D5 Annex report WP 3: ETIS Database methodology ... - ETIS plus

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D5 Annex WP 3: DATABASE METHODOLOGY AND DATABASE USER MANUAL – FREIGHT TRANSPORT DEMAND without catalyst, according to the following equation: excess consumption for diesel cars with catalyst excess consumption for diesel cars without catalyst = a Cold correction E c = å i ( i ) æ cm s, v ç tf i × × w i × è 100 å å å j k m é p × p × p ê ë 10 6 × d j k m m d m × ( f ( V j ) + g ( T k ) - 1 ) × h æ ö ù ö ç ÷ ú ÷ è d c (V j ) ø û ø the following parameters are model internal data: cm (s, vi) percentage of mileage recorded under cold start or intermediate temperature conditions for season s and overall speed vi of vehicle type i (%) wi reference excess emission for vehicle type i (g) j speed class with a cold engine k class of startup engine temperature m trip length class pj percentage of the trips travelled at speed j with a cold engine, for the overall average speed considered (%) pk percentage of the trips travelled with a startup engine temperature Tk (%) pm percentage of trips started with a cold engine and distance dm, for speed Vj with a cold engine (%) dm average distance of the trips under cold start conditions of class m (km) Vj average speed with a cold engine corresponding to class j (km/h) Tk average startup temperature of class k (°C) 108 Document2 27 may 2004
D5 Annex WP 3: DATABASE METHODOLOGY AND DATABASE USER MANUAL – FREIGHT TRANSPORT DEMAND f, g, h and dc are provided as coefficients relevant for calculating cold emissions Examples from e.g. UNITE : corresponding unit costs Examples from RECORDIT: FREIGHT transport including marginal costs Variable definition Variable computation method Directly from a database or agreed classifications/nomenclatures Output of the model Method variable V1 Method variable V2 Method variable V3 Method variable V4 Method variable V5 Method variable V6 Method variable V7 E total= Total energy consumption E hot= Hot running consumption e= the hot consumption factor (in g/km) m= the activity, in distance travelled per time unit (usually in km/year) n= is the number of vehicles in each category l= is the average distance travelled by the average vehicle of each category over the time unit (in km/year) ec= the corrected hot consumption factor for the vehicle fleet, in consideration of the influence of gradient and in the case of catalyst vehicles of mileage Document2 27 May 2004 109
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