Life-Cycle Emissions Analysis of Fuels for Light Vehicles
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Life-Cycle Emissions Analysis of Fuels for Light Vehicles REPORT (HA93A-C837/1/F5.2E) to the AUSTRALIAN GREENHOUSE OFFICE by Tom Beer1,2, Tim Grant3, Harry Watson4 and Doina Olaru1 1 CSIRO Atmospheric Research, Aspendale, Vic. 2 CSIRO Environmental Risk Network, Aspendale, Vic. 3 RMIT Centre for Design, Melbourne, Vic. 4 University of Melbourne, Department of Mechanical and Manufacturing Engineering, Parkville, Vic. May 2004 in association with Life-Cycle Emissions Analysis of Fuels for Light Vehicles Contact Dr Tom Beer Co-ordinator CSIRO Environmental Risk Network Private Bag 1 Aspendale Vic. 3195 Australia Phone: (03) 9239 4400 Fax: (03) 9239 4444 International: +613 9239 4400 Fax +613 9239 4444 e-mail: [email protected] Report (HA93A-C837/1/F5.1) Page ii Life-Cycle Emissions Analysis of Fuels for Light Vehicles Table of Contents Acronyms ...............................................................................................................................................vi Acknowledgements............................................................................................................................. viii Executive Summary ...............................................................................................................................1 1. Background.....................................................................................................................................7 1.1. Introduction...............................................................................................................................7 1.1.1 Approach ........................................................................................................................8 1.2. Structure of the report...............................................................................................................8 1.3. Sources of quantitative information..........................................................................................9 1.4. Greenhouse gases and other emissions...................................................................................10 1.4.1 Criteria air pollutants....................................................................................................11 1.5. Drive cycles ............................................................................................................................12 1.5.1 Methodology for converting ADR 37 to ADR79.........................................................14 1.6. Life-cycle analysis ..................................................................................................................15 1.7. The automobile life cycle .......................................................................................................15 1.8. The fuel life cycle ...................................................................................................................21 2. Normalisation................................................................................................................................22 2.1. Emission regulations...............................................................................................................22 2.2. Effects of the vehicle mass .....................................................................................................23 2.3. Effects of the mix of vehicles in the fleet ...............................................................................28 2.4. Light trucks and four wheel drives .........................................................................................30 2.5. Comparison between fuels (tailpipe emissions) .....................................................................31 3. Petrol and diesel............................................................................................................................33 3.1. Introduction.............................................................................................................................34 3.1.1 Effects of changing octane number ..............................................................................34 3.2. Upstream emissions ................................................................................................................36 3.2.1 Oil and gas production..................................................................................................36 3.2.2 Refinery production......................................................................................................39 3.3. Allocating emissions to petrol variants...................................................................................40 3.3.1 Ultra low sulfur (50 ppm) PULP ..................................................................................41 3.3.2 Low sulfur diesel ..........................................................................................................42 3.4. Tailpipe emissions from petrol engines ..................................................................................45 3.4.1 ULP and PULP tailpipe emissions ...............................................................................45 3.4.2 ULS–PULP...................................................................................................................46 3.4.3 Particulate matter emissions from petrol vehicles........................................................46 3.4.4 Tailpipe emissions from diesel vehicles.......................................................................47 3.5. Results.....................................................................................................................................47 Report (HA93A-C837/1/F5.1) Page iii Life-Cycle Emissions Analysis of Fuels for Light Vehicles 4. LPG................................................................................................................................................49 4.1. LPG in Australia .....................................................................................................................49 4.2. Literature review.....................................................................................................................49 4.2.1 Motor vehicle pollution in Australia ............................................................................49 4.2.2 Comparative vehicle emissions study...........................................................................49 4.2.3 Greenhouse gas emissions from motor vehicles in Australia.......................................49 4.2.4 Emissions from passenger vehicles on unleaded petrol and LPG ................................49 4.2.5 Systematic evaluation of twelve LP gas fuels for emissions and fuel consumption ....50 4.2.6 LPG as an automotive fuel—an environmental and technical perspective ..................50 4.2.7 LPG: A bridge to the future..........................................................................................50 4.3. Structure of the Chapter..........................................................................................................50 4.4. Life-cycle analysis of emissions .............................................................................................51 4.4.1 Production life cycle for LPG.......................................................................................51 4.4.2 Fuel combustion ...........................................................................................................63 4.5. Dual-fuel Vehicles ..................................................................................................................71 5. CNG ...............................................................................................................................................73 5.1. Background.............................................................................................................................73 5.2. Upstream emissions ................................................................................................................74 5.2.1 Fugitive emissions........................................................................................................74 5.2.2 Methane fugitive losses in distribution.........................................................................76 5.2.3 Release of new data on fugitives and energy in oil and gas processing .......................77 5.3. Tailpipe emissions ..................................................................................................................78 5.3.1 Methane emissions from vehicles.................................................................................78 5.4. Discussion...............................................................................................................................79 6. Hybrid Vehicles ............................................................................................................................80 6.1. Hybrid vehicle life-cycle calculations ....................................................................................80 6.2. Batteries and supercapacitors..................................................................................................81 7. European drive cycle emission results ........................................................................................85 7.1. Exbodied emission results ......................................................................................................85 7.1.1 Euro 3 vehicles with ULP.............................................................................................86