The Volkswagen Hybrid Strategy

Transcription

1 The Volkswagen Hybrid Strategy - Hybrid Tour with MainFirst Bank 28 th March 2006 Dr. Tobias Böhm Volkswagen AG

2 Sustainability Based Aspects in Mobility Energy Greenhouse Gases CO 2 Exhaust Emissions CO,NOx,HC,PM

3 Non-Renewable Energy Availability Source: BGR 2002 Petroleum (conventional and non conventional) Natural Gas (conventional and non conventional) Coal Reserve Resource Brown Coal Uranium >200 >1000 Years 3

4 Development of Passenger Car Emissions (Germany to 2020) kt/a Bil. km/a CO [kt/10] CO 2 [kt/100] HC [kt] NOx [kt] Particle [kt x 10] (Diesel) Distance traveled [bil. km] Source: IFEU, TREMOD 3.0 4

5 Self Commitment of EU Car Manufacturers CO 2 -Emissions [g/km] 200 new passenger car fleet 180 gasoline + diesel diesel -25% target 140 g/km

6 Key aspects Proactive Incremental Improvement of Powertrain Efficiency with Simultaneous Emission Reduction Inclusion of alternative Energy Sources in Fuel Production Development of CO 2 -neutral Vehicle Usage 6

7 New Volkswagen Powertrain Generation - TSI 7

8 New Volkswagen Powertrain Generation - TSI Reduced Fuel Consumption Downsizing Concept Double Charging Fuel consumption A-Class Benchmark Fuel consumption [l/100km] 125 kw TSI in the Golf GT Power [kw] 8

9 Volkswagen Double Clutch Transmission - DSG 9

10 Volkswagen Fuel and Powertrain Strategy Diesel, Petrol fossil TDI, FSI SynFuel GtL Hybrid, TDI, TSI SunFuel renewable BtL Bioethanol Combined Combustion System Hydrogen renewable Fuel Cell 10

11 Volkswagen and Audi Hybrid History Jahr Bild Fahrzeug Struktur V-Motor E-Motor Batterie 1991 Chico Hybrid Parallel 1-Welle Otto 2 Zyl. 25 kw ASM 9 kw NiCd NiMH 72V / 30Ah 72V / 30Ah 1991 Audi duo II Parallel 2-Achsen Otto 76 kw PSM 21 kw Pb-Gel NiCd 252V / 32Ah 252V / 47Ah 1995 Golf Hybrid TDI Parallel 1-Welle TDI Diesel 66 kw ASM 19 kw NiMH 120V / 60Ah 1996 Audi duo III Parallel 2-Wellen TDI Diesel 66 kw PSM 32 kw Pb-Vlies 264V / 38Ah Liter Auto Parallel 1-Welle DI-Diesel 6,3 kw PSM 2 kw NiMH 180V / 6,5Ah 2003 Bora Hybrid TDI Parallel 1-Welle TDI Diesel 55 kw ASM / PSM 25 kw NiMH 288V / 6,5Ah 2004 Golf Hybrid TDI Parallel 1-Welle TDI Diesel 85 kw PSM 15 kw NiMH 144V / 6,5Ah 11

12 Efficiency: Demonstrating the feasibility VW 1-Litre Car 0.3 l SDI 1cyl. 6,3 kw (8,6 HP) 0,99 l/100 km = 235 mpg Euro 4 limits 12

13 Project targets development of an optimized powertrain for our mass production cars Volkswagen Golf and Passat and their derivatives => optimized combustion engine => hybridization => new gearbox technologies => new control concepts no car optimization (weight, air resistance and rolling resistance like series car) no performance disadvantages power: ~ kw top speed: > 190 km/h km/h: ~ 11 s 13

14 Powertrain 1.4 l - 85 kw - TDI - engine DC DC 15 kw - electric motor & engine clutch 144 V NiMH battery 12 V dual clutch transmission 14

15 Electric motor and engine clutch electric motor crankshaft engine clutch maximum power 15 kw maximum torque 130 Nm length 85 mm outer diameter 285 mm clutch torque > 1000 Nm 15

16 Transmission technology dual clutch transmission electro-hydraulic actuators 16

17 Battery technology NiMH-battery maximum power V weight < 35 kg 17

18 Energy management function based energy management depending on state of charge power / moment / current (schematic) P_max_char. charge/ generator mode discharge / motor mode P_max_dcha r. 0 % start load leveling dyn. power limits hysteresis boost_short sync_down recuperation sync_up electr. driving boost function limit adaptation 100 % state of charge 18

19 Software architecture environment and driver detection environment driver detection detection topology factors function energy wheel torque management management strategy actual values central torque manager operative software desired values, function flags shifting starting procedures procedures actual torque, torque prediction torque control sources & sinks engine control Tengine motor control Tmotor shifting strategy clutch control TC0 desired torque clutch control TC1 clutch control TC2 19 strategic software sportiness factor

20 Torque addition 300 torque limitation Torque [Nm] torque 1.9 l TDI torque 1.4 l TDI torque 1.4 l TDI + electric motor Engine rpm [1/min] 20

21 Concept features potential of hybridization start / stop - function: ~ 5 % recuperation (electric braking): ~ 5 % electric driving: ~ 5 % additional potentials: downsizing / supercharging: ~ 6 % gearbox technology: ~ 4 % overall results: optimization of fuel efficiency: ~ 25 % fuel consumption (NEDC): ~ 3.8 l / 100 km 62 mpg 21

22 Golf TDI Hybrid at Challenge Bibendum 22

23 Fullhybrid - Powertrain Concept 1.4 l - TSI engine DC DC 20 kw - electric motor & engine clutch 187 V NiMH traction battery 12 V DSG-gearbox (dry clutches) 23

24 Volkswagen Mild Hybrid Pel. < 15 kw 80 Nm U < 60 V DLC+PbA - storage 24

25 Parallel-Hybrid s from Volkswagen <= 1L-car (TDI-Hybrid) <= Golf TDI Hybrid Touran TSI Hybrid 25

26 Thank you for your attention! 26