AUBURN HILLS, Mich.,
Jan. 17, 2012 /PRNewswire/
-- BorgWarner's award-winning regulated two-stage (R2S®)
turbocharging technology boosts performance while helping improve
fuel efficiency and lower emissions for the first four-cylinder
engine in the history of the Mercedes S-Class. The 2.2-liter diesel
S 250 CDI BlueEFFICIENCY is the first car in the luxury segment to
consume less than 6 liters of fuel per 100 km.
(Photo:
http://photos.prnewswire.com/prnh/20120117/DE36400 )
"BorgWarner's highly efficient turbocharging technology meets
the highest demands in performance, fuel economy and emissions,"
said Frederic Lissalde, President and General Manager, BorgWarner
Turbo Systems Passenger Car Products. "We are pleased to
collaborate with Mercedes-Benz to set new benchmarks for powerful
downsized diesel engines in the luxury segment without compromising
performance."
To develop a state-of-the-art engine featuring low-end torque,
responsiveness, high output and low emissions, Mercedes-Benz chose
BorgWarner's regulated two-stage turbocharging system for the new
four-cylinder diesel engine. The compact R2S system consists of one
small KP39 high-pressure exhaust gas turbocharger and one large K04
low-pressure exhaust gas turbocharger. The high-pressure turbine is
first driven by the exhaust gas, revolving at up to
215,000 rpm. BorgWarner engineers integrated a bypass into the
high-pressure turbine casting which allows the turbines to be
controlled based on engine speed and generate optimum boost
pressure over the entire engine speed range with excellent torque
characteristics. The R2S turbocharging technology fulfills the
requirements of state-of-the-art engine concepts, allowing maximum
exhaust gas recirculation rates even under full load conditions
while significantly reducing NOx emissions.
While still offering excellent dynamics, the engine provides its
maximum torque from just 1,600 rpm in the S 250 CDI and
achieves a fuel consumption rating of only 5.7 liters per 100
kilometers (41 mpg). This equates to CO2 emissions of 149 g/km (240
grams/mile).
About BorgWarner
Auburn Hills, Michigan-based
BorgWarner Inc. (NYSE: BWA) is a technology leader in highly
engineered components and systems for powertrain applications
worldwide. Operating manufacturing and technical facilities in 59
locations in 19 countries, the company develops products to improve
fuel economy, reduce emissions and enhance performance. Customers
include VW/Audi, Ford, Toyota, Renault/Nissan, General Motors,
Hyundai/Kia, Daimler, Chrysler, Fiat, BMW, Honda, John Deere, PSA,
and MAN. For more information, please visit www.borgwarner.com.
SOURCE BorgWarner Inc.