Document ID: chunk:federal_register_of_legislation:F2006L01279:body:0:p2
Version: federal_register_of_legislation:F2006L01279
Segment Type: other
Provision Reference: 
Character Range: 3144–6298

constitutes the 'Noise Reduction System'.

         28.1.1.1  These 'Components' are, in particular, the exhaust manifold, the exhaust piping, the expansion chamber, the silencer proper. If the engine intake is equipped with an air filter and the filter's presence is essential to ensure observance of the prescribed sound level limits, the filter must be regarded as a 'Component' of the 'Noise Reduction System'.

         28.1.2   'Diesel Engine' means an internal combustion engine which operates on the compression-ignition principle.

         28.1.3   'Engine Speed at Maximum Power' ('ESMP') means the speed at which the engine develops maximum power (r/min).

         28.1.4   'Net Engine Power' ('NEP') means the engine power expressed in kW (ECE) and measured:

         28.1.4.1   for positive-ignition engines, by the method described in Annex 8 to UN ECE Regulation No 15 - "Emission of Gaseous Pollutants":

         28.1.4.2   for 'Diesel Engines', by the method described in Annex 10 to UN ECE Regulation No. 24 - "Diesel Engine Pollutant Emissions",

         28.1.5   'Noise Reduction System' means a complete set of 'Components' necessary for limiting the noise made by a motor vehicle and its exhaust.

         28.1.6   'Off-road Use' means the type of use requiring a vehicle to have the special design features listed in the definition of 'Off-road Passenger Vehicle'.

         28.1.7   'Spark Ignition' means positive ignition.

    28.2     SPECIFICATIONS

         28.2.1   General specifications

         28.2.1.1   The vehicle, its engine and its 'Noise Reduction System' shall be so designed, constructed and assembled as to enable the vehicle in normal use, despite the vibration to which it may be subjected, to comply with the provisions of this vehicle standard.

         28.2.1.2   The 'Noise Reduction System' and its 'Components' shall be so designed, constructed and assembled as to resist the corrosive action to which the vehicle is exposed.

         28.2.2   Specifications regarding sound levels

         28.2.2.1   Methods of measurement.

         28.2.2.1.1   The noise made by the vehicle shall be measured by the two methods described in the Annex for the vehicle in motion and for the vehicle when stationary.[1]

         28.2.2.1.2   The values so obtained shall be entered in the test report for the vehicle.

         28.2.2.2   Sound level limits.

         28.2.2.2.1   The sound level measured by the two methods described in the Annex for vehicles in motion and for stationary vehicles shall not exceed (except as prescribed) the limits contained in Table 1.

28.3    ALTERNATIVE STANDARDS

         28.3.1  For vehicles other than Goods Vehicles and Omnibuses the technical requirements of UN ECE Regulation 51/01 or 51/02 - "Vehicle Noise Emissions" (as harmonized with EEC Directives 84/424 or 92/97- "The Sound Level of Vehicles") shall be deemed to be equivalent to the technical requirements of this Vehicle standard provided that the noise level recorded during the test on the vehicle while stationary does not exceed the appropriate limit listed in Table 1.

         28.3.2    For