Cutting-edge technology Robust serial hybrid and concepts

1

Cutting-edge technology

Robust serial hybrid and concepts

Rolf HedbergProduct Manager Bus Systems

22008-10-23 LX Rolf Hedberg

Emissions from diesel engines

EURO

I

(199

3)EURO

II

(1996)

EURO

III

(2

000)EURO

IV

(2

005)

EURO

V (2

008)

EEV (o

pt. 2008)

g/kWh

Nox

CO

HC

PM

CO2

2008-10-23 LX Rolf Hedberg

32008-10-23 LX Rolf Hedberg

F-consumption, reduction potential% DRIVELINE ECO DRIVE WEIGHT RED TRAFFIC MGM HYBRIDS MODAL SHIFT

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

42008-10-23 LX Rolf Hedberg

50

45

40

35

30

25

20

1950 1960 1970 1980 1990 2000 2010

litres/100 km 1 2 3 4 5

Engine developmentAerodynamicsRolling resistanceEtc. *

Euro

’92 ’96 ’01 ’06 ’09

20200

Fuel consumption development *

HybridsHybrids

* European tractor and semitrailer combination

52008-10-23 LX Rolf Hedberg

History of Scania Hybrid R&D

1986-1989: 22 buses with Flygmotor parallel hybrid system

1995-2002: 13 buses with Thoreb series hybrid driveline

1995-2004: 4 buses with Delphi series hybrid driveline

1997-2002: Concept bus with ZF Friedrichshafen series hybrid driveline and Air Liquide fuel cell system

1999-2002: Parallel mild hybrid concept Integrated Starter generator with Siemens components

62008-10-23 LX Rolf Hedberg

Hybrid powertrain concepts

Freedom of designFreedom of power sourceStepless electrical driveExcellent brake recovery Ideal for stop-go city traffic

Easy integrationMechanical transmissionHigh efficiency and brake

recoverySuitable for cruising,

especially In hilly terrain

72008-10-23 LX Rolf Hedberg

Hybrid powertrain concepts

82008-10-23 LX Rolf Hedberg

Attractive publictransport systemInfrastructural flexibilityRenewable fuel

Scania hybrid concept

Why isn’t public transportperceived as quick, reliable,comfortable, clean or silent?

92008-10-23 LX Rolf Hedberg

High capacity hybrid city bus

Capacity as 12 m city bus Rapid passenger flow Automatic ticketing Good driver visibility

and overview

10.5 m 12 m

Focus on uptime New technical solutions

that add customer value

102008-10-23 LX Rolf Hedberg

Scania full-hybrid powertrain

Robust components and subsystems

Fuels Diesel Ethanol RME Gas …

112008-10-23 LX Rolf Hedberg

Scania hybrid concept bus

Flexible interior

Space for gas tanks

Central drivingposition

Powertrainmodule

80% standard bus parts

Energy storageElectrical AC

Fuels Diesel Ethanol RME Gas …

122008-10-23 LX Rolf Hedberg

Powertrain module

Standard dieselor ethanol engine

Heavy-duty electricgenerator

Power electronics

Heavy-duty propulsionmotor

Independent rearsuspension

Single-mounted wheels

132008-10-23 LX Rolf Hedberg

Easy manoeuvring

Short overhangsSteered rear wheelsNo swing-out

Hybrid concept

Conven-tional

142008-10-23 LX Rolf Hedberg

Flexible full-hybrid technology

152008-10-23 LX Rolf Hedberg

Welcome on-board!

162008-10-23 LX Rolf Hedberg

Welcome on-board!

172008-10-23 LX Rolf Hedberg

Welcome on-board!

182008-10-23 LX Rolf Hedberg

Welcome on-board!

192008-10-23 LX Rolf Hedberg

Concept busAcceptanceViability for production

All powertrain systemsFunctionDurabilityNoiseElectric radiation

Extensive testing

202008-10-23 LX Rolf Hedberg

Ethanol-hybrid trials 2008-2009

12 three-axle ethanol buseswith hybrid powertrain

Jointly with StockholmPublic Transport (SL)

Regular city operation

Diesel-ethanol for highefficiency

212008-10-23 LX Rolf Hedberg

Sustainable public transport

Design flexibility Rapid passenger flow Fuel flexibility

222008-10-23 LX Rolf Hedberg

Scania’s hybrid positionChoice of technology dependent on application

Half hybrid Full hybrid

Viable technology Buses and trucks Fuel flexibility25% less fuel 25% lower emissions 90% less CO2 with ethanol

232008-10-23 LX Rolf Hedberg

242008-10-23 LX Rolf Hedberg,,

,,

252008-10-23 LX Rolf Hedberg

Euro 5 and EEV ethanol engineHighly efficient diesel engine

Diesel engine with Scania EGR8.9 litres270 hp1200 Nm

Thermal efficiencyDiesel up to 44%Ethanol up to 43%

FuelEthanol with 5% ignition improver(not E85)

Technology in place since 1989600 buses sold

262008-10-23 LX Rolf Hedberg

BiofuelsPotential CO2 reduction

Ethanol < 90%from sugar cane

Synthetic diesel < 80%from biomass

Biodiesel < 70%FAME, RME, etc.

Biogas < 100%from waste, sewage

Availabletoday

272008-10-23 LX Rolf Hedberg

Future fuels and technologies

Production?Distribution?

Economicallyviable?

Hydrogen?From biomass in 10 years

DME?A possibility in 6-8 years

Batteries?Promising but expensive

Fuel cells?Beyond 2020