AUBURN HILLS, Mich.,
Feb. 18, 2020 /PRNewswire/
-- BorgWarner's twin scroll turbochargers featuring enhanced
high temperature performance thanks to the use of sophisticated
steel alloys, are being delivered to the BMW Group for its new
3.0-liter inline six-cylinder gasoline engine. Used across a wide
range of BMW passenger cars, the engine has two performance options
– medium and high – and delivers 250 to 280 kW of power and 500 to
550 Nm of torque.
"Twin scroll technology produces results similar to twin turbo
applications but in a smaller package with reduced weight and
cost," said Joe Fadool, President
and General Manager, BorgWarner Emissions, Thermal and Turbo
Systems. "We are delighted to have worked with BMW to develop and
deliver these latest designs, which use advanced high-temperature
alloys and casting technologies that allow our customer to develop
a low-emissions engine that combines comfortable driving with
excellent performance and an agile response at low engine speeds.
With this project successfully completed, a large number of BMW
passenger cars are expected to be equipped with BorgWarner
turbochargers into the future."
When using a BorgWarner twin scroll turbocharger for a
six-cylinder engine, the ducts serve three cylinders at a time and
are separated in both the exhaust manifold and turbocharger. This
strategy prevents pulsating exhaust gases from interfering with
each other as they are directed through two separate spiral
chambers, or scrolls, in the turbocharger. Individual nozzles – one
smaller and sharper for better low-end response and the other
larger and less angled for high output requirements – are directed
at the turbine. Compared with a single scroll turbocharger, a twin
scroll design recovers more energy from the exhaust gases,
minimizes parasitic back losses and improves responsiveness at low
engine speeds.
BorgWarner's major innovations for the turbocharger center on
the use of sophisticated high-temperature-resistant materials that
enable elevated combustion temperatures to be used. This results in
a superior fuel-air combustion conversion and cleaner exhaust gases
that support BMW's high-efficiency emission control system.
While using top-quality materials such as high-alloyed steel and
castings, BorgWarner was able to provide an extremely economical
solution for the customer by developing manufacturing processes
that led to weight reduction.
About BorgWarner
BorgWarner Inc. (NYSE: BWA) is a
global product leader in clean and efficient technology solutions
for combustion, hybrid and electric vehicles. With manufacturing
and technical facilities in 67 locations in 19 countries, the
company employs approximately 29,000 worldwide. For more
information, please visit borgwarner.com.
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SOURCE BorgWarner