Document ID: chunk:federal_register_of_legislation:F2024C00356:reg:20:p5
Version: federal_register_of_legislation:F2024C00356
Segment Type: reg
Provision Reference: reg 20 (pt 5/19)
Character Range: 235937–239192

and sources to determine the corresponding alternatives for each approval case are also referred.

       1. Number of country according to footnote in paragraph 4.4.1. of this Regulation.
       2. According to Table 1 of this Annex.

       The following graph is a practical example of how the marking should be composed.

       The preceding approval mark affixed to a vehicle in conformity with paragraph 4. of this Regulation shows that the vehicle type concerned has been approved in the United Kingdom (E11), pursuant to Regulation No. 83 under approval number 2439. This mark indicates that the approval was given in accordance with the requirements of this Regulation with the 06 series of amendments incorporated. Furthermore, the accompanying letter (J) denotes that the vehicle belongs to vehicle category M or N1,I.

Table 1
Letters with reference to fuel, engine and vehicle category
Character  Vehicle category and class            Engine type
J          M, N1 class I.                        PI
                                                 CI
K          M1 to fulfill specific social needs   CI
           (excluding M1G)
L          N1 class II                           PI
                                                 CI
M          N1 class III, N2                      PI
                                                 CI

Annex 4a
  Type I Test

(Verifying exhaust emissions after a cold start)
              1. Applicability
  This Annex effectively replaces former Annex 4.
              2. Introduction
               This annex describes the procedure for the Type I test defined in paragraph 5.3.1. of this Regulation. When the reference fuel to be used is LPG or NG/biomethane, the provisions of Annex 12 shall apply additionally.
              3. Test conditions
              3.1. Ambient conditions

              3.1.1. During the test, the test cell temperature shall be between 293 K and 303 K (20 °C and 30 °C). The absolute humidity (H) of either the air in the test cell or the intake air of the engine shall be such that:

          5.5 < H ≤ 12.2 (g H2O/kg dry air)

                The absolute humidity (H) shall be measured.

                The following temperatures shall be measured:

                Test cell ambient air

                Dilution and sampling system temperatures as required for emissions  measurement systems defined in Appendices 2 to 5 of this annex.

                The atmospheric pressure shall be measured.
              3.2. Test vehicle
              3.2.1. The vehicle shall be presented in good mechanical condition. It shall have been run-in and driven at least 3,000 km before the test.
              3.2.2. The exhaust device shall not exhibit any leak likely to reduce the quantity of gas collected, which quantity shall be that emerging from the engine.
              3.2.3. The tightness of the intake system may be checked to ensure that carburation is not affected by an accidental intake of air.
              3.2.4. The settings of the engine and of the vehicle's controls shall be those prescribed by the manufacturer. This requirement also applies, in particular, to the settings for idling (rotation speed and carbon monoxide content of the exhaust