is not satisfied, only two tests are performed if, for each pollutant or for the combined emission of two pollutants subject to limitation, the following requirements are met:
V1   0.85 L and V1 + V2  1.70 L and V2  L.

Figure 1
Flow chart for Type I type approval
5.3.2.  Type II test (Carbon monoxide emission test at idling speed)
              5.3.2.1. This test is carried out on all vehicles powered by positive-ignition engines having:
              5.3.2.1.1. Vehicles that can be fuelled either with petrol or with LPG or NG/biomethane shall be tested in the test Type II on both fuels.
              5.3.2.1.2. Notwithstanding the requirement of paragraph 5.3.2.1.1., vehicles that can be fuelled with either petrol or a gaseous fuel, but where the petrol system is fitted for emergency purposes or starting only and which the petrol tank cannot contain more than 15 litres of petrol will be regarded for the test Type II as vehicles that can only run on a gaseous fuel.
              5.3.2.2.  For the Type II test set out in Annex 5, at normal engine idling speed, the maximum permissible carbon monoxide content in the exhaust gases shall be that stated by the vehicle manufacturer. However, the maximum carbon monoxide content shall not exceed 0.3 per cent vol.

                At high idle speed, the carbon monoxide content by volume of the exhaust gases shall not exceed 0.2 per cent, with the engine speed being at least 2,000 min-1 and Lambda being 1 ±0.03 or in accordance with the specifications of the manufacturer.

              5.3.3. Type III test (verifying emissions of crankcase gases)
              5.3.3.1. This test shall be carried out on all vehicles referred to in paragraph 1. except those having compression-ignition engines.
              5.3.3.1.1.