Winterkorn says Volkswagen developing 10-speed DCT and high-performance diesel; plug-in hybrids offer great potential
|Volkswagen’s view of powertrain technologies to minimize greenhouse gas emissions. Source: Prof. Dr. Jürgen Leohold, Executive Director Volkswagen Group Research. Click to enlarge.|
At the International Vienna Motor Symposium Prof. Dr. Martin Winterkorn, Chairman of the Board of Management of Volkswagen AG, gave a forecast of future drive system technologies. Areas of work being focused on by Volkswagen include the development of a high-performance diesel engine delivering 100 kW (134 hp) per liter of displacement and a new 10-speed dual clutch gearbox that reduces fuel consumption.
The high performance diesel engine features a variable valve-train assembly, a high-pressure injection system at up to 3,000 bar and combined charging with an innovative e-booster. Among alternative drive systems, plug-in hybrids in particular offer great potential, Winterkorn said. (The Volkswagen Group intends to launch at least 6 new plug-in hybrid models starting in 2014 and beyond. Earlier post.)
Winterkorn stressed that over the medium- and long-term, different drive system technologies would exist side by side. These would range from highly efficient internal combustion engines and natural gas systems all the way to hybrids and electric vehicles. On this basis the Volkswagen Group was working towards its declared objective of lowering the European new car fleet’s CO2 emission level to 95 g of CO2/km by 2020. (Earlier post.)
Since 2000, the group has reduced the fuel consumption of its TDI and TSI engines by more than 30%. Winterkorn said that he expects that by 2020, Volkswagen can achieve further increases in the efficiency of internal combustion engines by around 15%.
|Short-term engine roadmaps|
|At the CAR Management Briefing seminars in Traverse City last year, Oliver Schmidt, General Manager, Engineering and Environmental Office (EEO) Volkswagen Group of America, outlined the roadmap for the three major Volkswagen engine lines currently in production: the EA 211 gasoline engines (1.0l to 1.6l); the EA 888 Gen3 gasoline engines (1.8l to 2.0l); and the EA 288 MDB Diesel engines.|
|For the EA 288 diesels, main development modules include exhaust aftertreatment close to engine; modular EGR system; optimized powertrain; indirect air cooling; innovative thermal management; and an intelligent control systems engine control unit.|
|In addition to lowering fuel consumption, CO2 emissions and emissions of criteria pollutants, Volkswagen is striving to standardize mounting orientation, to realize a compact architecture to enable short overhang in the vehicles, and to reduce engine weight by up to 30%.|
Factors making this possible, he said, would include enhancement of the combustion process, intelligent lightweight design, innovative operating strategies and optimization of friction levels and thermal management.
Volkswagen also sees great potential for natural gas drive systems. The Volkswagen Group will be systematically rolling out natural gas technology with the Golf TGI BlueMotion and the Audi A3 g-tron.
We need to make the public even more aware of the benefits of natural gas engines. Everyone needs to play their part in this: carmakers, politicians and the fuel industry.—Martin Winterkorn
The group-wide Volkswagen modular component system and its flexible architecture enable every kind of drive system to be integrated quickly into the new models.
Over the coming years we will electrify all vehicle classes in this way and help electrically powered motoring to make the breakthrough.—Martin Winterkorn
In the medium term the first choice in terms of alternative drive systems is plug-in hybrid technology. The Volkswagen Group’s first plug-in hybrids, the Porsche Panamera and Audi A3 e-tron, will shortly be going into full production. They will be followed by the Golf and other models, such as the Passat, Audi A6 and Porsche Cayenne.