Project_Data_The_Emissions_Model_for_2011_Illustrative

Project_Data_The_Emissions_Model_for_2011_Illustrative -...

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Illustrative Model Assessing Passenger Car CO2 and MPG for UK Totals (2009) Inputs (Total UK Analysis) Values Units Comments Colour Conventions Method / Scenario 2 Selection An Example set of Scenarios Black in Yellow Box = User Inputs 1=Autocar Test Results Black = Data 2=Unadjusted VCA Orange = Tranfers of Information 3=DEFRA Blue = Calculations 4 = Engine Size Model Autocar Parameters An Example of Modelling Diesel 1.1 40 From regression model Petrol 1 20 for Autocar Sample Emission to MPG Factors An Example of Conversion Factors Diesel 7000 Number If the data are MPG you might Petrol 6000 Number need CO2 estimates and vice versa UK Traffic Volume 400 BVKMS Department for Transport (DFT) Sources Fuel Price Diesel £1.38 £ sterling DFT supply Average Values Fuel Price Petrol £1.35 £ sterling An Example of More Detailed Outputs Headline UK Outputs Values Units Comments Car Category Diesel MPG Petrol MPG Total UK Emissions 66.78 Million tonnes CO2 The main output sought Mini 66.14 47.14 Average Emissions 166.96 CO2 grams per km For the average 'on the road' car Supermini 61.99 41.83 Average MPG Lower Medium 51.83 34.68 Diesel Car 46.34 MPG The model breaks this down Upper Medium 47.69 30.38 Petrol Car 34.34 MPG (see example to the right) Executive 41.05 25.61 Fuel Costs (UK) Luxury 30.29 19.02 Diesel Car £3.92 £ Billion These are just retail price costs to motorists Specialist Sports 48.43 26.05 Petrol Car £10.56 £ Billion Could be broken down by SUV or 4x4 33.30 23.85 Total Fuel Cost £14.47 £ Billion crude oil costs, refining, taxation etc MPV 43.03 31.47 Notes The Selection Input refers to possible alternative methods for assessing CO2 Emission Factors - you will find out from the documents what these are The model as presented here aims to reflect total UK outputs but the model could with minor adjustments be used for other fleets also Other Outputs might be Selected other than those shown on this sheet Other Inputs and Data are found in 'Factors' and 'Analysis 2009' sheets This is ONLY an illustration of the type of model required as a Guide to the sort of DSS Model you should be aiming for The data used in this illustration are not correct but the model is not misleading
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Scenarios 1 AC Method Autocar Model 3 VCA Method 1.1 1 3 4 5 DEFRA Method 2 40 20 VCA Method 7 Based on Engine Size 1 1 2 3 4 5 6 7 8 2 3 Model Alternative Sources 4 Age Group Car Category Il ustration Input Diesel Input Petrol AC diesel AC petrol VCA Diesel VCA Petrol DEFRA Diesel DEFRA Petrol Engine Size Diesel Engine Size Petrol 5 PRE 1995 Mini 164.30 158.00 113 138 164.30 158.00 113 138 121 135 100 120 6 Supermini 166.50 178.00 115 158 166.50 178.00 115 158 135 155 120 150 7 Lower Medium 203.90 211.00 149 191 203.90 211.00 149 191 155 185 160 210 8 Upper Medium 232.50 236.00 175 216 232.50 236.00 175 216 163 208 162 240 9 Executive 250.10 272.00 191 252 250.10 272.00 191 252 190 251 205 245 10 Luxury 320.50 357.00 255 337 320.50 357.00 255 337 250 336
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Project_Data_The_Emissions_Model_for_2011_Illustrative -...

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