Document ID: chunk:federal_register_of_legislation:F2021C00509:front:0:p8
Version: federal_register_of_legislation:F2021C00509
Segment Type: other
Provision Reference: 
Character Range: 22270–25938

different test method, these differences are to be considered as a change of type.

           2.3.                                              "Noise reduction system" means a complete set of components necessary for limiting the noise made by a motor vehicle and its exhaust;

           2.4.                                              "Noise reduction systems of different types" means noise reduction systems which differ in such essential respects as:

           2.4.1.                                        that their components as specified in paragraph 4.1, bear different trade names or marks;

           2.4.2.                                        that the characteristics of the materials constituting a component are different or that the components differ in shape or size, a change in the plating procedure (galvanization, aluminium coating, etc.) is not deemed to produce a difference of type;

           2.4.3.                                        that the operating principles of at least one component are different;

           2.4.4.                                        that their components are assembled differently;

           2.4.5.                                        that the number of the intake and/or exhaust silencers is different.

           2.5.                                              "Noise reduction system component" means one of the individual constituent parts whose assembly constitutes the noise reduction system.
           These components are, in particular: the exhaust pipings, the expansion chamber(s), the silencer(s) proper.

           2.5.1.                                        The air filter is considered as a component only if its presence is essential to ensure observance of the prescribed sound-level limits.

           2.5.2.                                        Manifolds are not considered components of the noise reduction system.

           2.6.                                              "Maximum mass" means the technically permissible maximum mass declared by the vehicle manufacturer (this weight may be greater than the maximum weight authorized by the national administration).

           2.7.                                              "Engine power" means the engine power expressed in kW (ECE) and measured by the ECE method pursuant to UN/ECE Regulation No. 85.

3. APPLICATION FOR APPROVAL

           3.1. The application for approval of a vehicle type with regard to noise shall be submitted by its manufacturer or by his duly accredited representative.

           3.2. It shall be accompanied by the under-mentioned documents and the following particulars in triplicate:

           3.2.1. a description of the vehicle type with regard to the items mentioned in paragraph 2.2 above. The numbers and/or symbols identifying the engine type and the vehicle type shall be specified;

           3.2.2. a list of the components, duly identified, constituting the noise reduction system;

           3.2.3. a drawing of the assembled noise reduction system and an indication of its position on the vehicle;

           3.2.4. detailed drawings of each component to enable it to be easily located and identified, and a specification of the materials used.

           3.3. In the case of paragraph 2.2.6 the single vehicle, representative of the type in question, will be selected by the technical service conducting approval tests, in accordance with the vehicle manufacturer, as that with the lowest mass in running order with the shortest length and following the specification laid down in paragraph 3.1.2.3.2.3 in annex 3.

           3.4. At the request of