VW developing 10-speed transmission to save fuel

Volkswagen is developing a 10-speed dual-clutch transmission to help reduce fuel consumption in its vehicles, CEO Martin Winterkorn said.

The transmission is one of a number of drivetrain technologies that the automaker is focusing on for the mid- and long term, he said. Others include plug-in hybrids and a high performance diesel engine.

"Among the alternative drive systems plug-in hybrids in particular offer great potential," Winterkorn said at the Vienna Motor Symposium on Friday.

He gave no time frame for the new technologies.

Automakers and suppliers have increased development into multiple-speed transmissions as regulators in the EU and the United States call for greater fuel economy from new vehicles.

Ford Motor and General Motors are collaborating on 9- and 10-speed automatic transmissions for use in rear-wheel-drive and front-wheel-drive applications in cars, SUVs and trucks. The automakers already have a jointly developed 6-speed transmission.

Land Rover will introduce a nine-speed automatic transmission in the Range Rover Evoque later this year. ZF Friedrichshafen developed the transmission for front-drive, transverse applications. As well being good for economy, the transmission has a low first gear to help with towing. "It works well in place of a low-ratio gearbox," Craig Carter, vehicle engineering manager at Land Rover, told Automotive News Europe recently.

The same transmission will also be fitted to the new Jeep Cherokee. Jeep parent Chrysler will build the transmission at its Kokomo, Indiana, factory.

Hyundai Motor is working on a 10-speed transmission for luxury models for Hyundai and Kia with a launch date of 2014.

PRESS RELEASE

Volkswagen presents future drive systems at Vienna symposium

Vienna/Wolfsburg, 26 April 2013: Today at the 34th 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 focussed on by Volkswagen include the development of a high-performance diesel engine delivering 100kW per litre of displacement and a new 10-speed dual clutch gearbox that reduces fuel consumption. Among the alternative drive systems plug-in hybrids in particular offer great potential.

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 95g of CO2/km by 2020.

Winterkorn emphasised that existing internal combustion engines still offer a lot of potential: 'Since the year 2000, we've reduced the fuel consumption of our TDI and TSI engines by more than 30 per cent. I'm convinced that by 2020 we can achieve further increases in efficiency of around 15 per cent.'

Factors making this possible, he said, would include enhancement of the combustion process, intelligent lightweight design, innovative operating strategies and optimisation of friction levels and thermal management.

Volkswagen also sees great potential for natural gas drive systems: 'The gas engine is environmentally friendly, economical and suitable for everyday use. The technology is fully developed and the vehicles are already on the market.' The best example is the new eco-up! - at 79g of CO2/km the world's most economical natural gas car. The Volkswagen Group will be systematically rolling out natural gas technology with the Golf TGI BlueMotion and the Audi A3 g-tron. Winterkorn: '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.'

The variety of drive system technologies is growing: 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,' added Winterkorn.

In the medium term the first choice in terms of alternative drive systems is plug-in hybrid technology. This enables a purely electric range of up to 50 kilometres, a high level of suitability for everyday use by virtue of recharging from a socket at home and also complete flexibility for long journeys thanks to an efficient internal combustion engine. 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 many other models, such as the Passat, Audi A6 and Porsche Cayenne.

Volkswagen also presented at the symposium new technologies that are finding their way into the modular diesel component system's future engine generation. These high-performance diesel engines achieve peak power output of 100kW per litre of displacement and have a variable valve-train assembly, a high-pressure injection system at up to 3,000 bar and combined charging with the innovative e-booster.

(VW plans fuel-saving 10-speed transmission originally appeared on Automotive News, sub. req.)

By Nick Gibbs- Automotive News