Future Automotive Power-trains Does hybridization enable vehicles to meet the challenge of sustainable development?

Transcription

1 UK-JAPAN Automotive Technology Forum: LONDON, 1-4 DECEMBER /15 Future Automotive Power-trains Does hybridization enable vehicles to meet the challenge of sustainable development? Dec. 2, 2003 Toyota Motor Corporation Takehisa Yaegashi

2 Challenges for the Automotive Industry 2 Realize Sustainable Development Environment Energy Safety Traffic Global Warming/Air Pollutio Diversified Energy Sources Traffic Accidents, Security Traffic Congestion, ITS

3 Challenge for Future Environmental Vehicles NOx Emission 3/ 1.0 1/3 Current Gasoline (EURO4 0.08g/km ) Hybrid Hybrid Future Clean Diesel Toyota D-CAT New Prius (US SULEV ) Hybrid Hybrid Future Target ( 20X0) Zero Emission Hydrogen Society? Gasoline Trend (EURO 5) Future Technology Current Clean Diesel Global Holdings (Milion Vehicles) (EURO4 0.25) Conventional Diesel (EURO3 0.50g/km) Diesel Trend Forecast of Global Automobile Holdings

4 Toyota s s Environmental Initiatives 4 Diesel Toyota D-CAT(with low sulfur fuel) Hybridization (Future) Gasoline Direct Injection/VVTi Hybridization Cost; needs societal support FCHV Hybridization Cost; hard to achieve target cost 1998 Prius 2003 Avensis with D-CATD 2004 New Prius

5 The Ultimate Eco Car 5/ ity Scale Clean Air Disposal CNG Alternative Fuel THSII THS FCHV Hybrid Technology Toyota D-CATD CR TDI Diesel Engine D-4 Lean Burn VVT-i Petrol Engine Global Scale EV Global Warm Energy Reso Electric Vehicle

6 Toyota Hybrid Vehicle World Sales 6 Cumulative volume of Toyota hybrid vehicle sales Crown New Prius Estima Alphard Prius rius Prius Estima Crown Alphard Prius

7 Hybrid Functional Categories 7 Application of Hybrid Tec. Low Voltage 60V Crown Mild Hybrid High Voltage Honda Insight Honda Civic Mid Size Truck Motor Assist Prius Estima HVH Alphard H EV Drive Toyota Vitz Regeneration Brake Stop & Go (Engine Stop) Low V Mild High V Mild Full/Strong

8 ew Prius with new Generation Hybrid System (THS Fuel economy Existing hybrid vehicle Hybrid Synergy Drive Improvement of conventional engines Fun to drive

9 Outline of THSII Technology SII Power-train Voltage Booster THSII Transmission 1. High voltage motor & generator 2. High power motor (33kw ->50kw) 3. Rev-up generator (6,500rpm to 10,000rpm) 4. High Power Density Ni-MH Battery HSII Power Control Unit THSII Ni-MH Battery THSII ECB 5. Evolution of Power Management

10 Evolution of Driving Performance 1 Passing Acceleration:50-80km/h (sec) L CVT km/h 16

11 CO 2 Data of Latest Models 1 CO 2 g/km Gasoline Diesel 140g/km 2008/9 119g/km 2000Prius 104g/km New Prius IW class kg

12 New PRIUS Fuel Economy 1 Japanese PRIUS 01 PRIUS 35.5km/l L4 1.5L 4AT Corolla 29.0km/l 16.6km/l (in house) Japan 4 season FE Cold start/ac on ( in house) Japan Traffic jam mode US Comb. Label adjusted EU mode L4 2.4L 4AT Camry L4 1.8L 4AT Avensis 55mpg (23.3km/l) 48mpg (20.3km/l) 4.3L/100km (23.3km/l) 5.1L/100km (19.6km/l) 26mpg (11.0km/l) 7.8L/100km (12.8km/l) Fuel Consumption ( L/100km )

13 Conv. Gasoline 98 Prius 01 Prius HSD New Prius 03 FCHV FCHV future W to T (%) Well to Wheel total efficiency T to W (%) Improvement Rate(%) 01 04HSD Total Efficiency(%) % 25% HV Control 28% 32% 29% 22% Others 13% 42% Engine 6% MG 10 % 10 % Regeneration 39% 1 (Toyota Data: mode

14 Total CO2 in an Automobile's Lifecycle 14 Disposal Material manufacturing (13%) Vehicles manufacturing Fuel manufacturing (9%) Driving(70%) Fuel Manufacturing (40%) Disposal Material manufactur (42%) Vehicles manufactur (15%) 1.0 CO2 emissions Less than 1/3 Petrol Diesel Petrol HV FCHV Future Challenge

15 Conclusion 15 Hybridization allows the ICE vehicles to stay competitive in the future, by enabling total energy efficiency that is comparable to future FCHV. Before we rush into the hydrogen society by hydrogen fueled FCHV, there should be an option for ICE vehicles to spare fossil fuel with ultimately efficient and low CO2 technology. In long term, it is necessary for FCHV to adopt evolved and matured hybrid technologies. The hybrid technologies is the core in the coming future automobile.