TRANSPORT FOR LONDON BUSES – SUPPORTING REDUCTION
Transcript
TRANSPORT FOR LONDON BUSES – SUPPORTING REDUCTION
TRANSPORT FOR LONDON BUSES – SUPPORTING REDUCTION IN POLLUTION Mike Weston Director of Buses – Transport for London Coordinato da: Organizzato da: Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 Agenda The London bus network and its environmental impact Environmental Challenges Understanding the Impact The Solutions Roll-out Trials 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 2 The London Bus Network Network contracted by TfL from Private Operators Buses operate 24 hours per day, 7 days a week 19,500 bus stops 6.5 million journeys per week day 9,000 buses 700 routes 750 new buses each year 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 3 Environmental Challenges EU Limit Values of 40 µg/m3 for NO2 and PM PM just below limit (though no safe level) NO2 is 3 times higher than limit value in some areas Mayor has targeted 60% reduction in CO2 by 2025 from 1990 levels 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 4 Calculating Fleet Environmental Impacts • TfL developed with Millbrook a ‘real world’ drive cycle based on Route 159 from Brixton to Oxford Street • Every new type of bus is tested to ensure CO2, PM and NOx emissions meet TfL’s requirements • Enables TfL to model the impact of the Bus Fleet on London emissions and predict the impact of interventions 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 5 Fleet Emission Trends 7000 6000 600 5000 PM10 and CO2 emissions p.a. 700 500 4000 400 3000 300 200 2000 100 1000 0 0 1997 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 6 p.a. 800 NOx emissions PM10 - Tonnes CO2 - Kilotonnes NOx - Tonnes London’s NO2 concentrations Limit Value 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri LAEI 2010 Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 7 NOx Emission Sources in London - 2010 Motorcycle 0% Taxi 4% Other transport 16% HGV 25% Road Transport 47% Car 38% Coach 5% Non-transport 37% Bus 17% LGV 11% 28% of transport NOx emissions in Central London are from buses 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 8 SCR Retrofit and Euro VI Rollout From Dec 2015 all TfL Buses meet the Euro IV standard for PM & NOx 2300 Euro III buses retrofitted with SCR reducing NOx by 88% Euro VI buses emit 95% less NOx than Euro V 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 9 Power-train Electrification Power-train electrification has an increasing role to play in lowering carbon emissions and air pollution from passenger transport vehicles 20% of the TfL Bus Fleet are already diesel-electric hybrid Further electrification of the bus fleet through full electric and plug-in hybrid buses can offer significant further emissions savings This CO2 saving will increase with further decarbonisation of the UK’s power generation base 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 10 CO2 Reduction – Rollout Hybrids chosen as they offered the most cost effective means of CO2 reduction Trials consisted of 56 buses across 8 major operators with the monitoring and evaluation period from 2006 to 2010 Four manufacturers – ADL, Volvo, Wrights and Optare – single and double deck 30% CO2 saving to be demonstrated over MLTB test cycle – Low Carbon Bus Certificate and 40% for New Routemaster Currently 1700 in service rising to 3,300 by 2020 (ULEZ) Currently better for double deck than single deck 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 11 Future Technology Trials Electric bus trials 13 Optare Metro City’s in service on route H98 & 312 Two BYD and two Irizar 12m electric buses in service on route 507/521 Route 507/521 will be fully electric later this year – using 51 BYD/ADL buses Pure electric double deck trial underway– challenge weight & range 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 12 Charging Infrastructure Operators bid for the entire cost of running a route – includes charging infrastructure Opportunity charging during the day – optimising range/cost/weight vs charging infrastructure – route dependant Power supply upgrades normally required Smart charging so that all vehicles are not charging at the same time Space and safety requirements in some garages mean that operators may need to fit over-head gantrys Potential to connect to High Voltage London Underground network at certain locations 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 13 BYD ebus performance data A snapshot of typical average daily charging, operational hours and performance monitoring data for two periods Charge duration 5hrs Daily operating hours (on road) 9hrs Daily battery SOC used Daily mileage % Daily energy consumption kWh Specific energy consumption kWh per mile 42 126 66 1.91 103 1.69 Some Examples of Longer Operating Hours 7hrs 13hrs 57 174 Aim of this trial is to: • gain experience, knowledge and build confidence to plan the optimised deployment of electric buses in London • monitor performance to validate the manufacturer’s claims of an urban operating range of 250 km (156 miles) on a single charge – will this degrade over time? • evaluate the potential fuel cost savings (75% claimed) 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 14 CO2 Impacts* BYD ebus (vs 12-m Euro VI Citaro) • Average energy consumption: 1.8 kWh/mile (1.12 kWh/km) • Average specific CO2 emissions: 528 g/km Optare MetroCity (vs 10.2-m Euro V Enviro200) • Average energy consumption: 1.2 kWh/mile (0.75 kWh/km) • Average specific CO2 emissions: 352 g/km TfL Euro VI single deck diesel bus fleet average specific CO2 emissions: 938 g/km (tailpipe; WTW + c.15%) Pure electric single deck bus CO2 saving potential > 50% Preliminary data; subject to verification & audit and based on 2012 UK grid carbon intensity factor, including upstream emissions from production of fuels used in electricity generation, and for efficiency losses * during electric vehicle charging and from electricity transmission and distribution (472.4 g/kWh) 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 15 TfL’s Wireless Charging Bus Demonstration Project TfL is trialling “plug-in” series hybrid (or range-extended electric) buses Induction charging used to provide opportunity charging Infrastructure installed in TfL bus stations at either end of demonstration route Objective is to operate on grid electricity as much as possible; battery will provide a significant amount of the energy required Flexibility of hybrid power-train retained 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 16 Wireless Charging Bus Trials • Contract awarded to Alexander Dennis (ADL) • 3 new adapted Enviro400H buses are used for the trial • The buses are wireless charged range extended hybrid double deck buses in service on route 69 (11km long) Running time ~40-50 minutes Layover time up to 14 minutes TfL has set route-specific performance targets (80% use of grid electricity) 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 17 Hydrogen Fuel-Cell Vehicles • Longer term strategy – cost biggest barrier • A fleet of eight hydrogen buses • Possible extension of project up to 2020 with two additional vehicles to be introduced by 2017 • Approximately 750,000 km travelled to date • Tower Transit now undertaking all maintenance with support from Ballard and Wrightbus • Potential to run a further route of 20 buses pending funding 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 18 Emission Projections 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 19 ULEZ – TfL Buses 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 20 Summary and Conclusions Significant emissions reduction from the bus fleet has been already been demonstrated with much more planned The retrofit of ’bespoke’ exhaust aftertreatment technology to existing buses has led to substantial PM and NOx reduction The majority of new buses now entering the fleet are hybrid so even with growth in the network, CO2 is being reduced Electric and hydrogen buses offer potential to move to zero emissions policy in future 2° CONVEGNO Sistema Gomma nel Trasporto Passeggeri Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016 21 Grazie per la cortese attenzione Mike Weston Director of Buses (Transport for London) Coordinato da: Organizzato da: Roma – Ministero delle Infrastrutture e dei Trasporti, sala Emiciclo 5 - 6 maggio 2016