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R2S turbochargers, EGR Coolers reduce emissions for diesel vehicles: BorgWarner

ABR Staff Writer Published 09 December 2010

BorgWarner said its regulated two-stage (R2S) turbochargers and Hybrid Tube exhaust gas recirculation (EGR) coolers help reduce emissions and improve fuel economy for on-highway commercial diesel trucks and buses.

BorgWarner said the combination of technologies enables truck makers to meet 2010 EPA emissions regulations, which require an 83% reduction in nitrogen oxide (NOx) emissions.

BorgWarner EVP Roger Wood said the company's turbocharging and EGR technologies help these engines reduce NOx where it starts-in the combustion chamber-while improving performance and fuel economy.

"With the acquisition of ENSA, BorgWarner has added EGR coolers to our broad portfolio of technologies," Wood said.

"It is yet another tool BorgWarner engineers can use when working with our customers to develop optimized air management systems."

BorgWarner's patented R2S turbocharging technology employs two series-connected turbochargers to reach high pressure ratios with overall system efficiency and fast response to changing engine loads, such as accelerating or climbing steep grades.

BorgWarner's turbocharging technology also improves exhaust flow, resulting in improved fuel economy.

The Hybrid Tube EGR cooler provides heat rejection with less soot and hydrocarbon buildup, the company said.