Document ID: chunk:federal_register_of_legislation:F2008C00323:front:0:p22
Version: federal_register_of_legislation:F2008C00323
Segment Type: other
Provision Reference: 
Character Range: 61333–64623

idling speed:

               (a) the carbon monoxide content by volume of the exhaust gases emitted shall be­­ recorded,

               (b) the engine speed during the test shall be recorded, including any tolerances.

           5.3.7.3.  When tested at 'high idle' speed (i. e. > 2,000 min.-1)

               (a) the carbon monoxide content by volume of the exhaust gases emitted shall be recorded,

               (b)  the Lambda value (*) shall be recorded.

               (c)  the engine speed during the test shall be recorded, including any tolerances.

               (*) The Lambda value shall be calculated using the simplified Brettschneider equation as follows:

where:

                [ ] = Concentration in per cent volume

                K1 = Conversion factor for NDIR measurement to FID measurement (provided by manufacturer of measuring equipment)

                                         Hcv = Atomic ratio of hydrogen to carbon - for petrol  1.73
                                         - for LPG    2.53
                                         - for NG      4.0

                                         Ocv = Atomic ratio of oxygen to carbon  - for petrol  0.02
                                         - for LPG    0.0
                                         - for NG      0.0

         5.3.7.4. The engine oil temperature at the time of the test shall be measured and recorded.

         5.3.7.5.  The table in item 17 to Annex 2 shall be completed.

         5.3.7.6. The manufacturer shall confirm the accuracy of the Lambda value recorded at the time of type approval in paragraph 5.3.7.3. as being representative of typical production vehicles within 24 months of the date of the granting of type approval by the competent authority. An assessment shall be made based on surveys and studies of production vehicles.

         5.3.8 OBD – test

          This test shall be carried out on all vehicles referred to in paragraph 1. The test procedure described in Annex 11, paragraph 3. shall be followed.

         6.  MODIFICATIONS OF THE VEHICLE TYPE

         6.1. Every modification of the vehicle type shall be notified to the administrative department that approved the vehicle type. The department may then either:

         6.1.1. consider that the modifications made are unlikely to have an appreciable adverse effect and that in any case the vehicle still complies with the requirement; or

         6.1.2. require a further test report from the technical service responsible for conducting the tests.

         6.2. Confirmation or refusal of approval, specifying the alterations, shall be communicated by the procedure specified in paragraph 4.3. above to the Parties to the Agreement which apply this Regulation.

         6.3. The competent authority issuing the extension of approval shall assign a series number to the extension and inform thereof the other Parties to the 1958 Agreement applying this Regulation by means of a communication form conforming to the model in Annex 2 to this Regulation.

         7.  EXTENSION OF APPROVAL

         In the case of modifications of the type approval pursuant to this Regulation, the following special provisions shall apply, if applicable.

         7.1.  Exhaust emission related extensions