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BorgWarner's R2S(R) Turbochargers Boost Performance and Fuel Economy for New Volvo D5 Diesel Engine

Posted on: Tuesday, 17 March 2009, 07:30 CDT

For Volvo's S80 Luxury Sedan, BorgWarner's Turbo Technology Creates a Dynamic Driving Experience with the Added Pleasure of Passing the Pump

AUBURN HILLS, Mich., March 17 /PRNewswire-FirstCall/ -- BorgWarner's regulated two-stage (R2S(R)) turbocharging system enhances performance and improves the fuel economy of Volvo's new 2.4-liter D5 diesel engine, which powers the recently launched S80 luxury sedan. Working with Volvo engineers, BorgWarner's award-winning R2S(R) turbo technology helped beat fuel economy targets while significantly improving driving dynamics. Volvo's new D5 diesel engine produces 205 horsepower with 420 Nm of torque but consumes only 6.2 liters/100 km of fuel (nearly 38 mpg), a significant improvement over the 185 horsepower, 400 Nm of torque and 7.1 liters/100 km of fuel consumption (33 mpg) delivered by previous D5 diesel engines.

(Photo: http://www.newscom.com/cgi-bin/prnh/20090317/DE84700 )

"BorgWarner's R2S(R) turbochargers continuously deliver high boost pressure over the entire engine speed range, ensuring optimum engine response at all times while reducing fuel consumption," said Roger Wood, President and General Manager, BorgWarner Turbo & Emissions Systems. "Drivers will enjoy the power and excitement of quick, smooth acceleration without turbo lag and the added pleasure of passing the fuel pump without refilling."

BorgWarner's R2S(R) regulated two-stage turbocharging system consists of two series-connected turbochargers: a smaller unit (referred to as the high-pressure turbocharger) and a larger unit (known as the low-pressure turbocharger). At low engine speeds, the smaller high-pressure turbocharger delivers spontaneous engine response without "turbo lag." The fast build-up of boost pressure improves pull-away torque and accelerating from a standing start. As a result, the S80 can accelerate from 0 to 62 mph (100km/h) in just 8 seconds, in spite of weighing nearly 1.7 tons. With increasing engine speed, the larger low-pressure turbocharger gradually takes over more of the work, providing more power when accelerating at higher speeds.

Compared with single-stage turbocharging, BorgWarner's R2S(R) turbocharging technology also introduces higher levels of exhaust gas recirculation (EGR) across a wider range, which not only delivers high performance and better fuel economy, but reduces emissions. While offering excellent dynamics, Volvo's D5 diesel engine emits only 164 g of CO2/km, complying with Euro 5 emission standards.

BorgWarner's patented R2S(R) technology has received multiple awards, including a 2008 Automotive News PACE Environmental Award.

BorgWarner Turbo & Emissions Systems is a leading global producer of turbochargers, exhaust gas recirculation valves 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 60 locations in 18 countries. Customers include VW/Audi, Ford, Toyota, Renault/Nissan, General Motors, Hyundai/Kia, Daimler, Chrysler, Fiat, BMW, Honda, John Deere, PSA, and MAN. The Internet address for BorgWarner is: http://www.borgwarner.com.

SOURCE BorgWarner Inc.

Source: PR Newswire

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