Document ID: chunk:federal_register_of_legislation:F2008C00323:front:0:p24
Version: federal_register_of_legislation:F2008C00323
Segment Type: other
Provision Reference: 
Character Range: 66888–70297

all the conditions prescribed in paragraphs 7.1.1. and 7.1.2. are fulfilled.

         7.1.4.  Note:  When a vehicle type has been approved in accordance with paragraphs 7.1.1. to 7.1.3., such approval may not be extended to other vehicle types.

         7.2.  Evaporative emissions (Type IV test)

         7.2.1. Approval granted to a vehicle type equipped with a control system for evaporative emissions may be extended under the following conditions:

         7.2.1.1. The basic principle of fuel/air metering (e.g. single point injection, carburettor) shall be the same.

         7.2.1.2. The shape of the fuel tank and the material of the fuel tank and liquid fuel hoses shall be identical. The worst-case family with regard to the cross-paragraph and approximate hose length shall be tested. Whether non-identical vapour/liquid separators are acceptable is decided by the technical service responsible for the type approval tests. The fuel tank volume shall be within a range of  10 per cent. The setting of the tank relief valve shall be identical.

         7.2.1.3. The method of storage of the fuel vapour shall be identical, i.e. trap form and volume, storage medium, air cleaner (if used for evaporative emission control), etc.

         7.2.1.4. The carburetor bowl fuel volume shall be within a  10 millilitre range.

         7.2.1.5. The method of purging of the stored vapour shall be identical (e.g. air flow, start point or purge volume over driving cycle).

         7.2.1.6. The method of sealing and venting of the fuel metering system shall be identical.

         7.2.2. Further notes:

               (i) different engine sizes are allowed;

             (ii)  different engine powers are allowed;

             (iii) automatic and manual gearboxes, two and four-wheel transmissions are allowed;

             (iv)  different body styles are allowed;

             (v) different wheel and tyre sizes are allowed.

         7.3. Durability of anti-pollution devices (Type V test)

         7.3.1. Approval granted to a vehicle type may be extended to different vehicle types, provided that the engine/pollution control system combination is identical to that of the vehicle already approved. To this end, those vehicle types whose parameters described below are identical or remain within the limit values prescribed are considered to belong to the same engine/pollution control system combination.

         7.3.1.1. Engine:

            number of cylinders,

            engine capacity ( 15 per cent),

            configuration of the cylinder block,

            number of valves,

            fuel system,

            type of cooling system,

            combustion process,

            cylinder bore centre to centre dimensions.

         7.3.1.2.  Pollution control system:

            catalytic converters:

            number of catalytic converters and elements,

            size and shape of catalytic converters (volume of monolith  10 per cent),

            type of catalytic activity (oxidising, three-way,...),

            precious metal load (identical or higher),

            precious metal ratio ( 15 per cent),

            substrate (structure and material),

            cell density,

            type of casing for the catalytic converter(s),

            location of catalytic converters (position and dimension in the exhaust system, that does