AUBURN HILLS, Mich.,
Sept. 6, 2018 /PRNewswire/
-- BorgWarner has developed a dual volute turbocharger
specifically engineered for gasoline engines in light-duty vehicles
with aggressive transient response targets. The company's new
turbocharger delivers a noticeably quicker engine response time
when accelerating from low speeds. The dual volute geometry allows
for the complete segregation of engine exhaust pulsations so more
exhaust energy is available to the turbine wheel, compared with
traditional twin-scroll turbochargers. Adding to BorgWarner's
extensive portfolio of engine boosting products, the dual volute
turbocharger is a new performance solution for gasoline-powered
light-duty vehicles to help Original Equipment Manufacturers (OEMs)
accomplish their individual goals.
![BorgWarner’s dual volute turbocharger is a new performance solution for gasoline-powered light-duty vehicles to help Original Equipment Manufacturers (OEMs) accomplish their individual goals. BorgWarner’s dual volute turbocharger is a new performance solution for gasoline-powered light-duty vehicles to help Original Equipment Manufacturers (OEMs) accomplish their individual goals.](https://mma.prnewswire.com/media/740442/BorgWarner_dual_volute_turbocharger.jpg)
"BorgWarner's unrivaled history and expertise in creating
advanced engine boosting technologies enable us to take a system
approach in technology development as well as support our customers
in choosing the right turbocharging solution," said Robin Kendrick, President and General Manager,
BorgWarner Turbo Systems. "Our engineering team recognized that a
dual volute turbocharger could provide quicker engine response
times for light-duty vehicles that require superior transient
behavior. We are excited to bring this new solution to the
market."
A turbocharger, made of a turbine and compressor, works by
harnessing normally-wasted energy in the high-temperature,
high-pressure exhaust flow from the engine, and then converts that
energy into compressed or "boosted" air to feed the engine. The
dual volute turbine stage directs exhaust flow through two separate
volutes (circumferential passages) of the turbine housing, each of
which feed exhaust pulsations directly into one half of the turbine
wheel.
Traditional twin-scroll turbochargers maintain separation of the
exhaust flow to the turbine wheel by adding a divider wall to the
turbine housing, creating a "side-by-side" arrangement of the
exhaust flow passages. However, these designs require the exhaust
flow from the two passages to enter a smaller common flow channel
just before entering the turbine wheel. The common channel allows
some leakage of the exhaust flow and pulsation energy between the
two sides, which results as a loss of energy available to the
turbine wheel.
By eliminating this common flow channel and fully separating the
flow passages, BorgWarner's dual volute turbine stage is able to
capture more exhaust pulsation energy than twin-scroll turbines. At
low engine speeds, where there are longer periods of time between
exhaust pulses and exhaust flow is more variable, the ability to
harness the pulsation energy from the engine represents a
significant increase in energy available to drive the turbine wheel
as compared to the exhaust flow energy alone. This increase in
turbine energy utilization at low engine speeds is a key to
providing superior turbocharger boost response and meeting quick
engine response targets in modern turbocharged engines.
Until BorgWarner's new solution, dual volute turbochargers were
used with diesel engines in commercial vehicles on a limited basis.
BorgWarner began developing this new generation of dual volute
turbocharging technologies for gasoline engines in 2012 and is now
in production with an OEM on a full-size pickup truck – its first
dual volute turbocharger for the light-duty vehicle market. The
company supplies engine boosting technologies from its
comprehensive and growing portfolio to nearly every OEM worldwide.
A leader in clean and efficient propulsion solutions for
combustion, hybrid and electric vehicles, BorgWarner also designs
its products to comply with increasingly stringent global emissions
regulations.
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
66 locations in 18 countries, the company employs approximately
29,000 worldwide. For more information, please visit
borgwarner.com.
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SOURCE BorgWarner