AUBURN HILLS, Mich., March 14 // -- Advances in
turbocharger design, manufacturing and materials are expected to boost the
growth of turbocharged gasoline direct injected engines by 30% over the next
five years, according to industry experts and BorgWarner, a leader in
"Gasoline-engine turbocharging is not focused exclusively on increasing
engine output, but also on combining exceptional engine performance with fuel
economy," said Roger Wood, President and General Manager, BorgWarner Turbo &
Emissions Systems. "These are among the most important challenges facing
automakers all over the world. BorgWarner is at the forefront of the industry
in terms of providing the technology solutions that enable our customers to
meet the challenges of improving fuel economy and engine performance. In
addition to conventional turbochargers, variable turbine geometry (VTG)
technology will play a significant role in gasoline engines."
Several automakers around the globe are exploring application
possibilities for VTG technology in gas engines. BorgWarner is leveraging its
expertise in air management technology to ensure that the company is well-
positioned to make the most of these opportunities. Worldwide, the use of
turbocharged gasoline direct injected engines is expected to grow to 2 million
engines in 2011 from about half a million in 2006. About 70% of these engines
are expected to be produced in Europe, with the rest of the production in
Japan, China and North America.
Downsized gasoline engines with VTG technology can achieve the same output
and dynamic engine response as normally aspirated engines with a larger
displacement. At the same time, these improvements are achieved with much
lower fuel consumption. Fuel savings is estimated at 15 and 20 percent
compared to a larger traditional or port injected gasoline engine without a
Until recently, VTG technology was limited to diesel engines. The
technical challenge lay in developing materials capable of withstanding the
much higher exhaust gas temperatures that are generated in gasoline engines.
In cooperation with Porsche, BorgWarner Turbo & Emissions Systems succeeded in
developing the first turbocharger with VTG technology for the Porsche 911
The key feature of the turbocharger is its adjustable guide vanes. The
innovative design means that at low engine speeds and low exhaust gas flow
rates, the vanes in a closed position develop a high boost pressure. This
pressure falls as the vanes are opened. As a result, the bypass system with
the wastegate valve that is a feature of conventional turbochargers can be
eliminated. The entire exhaust gas flow can then pass through the turbine
wheel and be immediately converted into increased boosting. This considerably
improves engine response in the lower rpm range, compared to a conventional
turbocharger with a wastegate typically used in gasoline applications.
To address the challenge of high exhaust temperature, BorgWarner used
high- temperature-resistant alloys for the VTG cartridge and vanes, materials
which are also used in aviation and space technology.
Following the successful debut of its gasoline VTG unit in the Porsche 911
Turbo, BorgWarner Turbo & Emissions Systems expects this technology to become
established on a broad number of applications over the next ten years.
BorgWarner Turbo & Emissions Systems is a leading global producer of
turbochargers and other engine air management systems for passenger cars,
light trucks and commercial vehicles. These systems are designed to improve
fuel economy, reduce emissions and enhance vehicle performance.
Auburn Hills, Michigan-based BorgWarner Inc. (NYSE: BWA) is a product
leader in highly engineered components and systems for vehicle powertrain
applications worldwide. The FORTUNE 500 company operates manufacturing and
technical facilities in 63 locations in 18 countries. Customers include Ford,
VW/Audi, DaimlerChrysler, General Motors, Toyota, Renault/Nissan, Hyundai/Kia,
Honda, BMW, Caterpillar, Navistar International, and Peugeot. The Internet
address for BorgWarner is: www.borgwarner.com.
SOURCE BorgWarner Inc.
CONTACT: David Peterson of BorgWarner Inc., +1-248-754-0883/
/Web site: www.borgwarner.com /