Stadtbusse in der Beschaffung/ Procuring Clean Buses 11. Dezember 2013 - Bremen 1 The role of urban buses in the concepts of sustainable mobility, climate protection, air quality improvement and noise reduction Falk Heinen Section Transport and Environment, Electric Mobility (IG I 5) 13. Februar 2012
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Falk Heinen Section Transport and Environment, Electric Mobility (IG I 5) 13. Februar 2012
The role of urban buses in the concepts of sustainable mobility, climate protection, air quality improvement and noise reduction. Falk Heinen Section Transport and Environment, Electric Mobility (IG I 5) 13. Februar 2012. 1. Overview. Challenges: Climate and Transport, Air quality, Noise - PowerPoint PPT Presentation
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Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
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The role of urban buses in the concepts of sustainable mobility, climate protection, air quality improvement and noise reduction
Falk Heinen
Section Transport and Environment, Electric Mobility (IG I 5)
13. Februar 2012
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Challenges: Climate and Transport, Air quality, Noise
Sustainability concepts for transport
New buses in public transport
Hybrid bus projects
E-buses
Ongoing activities/ situation in Germany
Results on research of new bus concepts and projects- availability- fuel consumption- emissions/ noise
Overview
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Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
First Global Reconstruction of Temperature for Past 11.300 years
the Past 11 300 Years
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Source:Marcott et al. Science 2013,aus: Schellnhuber, Klimakongress,2013
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
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Which reduction of GHG for 2-degrees-target?
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
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Calculations: McKinsey for BMU, 2010
Remark: -50% is lower “Safety line” for 2 degrees target
• All sectors with reductions except transport sector, e. g. Germany reduction of all sectors by 30 % between 1990 and 2010; transport: reduction only 9,8 %.
• Reductions for 2°C-target needs in-sector achievements, i. e. no shift of obligations between sectors
• Targets for Transport Sector in Germany: Reduction Final Energy Consumption by 10 % (2020) and 40 % (2050); discussion about national sectoral targets
• Transport EU: Reduction of CO2-emissions by 60 % compared to 1990 until 2050 (Concept Text Transport)
• Energy EU: Minimum share of 10 % renewable Energy in the Transport Sector until 2020
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
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Notification of 57 air quality zones according to Art. 22
COM Decision 20 February 2013:33 cases denied (limit value will not be attained in 2015)17 allowed7 allowed on conditions (submission of final air quality plans)
Postponement of the attainment deadline for NO2
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
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total emissionstransport demand
[passenger km]
energy intensity
[joule per pkm]
CO2-intensity
[CO2e per joule]= x x
approachesAvoid traffice.g. reduce needs for mobility and distancesby means ofintegratedplanning
Switch fuele.g. use lowcarbon fuels such assustainablebiofuels orrenewableelectricity
Source: Composition of total emissions in passenger transport, simplified display after Creutzig/Edenhofer in IVW
Hybrid buses Electric buses
How to reduce emissionsin passenger transport?
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Stand: Dezember 2007
Instruments of sustainable mobility
Emission standards - Land transport EURO-standards - Environmental zonesReduction of transport noise- Innovation programmes for rail vehicles- EU-standards for tyres- International Noise standards for airplanes - Requirements of BImSchG (e. g. noise action plans)Taxes as environmental steering instrument- Reduction of fuel taxation for public transport- Benefits for refit with particulate filter- Tax exemptions for fuels with significat reductions of CO2 emissions
Support/ funding of environmental beneficial vehicles
New version of national transport plan (in preparation)
Environmental standards for public procurement in public transport
National cycling plan
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
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Key reasons for funding „better buses“
Main goalsReduction of CO2-emission, pollutants and noise within the sector of public transport
Support of Market penetration with existing, highly efficient transport technologies
Establishing new technology with lower emissions as permanent element in the fleet of transport companies
Stimulation of economy for bus industry and related suppliers
Increase attractiveness of Public Transport
Noise measurement (source: BMU)
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
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What are „better buses“?
