Document ID: chunk:federal_register_of_legislation:F2011C00805:front:0:p7
Version: federal_register_of_legislation:F2011C00805
Segment Type: other
Provision Reference: 
Character Range: 17457–20498

49 as amended by the last series of amendments.

         1.2. This Regulation does not apply to vehicles equipped with positive-ignition engines fuelled with NG or LPG used for driving motor vehicles of M1 category having a maximum mass exceeding 3,500 kg, M2, M3, N2, or N3 to which Regulation No. 49 is applicable.

         2.  DEFINITIONS

         For the purposes of this Regulation:

         2.1. "Vehicle type" means a category of power-driven vehicles that do not differ in such essential respects as:

         the equivalent inertia determined in relation to the reference mass as prescribed in Annex 4, paragraph 5.1.; and

         2.1.2. the engine and vehicle characteristics as defined in Annex 1.

         2.2. "Reference mass" means the "unladen mass" of the vehicle increased by a uniform figure of 100 kg for test according to Annexes 4 and 8.

         2.2.1. "Unladen mass" means the mass of the vehicle in running order without driver, passengers or load, but with the fuel tank 90 per cent full and the usual set of tools and spare wheel on board, where applicable.

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

         2.4. "Gaseous pollutants" means the exhaust gas emissions of carbon monoxide, oxides of nitrogen, expressed in nitrogen dioxide (NO2) equivalent and hydrocarbons assuming ratio of:

         – C1H1,85 for petrol,
         – C1H1,86 for diesel,
         – C1H2.525 for LPG
         – C1H4 for NG.

         2.5. "Particulate pollutants" means components of the exhaust gas which are removed from the diluted exhaust gas at a maximum temperature of 325 K (52 C) by means of the filters described in Annex 4.

         2.6. "Exhaust emissions" means:

         2.6.1. for positive-ignition (P.I.) engines, emissions of gaseous pollutants;

         2.6.2. for compression-ignition (C.I.) engines, emissions of gaseous and particulate pollutants.

         2.7. "Evaporative emissions" means the hydrocarbon vapours lost from the fuel system of a motor vehicle other than those from exhaust emissions.

         2.7.1. "Tank breathing losses" are hydrocarbon emissions caused by temperature changes in the fuel tank (assuming a ratio of C1H2.33).

         2.7.2. "Hot soak losses" are hydrocarbon emissions arising from the fuel system of a stationary vehicle after a period of driving (assuming a ratio of C1 H2.20).

         2.8. "Engine crankcase" means the spaces in or external to an engine which are connected to the oil sump by internal or external ducts through which gases and vapour can escape.

         2.9. "Cold start device" means a device that temporarily enriches the air/fuel mixture of the engine thus assisting the engine to start.

         2.10. "Starting aid" means a device which assists engine start up without enrichment of the air/fuel mixture of the engine, e.g. glow plug, injection timing change, etc.