Mercedes-Benz Citaro Fully Electric City Bus Gustav Tuschen Head of Product Engineering Daimler Buses
Looking forward to the year 2030 A vision? Share of electric buses about 75 percent Quiet and locally emission free Operation range 400 Kilometers Electric power from renewable energy Mercedes-Benz Citaro Fully Electric City Bus 2
Two-pillar strategy for tomorrow s drivetrains Significant improvement in emissions nearly emission free Benchmark in CO 2 & TCO for city bus traffic emission free Zero emission driving for city bus traffic 2018: Citaro up to 8.5 % CO 2 reduction Conventional measures and mild hybrid technology 2018: Fully electric Citaro TCO = Total Cost of Ownership Mercedes-Benz Citaro Fully Electric City Bus 3
CO 2 emissions NO x [g/kwh] particle emissions Mercedes-Benz Citaro Euro VI Significant improvement in emissions within a few years CO 2 emissions* NO x emissions* PM emissions* far below limits -18% -83% -98% Euro V/EEV Citaro hybrid Euro V/EEV Citaro hybrid Euro VI Euro VI Euro V/EEV Citaro hybrid Euro VI Euro VI emission values verified with real driving emission (RDE) measurement in Berlin * heavy city cycle: values in %, Euro V/EEV as reference Mercedes-Benz Citaro Fully Electric City Bus 4
Two-pillar strategy for tomorrow s drivetrains Significant improvement in emissions nearly emission free Benchmark in CO 2 & TCO for city bus traffic emission free Zero emission driving for city bus traffic 2018: Citaro up to 8.5 % CO 2 reduction Conventional measures and mild hybrid technology 2018: Fully electric Citaro TCO = Total Cost of Ownership Mercedes-Benz Citaro Fully Electric City Bus 5
Electric Citaro based on current Citaro platform Fully-electric solo & articulated vehicles Technical concept: Take-over of existing Citaro interior Electric rear axle Modular high voltage battery clusters (HVB) Pantograph or rail system for opportunity charging on the roof as option Electric Citaro (12 m, 19.5 t) * HVB = high voltage battery Mercedes-Benz Citaro Fully Electric City Bus 6
Key technologies perfectly synchronized Setup on a modular concept with intensively tested components High voltage battery system Modular battery system max. 10 HVB blocks (solo vehicle) E-Drive system Low floor electric axle 11.000 Nm torque @ wheel Option High power conductive charging with pantograph Electric charging system Plug In (series) DC charging Type Combo 2** Heating and climatization CO 2 air conditioning Heat pump * HVB = high voltage battery ** International Standard: Combined Charging System (CCS) Mercedes-Benz Citaro Fully Electric City Bus 7
Customer requirements regarding electric buses A complete and functioning system Public transport base conditions (energy required) Energy management vehicle (energy efficiency) emobility Consulting = Competitive emobility system Battery strategy (energy capacity) Operation strategy (energy supply) Mercedes-Benz Citaro Fully Electric City Bus 8
Particular focus on energy efficiency Best-possible use of available battery capacity Public transport base conditions (energy required) Energy management vehicle (energy efficiency) emobility = Consulting Competitive emobility system Battery strategy (energy capacity) Operation strategy (energy supply) Mercedes-Benz Citaro Fully Electric City Bus 9
Particular focus on energy efficiency Best-possible use of available battery capacity Public transport base conditions (energy required) Energy management vehicle (energy efficiency) emobility Consulting = Competitive emobility system Battery strategy (energy capacity) Operation strategy (energy supply) Mercedes-Benz Citaro Fully Electric City Bus 10
Modular layout of the high voltage batteries (HVB) setup in blocks One Citaro HVB block contains 15 modules, in total 180 cells 1 High energy density cells 2 12 cells grouped to a module 3 15 modules grouped in block Mercedes-Benz Citaro Fully Electric City Bus 11
Battery energy content EvoBus battery strategy follows future technology development Progress in battery development will be integrated in electric Citaro step by step 243 kwh 2016 2018 ff same pack design upgrade possible! Mercedes-Benz Citaro Fully Electric City Bus 12
Particular focus on energy efficiency Best-possible use of available battery capacity Public transport base conditions (energy required) Energy management vehicle (energy efficiency) emobility Consulting = Competitive emobility system Battery strategy (energy capacity) Operation strategy (energy supply) Mercedes-Benz Citaro Fully Electric City Bus 13
KWh/km Significant reduction in energy consumption for electric Citaro Improvement in energy efficiency (Sort 2, 200 km) 3,0 2,5 2,0 1,5 1,0 2.8 kwh/km 2.0 kwh/km heating cooling neutral* cooling2 heating2 neutral*3 0,5 2016 2017 2018 2019 2020 2021 2022 2023 * neutral = driving basic load Mercedes-Benz Citaro Fully Electric City Bus 14
Challenge level of maturity Comprehensive testing like all Mercedes-Benz buses Tested to the full extent for reliability in daily operation Components tested on test benches and in practice Winter testing at temperatures below 15 C at the polar circle Summer testing in the heat at 30 C in Spain and steep hills in the Sierra Nevada In addition: Charging systems tested and evaluated Mercedes-Benz Citaro Fully Electric City Bus 15
Application of innovative technologies for maximum efficiency Top features of the electric Citaro Improved efficiency with new technologies Local emission free driving High passenger capacity Emission free vehicle conditioning (in depot) Mercedes-Benz Citaro Fully Electric City Bus 16
The new fully electric Citaro Flexible and tailor-made for customer applications Flexibility for the customer for individually matched performance spectrum Battery capacity High performance charging technology Standardized components for stable and mature technology Drivetrain technology Charging technology Climatization Mercedes-Benz Citaro Fully Electric City Bus 17
Thank you for your attention! Mercedes-Benz Citaro Fully Electric City Bus 18