Main elements – different stagesReduction of air pollutants, mainly NOx and PM: today SCR, particulate filter
Gas buses?: 1. CNG: no real CO2-benefit2. lower NOx/ PM emission3. Biogas: CO2-benefit dependent on well-to-wheel balance, waste problem, competition with food4. Noise problems remain
Hybrid buses: efficiency technology, introduces electric mobility to public transport
Electric buses: various technologies available, test phase, main challenges: battery and charging
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
BMU project 2010/ 11
12 companies:
– Stadtverkehr Lübeck GmbH
– Üstra Hannoversche Verkehrsbetriebe AG
– 10 transport companies in Saxony
Introduction of 50 hybrid buses in scheduled service
65 – 85 % of extra costs for hybrid elements and support
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Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Environmental criteria BMU project
Definition of ambitious environmental criteria in order to promote market entry and to save environmental standards:
– Reduction of CO2-Emissionen by 20 % compared to equivalent dieselbus
– NOX- and PM-emissions at EEV level
– Exhaust aftertreatment with closed particulate filter– Underscore EU-noise level
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Control of criteria with extensive research program: noise measurements on testing area, control of emissions on roller test bench, extensive additional analyses on practicability, technical problems, cost-benefit, acceptance
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Continuation of support of hybrid buses
As of 2012 new project with financial support of the BMU-National Climate initiative (NKI)
Huge political support for promotion of new climate friendly technologies
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Technical evaluationPerformance and time of operation
Collection data of 57 Hybridbussen
Performance
Sum: 1,3 Mio. km
Performance per vehicle: 6.700 – 29.800 km, (Ø ca. 22.200 km)
Average daily performance: 229 km
Time of operation
overall: 77.000 hours
Daily average: 15,3 h
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Source: PE International, AG Bus
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Availability Hybrid vs. Diesel
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Period: Jan - September 2013
Com
p. 1
Com
p. 2
Com
p. 3
Com
p. 4
Com
p. 5
Hyb
rid
Die
sel
79% 77%69% 70% 64%
92%98%100%
71% 77%
Average availability BMU project (2011/ 2012:
Hybrid buses: 81%Reference buses: 92%
Hybrid elements: availability 93 %
Lower availability in cold months January/ February
Increased availability over period; nearly equal to conventional buses
Source: PE International, AG Bus
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Fuel consumption: first results
Comparison with comparable conventional diesel vehicles (Euro V/EEV)
BMU-Projekt - 12 projects with fuel savings of up to 19% (average > 10 %)- dependency on route characteristics, technology, energy
storage, manufacturer (some at the beginning with extra fuel consumption)- variations over the year: better results over summer
WG buses (only few months, statistical uncertainties)- 12 m: up to 34 %, 18 m: up to 21 % (some below 10 %)- average between 10 and 20 % currently- parallel hybrids significantly better, robust results over 20 %- first companies expect break-even during lifetime (!)- complete restart of cost-benefit analysis
-> FURTHER DETAILED ANALYSIS NECESSARY
2122.04.23
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Test bench measurements/ noise
All buses within BMU project achieved requirements for NOx/ PM (PM below detection limit)
Exhaust temperature higher than concv. Engines (SCR)
CO2 reductions between 20 and 30 %
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Gelenkbus auf dem Rollenprüfstand (Diesel-Referenz), (Quelle: TÜV NORD)
Geräuschmessung auf der ISO-Messstrecke in Papenburg (Quelle: TÜV NORD)
Significant reductions of noise in particular in front part of the bus
Perception of passengers and among pedestrians: much lower noise, very important element of acceptability
Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen
Some conclusions
Significant GHG reductions in transport sector required to achieve 2°-target
Other important requirements: air quality and noise reduction
Public transport one important element but further improvement of technology necessary
Technological evolution started and is accelerating: more electricity (with all suboptions) and less conventional fuel.
Hybrid buses as new element in German and European fleets introduced
Various projects on different paths: hybrid buses, plug-in hybrid buses and electric buses
E-buses as new element with main challenges „battery“, „charging“ and „costs“
High acceptance of new technologies among passengers and pedestrians, but also drivers
New bus trends lead to more sustainability: less emissions, less noise
Economic questions/ cost effectiveness will remain as one key issue
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Stadtbusse in der Beschaffung/ Procuring Clean Buses11. Dezember 2013 - Bremen